• User.java

package com.sunxiaping.domain;
import java.io.Serializable;
import java.util.Date;
public class User implements Serializable {
    private Integer id;
    private String username;
    private Date birthday;
    private String gender;
    private String address;
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public Date getBirthday() {
        return birthday;
    }
    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }
    public String getGender() {
        return gender;
    }
    public void setGender(String gender) {
        this.gender = gender;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", username='" + username + '\'' +
                ", birthday=" + birthday +
                ", gender='" + gender + '\'' +
                ", address='" + address + '\'' +
                '}';
    }
}

• UserMapper.java

package com.sunxiaping.mapper;
import com.sunxiaping.domain.User;
import org.apache.ibatis.annotations.*;
import java.util.List;
public interface UserMapper {
    /**
     * 查询所有用户信息
     *
     * @return
     */
    @Select(" SELECT * FROM `user`")
    @Results({
            @Result(id = true, property = "id", column = "id"),
            @Result(property = "username", column = "username"),
            @Result(property = "birthday", column = "birthday"),
            @Result(property = "gender", column = "gender"),
            @Result(property = "address", column = "address"),
    })
    List<User> findAll();
    /**
     * 添加用户信息
     *
     * @param user
     */
    @Insert(" INSERT INTO `user` (username,birthday,gender,address) VALUES (#{username},#{birthday},#{gender},#{address})")
    void saveUser(User user);
    /**
     * 修改用户信息
     *
     * @param user
     */
    @Update(" UPDATE `user` set username = #{username},gender= #{gender} ,address = #{address} WHERE id = #{id} ")
    void updateUser(User user);
    /**
     * 删除用户信息
     *
     * @param id
     */
    @Delete(" DELETE FROM `user` WHERE id = #{id} ")
    void deleteById(Integer id);
}

• 测试：

package com.sunxiaping;
import com.sunxiaping.domain.User;
import com.sunxiaping.mapper.UserMapper;
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.After;
import org.junit.Before;
import org.junit.Test;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.List;
public class UserTest {
    SqlSessionFactory sqlSessionFactory = null;
    SqlSession sqlSession = null;
    @Before
    public void before() throws IOException {
        String resource = "mybatis-config.xml";
        InputStream inputStream = Resources.getResourceAsStream(resource);
        sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
    }
    @After
    public void after() {
        if (sqlSession != null) {
            sqlSession.close();
        }
    }
    @Test
    public void testFindAll() throws IOException {
        sqlSession = sqlSessionFactory.openSession(true);
        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
        List<User> userList = userMapper.findAll();
        System.out.println("userList = " + userList);
    }
    @Test
    public void testSaveUser() {
        sqlSession = sqlSessionFactory.openSession(true);
        User user = new User();
        user.setUsername("zhangsan");
        user.setBirthday(new Date());
        user.setGender("男");
        user.setAddress("江苏苏州");
        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
        userMapper.saveUser(user);
    }
    @Test
    public void testUpdateUser() {
        sqlSession = sqlSessionFactory.openSession(true);
        User user = new User();
        user.setId(1);
        user.setUsername("张三");
        user.setGender("女");
        user.setAddress("江苏苏州");
        user.setBirthday(new Date());
        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
        userMapper.updateUser(user);
    }
    @Test
    public void testDeleteById() {
        sqlSession = sqlSessionFactory.openSession(true);
        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
        userMapper.deleteById(1);
    }
}