diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/Demo2Application.java b/Code/Backend/demo2/src/main/java/com/example/demo/Demo2Application.java
new file mode 100644
index 0000000..13172bc
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/Demo2Application.java
@@ -0,0 +1,20 @@
+package com.example.demo;
+
+import cn.dev33.satoken.SaManager;
+import org.mybatis.spring.annotation.MapperScan;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.stereotype.Controller;
+
+@Controller
+@MapperScan("com.example.demo.mapper")
+@SpringBootApplication
+public class Demo2Application {
+
+    public static void main(String[] args) {
+        System.out.println("hello world");
+        System.out.println("启动成功：Sa-Token配置如下：" + SaManager.getConfig());
+        SpringApplication.run(Demo2Application.class, args);
+    }
+
+}
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/common/SaToken/SaTokenConfigure.java b/Code/Backend/demo2/src/main/java/com/example/demo/common/SaToken/SaTokenConfigure.java
new file mode 100644
index 0000000..2734595
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/common/SaToken/SaTokenConfigure.java
@@ -0,0 +1,20 @@
+package com.example.demo.common.SaToken;
+
+import cn.dev33.satoken.interceptor.SaAnnotationInterceptor;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+/**
+ * Sa-Token 配置类
+ */
+@Configuration
+public class SaTokenConfigure implements WebMvcConfigurer {
+//    @Override
+//    public void addInterceptors(InterceptorRegistry registry) {
+//        registry.addInterceptor(new SaAnnotationInterceptor())
+//                .addPathPatterns()
+//                .excludePathPatterns("/**");
+//    }
+}
+
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/common/SaToken/StpInterfaceImpl.java b/Code/Backend/demo2/src/main/java/com/example/demo/common/SaToken/StpInterfaceImpl.java
new file mode 100644
index 0000000..764dcd3
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/common/SaToken/StpInterfaceImpl.java
@@ -0,0 +1,25 @@
+package com.example.demo.common.SaToken;
+
+import cn.dev33.satoken.stp.StpInterface;
+import org.springframework.stereotype.Component;
+import java.util.Arrays;
+import java.util.List;
+/**
+ * 自定义权限验证接口扩展
+ */
+@Component
+public class StpInterfaceImpl implements StpInterface {
+
+    // 返回一个账号所拥有的权限码集合
+    @Override
+    public List<String> getPermissionList(Object loginId, String loginType) {
+        return Arrays.asList("101", "user-add", "user-delete", "user-update", "user-get", "article-get");
+    }
+
+    // 返回一个账号所拥有的角色标识集合
+    @Override
+    public List<String> getRoleList(Object loginId, String loginType) {
+        return Arrays.asList("admin", "super-admin");
+    }
+
+}
\ No newline at end of file
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/common/ServerConst.java b/Code/Backend/demo2/src/main/java/com/example/demo/common/ServerConst.java
new file mode 100644
index 0000000..660f96a
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/common/ServerConst.java
@@ -0,0 +1,18 @@
+package com.example.demo.common;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+
+@NoArgsConstructor
+@AllArgsConstructor
+@ToString
+@Data
+public class ServerConst {
+    private String address = "http://localhost:8081/";
+    public String getAddress()
+    {
+        return address;
+    }
+}
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/config/MailConfig.java b/Code/Backend/demo2/src/main/java/com/example/demo/config/MailConfig.java
new file mode 100644
index 0000000..de6b182
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/config/MailConfig.java
@@ -0,0 +1,4 @@
+package com.example.demo.config;
+
+public class MailConfig {
+}
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/config/WebConfig.java b/Code/Backend/demo2/src/main/java/com/example/demo/config/WebConfig.java
new file mode 100644
index 0000000..77e6f6c
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/config/WebConfig.java
@@ -0,0 +1,34 @@
+package com.example.demo.config;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
+@Configuration
+public class WebConfig extends WebMvcConfigurationSupport {
+
+
+    @Override
+    public void addResourceHandlers(ResourceHandlerRegistry registry) {
+        registry.addResourceHandler("/**").addResourceLocations("file:/home/jjw/Desktop/server/");
+//        registry.addResourceHandler("/**").addResourceLocations("file:F:\\ALL\\demo2\\src\\main\\resources\\static\\");
+//        registry.addResourceHandler("/images/**").addResourceLocations("file:F:\\ALL\\demo2\\src\\main\\resources\\static\\images\\allgoods\\");
+    }
+
+//    @Override
+    /**
+     * 争对跨域问题：
+     * 1. 跨域路径
+     * 2. 请求来源
+     * 3. 跨域方法
+     * 4. 最大响应时间
+     * 5. 允许携带数据
+     */
+
+//    public void addCorsMappings(CorsRegistry registry) {
+//        registry.addMapping("/**")
+//                .allowedOrigins("http://localhost:8081", "null")
+//                .allowedMethods("POST", "GET", "PUT", "OPTIONS", "DELETE")
+//                .maxAge(3600)
+//                .allowCredentials(true);
+//    }
+}
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/controller/GoodController.java b/Code/Backend/demo2/src/main/java/com/example/demo/controller/GoodController.java
new file mode 100644
index 0000000..2f1ff10
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/controller/GoodController.java
@@ -0,0 +1,553 @@
+package com.example.demo.controller;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.example.demo.common.ServerConst;
+import com.example.demo.entity.Good;
+import com.example.demo.entity.User;
+import com.example.demo.mapper.GoodMapper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import javax.servlet.http.HttpServletRequest;
+import java.lang.reflect.Method;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.*;
+
+@RestController
+@RequestMapping("/Good")
+public class GoodController {
+    @Value("${prop.backendIp}")
+    private String backendIp;
+//    private int step = 100;
+    @Autowired
+    private GoodMapper goodMapper;
+    //------------------轮播图--------------------- OK
+    @GetMapping("Banner")
+    public List<HashMap> getBanner()
+    {
+        System.out.println("HERE IS BANNER");
+        int num = 4;
+        List<HashMap> list =new ArrayList<>();
+        for (int i = 1; i <= num; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/banner/";
