mybatis change 3

mybatis_train/src/main/resources/mapper/AccountMapper.xml

@@ -1,15 +1,18 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+
 <mapper namespace="com.mapper.AccountMapper">
-    <select id="findAll" resultType="com.pojo.entity.AccountEntity"
+
+
+    <select id="findAll" resultType="account"
             parameterType="java.lang.Integer"
     >
         select id,user_name,balance from account where id= #{id}
     </select>
-    <update id="updateOne" parameterType="com.pojo.entity.AccountEntity">
-        update account set user_name = #{user_name} where id = #{id}
-    </update>
-    <insert id="insertOne" parameterType="com.pojo.entity.AccountEntity">
+    <insert id="insertOne" parameterType="account">
         insert into account(user_name,balance) value (#{user_name},#{balance})
     </insert>
+    <update id="updateOne" parameterType="account">
+        update account set user_name= #{user_name},balance=#{balance} where id = #{id}
+    </update>
 </mapper>

mybatis_train/src/main/resources/mybatisConfig.xml

@@ -4,6 +4,10 @@
 <configuration>
     <!--数据源的配置信息会单独放在jdbc.properties文件中，这里加载到mybatis配置文件来，使用的时候用EL表达式${}-->
     <properties resource="jdbc.properties"></properties>
+    <!--    Mapper文件注册-->
+    <typeAliases>
+        <typeAlias type="com.pojo.entity.AccountEntity" alias="account"></typeAlias>
+    </typeAliases>
     <!--    核心配置信息-->
     <environments default="xmq_config">
         <!--        数据库相关配置-->
@@ -19,8 +23,12 @@
             </dataSource>
         </environment>
     </environments>
-    <!--    Mapper文件注册-->
+
     <mappers>
+
         <mapper resource="mapper/AccountMapper.xml"/>
+<!--        使用class方式引入-->
+<!--        <mapper class="com.mapper.AccountMapper"></mapper>-->
     </mappers>
+
 </configuration>

mybatis_train/src/main/resources/sqlConfig.xml

@@ -0,0 +1,26 @@
+<?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" >
+
+<configuration>
+
+	<environments default="dev">
+		<environment id="dev">
+			<transactionManager type="JDBC"></transactionManager>
+			<dataSource type="POOLED">
+				<property name="driver" value="com.mysql.jdbc.Driver"/>
+				<property name="url" value="jdbc:mysql://localhost:3306/zhengshi?zeroDateTimeBehavior=convertToNull&amp;useUnicode=true&amp;autoReconnect=true&amp;characterEncoding=UTF-8&amp;serverTimezone=Asia/Shanghai"/>
+				<property name="username" value="root"/>
+				<property name="password" value=""/>
+			</dataSource>
+		</environment>
+	</environments>
+<!-- 加载映射文件-->
+	<mappers>
+		<mapper resource="mapper/AccountMapper.xml"></mapper>
+	</mappers>
+
+</configuration>
+
+

mybatis_train/src/test/java/Test1.java

@@ -7,24 +7,27 @@ import org.junit.Test;
 
 import java.io.IOException;
 import java.io.InputStream;
-import java.util.List;
 
 public class Test1 {
 
     @Test
     public void test() throws IOException {
         InputStream resourceAsStream = Resources.getResourceAsStream("mybatisConfig.xml");
-        SqlSessionFactory build = new SqlSessionFactoryBuilder().build(resourceAsStream);
-        SqlSession sqlSession = build.openSession();
-        List<AccountEntity> objects = sqlSession.selectList("com.mapper.AccountMapper.findAll",7);
-//        AccountEntity optEntity = new AccountEntity();
-//        optEntity.setId(7);
-//        optEntity.setUser_name("张7123");
-//        int update = sqlSession.update("com.mapper.AccountMapper.updateOne", optEntity);
-        AccountEntity addEntity = new AccountEntity();
-        addEntity.setUser_name("zz1");
-        addEntity.setBalance(27.5);
-        int insert = sqlSession.insert("com.mapper.AccountMapper.insertOne", addEntity);
+        SqlSessionFactory sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder().build(resourceAsStream);
+        SqlSession sqlSession = sqlSessionFactoryBuilder.openSession();
+        // 查询
+    //    List<AccountEntity> objects = sqlSession.selectList("com.mapper.AccountMapper.findAll");
+        // 插入
+        AccountEntity accountEntity = new AccountEntity();
+        accountEntity.setUser_name("这");
+        accountEntity.setBalance(70.4);
+        sqlSession.insert("com.mapper.AccountMapper.insertOne",accountEntity);
+        AccountEntity updateEntity = new AccountEntity();
+        updateEntity.setId(9);
+        updateEntity.setUser_name("我是");
+        updateEntity.setBalance(100.0);
+        sqlSession.update("com.mapper.AccountMapper.updateOne",updateEntity);
+        // mybatis 如果执行了更新操作需要提交事务
         sqlSession.commit();
         sqlSession.close();
     }