• 问题描述：如下图：

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

at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1073)

• 解决方案：

JDBC的url设置编码

url=jdbc:mysql://localhost:3306/newsdb?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT%2B8