+            String pic_name =  serverconst + Integer.toString(i)+".png";
+            dict.put("img",pic_name);
+//            System.out.println(pic_name);
+            list.add(dict);
+        }
+        return list;
+    }
+    //------------------轮播图---------------------
+
+    @RequestMapping("updateGoodStatus")
+    public String updateGoodStatus(@RequestParam Map<String, String> params) {
+        System.out.println("updateGoodStatus");
+        int id = Integer.parseInt(params.get("id"));
+        int uid = Integer.parseInt(params.get("uid"));
+        int status = Integer.parseInt(params.get("status"));
+        Good good = new Good();
+        good.setId(id);
+        good.setUid(uid);
+        good.setStatus(status);
+        goodMapper.updateById(good);
+        return "OK";
+    }
+
+
+    @RequestMapping("insert")
+    public String insert(@RequestParam Map<String, String> params){
+        System.out.println("--------insert-------");
+        Good good = new Good();
+        int uid = Integer.parseInt(params.get("uid"));
+        String goodname=params.get("name");
+        int category= Integer.parseInt(params.get("category"));
+        String comment=params.get("comment");
+        String email=params.get("email");
+        String price=params.get("price");
+        String picurl1=params.get("picurl1");
+        String picurl2=params.get("picurl2");
+        String picurl3=params.get("picurl3");
+        String time = params.get("time");
+        good.setName(goodname);
+        good.setEmail(email);
+        good.setUid(uid);
+        good.setTime(time);
+        good.setComment(comment);
+        good.setPrice(price);
+        good.setCategory(Integer.valueOf(category));
+        good.setPicurl1(picurl1);
+        good.setPicurl2(picurl2);
+        good.setPicurl3(picurl3);
+        System.out.println(good);
+        goodMapper.insert(good);
+        return "OK";
+    }
+
+    @RequestMapping("getAllItem")
+    public List<Good> getAllItem(){
+        List<Good> goods = goodMapper.selectList(null);
+        System.out.println(goods);
+        return goods;
+
+    }
+    //根据分类查找商品category
+    @RequestMapping("getByCategory")
+    public List<Good> getByCategory(@RequestParam("category") int cate){
+        System.out.println(cate);
+        QueryWrapper<Good> goodQueryWrapper = new QueryWrapper<>();
+        goodQueryWrapper.eq("category",cate);
+        List<Good> goodList = goodMapper.selectList(goodQueryWrapper);
+        System.out.println(goodList);
+        return goodList;
+    }
+    @RequestMapping("getByName")
+    public List<Good> getByName(@RequestParam("productname") String name){
+        System.out.println(name);
+        QueryWrapper<Good> goodQueryWrapper = new QueryWrapper<>();
+        goodQueryWrapper.eq("name",name);
+        List<Good> goodList = goodMapper.selectList(goodQueryWrapper);
+        System.out.println(goodList);
+        return goodList;
+    }
+    //根据用户id查找商品用户发布的商品
+    @RequestMapping("getByUid")
+    public List<Good> getByUid(@RequestParam Map<String, String> params) throws ParseException {
+        int uid = Integer.parseInt(params.get("id"));
+        System.out.println(uid);
+        QueryWrapper<Good> goodQueryWrapper = new QueryWrapper<>();
+        goodQueryWrapper.eq("uid",uid);
+        List<Good> goodList = goodMapper.selectList(goodQueryWrapper);
+        System.out.println(goodList);
+        return goodList;
+    }
+
+
+
+
+//    @RequestMapping("detailslist")
+////    @RequestParam(name = "productId", required = false)
+//    public List<Good> getDetailslist(@RequestParam(name = "productId", required = false)String category) {
+//        System.out.println(category);
+//        System.out.println("detailslist");
+//        QueryWrapper<Good> goodQueryWrapper = new QueryWrapper<>();
+//        goodQueryWrapper.eq("category", category);
+//        List<Good> goodList = goodMapper.selectList(goodQueryWrapper);
+//        System.out.println(goodList);
+//        return goodList;
+//    }
+    @RequestMapping("detailslist")
+//    @RequestParam(name = "productId", required = false)
+    public List<Good> getDetailslist(@RequestParam(name = "productname", required = false)String name) {
+        System.out.println(name);
+        System.out.println("detailslist");
+        QueryWrapper<Good> goodQueryWrapper = new QueryWrapper<>();
+        goodQueryWrapper.eq("name", name);
+        List<Good> goodList = goodMapper.selectList(goodQueryWrapper);
+        System.out.println(goodList);
+        return goodList;
+    }
+
+
+    @RequestMapping("GoodsItem")
+    public List<HashMap> getGoodsItem(@RequestParam Map<String, String> params)
+    {
+        System.out.println("---GoodsItem------");
+        System.out.println("-------");
+        String subject = params.get("interest");
+        System.out.println("-------");
+        System.out.println(subject);
+        int num = 8;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        if(Objects.equals(subject, "数学")){
+        System.out.println("---GoodsItem---Math----");
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("微积分","军事教程","弹性力学","概率论与数理统计","高等代数","高级英语口语辩论基础与实训","工程地质学","计算机操作系统"));
+        for (int i = 1; i <= num; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/goodsitem/math/";
+            String pic_name =  serverconst + Integer.toString(i)+".jpg";
+            dict.put("images",pic_name);
+            dict.put("name",firstNameList.get(j));
+            dict.put("price","100");
+            list.add(dict);
+            j++;
+        }
+        return list;
+        }
+        else if(Objects.equals(subject, "计算机")){
+            System.out.println("---GoodsItem----computer--");
+            List<String> firstNameList =new ArrayList<String>(Arrays.asList("微积分","军事教程","弹性力学","概率论与数理统计","高等代数","高级英语口语辩论基础与实训","工程地质学","计算机操作系统"));
+            for (int i = 1; i <= num; i++) {
+                HashMap<String, String> dict = new HashMap<>();
+                String serverconst = backendIp+"/images/goodsitem/computer/";
+                String pic_name =  serverconst + Integer.toString(i)+".jpg";
+                dict.put("images",pic_name);
+                dict.put("name",firstNameList.get(j));
+                dict.put("price","100");
+                list.add(dict);
+                j++;
+            }
