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MyBatis注意事项二

2015-11-04 17:04 218 查看
<?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="environment">
<environment id="environment">

<transactionManager type="JDBC"></transactionManager>
<dataSource type="POOLED">

<property name="driver" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/world"/>
<property name="username" value="root"/>
<property name="password" value="123456"/>

</dataSource>

</environment>

</environments>

<mappers>
<mapper resource="mybatis/beans/emp.xml"/>

</mappers>

</configuration>
<environments default="environment">
<environment id="environment<span style="font-family: Arial, Helvetica, sans-serif; font-size: 12px;">"></span>
把default和id写成一样的,否则获取的SqlSession获取不了,会报NullPointerExceprion空指针异常
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