MyBatis在非Spring环境下第三方DataSource设置-Druid篇

Posted 2020-08-31 陈旭猴

首先在ITEye上面看到一个同标题文章，在此说明，此文并非转载自 http://iintothewind.iteye.com/blog/2069522 ，因为这篇文章根本就是错误的，照着上面做，工程可以跑，但是dataSource根本不是druid的

首先说明一下我使用的各个软件版本:

druid版本：1.0.8

<!-- mysql数据库连接池 pool -->
<dependency>
  <groupId>com.alibaba</groupId>
     <artifactId>druid</artifactId>
     <version>1.0.8</version>
</dependency>

mybatis版本:3.2.8

<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.2.8</version>
</dependency>

 

 

MyBatis在非Spring环境下第三方DataSource设置  ，代码如下：

mybatis.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="userDefine">
        <environment id="userDefine">
            <transactionManager type="JDBC" />
            <!-- 配置数据库连接信息 -->
            <dataSource type="com.chenjun.mysite.common.MyselfDefineDataSourceFactory">
                <property name="driverClass" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/site-aliyun"/>
                <property name="username" value="root"/>
                <property name="password" value="123456"/>
            </dataSource>
        </environment>
    </environments>
      <mappers>
        <mapper resource="mappings/modules/sys/userDao.xml"/>
    </mappers>
</configuration>

MyselfDefineDataSourceFactory是 ，自定义datasourceFactory ，作为type属性给上面的mybatis.xml文件

package com.chenjun.mysite.common;

import org.apache.ibatis.datasource.unpooled.UnpooledDataSourceFactory;

import com.alibaba.druid.pool.DruidDataSource;

public class MyselfDefineDataSourceFactory extends UnpooledDataSourceFactory {
    public MyselfDefineDataSourceFactory() {
        this.dataSource = new DruidDataSource();
    }
}

验证结论:

public class UserDao {
	private static final String NAME_SPACE = "com.chenjun.mysite.entity.User";
	public User test1(){
		User user = new User();
		SqlSessionFactory sqlSessionFactory;
		try {
			sqlSessionFactory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsReader("mybatis.xml"),"userDefine");
			SqlSession session = sqlSessionFactory.openSession();
                        System.out.println("class="+session.getConfiguration().getEnvironment().getDataSource().getClass().getName());
			DataSource ds = session.getConfiguration().getEnvironment().getDataSource();
			if(ds instanceof DruidDataSource){
				System.out.println("Yes");
			}else{
				System.out.println("No");
			}
			user = session.selectOne(NAME_SPACE+"."+"test1");
		} catch (IOException e) {
			e.printStackTrace();
		}
		return user;
	}

}

　　最后输出

 

class=com.alibaba.druid.pool.DruidDataSource
Yes
15:55:09.817 [qtp2104354711-23] DEBUG org.apache.ibatis.transaction.jdbc.JdbcTransaction - Opening JDBC Connection
15:55:09.850 [qtp2104354711-23] INFO com.alibaba.druid.pool.DruidDataSource - {dataSource-1} inited

 

这才是集成druid的正确打开方式！！！