MyBatis連接MySql

1、下載並解壓MyBatis

https://github.com/mybatis/mybatis-3/releases

2、解壓取出mybatis-3.4.1.jar（壓縮文件中有參考文檔mybatis-3.4.1.pdf）

3、在工程中引入mybatis-3.4.1.jar和mysql驅動包mysql-connector-java-5.1.31-bin.jar

（MySql驅動下載請參考：http://blog.csdn.net/laozhou243/article/details/52419974）

4、創建mybatis的配置文件mybatis-config.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">
				<property name="driver" value="com.mysql.jdbc.Driver" />
				<property name="url" value="jdbc:mysql://localhost/zjrtest" />
				<property name="username" value="abc" />
				<property name="password" value="cba" />
			</dataSource>
		</environment>
	</environments>
	<mappers>
		<mapper resource="com/zjr/test/mybatis/conf/BlogMapper.xml" />
	</mappers>
</configuration>

其中mapper中配的BlogMapper.xml在下面步驟中創建

5、  創建測試表tbl_blog，並插入數據

create table tbl_blog
(
id int(4) not null primary key;
name char(20) not null,
sex char(1) not null default '0',
email char(64)
);

insert into tbl_blog values(1,'zjr','m','[email protected]');

insert into tbl_blog values(2,'Rose','f','[email protected]');

6、 創建測試表對應的Java類Blog.java

<pre name="code" class="java">/**
 * 文件名：Blog.java
 * 版本信息：Version 1.0
 * 日期：2016年9月3日
 * 版權所有
 */
package com.zjr.test.mybatis;

public class Blog
{
    int id;
    String name;
    char sex;
    String email;
    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 char getSex()
    {
        return sex;
    }
    public void setSex(char sex)
    {
        this.sex = sex;
    }
    public String getEmail()
    {
        return email;
    }
    public void setEmail(String email)
    {
        this.email = email;
    }

}

7、 創建映射文件BlogMapper.xml（步驟4中的配置）

<?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="com.zjr.test.mybatis.BlogMapper">
	<select id="selectBlog" resultType="com.zjr.test.mybatis.Blog">
		select * from tbl_blog where id = #{id}
	</select>
</mapper>

8、 創建測試類MyBatisSamples.java

/**
 * 文件名：MyBatisSamples.java
 * 版本信息：Version 1.0
 * 日期：2016年9月3日
 * 版權所有
 */
package com.zjr.test.mybatis;

import java.io.IOException;
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;


public class MyBatisSamples
{

    /**
     * 方法描述：
     * 
     * @param:
     * @return:
     * @version: 1.0
     * @author: Administrator
     * @version: 2016年9月3日 上午11:42:18
     * @throws IOException
     */
    public static void main(String[] args) throws IOException
    {
        String resource = "com/zjr/test/mybatis/conf/mybatis-config.xml";
        InputStream inputStream = Resources.getResourceAsStream(resource);
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        SqlSession session = sqlSessionFactory.openSession();
        try
        {
            Blog blog = session.selectOne("com.zjr.test.mybatis.BlogMapper.selectBlog", 1);
            System.out.println(blog.getName());
            blog = session.selectOne("com.zjr.test.mybatis.BlogMapper.selectBlog", 2);
            System.out.println(blog.getName());
        }
        finally
        {
            session.close();
        }
    }

}

9、執行main查看結果