+            return list;
+        }
+        else {
+            System.out.println("---GoodsItem---NO---");
+            List<String> firstNameList =new ArrayList<String>(Arrays.asList("微积分","军事教程","弹性力学","概率论与数理统计","高等代数","高级英语口语辩论基础与实训","工程地质学","计算机操作系统"));
+            for (int i = 1; i <= num; i++) {
+                HashMap<String, String> dict = new HashMap<>();
+                String serverconst = backendIp+"/images/goodsitem/";
+                String pic_name =  serverconst + Integer.toString(i)+".jpg";
+                dict.put("images",pic_name);
+                dict.put("name",firstNameList.get(j));
+                dict.put("price","100");
+                list.add(dict);
+                j++;
+            }
+            return list;
+
+        }
+    }
+
+
+    @GetMapping("GoodsItemLeft")
+    public List<HashMap> getGoodsItemLeft()
+    {
+        System.out.println("GoodsItemLeft");
+        int num = 1;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        for (int i = 1; i <= num; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/goodsitemleft/";
+            String pic_name =  serverconst + Integer.toString(1)+".jpg";
+            dict.put("images",pic_name);
+            list.add(dict);
+            j++;
+        }
+        return list;
+    }
+
+
+
+    @GetMapping("TongXiuList_shuxue")
+    public List<HashMap> getTongXiu()
+    {
+        int goodsurl = 100;
+        System.out.println("TongXiuList_shuxue");
+        int num = 4;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("微积分","大学数学","高等代数","概率论与数理统计"));
+        for (int i = 1; i <= num; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/TongXiu/";
+            String picUrl =  serverconst + Integer.toString(i)+".jpg";
+            dict.put("picUrl",picUrl);
+            dict.put("name",firstNameList.get(j));
+            dict.put("goodsUrl", String.valueOf(goodsurl));
+            list.add(dict);
+            j++;
+            goodsurl++;
+        }
+        return list;
+    }
+    @GetMapping("TongXiuList_yingyu")
+    public List<HashMap> getyingyu()
+    {
+        int goodsurl = 100;
+        System.out.println("TongXiuList_yingyu");
+        int num = 4;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("高级英语口语辩论基础与实训","大学英语","英语学术论文阅读与写作","汉英翻译学基础理论与实践"));
+        for (int i = num+1; i <= num*2; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/TongXiu/";
+            String picUrl =  serverconst + Integer.toString(i)+".jpg";
+            dict.put("picUrl",picUrl);
+            dict.put("name",firstNameList.get(j));
+            dict.put("goodsUrl","100");
+            list.add(dict);
+            j++;
+        }
+        return list;
+    }
+    @GetMapping("TongXiuList_zhengzhi")
+    public List<HashMap> getzhengzhi()
+    {
+        System.out.println("TongXiuList_zhengzhi");
+        int num = 4;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("大学军事理论教程","近代史","毛泽东思想和中国特色社会主义理论体系概论","思想道德与法治"));
+        for (int i = 2*num+1; i <= num*3; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/TongXiu/";
+            String picUrl =  serverconst + Integer.toString(i)+".jpg";
+            dict.put("picUrl",picUrl);
+            dict.put("name",firstNameList.get(j));
+            dict.put("goodsUrl","100");
+            list.add(dict);
+            j++;
+        }
+        return list;
+    }
+    @GetMapping("KeWaiList_xiaoshuo")
+    public List<HashMap> getKeWaiList_xiaoshuo()
+    {
+        int num = 4;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("边城","变形记","宠物猫的反击战","三体"));
+        for (int i = 1; i <= num; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/kewai/";
+            System.out.println(serverconst);
+            String picUrl =  serverconst + Integer.toString(i)+".jpg";
+            dict.put("picUrl",picUrl);
+            dict.put("name",firstNameList.get(j));
+            dict.put("goodsUrl","100");
+            list.add(dict);
+            j++;
+        }
+        return list;
+    }
+    @GetMapping("KeWaiList_manhua")
+    public List<HashMap> getKeWaiList_manhua()
+    {
+        System.out.println("KeWaiList_manhua");
+        int num = 4;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("巴黎城记","漫画龙纹身的女孩","漫画名侦探柯南漆黑的追踪者","漫画千与千寻"));
+        for (int i = num+1; i <= num*2; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/kewai/";
+            String picUrl =  serverconst + Integer.toString(i)+".jpg";
+            dict.put("picUrl",picUrl);
+            dict.put("name",firstNameList.get(j));
+            dict.put("goodsUrl","100");
+            list.add(dict);
+            j++;
+        }
+        return list;
+    }
+
+
+
+    @GetMapping("ZhuanYeList_dike")
+    public List<HashMap> getdike()
+    {
+        System.out.println("ZhuanYeList_dike");
+        int num = 4;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("工程地质学","普通地质学","岩石力学","弹性力学"));
+        for (int i = 1; i <= num; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/ZhuanYe/";
+            String picUrl =  serverconst + Integer.toString(i)+".jpg";
+            dict.put("picUrl",picUrl);
+            dict.put("name",firstNameList.get(j));
+            dict.put("goodsUrl","100");
+            list.add(dict);
+            j++;
+        }
+        return list;
+    }
+
+
+    @GetMapping("ZhuanYeList_jike")
+    public List<HashMap> getjike()
+    {
+        System.out.println("ZhuanYeList_jike");
+        int num = 4;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("入门到精通","程序设计基础","操作系统","计算机基础"));
+        for (int i = num+1; i <= num*2; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/ZhuanYe/";
+            String picUrl =  serverconst + Integer.toString(i)+".jpg";
+            dict.put("picUrl",picUrl);
+            dict.put("name",firstNameList.get(j));
+            dict.put("goodsUrl","100");
+            list.add(dict);
+            j++;
+        }
+        return list;
+    }
+
+
+    @GetMapping("MianFeiList_kewai")
+    public List<HashMap> getMianFeiList_kewai()
+    {
+        System.out.println("MianFeiList_kewai");
+        int num = 4;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("漫画千与千寻","十角馆事件","异世界舅舅","蜘蛛侠漫画史"));
+        for (int i = num+1; i <= num*2; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/mianfei/";
+            String picUrl =  serverconst + Integer.toString(i)+".jpg";
+            dict.put("picUrl",picUrl);
