关于：com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException异常排查

• 打印执行SQL

==>  Preparing: update tutor_answer SET like_num = ? where id = ? and is_deleted = 0 ; update tutor_answer SET like_num = ? where id = ? and is_deleted = 0 
==> Parameters: 12(Integer), 1(Long), 25(Integer), 1194953642230501376(Long)

• 执行报错

### SQL: update tutor_answer              SET like_num = ?              where id = ? and is_deleted = 0          ;              update tutor_answer              SET like_num = ?              where id = ? and is_deleted = 0
### 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 tutor_answer   SET like_num = 25   where id = 11949' at line 5; bad SQL grammar [];

 

• 问题出现原因：

  批量更新时，Mysql数据库配置属性

spring.datasource.url=jdbc:mysql://IP:PORT/dBname?autoReconnect=true&useUnicode=true

忘记添加：&allowMultiQueries=true

问题很简单，但是一时没想起来原因，浪费的一些时间排查原因，发一篇文章加深下记忆