<!-- 传入多个参数时，自动转换为map形式 -->

     <insert id="insertByColumns" useGeneratedKeys="true" keyProperty="id">

         insert into user (id, name, age) values (NULL ,#{param1}, #{param2})

     </insert>

     <insert id="insertByZhuJie" useGeneratedKeys="true" keyProperty="id">

         insert into user (id, name, age) values (NULL ,#{name}, #{age})

     </insert>

     <insert id="insertByMap" useGeneratedKeys="true" keyProperty="id">

         insert into user (id, name, age) values (NULL ,#{name}, #{age})

     </insert>

     // 插入数据；多参数三种方式：默认Map、使用Map传参和使用注解别名

     public int insertByColumns(String name, int age);

     public int insertByZhuJie(@Param("name") String name, @Param("age") int age);

     public int insertByMap(Map map);

     //   多参数插入数据的三种方式

     @Test

     public void testInsertByColumns() {

         UserDao userDao = session.getMapper(UserDao.class);

         String name = "insertByColumns";

         int age = 33;

 //        int n = userDao.insertByColumns(name, age);

 //        int n = userDao.insertByZhuJie(name, age);

         Map map = new HashMap();

         map.put("name", name);

         map.put("age", age);

         int n = userDao.insertByMap(map);

         session.commit();

         System.out.println("插入数据name：" + name);

         System.out.println(n);

     }