mybatis增删改除

 SqlMapConfig.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>
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <!--设置数据库连接-->
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/prado" />
                <property name="username" value="root"/>
                <property name="password" value="0909"/>
            </dataSource>
        </environment>
    </environments>
<!--设置mapper映射源-->
    <mappers>
        <mapper resource="config/SqlMap/User.xml"/>
    </mappers>
</configuration>

User.xml

<?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="test">
    <!--映射总名称test，查询名findUserById-->
    <select id="findUserById" parameterType="int" resultType="config.jdbc.po.User">
        select * from user where id=#{id};
    </select>

    <select id="findName" parameterType="String" resultType="config.jdbc.po.User">
        SELECT * FROM user where name like #{value};
    </select>
    <insert id="insertUser" >
        insert into user(name,password) values (#{name},#{password});
    </insert>
    <delete id="deleteUser" >
        delete from user where name=#{name};
    </delete>
</mapper>

 User.java

public class User  {
    private int id;
    private String name;
    private String password;

    public User() {
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}

main

import config.jdbc.po.User;
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 java.io.IOException;
import java.io.InputStream;
import java.util.List;


public class mybatisFirst { //增加信息
    //    删除信息
    private static void deleteUser() throws IOException {
        String re = "config/SqlMapConfig.xml";
        InputStream is = Resources.getResourceAsStream(re);
        SqlSessionFactory ssf = new SqlSessionFactoryBuilder().build(is);
        SqlSession sso = ssf.openSession();

        sso.delete("test.deleteUser", "大龙");
        sso.commit();  //删除要提交
        sso.close();
    }

    private static void insertUser() throws IOException {
        String re = "config/SqlMapConfig.xml";
        InputStream is = Resources.getResourceAsStream(re);
        SqlSessionFactory ssf = new SqlSessionFactoryBuilder().build(is);
        SqlSession sso = ssf.openSession();

        User user = new User();
        user.setName("大龙");
        user.setPassword("6666");
        sso.insert("test.insertUser", user);
        sso.commit();  //插入要提交
        sso.close();
    }

    //    查询单条信息
    private static void findUserById() throws IOException {
        String re = "config/SqlMapConfig.xml";
        InputStream is = Resources.getResourceAsStream(re);
        SqlSessionFactory ssf = new SqlSessionFactoryBuilder().build(is);
        SqlSession sso = ssf.openSession();

        User u1 = sso.selectOne("test.findUserById", 2);
        System.out.println(u1.getName());
        sso.close();
    }

    //    查询多条信息
    private static void findName() throws IOException {
        String re = "config/SqlMapConfig.xml";
        InputStream is = Resources.getResourceAsStream(re);
        SqlSessionFactory ssf = new SqlSessionFactoryBuilder().build(is);
        SqlSession sso = ssf.openSession();

        List<User> u2 = sso.selectList("test.findName", "%");
        System.out.println(u2.toString());
        sso.close();
    }

    //    主方法调用
    public static void main(String[] args) {
        try {
            deleteUser();
//            insertUser();
            findName();
            findUserById();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}