项目中批量update

业务场景是，每条修改的值都不相同

dao

xml:

 做到这一步还没有完；此时mysql还不支持批量修改会报错

Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: 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 'UPDATE weibo_content
            SET
                EMOTION = 0.0
            W' at line 7
; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: 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 'UPDATE weibo_content

当时一直以为是自己的语法有误其实不是的，这是因为配置数据源的时候缺少配置

&allowMultiQueries=true这条语句允许一次提交多条sql语句。特别是分号；

 完美解决，还是百度发现的