1 问题描述
通过MyBatis框架,对Mysql数据库做批量更新,对于的Mapper.xml配置:
<update id="updateTestcaseNodeBatch" parameterType="List">
<foreach collection="list" item="nodeVO" separator=";">
UPDATE testcase_node
<set>
name=#{nodeVO.name},
version=#{nodeVO.version},
description=#{nodeVO.description},
last_modify_user=#{nodeVO.createUser},
last_modify_time=#{nodeVO.createTime}
</set>
<where>
object_id=#{nodeVO.objectId} AND root_id=#{nodeVO.rootId}
</where>
</foreach>
</update>
异常信息:
### The error may involve com.hirain.testmanagement.mapper.TestcaseNodeMapper.updateTestcaseNodeBatch-Inline
### The error occurred while setting parameters
### SQL: UPDATE testcase_node SET name=?, version=?, description=?, last_modify_user=?, last_modify_time=? WHERE object_id=? AND root_id=? ; UPDATE testcase_node SET name=?, version=?, description=?, last_modify_user=?, last_modify_time=? WHERE object_id=? AND root_id=?
### 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 testcase_node
SET name='Türstatus',
version=4,
' at line 8
; 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 testcase_node
SET name='Türstatus',
version=4,
' at line 8
at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:233)
2 排除过程
- 仔细检查 map文件 和数据库表字段没有错误;【正常】
- 将生产的SQL,贴到Mysql Client端执行;【正常】
- 再次检查JDBC驱动链接URL;【不正常】
3 解决问题
最终结果是因为配置的 mysql jdbc链接字符串 默认不支持一次性执行多个sql语句
;但是在我们的 update map中需要执行多个 update语句。最后加上参数 "allowMultiQueries" 设置为true 如下:
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true" />
4 总结问题
问题解决!关键是解决问题的思路,由易到难,有外到内,确保最基本的配置不出问题。