+            dict.put("name",firstNameList.get(j));
+            dict.put("goodsUrl","100");
+            list.add(dict);
+            j++;
+        }
+        return list;
+    }
+
+    @GetMapping("MianFeiList_jiaoke")
+    public List<HashMap> getMianFeiList_jiaoke()
+    {
+        System.out.println("MianFeiList_jiaoke");
+        int num = 4;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("量子力学","普通生物学","普通物理学","有机固体物理"));
+        for (int i = 1; i <= num; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/mianfei/";
+            String picUrl =  serverconst + Integer.toString(i)+".jpg";
+            dict.put("picUrl",picUrl);
+            dict.put("name",firstNameList.get(j));
+            dict.put("goodsUrl","100");
+            list.add(dict);
+            j++;
+        }
+        return list;
+    }
+    @GetMapping("KaoYanList_shuxue")
+    public List<HashMap> getKaoYanList_shuxue()
+    {
+        System.out.println("KaoYanList_shuxue");
+        int num = 4;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("考研数学二十讲","考研数学辅导","考研数学复习指南","考研数学题典"));
+        for (int i = 1; i <= num; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/kaoyan/";
+            String picUrl =  serverconst + Integer.toString(i)+".jpg";
+
+            dict.put("picUrl",picUrl);
+            dict.put("name",firstNameList.get(j));
+            dict.put("goodsUrl","100");
+
+            list.add(dict);
+            j++;
+        }
+        return list;
+    }
+    @GetMapping("KaoYanList_zhengzhi")
+    public List<HashMap> getKaoYanList_zhengzhi()
+    {
+        System.out.println("KaoYanList_zhengzhi");
+        int num = 4;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("考研政治核心考点","考研政治狂背清单","考研政治力解考点","考研政治强化冲刺800题"));
+        for (int i = 1+num; i <= num*2; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/kaoyan/";
+            String picUrl =  serverconst + Integer.toString(i)+".jpg";
+            System.out.println(picUrl);
+
+            dict.put("picUrl",picUrl);
+            dict.put("name",firstNameList.get(j));
+            dict.put("goodsUrl","100");
+
+            list.add(dict);
+            j++;
+        }
+        return list;
+    }
+
+
+    @GetMapping("hotlist1")
+    public List<HashMap> gethotlist1()
+    {
+        System.out.println("hotlist1");
+        int num = 4;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList = new ArrayList<>(Arrays.asList("微积分", "毛概", "大学英语", "近代史"));
+        for (int i = 1; i <= num; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/hotlist1/";
+            String picUrl =  serverconst + Integer.toString(i)+".jpg";
+            //----------------------
+            dict.put("listPicUrl",picUrl);
+            dict.put("name",firstNameList.get(j));
+            dict.put("retailPrice","100");
+            dict.put("goodsUrl","100");
+            //----------------------
+            list.add(dict);
+//            System.out.println(picUrl);
+            j++;
+        }
+
+        return list;
+    }
+
+    @GetMapping("hotlist2")
+    public List<HashMap> gethotlist2()
+    {
+        System.out.println("hotlist2");
+        int num = 4;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("入门到精通","操作系统","计算机基础","普通地质学"));
+        for (int i = 1; i <= num; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/hotlist2/";
+            String picUrl =  serverconst + Integer.toString(i)+".jpg";
+//            System.out.println(picUrl);
+
+            dict.put("listPicUrl",picUrl);
+            dict.put("name",firstNameList.get(j));
+            dict.put("retailPrice","100");
+            dict.put("goodsUrl","100");
+
+            list.add(dict);
+            j++;
+        }
+
+        return list;
+    }
+    @GetMapping("hotlist3")
+    public List<HashMap> gethotlist3()
+    {
+        System.out.println("hotlist3");
+        int num = 4;
+        int j = 0;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("千与千寻","边城","变形记","三体"));
+        for (int i = 1; i <= num; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = backendIp+"/images/hotlist3/";
+            String picUrl =  serverconst + Integer.toString(i)+".jpg";
+//            System.out.println(picUrl);
+
+            dict.put("listPicUrl",picUrl);
+            dict.put("name",firstNameList.get(j));
+            dict.put("retailPrice","100");
+            dict.put("goodsUrl","100");
+
+            list.add(dict);
+            j++;
+        }
+
+        return list;
+    }
+
+
+}
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/controller/LoginController.java b/Code/Backend/demo2/src/main/java/com/example/demo/controller/LoginController.java
new file mode 100644
index 0000000..3339a95
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/controller/LoginController.java
@@ -0,0 +1,107 @@
+package com.example.demo.controller;
+import cn.dev33.satoken.annotation.SaCheckBasic;
+import cn.dev33.satoken.annotation.SaCheckLogin;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.*;
+import java.util.List;
+import cn.dev33.satoken.stp.StpUtil;
+import cn.dev33.satoken.util.SaResult;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.example.demo.entity.User;
+import com.example.demo.mapper.UserMapper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.servlet.http.HttpServletRequest;
+import java.util.HashMap;
+import java.util.Map;
+@RestController
+@RequestMapping("/auth")
+public class LoginController {
+    @Autowired
+    private UserMapper userMapper;
+    @SaCheckLogin
+    @RequestMapping("checkLogin")
+    public SaResult checkLogin() {
+        return SaResult.ok();
+    }
+
+
+    //----------------------------------------------------------------------
+    // 用户登入，输入用户名密码，返回用户个人信息字典 OK
+//    @RequestMapping  ("login")@RequestParam(name="username",required = false)
+//    @RequestParam(name="password",required = false)
+    @RequestMapping("login")
+    public Map<String, Object> doLogin(  String username,  String password){
+        System.out.println(username);
+        System.out.println(password);
+        Map<String, Object> res = new HashMap<>();
+        Map<String, Object> map = new HashMap<>();
+        map.put("name",username);
+        map.put("password",password);
+        QueryWrapper<User> wrapper = new QueryWrapper<>();
+        wrapper.allEq(map);
+        User user = userMapper.selectOne(wrapper);
