Mybatis配置檔案中Insert 元素標籤新增配置有哪些呢?
阿新 • • 發佈:2020-09-23
Mybatis配置檔案中Insert 元素標籤新增配置有哪些呢?
如需要跟多資料請點選下方圖片⬇(掃碼加好友→備註66,不備註拒絕新增哦)
Insert 元素標籤新增方式
- 新增記錄不返回主鍵配置
- 新增記錄返回主鍵1(屬性配置)
- 新增記錄返回主鍵2(屬性配置)
- 批量新增記錄返回影響總記錄行數(屬性配置)
案例實操
新增記錄不返回主鍵配置
<insert id="addUserNoKey" parameterType="User"> insert into user(userName,userPwd) values(#{userName},#{userPwd}) </insert>
新增記錄返回主鍵1(屬性配置)
<insert id="addUserHasKey1" parameterType="user"> <selectKey keyProperty="id" order="AFTER" resultType="int"> select LAST_INSERT_ID() as id </selectKey> insert into user(userName,userPwd) values(#{userName},#{userPwd}) </insert>
Oracle 情況
<selectKey resultType="int" order="BEFORE" keyProperty="id">
SELECT LOGS_SEQ.nextval AS ID FROM DUAL
</selectKey>
新增記錄返回主鍵2(屬性配置)
<insert id="addUserHasKey2" parameterType="user" useGeneratedKeys="true"keyProperty="id"> insert into user(userName,userPwd) values(#{userName},#{userPwd}) </insert>
批量新增記錄返回影響總記錄行數(屬性配置)
<insert id="addUserBatch" parameterType="list" >
insert into user(user_name,user_pwd) values
<foreach collection="list" item="item" separator=",">
(#{item.userName},#{item.userPwd})
</foreach>
</insert>
擴充套件
Update 元素標籤使用
更新單條記錄返回影響行數
<!-- 更新單條 -->
<update id="updateUser" parameterType="User">
update user set userName=#{userName} ,userPwd=#{userPwd} where id=#{id}
</update>
批量更新多條記錄 屬性配置
<update id="updateUserBatch" parameterType="java.util.Map">
update user set userPwd=#{pwd} where id in
<foreach collection="ids" item="item" open="(" separator="," close=")">
#{item}
</foreach>
</update>
Delete 元素標籤使用
刪除單條記錄
<delete id="delUserById" parameterType="int">
delete from user where id=#{id}
</delete>
批量刪除多條記錄(屬性配置)
<delete id="delUserBatch" parameterType="java.util.Map">
delete from user where id in
<foreach collection="ids" item="item" open="(" separator="," close=")"index="index">
#{item}
</foreach>
</delete>
或下列形式,入參為陣列型別
<delete id="deleteUserBatch2" >
delete from user where id in
<foreach collection="array" item="item" open="(" separator="," close=")">
#{item}
</foreach>
</delete>
h collection="array" item="item" open="(" separator="," close=")">
#{item}
###