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DaLian369个人博客
Home Page: http://DaLian369.github.io
License: MIT License
This project forked from wqbin/wqbin.github.io
DaLian369个人博客
Home Page: http://DaLian369.github.io
License: MIT License
//第一个异常
Loading class com.mysql.jdbc.Driver'. This is deprecated. The new driver class is
com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.
意思是 mysqljdbc . driver被弃用了新的驱动类是“com.mysql.cjdbc.driver”。驱动程序通过SPI自动注册,而手动加载类通常是不必要的,解决方案如下:
//解决方法
把com.mysql.jdbc.Driver 改为com.mysql.cj.jdbc.Driver 即可
//第二个异常
java.sql.SQLException: The server time zone value 'Öйú±ê׼ʱ¼ä' is unrecognized or represents more than one time
提示系统时区出现错误,可以在mysql中执行命令:
set global time_zone='+8:00'
或者在数据库驱动的url后加上serverTimezone=UTC参数
写代码的时候要注意,如果该参数是‘?’后的第一个,即
jdbc:mysql://localhost:3306/exam?serverTimezone=UTC
是没有问题的,但如果不是第一个,即
jdbc:mysql://localhost:3306/exam?characterEncoding=utf8&serverTimezone=UTC
这种写法是会报错的,会提示The reference to entity “serverTimezone” must end with the ‘;’ delimiter.
运行后控制台也会出现
对实体 “serverTimezone” 的引用必须以 ‘;’ 分隔符结尾。
的错误提示。
将代码改为
jdbc:mysql://localhost:3306/exam?characterEncoding=utf8&serverTimezone=UTC
即可。在xml的配置文件中 ;要用 & 代替。
最后我是在mysql中执行命令: set global time_zone='+8:00' ,解决问题的。
在url后面加参数都不行。。。
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