mybatis连接数据库映射文件

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下面是连接数据库的一个映射文件

<?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"><configuration>  <environments default="mysql_developer">     <environment id="mysql_developer">        <transactionManager type="jdbc"></transactionManager>        <dataSource type="pooled">          <property name="driver" value="com.mysql.jdbc.Driver"></property>          <property name="url" value="jdbc:mysql://localhost:3306/mybatis"></property>          <property name="username" value="root"></property>          <property name="password" value="123456"></property>          </dataSource>     </environment>          <environment id="oracle_developer">        <transactionManager type="jdbc"></transactionManager>        <dataSource type="pooled">          <property name="driver" value="oracle.jdbc.driver.OracleDriver"></property>          <property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:mldn"></property>          <property name="username" value="scott"></property>          <property name="password" value="tiger"></property>          </dataSource>     </environment>  </environments>    <mappers>     <mapper resource="cn/itcast/app01/StudentMapper.xml"></mapper>  </mappers></configuration>

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