需求

添加用户信息

环境说明

MyBatis全局配置文件、mysql数据库相关信息、映射文件User.xml等，都是基于这篇博客mybatis学习笔记(三)：根据用户ID(主键)查询用户信息，有需要可以点击查看

映射文件

在User.xml中配置添加用户的statement

添加内容如下：

    <!-- 添加增用户
     parameterType：指定输入参数类型为pojo，即用户信息
     ${}中指定pojo的属性名，接收到pojo对象的属性值，mybatis通过OGNL获取对象的属性值。
     用户信息表user的id是自增主键，在sql语句中不需要写上id字段及对应的属性值
     -->
    <insert id="insertUser" parameterType="com.trc.qa.po.User">

        INSERT INTO user (username,birthday,sex,address) VALUES(#{username},#{birthday},#{sex},#{address})

    </insert>

测试代码

//新增用户
    @Test
    public void insertUserTest() throws IOException {

        //mybatis配置文件
        String resource = "SqlMapConfig.xml";

        //得到配置文件流
        InputStream inputStream = Resources.getResourceAsStream(resource);

        //创建会话工厂，传入mybatis的配置文件信息
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);

        //通过工厂得到SqlSession
        SqlSession sqlSession = sqlSessionFactory.openSession();

        //创建用户对象
        User user = new User();
        user.setUsername("王大锤");
        user.setBirthday(new Date());
        user.setSex("1");
        user.setAddress("河南洛阳");

        sqlSession.insert("test.insertUser", user);

        //提交事务
        sqlSession.commit();

        //获取用户信息主键
        System.out.println(user.getId());

        sqlSession.close();
    }

程序执行结果

......

[DEBUG]14:55:55,088,main,[Class]JdbcTransaction, [Method]openConnection, Opening JDBC Connection
[DEBUG]14:55:55,373,main,[Class]PooledDataSource, [Method]popConnection, Created connection 1630521067.
[DEBUG]14:55:55,373,main,[Class]JdbcTransaction, [Method]setDesiredAutoCommit, Setting autocommit to false on JDBC Connection [com.mysql.jdbc.JDBC4Connection@612fc6eb]
[DEBUG]14:55:55,376,main,[Class]insertUser, [Method]debug, ==>  Preparing: INSERT INTO user (username,birthday,sex,address) VALUES(?,?,?,?) 
[DEBUG]14:55:55,419,main,[Class]insertUser, [Method]debug, ==> Parameters: 王大锤(String), 2018-07-25 14:55:55.083(Timestamp), 1(String), 河南洛阳(String)
[DEBUG]14:55:55,423,main,[Class]insertUser, [Method]debug, <==    Updates: 1
[DEBUG]14:55:55,425,main,[Class]insertUser!selectKey, [Method]debug, ==>  Preparing: select last_insert_id() 
[DEBUG]14:55:55,427,main,[Class]insertUser!selectKey, [Method]debug, ==> Parameters: 
[DEBUG]14:55:55,455,main,[Class]insertUser!selectKey, [Method]debug, <==      Total: 1
[DEBUG]14:55:55,455,main,[Class]JdbcTransaction, [Method]commit, Committing JDBC Connection [com.mysql.jdbc.JDBC4Connection@612fc6eb]
0
[DEBUG]14:55:55,456,main,[Class]JdbcTransaction, [Method]resetAutoCommit, Resetting autocommit to true on JDBC Connection [com.mysql.jdbc.JDBC4Connection@612fc6eb]

......

查看数据库相关数据，已经插入一条用户信息