Java web Dao层的作用简介

Dao : Date Access Object通常用于操作数据库的

ArticleMapper.java

package com.sooware.med.dao;
import java.util.List;
public interface ArticleMapper {
int deleteByPrimaryKey(Integer id);
}

Article.java

package com.sooware.med.model;
import java.io.Serializable;
import java.util.Date;

public class Article implements Serializable {
private Integer id;
}

ArticleMapper.xml

<?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="com.sooware.med.dao.ArticleMapper">
<resultMap id="BaseResultMap" type="com.sooware.med.model.Article">
<!-- WARNING - @mbggenerated -->
<id column="id" property="id" jdbcType="INTEGER" />
</resultMap>
<sql id="Base_Column_List">
<!-- WARNING - @mbggenerated -->
id
</sql>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
<!-- WARNING - @mbggenerated -->
delete from article
where id = #{id,jdbcType=INTEGER}
</delete>
</mapper>