工具包:

Netbeans8

Maven

MyBatis

1. 使用netbeans創建項目,選擇文件->新建項目->Maven->Web應用程序;

2. 打開項目目錄,在依賴關系上右擊->添加依賴關系->查詢框輸入mysql->選擇mysql:mysql-connector-java->點開選擇對應的mysql驅動版本.

3. 創建數據庫和表

create database foretaste;
use foretaste
create table user_info(id int(11) not null primary key auto_increment,
 nickname varchar(50) not null, phone_num int(11) not null, 
 created_time timestamp not null default current_timestamp, 
 last_update_time timestamp not null default current_timestamp);

4. 點開->項目的其他源->src/main/source,在默認包上右擊,xml文件,命名為mybatis-config.xml

<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/foretaste?zeroDateTimeBehavior=convertToNull "/>  
                <property name="username" value="root"/>  
                <property name="password" value="mysql123"/>  
            </dataSource>  
        </environment>  
</environments>
<mappers>
    <mapper resource="com.shadow.foretaste.UserInfoMapper.xml"/>
</mappers>

5. 新建User實體類,新建com.shadow.foretaste.entity包,創建UserInfo實體類

6. 在source文件下,新建mapper文件夾,並創建UserInfoMapper.xml文件

<?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">
<mapper namespace="com.shadow.foretaste.UserInfoMapper">
    <insert id="insert" parameterType="com.shadow.foretaste.entity.UserInfo" useGenerateKeys="true">
        insert_into user_nfo (nickname, phone_num, created_time, last_update_time) 
        values (#{nickname}, #{phone_num}, #{created_time), #{last_update_time})
    </insert>
    <select id ="select" resultType="com.shadow.foretaste.entity.UserInfo">
        select * from user_info
    </select>
</mapper>

7. 創建MyBatisUtils獲取sqlSession

package com.shadow.foretaste.util;

import java.io.InputStream;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

/**
 *
 * @author sunny
 */
public class MyBatisUtils {
    private static SqlSessionFactory factory = null;
    
    //初始化session工廠
    public static void initFactory() throws Exception{
        InputStream inputStream = Resources.getResourceAsStream("mybatis-config.xml");
        factory = new SqlSessionFactoryBuilder().build(inputStream);
    }
    /**
     * 獲取sqlSession會話
     * @return 
     */
    public static SqlSession getSession(){
        if(null == factory){
            try {
                initFactory();
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
        return factory.openSession();
    }
}

8. 創建測試方法驗證配置

import com.shadow.foretaste.util.MyBatisUtils;
import org.apache.ibatis.session.SqlSession;
import static org.junit.Assert.assertNotNull;
import org.junit.Test;

/**
 *
 * @author sunny
 */
public class TesMyBatis {
    @Test
    public void testMyBatis(){
        SqlSession session = MyBatisUtils.getSession();
        assertNotNull(session);
        if(session != null){
            session.close();
        }
    }
}

本文出自 “數據挖掘工程師的成長歷程” 博客，請務必保留此出處http://qianqiansun.blog.51cto.com/13271301/1965328

MyBatis搭建項目