add-jpa

.gitignore

@@ -120,3 +120,7 @@ crawler/common
 # for java
 *.class
 */target/*
+
+# for vim
+*.vim/*
+

java/SpringBoot-HelloWorld/src/main/java/com/wxnacy/spring/Application.java

@@ -24,7 +24,7 @@ public CommandLineRunner commandLineRunner(ApplicationContext ctx) {
             String[] beanNames = ctx.getBeanDefinitionNames();
             Arrays.sort(beanNames);
             for (String beanName : beanNames) {
-                System.out.println("beanName"+ beanName);
+                System.out.println(beanName);
             }
 
         };

java/SpringBoot-JPA/pom.xml

@@ -0,0 +1,45 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.wxnacy.spring</groupId>
+    <artifactId>SpringBoot-JPA</artifactId>
+    <packaging>jar</packaging>
+    <version>1.0-SNAPSHOT</version>
+    <name>SpringBoot-JPA</name>
+    <url>http://maven.apache.org</url>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>1.5.9.RELEASE</version>
+    </parent>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+                    <groupId>mysql</groupId>
+                    <artifactId>mysql-connector-java</artifactId>
+                </dependency>
+    </dependencies>
+    <properties>
+        <java.version>1.8</java.version>
+    </properties>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>

java/SpringBoot-JPA/src/main/java/com/wxnacy/spring/Application.java

@@ -0,0 +1,18 @@
+package com.wxnacy.spring;
+
+import java.util.Arrays;
+
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Bean;
+
+@SpringBootApplication
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+
+}

java/SpringBoot-JPA/src/main/java/com/wxnacy/spring/User.java

@@ -0,0 +1,42 @@
+package com.wxnacy.spring;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class User{
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Integer id;
+    private String name;
+
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public User() {
+    }
+
+    public User(Integer id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+    public User(String name) {
+        this.name = name;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public Integer getId() {
+        return id;
+    }
+}

java/SpringBoot-JPA/src/main/java/com/wxnacy/spring/UserController.java

@@ -0,0 +1,45 @@
+package com.wxnacy.spring;
+
+import java.util.List;
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Autowired;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class UserController {
+
+    @Autowired
+    private UserRepository userRepository;
+
+	@GetMapping("/user")
+    public List<User> users(
+        @RequestParam(required=false, defaultValue="wxnacy") String name
+            ) {
+        List<User> res = userRepository.findByName(name);
+        return res;
+	}
+
+	@GetMapping("/user/{id}")
+    public User user(
+        @PathVariable Integer id
+            ) {
+        User user = userRepository.findById(id);
+        return user;
+	}
+
+	@PostMapping("/user")
+    public User create(
+        @RequestBody Map<String, String> body
+            ) {
+        User user = new User(body.get("name"));
+        User item = userRepository.save(user);
+        return item;
+	}
+}

java/SpringBoot-JPA/src/main/java/com/wxnacy/spring/UserRepository.java

@@ -0,0 +1,9 @@
+package com.wxnacy.spring;
+
+import java.util.List;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface UserRepository extends JpaRepository<User, Integer> {
+    List<User> findByName(String name);
+    User findById(Integer id);
+}

java/SpringBoot-JPA/src/main/resources/application.properties

@@ -0,0 +1,5 @@
+# spring.jpa.hibernate.ddl-auto=create
+spring.datasource.url=jdbc:mysql://localhost:3306/study
+spring.datasource.username=root
+spring.datasource.password=wxnacy
+spring.datasource.driver-class-name=com.mysql.jdbc.Driver