+        System.out.println("用户尝试登入");
+        if(user == null){
+            res.put("state","failure");
+            res.put("result",null);
+            System.out.println("用户登入失败，暂未注册");
+            return res;
+//            System.out.println("in");
+//            StpUtil.login(100);
+//            str = "---------ok----------";
+//            System.out.println(str);
+//            System.out.println("用户登入成功");
+//            return StpUtil.getTokenValue();
+        }
+        System.out.println("用户登入成功");
+        res.put("state","success");
+        res.put("result",user);
+        return res;
+    }
+//----------------------------------------------------------------------
+
+    @PostMapping ("test")
+    public String test() {
+        return "123";
+
+    }
+
+    @PostMapping ("isLogin")
+    public String isLogin(){
+        System.out.println("here--------");
+        return "当前会话是否登录："+StpUtil.isLogin();
+    }
+
+    @RequestMapping("getLoginId")
+    public String getLoginId(){
+        System.out.println("--------here--------");
+        return "当前会话账号ID："+StpUtil.getLoginIdDefaultNull();
+    }
+
+
+    //token 的信息
+    @RequestMapping("tokenInfo")
+    public SaResult tokenInfo() {
+        System.out.println("here--------");
+        return SaResult.data("当前token信息："+StpUtil.getTokenInfo());
+
+    }
+
+    // 测试注销  ---- http://localhost:8081/user/logout
+    @RequestMapping("logout")
+    public SaResult logout() {
+        StpUtil.logout();
+        return SaResult.ok("注销成功");
+    }
+
+    @RequestMapping("disable")
+    public String disable(){
+        StpUtil.disable(10001, 30);
+        return "已被封禁30S";
+    }
+}
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/controller/MailController.java b/Code/Backend/demo2/src/main/java/com/example/demo/controller/MailController.java
new file mode 100644
index 0000000..84348ba
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/controller/MailController.java
@@ -0,0 +1,77 @@
+package com.example.demo.controller;
+
+import com.example.demo.mapper.GoodMapper;
+import com.example.demo.service.MailService;
+//import com.example.demo.service.MimeMailService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.servlet.http.HttpServletRequest;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+
+@RestController
+@RequestMapping("/Mail")
+public class MailController {
+
+    @Autowired
+    private MailService mailService;
+    @RequestMapping("/Send")
+    public String Send(HttpServletRequest request)
+    {
+        String price=request.getParameter("price");
+        String name=request.getParameter("name");
+        String to=request.getParameter("sell_email");
+        String from=request.getParameter("buy_email");
+        String statement=request.getParameter("statement");
+        String time = request.getParameter("time");
+        String subject = "N-Market 预约通知";
+        String sell_content = "尊敬的客户您好:\n\t您的商品" + name + "已被预约，买家承诺购买，预约时间段为"+time+"\n\t买家联系方式为"+from + "，请双方在预约时间前尽快联系，以免影响双方信用。" ;
+        String buy_content = "尊敬的客户您好，，您选择的商品" + name + "成功预约，您承诺在原则上购买此商品，预约时间段为"+time+"卖家联系方式为"+to + "，请双方在预约时间前尽快联系，以免影响双方信用。";
+        try{
+            mailService.sendSimpleMail(to,subject,sell_content);
+            mailService.sendSimpleMail(from,subject,buy_content);
+            return "YES";
+        }catch (Exception e){
+            return "NO";
+        }
+    }
+    @RequestMapping("/SendHtml")
+    public String SendHtml(HttpServletRequest request)
+    {
+        System.out.println("-------EMAIL--------");
+        String buy=request.getParameter("buyemail");
+        String sell=request.getParameter("sellemail");
+        String name=request.getParameter("name");
+        String time=request.getParameter("time");
+        String price=request.getParameter("price");
+        System.out.println("here");
+        try{
+            mailService.sendMimeMail(name,time,buy,sell,price,true);
+            mailService.sendMimeMail(name,time,buy,sell,price,false);
+            return "YES";
+        }catch (Exception e){
+            return "NO";
+        }
+    }
+    @RequestMapping("/Test")
+    public String Test(@RequestParam("to") String to,@RequestParam("subject") String subject,@RequestParam("content") String content)
+    {
+        try{
+            mailService.sendSimpleMail(to,subject,content);
+            return "YES";
+        }catch (Exception e){
+            return "NO";
+        }
+    }
+
+
+
+}
+
+
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/controller/MemberController.java b/Code/Backend/demo2/src/main/java/com/example/demo/controller/MemberController.java
new file mode 100644
index 0000000..8035eb6
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/controller/MemberController.java
@@ -0,0 +1,41 @@
+package com.example.demo.controller;
+
+import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
+import com.example.demo.entity.User;
+import com.example.demo.mapper.UserMapper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+
+@RestController
+@RequestMapping("/member")
+public class MemberController {
+    @Autowired
+    private UserMapper userMapper;
+
+    @RequestMapping("/info")
+    public List<HashMap> getinfo(){
+        int num = 8;
+        List<HashMap> list =new ArrayList<>();
+        List<String> firstNameList =new ArrayList<String>(Arrays.asList("大学化学","大学化学","大学化学","大学化学","大学化学","大学化学","大学化学"));
+        for (int i = 1; i <= num; i++) {
+            HashMap<String, String> dict = new HashMap<>();
+            String serverconst = "http://172.28.187.198:8081/goodsitem";
+            System.out.println(serverconst);
+            String pic_name =  serverconst + firstNameList.get(i) + Integer.toString(i)+".png";
+            dict.put("images",pic_name);
+            dict.put("name",firstNameList.get(i));
+            dict.put("price","100");
+            list.add(dict);
+        }
+        return list;
+
+    }
+
+}
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/controller/OrderController.java b/Code/Backend/demo2/src/main/java/com/example/demo/controller/OrderController.java
new file mode 100644
index 0000000..0d62fdf
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/controller/OrderController.java
@@ -0,0 +1,70 @@
+package com.example.demo.controller;
+
+
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.example.demo.entity.Good;
