文章目录

# mybatis的dtd约束文件下载

（1）mybatis-3-config.dtd约束文件下载：

http://mybatis.org/dtd/mybatis-3-config.dtd

（2）mybatis-3-mapper.dtd约束文件下载：

http://mybatis.org/dtd/mybatis-3-mapper.dtd

# eclipse 配置

# config

<?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">
			<!--使用jdbc事务管理 -->
			<transactionManager type="JDBC"/>
			<!-- 数据库连接池 -->
			<dataSource type="POOLED">
				<property name="driver" value="com.mysql.jdbc.Driver"/>
				<property name="url" value="jdbc:mysql://localhost:3306/mybatis?characterEncoding=utf-8"/>
				<property name="username" value="root"/>
				<property name="password" value="1234"/>
			</dataSource>
		</environment>
	</environments>
	<!-- 引入映射配置文件 -->
	<mappers>
		<mapper resource="cn/zhku/jsj/mybatis/pojo/User.xml"/>
	</mappers>
</configuration>

# mapper

<?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">
 
<!-- namespace：命名空间，用于隔离sql-->
<mapper namespace="user">
	<select id="findUserByUsername" parameterType="String" resultType="cn.zhku.jsj.mybatis.pojo.User">
		select * from user where username like '%${value}%'
	</select>
</mapper>