Unknown initial character set index ‘255’ received from server. Initial client character set can be forced via the ‘characterEncoding’ property.
这个问题是由于字符集设置出现问题
解决方法:将url的格式写成如下所示:
这里的db_school是你所要连接的数据库
Unknown initial character set index '255' received from server.解决方法
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