+import com.example.demo.entity.OrderList;
+import com.example.demo.mapper.OrderMapper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.*;
+
+@RestController
+@RequestMapping("/Order")
+public class OrderController {
+    @Autowired
+    private OrderMapper orderMapper;
+
+    @RequestMapping("/del")
+    public void getOrderList(@RequestParam Map<String, String> params) {
+        System.out.println("------del------");
+        System.out.println(params.get("oid"));
+        int uid = Integer.parseInt(params.get("oid"));
+        orderMapper.deleteById(uid);
+    }
+    @RequestMapping("/getAll")
+    public List<OrderList> get() {
+        List<OrderList> orders = orderMapper.selectList(null);
+        System.out.println(orders);
+        return orders;
+    }
+
+    @RequestMapping("/getByuid")
+    public List<OrderList> getByuid(@RequestParam Map<String, String> params){
+        System.out.println("----getAll-----");
+        int uid = Integer.parseInt(params.get("uid"));
+        System.out.println(uid);
+        QueryWrapper<OrderList> orderQueryWrapper = new QueryWrapper<>();
+        orderQueryWrapper.eq("uid",uid);
+        List<OrderList> orderList = orderMapper.selectList(orderQueryWrapper);
+        System.out.println(orderList);
+        return orderList;
+    }
+
+    @RequestMapping("/insert")
+    public OrderList insert(@RequestParam Map<String, String> params) {
+        System.out.println("------INSERT------");
+        OrderList order = new OrderList();
+        System.out.println(params);
+
+        int uid = Integer.parseInt(params.get("uid"));
+        int gid = Integer.parseInt(params.get("gid"));
+        int status = Integer.parseInt(params.get("status"));
+        String goodname=params.get("name");
+        String price=params.get("price");
+        String time = params.get("time");
+        System.out.println(uid);
+
+        order.setName(goodname);
+        order.setUid(uid);
+        order.setTime(time);
+        order.setPrice(price);
+        order.setGid(gid);
+        order.setStatus(status);
+
+        System.out.println(order);
+        orderMapper.insert(order);
+        return order;
+    }
+}
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/controller/UploadController.java b/Code/Backend/demo2/src/main/java/com/example/demo/controller/UploadController.java
new file mode 100644
index 0000000..2f3591c
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/controller/UploadController.java
@@ -0,0 +1,76 @@
+package com.example.demo.controller;
+
+import com.example.demo.entity.Good;
+import com.example.demo.entity.User;
+import com.example.demo.mapper.GoodMapper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import javax.servlet.http.HttpServletRequest;
+import java.io.File;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.UUID;
+
+@RestController
+@RequestMapping("/Upload")
+public class UploadController {
+
+
+    @Value("${prop.upload-folder}")
+    private String UPLOAD_FOLDER;
+    @Value("${prop.backend}")
+    private String backend;
+    @Autowired
+    private GoodMapper goodMapper;
+
+    @RequestMapping("")
+    public HashMap<String,Object> upload(@RequestParam(name = "file", required = false) MultipartFile[] files, @RequestParam(name = "user_id", required = false) String id,
+                         @RequestParam(name = "name", required = false) String name, HttpServletRequest request) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
+        System.out.println("----------------上传照片----------------");
+        System.out.println("IN FUNC" + id + name);
+        HashMap<String,Object> map = new HashMap<String,Object>();
+        List<String> list = new ArrayList<>();
+        if (files == null || files.length == 0) {
+            System.out.println(files.length);
+            System.out.println("----No Files----");
+            map.put("status","failure");
+            return map;
+        }
+        else {
+            System.out.println("Files: " + files.length);
+            File savePathFile = new File(UPLOAD_FOLDER);
+            if (!savePathFile.exists()) {
+                savePathFile.mkdir();
+            }
+            int i = 0;
+            Long time = System.currentTimeMillis();
+            for(MultipartFile file:files)
+            {
+                String suffix = "jpg";
+                String filename = id + "_" + name + "_" + String.valueOf(i) + "_"+ String.valueOf(time) + "." + suffix;
+                try {
+                        file.transferTo(new File(UPLOAD_FOLDER + filename));
+                        System.out.println(UPLOAD_FOLDER + filename);
+                        System.out.println("success");
+                }catch (Exception e) {
+                    System.out.println("--上传失败--");
+                    map.put("status","failure");
+                    return map;
+                }
+                i++;
+                list.add(backend + filename);
+            }
+            map.put("status","success");
+            map.put("data",list);
+            return map;
+        }
+    }
+}
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/controller/UserController.java b/Code/Backend/demo2/src/main/java/com/example/demo/controller/UserController.java
new file mode 100644
index 0000000..3d819cb
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/controller/UserController.java
@@ -0,0 +1,126 @@
+package com.example.demo.controller;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
+import com.example.demo.entity.Good;
+import com.example.demo.entity.User;
+import com.example.demo.mapper.GoodMapper;
+import com.example.demo.mapper.UserMapper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+
+@RestController
+@RequestMapping("/user")
+public class UserController {
+    @Autowired
+    private UserMapper userMapper;
+    @Autowired
+    private GoodMapper goodMapper;
+    @RequestMapping("getUserById")
+    public User getUserById(@RequestParam Map<String, String> map){
+        System.out.println("----getUserById-----");
+        System.out.println(map.get("id"));
+        int id = Integer.parseInt(map.get("id"));
+        return userMapper.selectById(id);
+    }
+
+    @RequestMapping("/insert")
+    public String insert(@RequestParam("username") String name,@RequestParam("password") String passwd) {
+        User user = new User();
