add jackson

Author: chenhuawei

.gitignore

@@ -0,0 +1,3 @@
+*.iml
+.idea
+target

jackson/pom.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>tutorial-java</artifactId>
+        <groupId>biz.chenxu</groupId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>jackson</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-core</artifactId>
+            <version>2.9.10</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.9.10</version>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.4</version>
+            <optional>true</optional>
+        </dependency>
+    </dependencies>
+</project>

jackson/src/main/java/biz/chenxu/tutorial/ComplexType.java

@@ -0,0 +1,27 @@
+package biz.chenxu.tutorial;
+
+import lombok.Data;
+import lombok.ToString;
+
+import java.util.Date;
+import java.util.List;
+
+@Data
+@ToString
+public class ComplexType {
+
+    private String stringField;
+
+    private Date dateField;
+
+    private Integer intField;
+
+    private Double doubleField;
+
+    private Float floatField;
+
+    private List<ComplexType> complexTypeList;
+
+    private ComplexType[] complexArray;
+
+}

jackson/src/main/java/biz/chenxu/tutorial/JacksonApplication.java

@@ -0,0 +1,41 @@
+package biz.chenxu.tutorial;
+
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import java.io.IOException;
+import java.util.List;
+
+public class JacksonApplication {
+
+    public static void main(String[] args) throws IOException {
+        ObjectMapper objectMapper = new ObjectMapper();
+
+        String json = "{\n" +
+                "  \"stringField\": \"demoData\",\n" +
+                "  \"dateField\": \"2020-02-23\",\n" +
+                "  \"intField\": 1,\n" +
+                "  \"doubleField\": 1.0,\n" +
+                "  \"floatField\": 1.0,\n" +
+                "  \"complexTypeList\": [\n" +
+                "    {\n" +
+                "      \"stringField\": \"innerDemoData\",\n" +
+                "      \"dateField\": \"2020-02-23\",\n" +
+                "      \"intField\": 1,\n" +
+                "      \"doubleField\": 1.0,\n" +
+                "      \"floatField\": 1.0\n" +
+                "    }\n" +
+                "  ]\n" +
+                "}";
+
+        JsonNode rootNode = objectMapper.readTree(json);
+        JsonNode listNode = rootNode.get("complexTypeList");
+        JsonParser token = objectMapper.treeAsTokens(listNode);
+        List<ComplexType> list = objectMapper.readValue(token, new TypeReference<List<ComplexType>>(){});
+        for (ComplexType complexType : list) {
+            System.out.println(complexType);
+        }
+    }
+}

pom.xml

@@ -14,6 +14,7 @@
         <module>fast-json</module>
         <module>guava</module>
         <module>mysql</module>
+        <module>jackson</module>
     </modules>
 
     <properties>