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周夕_Mybatis1/pom.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<?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">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.cesgroup</groupId>
+    <artifactId>周夕_Mybatis1</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>8.0.17</version>
+        </dependency>
+        <dependency>
+            <groupId>org.mybatis</groupId>
+            <artifactId>mybatis</artifactId>
+            <version>3.2.8</version>
+        </dependency>
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>fastjson</artifactId>
+            <version>1.2.54</version>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+    
+</project>
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周夕_Mybatis1/src/main/java/com/cesgroup/User.java

+package com.cesgroup;
+package com.cesgroup;
+
+import java.io.Serializable;
+
+import com.alibaba.fastjson.JSONObject;
+public class User implements Serializable {
+	public int getId() {
+		return id;
+	}
+	public void setId(int id) {
+		this.id = id;
+	}
+
+	public String getName() {
+		return name;
+	}
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public JSONObject getInfo() {
+		return info;
+	}
+	public void setInfo(JSONObject info) {
+		this.info = info;
+	}
+
+	@Override
+	public String toString() {
+		return "User [id=" + id + ", name=" + name + ", info=" + JSONObject.toJSONString(info) + "]";
+	}
+
+	int id;
+	String name;
+	JSONObject info;
+
+}

周夕_Mybatis1/src/main/java/com/cesgroup/UserMapper.java

+package com.cesgroup;
+package com.cesgroup;
+
+import java.util.List;
+
+public interface UserMapper {
+
+    public void insert(User user);
+    public User selectUser(String userName);
+    public List<User> selectAll();
+}
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周夕_Mybatis1/src/main/java/com/cesgroup/handle.java

+package com.cesgroup;
+package com.cesgroup;
+import java.sql.CallableStatement;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+import org.apache.ibatis.type.BaseTypeHandler;
+import org.apache.ibatis.type.JdbcType;
+
+import com.alibaba.fastjson.JSONObject;
+public class handle extends BaseTypeHandler<JSONObject> {
+
+    @Override
+    public JSONObject getNullableResult(ResultSet rs, String cloumName) throws SQLException {
+        String infoJsonString= rs.getString(cloumName);
+        JSONObject infObject=null;
+        try {
+            infObject = JSONObject.parseObject(infoJsonString);
+            //System.out.println("----将json串转成json对象成功！----");
+        } catch (Exception e) {
+            System.err.println("将json串转成json对象失败！");;
+        }
+        return infObject;
+    }
+
+
+    @Override
+    public JSONObject getNullableResult(CallableStatement arg0, int arg1) throws SQLException {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public void setNonNullParameter(PreparedStatement statement, int i, JSONObject infoObject, JdbcType jdbcType) throws SQLException {
+        // TODO Auto-generated method stub
+        try {
+            String userInfoString= JSONObject.toJSONString(infoObject);
+            statement.setString(i, userInfoString);
+            //System.out.println("----将对象转化为字符串成功！----："+userInfoString);
+        } catch (Exception e) {
+            System.out.println("----将对象转化为字符串失败！----");
+
+        }
+
+    }
+
+
+    @Override
+    public JSONObject getNullableResult(ResultSet arg0, int arg1) throws SQLException {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+}

周夕_Mybatis1/src/main/resources/Mymapper.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper  PUBLIC "-//mybatis.org//DTD com.Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.cesgroup.UserMapper"> <!--mapper  -->
+
+    <resultMap type="user" id="userList">
+        <!-- type为返回列表元素的类全名或别名 -->
+        <result column="id" property="id"/>
+        <result column="name" property="name"/>
+
+        <result column="info" property="info"
+                typeHandler="com.cesgroup.handle"/>
+    </resultMap>
+
+
+    <insert id="insert" parameterType="user">
+    insert into users(id,name,info) values(#{id}, #{name},#{info})
+  </insert>
+    <select id="selectUser" parameterType="String" resultType="user">
+    SELECT * FROM users WHERE name = #{name}
+  </select>
+    <select id="selectAll" resultMap="userList">
+    SELECT * FROM users
+  </select>
+</mapper>
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周夕_Mybatis1/src/main/resources/db.properties

+driver=com.mysql.cj.jdbc.Driver
+driver=com.mysql.cj.jdbc.Driver
+url=jdbc:mysql://localhost:3306/test?seUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=Hongkong
+username=root
+password=123456
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周夕_Mybatis1/src/main/resources/mybatis-config.xml

+<?xml version="1.0" encoding="UTF-8" ?>
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE configuration
+  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
+  "http://mybatis.org/dtd/mybatis-3-config.dtd">
+<!-- 根标签 -->
+<configuration>
+<properties resource="db.properties"></properties>
+<typeHandlers>
+        <typeHandler handler="com.cesgroup.handle"></typeHandler>
+    </typeHandlers>
+   <!-- 环境，可以配置多个，default：指定采用哪个环境 -->
+   <environments default="dev">
+      <!-- id：唯一标识 -->
+      <environment id="dev">
+         <!-- 事务管理器，JDBC类型的事务管理器 -->
+         <transactionManager type="JDBC" />
+         <!-- 数据源，池类型的数据源 -->
+         <dataSource type="POOLED">
+            <property name="driver" value="${driver}" /> <!-- 配置了properties，所以可以直接引用 -->
+            <property name="url" value="${url}" />
+            <property name="username" value="${username}" />
+            <property name="password" value="${password}" />
+         </dataSource>
+      </environment>
+   </environments>
+    <mappers>
+     <mapper resource="MyMapper.xml" />
+   </mappers>
+  </configuration>
\ No newline at end of file

周夕_Mybatis1/src/main/resources/mybatis.sql

+
+
+SET NAMES utf8mb4;
+SET FOREIGN_KEY_CHECKS = 0;
+
+-- ----------------------------
+-- Table structure for mybatis
+-- ----------------------------
+DROP TABLE IF EXISTS `users`;
+CREATE TABLE `users`  (
+  `id` int(32) NOT NULL,
+  `name` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL,
+  `info` varchar(1000) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL,
+  PRIMARY KEY (`id`) USING BTREE
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
+
+SET FOREIGN_KEY_CHECKS = 1;

周夕_Mybatis1/周夕_Mybatis1.iml

+<?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0" encoding="UTF-8"?>
+<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
+    <output url="file://$MODULE_DIR$/target/classes" />
+    <output-test url="file://$MODULE_DIR$/target/test-classes" />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Maven: mysql:mysql-connector-java:8.0.17" level="project" />
+    <orderEntry type="library" name="Maven: com.google.protobuf:protobuf-java:3.6.1" level="project" />
+    <orderEntry type="library" name="Maven: org.mybatis:mybatis:3.2.8" level="project" />
+    <orderEntry type="library" name="Maven: com.alibaba:fastjson:1.2.54" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: junit:junit:4.12" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.hamcrest:hamcrest-core:1.3" level="project" />
+  </component>
+</module>
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