MyBatis XML配置模板

Posted 2020-11-10 江城歌吹风流

Jar包导入

添加依赖到pom.xml中(maven项目)

<!--MBatis依赖包-->
<dependency>
  <groupId>org.mybatis</groupId>
  <artifactId>mybatis</artifactId>
  <version>3.4.1</version>
</dependency>

mybatis-config.xml模板

<?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>
    <properties>
        <property name="driver" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/test"/>
        <property name="username" value="root"/>
        <property name="password" value="123"/>
    </properties>
    <settings>
        <!--显示SQL语句，以便于调试-->
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="${driver}"/>
                <property name="url" value="${url}"/>
                <property name="username" value="${username}"/>
                <property name="password" value="${password}"/>
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <mapper resource="com/hgd/userMapper.xml"/>
        <mapper resource="com/hgd/employeeMapper.xml"/>
        <mapper resource="com/hgd/mapper.xml"/>
    </mappers>
</configuration>

映射文件模板:

<?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" >
<mapper namespace="${NAMESPACE}" >
<!--填写映射-->
</mapper>

如果希望映射文件关联一个接口，将上面的${NAMESPACE}替换成接口的全类名。

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