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Specified key was too long; max key length is 1000 bytes問題解決

本文轉載自   查看原文   2018-12-26 09:21   7364    java/ mysql

今天使用帆軟的報表平台管理，進行外接數據庫配置，嘗試多次一直提示數據導入失敗

java的報錯

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Specified key was too long; max key length is 1000 bytes

總結了下出錯的原因：

　　1.DB engine 是MyIsAm
　　2.字符集是 utf8 ,1個utf8=3bytes
　　3.最后就是 (100+255)*3>1000 所以報錯

SHOW ENGINES

查了下解決方案有：修改DB engine 至 innodb；更改字符集；減小字段長度

我采用的解決方案是修改DB engine為innodb

修改mysql配置文件，my.ini下面部分

default-storage-engine=INNODB

重啟mysql

再次配置外接數據庫，數據庫數據導入成功

 


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