Question

如何在mybatis的配置文件中引入properties

Answer 1

<?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>
<!--引入外部properties文件 -->
<properties resource="db.properties"></properties>
<!--和Spring整合后 environments 配置将废除 -->
<environments default="development">
<environment id="development">
<!--使用JDBC事务管理 -->
<transactionManager type="JDBC"/>
<!--数据库连接池 -->
<dataSource type="POOLED">
<property name="driver" value="${jdbc.driverClass}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</dataSource>
</environment>
</environments>
<!--加载xml文件 -->
<mappers>
<mapper resource="mapper/UserMapper.xml"/>
</mappers>
</configuration>