+        user.setName(name);
+        user.setPassword(passwd);
+        userMapper.insert(user);
+        System.out.println(user);
+        return "OK";
+    }
+    @RequestMapping("/updatepasswd")
+    public String updatepasswd(@RequestParam("username") String name,@RequestParam("password") String passwd) {
+        UpdateWrapper<User> updateWrapper = new UpdateWrapper<>();
+        updateWrapper.eq("name",name).set("password", passwd);
+        userMapper.update(null, updateWrapper);
+        return "OK";
+    }
+    @RequestMapping("/updatemail")
+    public String updatemail(@RequestParam("username") String name,@RequestParam("mail") String mail) {
+        UpdateWrapper<User> updateWrapper = new UpdateWrapper<>();
+        updateWrapper.eq("name",name).set("email", mail);
+        userMapper.update(null, updateWrapper);
+        return "OK";
+    }
+
+
+    @RequestMapping("/delete")
+    public Integer delete(@RequestParam("username") String name,@RequestParam("password") String passwd) {
+        HashMap<String,Object> map = new HashMap<>();
+        map.put("name",name);
+        map.put("password",passwd);
+        return userMapper.deleteByMap(map);
+    }
+    @RequestMapping("/findall")
+    public List<User> findall(){
+        List<User> users = userMapper.selectList(null);
+        System.out.println(users);
+        return users;
+    }
+
+    @RequestMapping("/select")
+    public void selectById(){
+        User user = userMapper.selectById(7);
+        System.out.println(user);
+
+    }
+
+
+    @RequestMapping("/getOrderList")
+    public List<Good> getOrderList (@RequestParam("uid") int uid)
+    {
+        System.out.println(uid);
+        QueryWrapper<Good> goodQueryWrapper = new QueryWrapper<>();
+        goodQueryWrapper.eq("uid",uid);
+        List<Good> goodList = goodMapper.selectList(goodQueryWrapper);
+        System.out.println(goodList);
+        return goodList;
+
+    };
+
+    @RequestMapping("/insertOrder")
+    public void insertOrder(@RequestBody Good order)
+    {
+        Good tmp = order;
+        goodMapper.insert(tmp);
+        System.out.println(tmp);
+        System.out.println(order);
+    };
+    @RequestMapping("/infoUpdate")
+    public String infoUpdate(@RequestParam Map<String, String> params)
+    {
+        System.out.println("----infoUpdate----");
+        try{
+            User user = new User();
+            user.setId(Integer.parseInt(params.get("id")));
+            user.setName(params.get("name"));
+            user.setPassword(params.get("password"));
+            user.setAge(Integer.valueOf(params.get("age")));
+            user.setEmail(params.get("email"));
+            user.setGender(params.get("gender"));
+            user.setPersonal(params.get("personal"));
+            user.setPhone(params.get("phone"));
+            user.setSchool(params.get("school"));
+            userMapper.updateById(user);
+            return "success";
+        }
+        catch (Exception e)
+        {
+            return "failure";
+        }
+    };
+
+
+}
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/entity/Good.java b/Code/Backend/demo2/src/main/java/com/example/demo/entity/Good.java
new file mode 100644
index 0000000..8bed4bf
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/entity/Good.java
@@ -0,0 +1,36 @@
+package com.example.demo.entity;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+
+import java.time.LocalDateTime;
+@NoArgsConstructor
+@AllArgsConstructor
+@ToString
+@Data
+@TableName("good")
+public class Good {
+    @TableId(type = IdType.AUTO)
+    private int id;
+    private int uid;
+    private int status;
+    private String name;
+//    private String picurl;
+    private String picurl1;
+    private String picurl2;
+    private String picurl3;
+    private String comment;
+    private String price;
+    private String time;
+    private String email;
+//    private String price;
+
+    private int category;
+
+
+}
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/entity/Mail.java b/Code/Backend/demo2/src/main/java/com/example/demo/entity/Mail.java
new file mode 100644
index 0000000..25cde86
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/entity/Mail.java
@@ -0,0 +1,29 @@
+package com.example.demo.entity;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.util.Date;
+
+@NoArgsConstructor
+@AllArgsConstructor
+@ToString
+@Data
+public class Mail {
+    private String id;
+    private String from;
+    private String to;
+    private String subject;
+    private String text;
+    private Date sentDate;
+    private String cc;
+    private String bcc;
+    private String status;
+    private String error;
+    @JsonIgnore
+    private MultipartFile[] multipartFiles;
+}
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/entity/OrderList.java b/Code/Backend/demo2/src/main/java/com/example/demo/entity/OrderList.java
new file mode 100644
index 0000000..b77c411
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/entity/OrderList.java
@@ -0,0 +1,31 @@
+package com.example.demo.entity;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+
+@NoArgsConstructor
+@AllArgsConstructor
+@ToString
+@Data
+@TableName("orderlist")
+public class OrderList {
+    @TableId(type = IdType.AUTO)
+    private int oid;
+    private int status;
+    private String name;
+
+    private String price;
+    private String time;
+
+
+    private int uid;
+
+    private int gid;
+
+
+}
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/entity/User.java b/Code/Backend/demo2/src/main/java/com/example/demo/entity/User.java
new file mode 100644
index 0000000..6ea6cbb
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/entity/User.java
@@ -0,0 +1,29 @@
+package com.example.demo.entity;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+
+
+@NoArgsConstructor
+@AllArgsConstructor
+@ToString
+@Data
+@TableName("user")
+public class User {
+    @TableId(type = IdType.AUTO)
+    private int id;
+    private String email;
+    private Integer age;
+    private String name;
+    private String school;
+    private String gender;
+    private String personal;
+    private String phone;
+    private String password;
+
+}
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/mapper/GoodMapper.java b/Code/Backend/demo2/src/main/java/com/example/demo/mapper/GoodMapper.java
new file mode 100644
