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mybatis的报错总结_____2Error updating database. Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the ri

时间:2019-07-26 01:32:30      阅读:735      评论:0      收藏:0      [点我收藏+]

标签:base   trim   server   update   LLC   near   bat   网上   打印   

在编写动态sql时 trim的属性写错了,如下图:

错误示范:

(接口的xml配置文件中:)

1  <update id="modifyBill" parameterType="Bill">
2         update smbms_bill
3         <trim suffix="set" prefixOverrides="," prefix="where id=#{id}">
4         <if test="billCode!=null">billCode=#{billCode},</if>
5             <if test="productName!=null">productName=#{productName},</if>
6             <if test="productDesc!=null">productDesc=#{productDesc}</if>
7         </trim>
8     </update>

报错日志:

Error updating database.  Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘where id=3 billCode=‘33333‘,


//可以看到日志中打印出来的sql语句也是有错的,如下:
### SQL: update smbms_bill          where id=? billCode=?,             productName=?,             productDesc=? set

 

正确的示范:

接口的xml配置文件中:

 <!--最后一个没有逗号~~~~~-->
    <update id="modifyBill" parameterType="Bill">
        update smbms_bill
        <trim prefix="set" prefixOverrides="," suffix="where id=#{id}">
        <if test="billCode!=null">billCode=#{billCode},</if>
            <if test="productName!=null">productName=#{productName},</if>
            <if test="productDesc!=null">productDesc=#{productDesc}</if>
        </trim>
    </update>

打印出来的sql语句:

[com.xbf.dao.bill.BillMapper.modifyBill]-==>  Preparing: update smbms_bill set billCode=?, productName=?, productDesc=? where id=? 

总结:(网上找的图,感觉说的很清晰!)

prefix:字首 eg:set

prefixOverrides:字首的替换 eg:  ,

suffix:后缀 eg:where id=#{ id }

技术图片

mybatis的报错总结_____2Error updating database. Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the ri

标签:base   trim   server   update   LLC   near   bat   网上   打印   

原文地址:https://www.cnblogs.com/xbfchder/p/11247715.html

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