mybatis简单测试增删改查

mybatis入门测试程序

1.SqlMapConfig.xml

<configuration>
    
    <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/mybatis?characterEncoding=utf-8" />
                <property name="username" value="root" />
                <property name="password" value="" />
            dataSource>
        environment>
    environments>
    
    <mappers>
        <mapper resource="sqlmap/User.xml"/>
    mappers>
configuration>

2.User.xml

<mapper namespace="test">

    
    
    
    
    <select id="findUserById" parameterType="int" resultType="com.lijie.po.User">
        select
        * from user where id = #{id}
    select>

    
    
    <select id="findUserByName" parameterType="java.lang.String"
        resultType="com.lijie.po.User">
        select * from user where username like
        '%${value}%'
    select>
    
    <insert id="insertUser" parameterType="com.lijie.po.User">
        
        <selectKey keyProperty="id" order="AFTER" resultType="java.lang.Integer">
            SELECT
            LAST_INSERT_ID()
        selectKey>
        
        
        insert into
        user(username,birthday,sex,address)
        value(#{username},#{birthday},#{sex},#{address})
    insert>

    
    <delete id="deleteUser" parameterType="java.lang.Integer">
        delete from user where id
        = #{id}
    delete>

    
    <update id="updateUser" parameterType="com.lijie.po.User">
        update user set username =
        #{username},
        birthday = #{birthday},
        sex = #{sex},
        address = #{address}
        where id = #{id}
    update>
mapper>

4.User.java

package com.lijie.po;

import java.util.Date;

public class User {
    private int id;
    private String username;// 用户姓名
    private String sex;// 性别
    private Date birthday;// 生日
    private String address;// 地址
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public Date getBirthday() {
        return birthday;
    }
    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    public User(int id, String username, String sex, Date birthday, String address) {
        super();
        this.id = id;
        this.username = username;
        this.sex = sex;
        this.birthday = birthday;
        this.address = address;
    }
    public User(String username, String sex, Date birthday, String address) {
        super();
        this.username = username;
        this.sex = sex;
        this.birthday = birthday;
        this.address = address;
    }
    public User() {
        super();
        // TODO Auto-generated constructor stub
    }
    @Override
    public String toString() {
        return "User [id=" + id + ", username=" + username + ", sex=" + sex + ", birthday=" + birthday + ", address="
                + address + "]";
    }


}

5.MybatisTest

package com.lijie.mybatis;

import java.io.IOException;
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.After;
import org.junit.Before;
import org.junit.Test;

import com.lijie.po.User;

/**
 * 
 * @author jie
 *
 */
public class MybatisTest {

    private SqlSession session = null;

    @Before
    public void before() throws IOException {
        // 配置文件名
        String resource = "SqlMapConfig.xml";
        // 通过mybatis的Resources获取配置文件信息
        InputStream resourceAsStream = Resources.getResourceAsStream(resource);
        // 创建会话工厂
        SqlSessionFactory build = new SqlSessionFactoryBuilder().build(resourceAsStream);
        // 通过工厂获得session
        session = build.openSession();
    }

    @Test
    public void findUserById() throws IOException {

        // 通过session操作数据库
        // 第一个 namespace.statement
        // 第二个就是parameterType需要的参数
        User user = session.selectOne("test.findUserById", 1);
        System.out.println(user);

    }

    /**
     * 查询
     * 
     * @throws IOException
     */
    @Test
    public void findUserByName() throws IOException {

        // 通过session操作数据库
        // 第一个 namespace.statement
        // 第二个就是parameterType需要的参数
        User user = session.selectOne("test.findUserById", 1);
        List selectList = session.selectList("test.findUserByName", "小明");
        System.out.println(selectList);

    }

    /**
     * 增加
     * 
     * @throws IOException
     */
    @Test
    public void insertUser() throws IOException {
        User user = new User("lijie", "1", new Date(), "chongqing");
        session.insert("test.insertUser", user);
        session.commit();
    }

    /**
     * 删除
     * 
     * @throws IOException
     */
    @Test
    public void deleteUser() throws IOException {
        session.delete("test.deleteUser", 88888);
        session.commit();
    }

    /**
     * 修改
     * 
     * @throws IOException
     */
    @Test
    public void updateUser() throws IOException {
        User user = new User(24, "lijie", "1", new Date(), "chongqing");
        session.delete("test.updateUser", user);
        session.commit();
    }

    @After
    public void after() {
        // 关闭会话
        session.close();
    }
}