删除
UserMapper.java新增一个方法
package cn.bdqn.dao;
import java.util.List;
import java.util.Map;
import org.apache.ibatis.annotations.Param;
import cn.bdqn.pojo.User;
public interface UserMapper {
List<User> getUserList();
List<User> getUserLikeUserName(String userName); //模糊查询
List<User> getUserLikeUserNameAndUserRole(User user);
List<User> getUserByMap(Map<String,Object> map);
int add(User user);
int update(User user);
int updatePassword(@Param("id")Long id,@Param("newPassword")String newPassword);
int delete(Long id);
}UserMapper.xml新增一个select
<?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="cn.bdqn.dao.UserMapper">
<select id="getUserList" resultType="cn.bdqn.pojo.User">
Select * from smbms_user
</select>
<select id="getUserLikeUserName" parameterType="String" resultType="user">
select * from smbms_user where userName like concat('%',#{userName},'%')
</select>
<select id="getUserLikeUserNameAndUserRole" parameterType="user" resultMap="userList">
select u.*,r.roleName from smbms_user u,smbms_role r
where
r.id=u.userRole
and userRole=#{userRole}
and userName like concat('%',#{userName},'%')
</select>
<resultMap type="user" id="userList">
<id column="id" property="id"/>
<result column="userName" property="userName" />
<result column="userCode" property="userCode" />
<result column="roleName" property="userRoleName" />
</resultMap>
<select id="getUserByMap" parameterType="map" resultType="user">
select * from smbms_user where userRole=#{userRole} and userName like concat('%',#{userName},'%')
</select>
<insert id="add" parameterType="user">
INSERT INTO smbms_user (
`userCode`,
`userName`,
`userPassword`,
`gender`,
`birthday`,
`phone`,
`address`,
`userRole`,
`createdBy`,
`creationDate`)
VALUES(
#{userCode},
#{userName},
#{userPassword},
#{gender},
#{birthday},
#{phone},
#{address},
#{userRole},
#{createdBy},
#{creationDate})
</insert>
<update id="update" parameterType="user">
UPDATE `smbms_user` SET
`userCode`=#{userCode},
`userName`=#{userName},
`userPassword`=#{userPassword},
`gender`=#{gender},
`birthday`=#{birthday},
`phone`=#{phone},
`address`=#{address},
`userRole`=#{userRole},
`modifyBy`=#{modifyBy},
`modifyDate`=#{modifyDate}
WHERE id=#{id}
</update>
<update id="updatePassword">
UPDATE `smbms_user` SET
`userPassword`=#{newPassword}
WHERE id=#{id}
</update>
<delete id="delete" parameterType="long">
delete from smbms_user where id=#{id}
</delete>
</mapper>实体类代码：
package cn.bdqn.test;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.ibatis.session.SqlSession;
import org.apache.log4j.Logger;
import cn.bdqn.dao.UserMapper;
import cn.bdqn.pojo.User;
import cn.bdqn.util.MyBatisUtil;
public class Test {
/*private static Logger logger = Logger.getLogger("Test");*/
public static void main(String[] args) {
//getUserCount();
//getUserList();
//getUserByName(sqlSession);
//getUserLikeNameAndRole(sqlSession);
//getUserByMap(sqlSession);
SqlSession sqlSession = MyBatisUtil.getSqlSession();
//增加
//User user=new User(17L, "andy", "刘德华", "1234567", 1, "13422369777", "HK", new Date(), 2, null, null, 1, new Date());
//int count = sqlSession.getMapper(UserMapper.class).add(user);
//修改
//User user=new User(17L, "andy", "陈大锤", "1234567", 1, "13422369777", "HK", new Date(), 2, null, null, 1, new Date());
//int count = sqlSession.getMapper(UserMapper.class).update(user);
//修改密码
//int count = sqlSession.getMapper(UserMapper.class).updatePassword(17L, "0000000");
//删除
int count = sqlSession.getMapper(UserMapper.class).delete(17L);
sqlSession.commit();
System.out.println("删除了"+count+"条数据！");
MyBatisUtil.closeSession(sqlSession);
}
/* private static void getUserByMap(SqlSession sqlSession) {
Map<String,Object> map=new HashMap<String,Object>();
map.put("userRole", 3);
map.put("userName", "孙");
List<User> users = sqlSession.getMapper(UserMapper.class).getUserByMap(map);
for (User user1 : users) {
System.out.println(user1);
}
}*/
/* private static void getUserLikeNameAndRole(SqlSession sqlSession) {
User user=new User();
user.setUserName("孙");
user.setUserRole(3);
List<User> users = sqlSession.getMapper(UserMapper.class).getUserLikeUserNameAndUserRole(user);
for (User user1 : users) {
System.out.println(user1);
}
MyBatisUtil.closeSession(sqlSession);
}*/
/* private static void getUserByName(SqlSession sqlSession) {
List<User> users = sqlSession.getMapper(UserMapper.class).getUserLikeUserName("孙");
for (User user : users) {
System.out.println(user);
}
MyBatisUtil.closeSession(sqlSession);
}*/
/* public static void getUserList(){
SqlSession session = MyBatisUtil.getSqlSession();
//綁定Mapper接口
List<User> userList = session.getMapper(UserMapper.class).getUserList();
for (User user : userList) {
logger.debug("用户：" + user);
}
MyBatisUtil.closeSession(session);
}*/
/* private static void getUserCount() {
SqlSession session = MyBatisUtil.getSqlSession();
// 调用mapper文件进行数据操作
int count = session.selectOne("cn.bdqn.dao.UserMapper.count");
logger.debug("用户数量是：" + count);
MyBatisUtil.closeSession(session);
}*/
}
运行结果如下：
[DEBUG] 2018-09-30 00:16:27,395 org.apache.ibatis.transaction.jdbc.JdbcTransaction - Opening JDBC Connection
[DEBUG] 2018-09-30 00:16:27,658 org.apache.ibatis.datasource.pooled.PooledDataSource - Created connection 2015601401.
[DEBUG] 2018-09-30 00:16:27,658 cn.bdqn.dao.UserMapper.delete - ooo Using Connection [com.mysql.jdbc.JDBC4Connection@7823a2f9]
[DEBUG] 2018-09-30 00:16:27,658 cn.bdqn.dao.UserMapper.delete - ==> Preparing: delete from smbms_user where id=?
[DEBUG] 2018-09-30 00:16:27,705 cn.bdqn.dao.UserMapper.delete - ==> Parameters: 17(Long)
[DEBUG] 2018-09-30 00:16:27,784 org.apache.ibatis.transaction.jdbc.JdbcTransaction - Committing JDBC Connection [com.mysql.jdbc.JDBC4Connection@7823a2f9]
删除了1条数据！
[DEBUG] 2018-09-30 00:16:27,863 org.apache.ibatis.transaction.jdbc.JdbcTransaction - Resetting autocommit to true on JDBC Connection [com.mysql.jdbc.JDBC4Connection@7823a2f9]
[DEBUG] 2018-09-30 00:16:27,863 org.apache.ibatis.transaction.jdbc.JdbcTransaction - Closing JDBC Connection [com.mysql.jdbc.JDBC4Connection@7823a2f9]
[DEBUG] 2018-09-30 00:16:27,863 org.apache.ibatis.datasource.pooled.PooledDataSource - Returned connection 2015601401 to pool.
数据库：
