随笔分类 - SSM
摘要：mapper接口 public void deleteUser(@Param("ids") String ids); mapper.xml <delete id="deleteUser"> delete from t_user where id in (${ids}) </delete> 测试代码
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摘要：public User queryUserByLike(@Param("arg") String arg); 方式一： <select id="queryUserByLike" resultType="org.example.entity.User"> select * from t_user wh
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摘要：返回User类型的list <select id="queryAllUser" resultType="org.example.entity.User"> select * from t_user </select> public interface UserMapper { public void
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摘要：引入依赖 <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.12</version> </dependency> resources目录下添加log4j.xml配置文件 <?xml ve
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摘要：<!-- 加载映射文件 --> <mappers> <!--<mapper resource="mappers/UserMapper.xml"></mapper>--> <!-- 以包的方式引入映射文件，但是必须满足下面2个条件： 1.mapper接口和映射文件所在的包必须一致 2.mapper接口
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摘要：<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dt
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摘要：引入依赖 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.
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