Java ques： Unknown initial character set index ‘255‘ received from server. Initial client character

报错：

Unknown initial character set index '255' received from server. Initial client character set can be forced via the 'characterEncoding' property.

从错误的提示信息中发现字符集设置出现问题

解决：

数据库地址上修改下就可以了

String url = "jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8";

最终要删除 \WebContent\WEB-INF\lib目录下的。mysql-connector的jar文件。原因是：MySQL驱动和数据库字符集设置不搭配

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