mapping文件的编写

mapping文件的编写（以及实体类与xml中类型的对应关系）

2017年02月18日 11:31:36 转角人生 阅读数：2918 标签： mapping文件 更多

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版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.youkuaiyun.com/xuanzhangran/article/details/55657497

注意事项（1）： 
实体类 - 数据库 — xml（jdbc） 
Integer – int – INTEGER 
Float – float– REAL 
Byte –tinyint– TINYINT 
Long –bigint– BIGINT 
String – varchar–VARCHAR

mapping的代码如下： 
缺少的对应字段可以自己加上：

<?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.idorabox.manage.dao.jd.JdTokenDao" ><!--对应的Dao接口位置 -->
  <resultMap id="BaseResultMap" type="com.idorabox.entity.JdToken" ><!--对应的实体类位置 -->
    <id column="id" property="id" jdbcType="INTEGER" />
    <result column="token" property="token" jdbcType="VARCHAR" />
    <result column="create_date_time" property="createDateTime" jdbcType="TIMESTAMP" />
    <result column="update_time" property="updateTime" jdbcType="TIMESTAMP" />
  </resultMap>
  <sql id="Base_Column_List" >
    id, token, create_date_time, update_time
  </sql>
  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
    select 
    <include refid="Base_Column_List" />
    from tbl_jd_token
    where id = #{id,jdbcType=INTEGER}
  </select>
  <select id="queryList" resultMap="BaseResultMap">
    select 
    <include refid="Base_Column_List" />
    from tbl_jd_token
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
    delete from tbl_jd_token
    where id = #{id,jdbcType=INTEGER}
  </delete>
  <insert id="insertSelective" parameterType="com.idorabox.entity.JdToken" >
    insert into tbl_jd_token
    <trim prefix="(" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        id,
      </if>
      <if test="token != null" >
        token,
      </if>
      <if test="createDateTime != null" >
        create_date_time,
      </if>
      <if test="updateTime != null" >
        update_time,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        #{id,jdbcType=INTEGER},
      </if>
      <if test="token != null" >
        #{token,jdbcType=VARCHAR},
      </if>
      <if test="createDateTime != null" >
        #{createDateTime,jdbcType=TIMESTAMP},
      </if>
      <if test="updateTime != null" >
        #{updateTime,jdbcType=TIMESTAMP},
      </if>
    </trim>
  </insert>
  <update id="updateByPrimaryKeySelective" parameterType="com.idorabox.entity.JdToken" >
    update tbl_jd_token
    <set >
      <if test="token != null" >
        token = #{token,jdbcType=VARCHAR},
      </if>
      <if test="createDateTime != null" >
        create_date_time = #{createDateTime,jdbcType=TIMESTAMP},
      </if>
      <if test="updateTime != null" >
        update_time = #{updateTime,jdbcType=TIMESTAMP},
      </if>
    </set>
    where id = #{id,jdbcType=INTEGER}
  </update>
</mapper>