首先是我們的實體類
package com.zking.pojo;
public class users {
//id
private String uid;
//名稱
private String uname;
//構造方法
public users() {
}
//帶參數的構造方法
public users(String uid, String uname) {
this.uid = uid;
this.uname = uname;
}
//對象get/set方法
public String getUid() {
return uid;
}
public void setUid(String uid) {
this.uid = uid;
}
public String getUname() {
return uname;
}
public void setUname(String uname) {
this.uname = uname;
}
//toString方法
@Override
public String toString() {
return "users{" +
"uid='" + uid + '\'' +
", uname='" + uname + '\'' +
'}';
}
}
這是我們的mapper
<?xml version="1.0" encoding="UTF-8" ?>
<!--引用mybatisDTD文件-->
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!--namespace代表數據庫名稱-->
<mapper namespace="users">
<!--查詢所有數據-->
<select id="FandAll" resultType="com.zking.pojo.users" parameterType="com.zking.pojo.users">
SELECT * FROM users
</select>
<!--按條件查詢-->
<select id="fandbyname" resultType="com.zking.pojo.users" parameterType="java.lang.String">
SELECT * FROM users where uname=#{uname}
</select>
<!--模糊查詢方法 佔位符必須是${value}-->
<select id="fandbyname1" resultType="com.zking.pojo.users" parameterType="java.lang.String">
SELECT * FROM users where uname LIKE '%${value}%'
</select>
<!--增加的方法-->
<insert id="add" parameterType="com.zking.pojo.users">
INSERT INTO users()VALUE (#{uid},#{uname});
</insert>
<!--增加後返回主鍵-->
<insert id="add1" parameterType="com.zking.pojo.users">
<selectKey keyProperty="uid" order="AFTER" resultType="java.lang.String">
SELECT LAST_INSERT_ID();
</selectKey>
INSERT INTO users()VALUE (#{uid},#{uname});
</insert>
<!--修改方法-->
<update id="edit" parameterType="com.zking.pojo.users">
UPDATE users set uname=#{uname} where uid=#{uid}
</update>
<!--刪除方法-->
<delete id="delete" parameterType="com.zking.pojo.users">
delete from users where uid=#{uid}
</delete>
<!--刪除全部方法-->
<delete id="deleteall" >
delete from users
</delete>
</mapper>
這是我們的xml
<?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>
<!--jdbc數據庫連接池-->
<environments default="development">
<environment id="development">
<transactionManager type="JDBC"/>
<dataSource type="POOLED">
<property name="driver" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/zx?characterEncoding=UTF-8"/>
<property name="username" value="root"/>
<property name="password" value="sasa"/>
</dataSource>
</environment>
</environments>
<!--添加mapper依賴-->
<mappers>
<mapper resource="com/zking/mapper/user.xml"/>
</mappers>
</configuration>
這是我們的test調用方法
package com.zking.user1;
import com.zking.pojo.users;
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.Test;
import java.util.List;
import java.util.UUID;
public class user1 {
//查詢所有
@Test
public void FandAll() throws Exception {
//創建工程並且獲取xml文件
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream("mybatis-config.xml"));
//創建會話
SqlSession sqlSession = sqlSessionFactory.openSession();
//進行方法的調用selectList並且輸出
List<users> u = sqlSession.selectList("FandAll");
for (users u1 : u) {
System.out.println(u1.getUid() + "_____" + u1.getUname());
}
//關閉session連接
sqlSession.close();
}
//按條件查詢
@Test
public void fandbyname() throws Exception {
//創建工程並且獲取xml文件
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream("mybatis-config.xml"));
//創建會話
SqlSession sqlSession = sqlSessionFactory.openSession();
//進行方法的調用selectOne並且輸出
users u = sqlSession.selectOne("fandbyname", "張三");
System.out.println(u);
//關閉session連接
sqlSession.close();
}
//模糊查詢
@Test
public void fandbyname1() throws Exception {
//創建工程並且獲取xml文件
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream("mybatis-config.xml"));
//創建會話
SqlSession sqlSession = sqlSessionFactory.openSession();
//進行方法的調用selectList並且輸出
List<users> u = sqlSession.selectList("fandbyname1", "1");
for (users u1 : u) {
System.out.println(u1.getUid() + "_____" + u1.getUname());
}
//關閉session連接
sqlSession.close();
}
//增加方法
@Test
public void add() throws Exception {
//創建工程並且獲取xml文件
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream("mybatis-config.xml"));
//創建會話
SqlSession sqlSession = sqlSessionFactory.openSession();
//創建對象進行賦值
users u = new users();
u.setUid(String.valueOf(UUID.randomUUID()));
u.setUname("張三");
//進行方法的調用insert並且輸出
System.out.println(sqlSession.insert("add", u));
//進行對數據庫的提交操作
sqlSession.commit();
//關閉session的連接
sqlSession.close();
}
//增加後返回主鍵
@Test
public void add1() throws Exception {
//創建工程並且獲取xml文件
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream("mybatis-config.xml"));
//創建會話
SqlSession sqlSession = sqlSessionFactory.openSession();
//創建對象進行賦值
users u = new users();
// u.setUid(String.valueOf(UUID.randomUUID()));
u.setUname("張三");
//進行方法的調用insert並且輸出
System.out.println(sqlSession.insert("add1", u));
System.out.println(u);
//進行對數據庫的提交操作
sqlSession.commit();
//關閉session連接
sqlSession.close();
}
//修改
@Test
public void edit() throws Exception {
//創建工程並且獲取xml文件
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream("mybatis-config.xml"));
//創建會話
SqlSession sqlSession = sqlSessionFactory.openSession();
//創建對象進行賦值
users u = new users();
u.setUid("b2ec6f3b-0782-11ea-a8ef-fc459698e2bd");
u.setUname("李四");
//進行方法的調用update並且輸出
System.out.println(sqlSession.update("edit", u));
//進行對數據庫的提交操作
sqlSession.commit();
//關閉session連接
sqlSession.close();
}
//刪除
@Test
public void delete() throws Exception {
//創建工程並且獲取xml文件
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream("mybatis-config.xml"));
//創建會話
SqlSession sqlSession = sqlSessionFactory.openSession();
//創建對象進行賦值
users u = new users();
u.setUid("b2ec6f3b-0782-11ea-a8ef-fc459698e2bd");
//進行方法的調用delete並且輸出
System.out.println(sqlSession.delete("delete", u));
//進行對數據庫的提交操作
sqlSession.commit();
//關閉session連接
sqlSession.close();
}
//刪除全部
@Test
public void deleteall() throws Exception {
//創建工程並且獲取xml文件
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream("mybatis-config.xml"));
//創建會話
SqlSession sqlSession = sqlSessionFactory.openSession();
//進行方法的調用delete並且輸出
System.out.println(sqlSession.delete("deleteall"));
//進行對數據庫的提交操作
sqlSession.commit();
//關閉session連接
sqlSession.close();
}
}