java-mybaits-00203-DAO-mapper代理开发方法，多参数【推荐】

<?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.lhx.mybatis.mapperproxy.UserMapper">
    <!-- 根据id获取用户信息 -->
    <select id="findUserById" parameterType="int"
        resultType="com.lhx.mybatis.po.User">
        select * from user where id = #{id}
    </select>
    <!-- 自定义条件查询用户列表 -->
    <select id="findUserByUsername" parameterType="java.lang.String"
        resultType="com.lhx.mybatis.po.User">
        select * from user where username like ‘%${value}%‘
    </select>
    <!-- 添加用户 -->
    <insert id="insertUser" parameterType="com.lhx.mybatis.po.User">
        <selectKey keyProperty="id" order="AFTER" resultType="java.lang.Integer">
            select
            LAST_INSERT_ID()
        </selectKey>
        insert into user(username,birthday,sex,address)
        values(#{username},#{birthday},#{sex},#{address})
    </insert>
    <!-- 根据id获取用户信息 -->
    <select id="findUserByIdAndSex" resultType="com.lhx.mybatis.po.User">
        select * from user
        where id = #{0} and sex = #{1}
    </select>
</mapper>

package com.lhx.mybatis.mapperproxy;

import java.util.List;

import com.lhx.mybatis.po.User;

/**
 * 用户管理mapper
 */
public interface UserMapper {
    // 根据用户id查询用户信息
    public User findUserById(int id) throws Exception;

    // 查询用户列表
    public List<User> findUserByUsername(String username) throws Exception;

    // 添加用户信息
    public void insertUser(User user) throws Exception;
    public User findUserByIdAndSex(int id,int sex) throws Exception;
}

<?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>
    <!-- 和spring整合后 environments配置将废除 -->
    <environments default="development">
        <environment id="development">
            <!-- 使用jdbc事务管理 -->
            <transactionManager type="JDBC" />
            <!-- 数据库连接池 -->
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver" />
                <property name="url"
                    value="jdbc:mysql://localhost:3306/mybatis?characterEncoding=utf-8" />
                <property name="username" value="root" />
                <property name="password" value="root" />
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <mapper resource="mapper/UserMapper.xml" />
    </mappers>
</configuration>

package com.lhx.mybatis.mapperproxy;

import java.io.InputStream;
import java.util.Date;
import java.util.List;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Before;
import org.junit.Test;

import com.lhx.mybatis.po.User;

import junit.framework.TestCase;

public class UserMapperTest extends TestCase {

    private SqlSessionFactory sqlSessionFactory;

    protected void setUp() throws Exception {
        // mybatis配置文件
        String resource = "SqlMapConfig-MapperProxy.xml";
        InputStream inputStream = Resources.getResourceAsStream(resource);
        // 使用SqlSessionFactoryBuilder创建sessionFactory
        sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
    }

    public void testFindUserById() throws Exception {
        // 获取session
        SqlSession session = sqlSessionFactory.openSession();
        // 获取mapper接口的代理对象
        UserMapper userMapper = session.getMapper(UserMapper.class);
        // 调用代理对象方法
        User user = userMapper.findUserById(1);
        System.out.println(user);
        // 关闭session
        session.close();

    }

    public void testFindUserByUsername() throws Exception {
        SqlSession sqlSession = sqlSessionFactory.openSession();
        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
        List<User> list = userMapper.findUserByUsername("张");
        System.out.println(list.size());

    }

    public void testInsertUser() throws Exception {
        // 获取session
        SqlSession session = sqlSessionFactory.openSession();
        // 获取mapper接口的代理对象
        UserMapper userMapper = session.getMapper(UserMapper.class);
        // 要添加的数据
        User user = new User();
        user.setUsername("张三");
        user.setBirthday(new Date());
        user.setSex("1");
        user.setAddress("北京市");
        // 通过mapper接口添加用户
        userMapper.insertUser(user);
        // 提交
        session.commit();
        // 关闭session
        session.close();
    }

    public void testFindUserByIdAndSex() throws Exception {
        // 获取session
        SqlSession session = sqlSessionFactory.openSession();
        // 获取mapper接口的代理对象
        UserMapper userMapper = session.getMapper(UserMapper.class);
        // 调用代理对象方法
        User user = userMapper.findUserByIdAndSex(1, 2);
        System.out.println(user);
        // 关闭session
        session.close();

    }
}