index 0000000..fdd6308
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/mapper/GoodMapper.java
@@ -0,0 +1,9 @@
+package com.example.demo.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.example.demo.entity.Good;
+import org.springframework.stereotype.Repository;
+@Repository
+public interface GoodMapper extends BaseMapper<Good>{
+
+}
\ No newline at end of file
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/mapper/OrderMapper.java b/Code/Backend/demo2/src/main/java/com/example/demo/mapper/OrderMapper.java
new file mode 100644
index 0000000..50b00fc
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/mapper/OrderMapper.java
@@ -0,0 +1,9 @@
+package com.example.demo.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.example.demo.entity.OrderList;
+import org.springframework.stereotype.Repository;
+@Repository
+public interface OrderMapper extends BaseMapper<OrderList>{
+
+}
\ No newline at end of file
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/mapper/UserMapper.java b/Code/Backend/demo2/src/main/java/com/example/demo/mapper/UserMapper.java
new file mode 100644
index 0000000..8fed7fb
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/mapper/UserMapper.java
@@ -0,0 +1,10 @@
+package com.example.demo.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.example.demo.entity.User;
+import org.apache.ibatis.annotations.Mapper;
+import org.springframework.stereotype.Repository;
+@Repository
+public interface UserMapper extends BaseMapper<User>{
+
+}
\ No newline at end of file
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/service/Impl/MailServiceImpl.java b/Code/Backend/demo2/src/main/java/com/example/demo/service/Impl/MailServiceImpl.java
new file mode 100644
index 0000000..8b95b3d
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/service/Impl/MailServiceImpl.java
@@ -0,0 +1,122 @@
+package com.example.demo.service.Impl;
+
+import freemarker.template.Configuration;
+import com.example.demo.service.MailService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.core.io.Resource;
+import org.springframework.mail.SimpleMailMessage;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.mail.javamail.MimeMessageHelper;
+import org.springframework.stereotype.Component;
+
+import javax.mail.MessagingException;
+import javax.mail.internet.MimeMessage;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.text.MessageFormat;
+
+@Component
+public class MailServiceImpl implements MailService {
+    private final Logger logger = LoggerFactory.getLogger(this.getClass());
+    @Autowired
+    private JavaMailSender mailSender;
+
+    @Autowired
+    private Configuration configuration;
+    @Value("${mail.fromMail.addr}")
+    private String from;
+
+    @Override
+    public void sendSimpleMail(String to, String subject, String content) {
+        SimpleMailMessage message = new SimpleMailMessage();
+        message.setFrom(from);
+        message.setTo(to);
+        message.setSubject(subject);
+        message.setText(content);
+        try {
+            mailSender.send(message);
+            logger.info("简单邮件已经发送。");
+        } catch (Exception e) {
+            logger.error("发送简单邮件时发生异常！", e);
+        }
+    }
+    public String buildContent(String good, String time, String mail, String price, boolean status) {
+        //加载邮件html模
+        InputStream inputStream = null;
+        Resource resource = null;
+        BufferedReader fileReader = null;
+        StringBuffer buffer = new StringBuffer();
+        String line = "";
+        if (status) {
+            resource = new ClassPathResource("mail4seller.ftl");
+        } else {
+            resource = new ClassPathResource("mail4buyer.ftl");
+        }
+        try {
+            inputStream = resource.getInputStream();
+            fileReader = new BufferedReader(new InputStreamReader(inputStream));
+            while ((line = fileReader.readLine()) != null) {
+                buffer.append(line);
+            }
+        } catch (Exception e) {
+            logger.info("发送邮件读取模板失败{1}", e);
+        } finally {
+            if (fileReader != null) {
+                try {
+                    fileReader.close();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+            if (inputStream != null) {
+                try {
+                    inputStream.close();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+        //替换html模板中的参数
+        return MessageFormat.format(buffer.toString(), good, time, mail, price);
+    }
+    public void sendMimeMail(String good, String time, String buymail,String sellmail,String price,boolean status) {
+        MimeMessage message = mailSender.createMimeMessage();
+        if (status)
+        {
+            try {
+                //邮箱发送内容组成
+                MimeMessageHelper helper = new MimeMessageHelper(message, true);
+                helper.setSubject("N-Market预约提醒");
+                helper.setText(buildContent(good,time,buymail,price,status), true);
+                helper.setTo(sellmail);
+                helper.setFrom(from);
+                mailSender.send(message);
+            } catch (MessagingException e) {
+                logger.info("error");
+            }
+        }
+        else {
+            try {
+
+                //邮箱发送内容组成
+                MimeMessageHelper helper = new MimeMessageHelper(message, true);
+                helper.setSubject("N-Market预约提醒");
+                helper.setText(buildContent(good,time,sellmail,price,status), true);
+                helper.setTo(buymail);
+                helper.setFrom(from);
+                mailSender.send(message);
+            } catch (MessagingException e) {
+                logger.info("error");
+            }
+        }
+
+        }
+
+
+}
\ No newline at end of file
diff --git a/Code/Backend/demo2/src/main/java/com/example/demo/service/MailService.java b/Code/Backend/demo2/src/main/java/com/example/demo/service/MailService.java
new file mode 100644
index 0000000..4d12e19
--- /dev/null
+++ b/Code/Backend/demo2/src/main/java/com/example/demo/service/MailService.java
@@ -0,0 +1,6 @@
+package com.example.demo.service;
+
+public interface MailService {
+    public void sendSimpleMail(String to, String subject, String content);
+    public void sendMimeMail(String good, String time, String buymail,String sellmail,String price,boolean status);
+}
\ No newline at end of file