报错内容: java.sql.SQLException: The server time zone value '�й���׼ʱ��' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time…

Mysql报错java.sql.SQLException:null,message from server:"Host '27,45,38,132' is not allowed to connect 远程连接mysql数据库,出现异常: null,message from server:"Host '27,45,38,132' is not allowed to connect 解决方案: 原因是:远程服务器不允许你访问它的数据库.所以,我们要对远程服务器进行设置,使它允许你进行连接…

报错:java.sql.SQLException: The server time zone value '�й���׼ʱ��' is unrecognized 在IDEA运行是报出例如相识的错误时: java.sql.SQLException: The server time zone value '�й���׼ʱ��' is unrecognized or represents more than one time zone. You must configure either the se…

先是报错255,这个时候需要把 jdbc:mysql://localhost:3306/projUse 写成 jdbc:mysql://localhost:3306/projUse?useUnicode=true&characterEncoding=utf8 后来报错 java.sql.SQLException: Unknown system variable 'tx_isolation' 解决办法: 在pom.xml文件中将MySQL Connector / J版本升级为8: <!-- M…

今天连接mysql数据库报错如下: java.sql.SQLException: The server time zone value '�й���׼ʱ��' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more s…

在MySQL命令行输入如下命令: use mysql; select host from user; update user set host ='%' where user ='root'; 然后重启MySQL服务.…

这个是今天写新项目的是后,写插入语句测试用例的时候报这个错误, 其实错误的原因就是插入语句的前面的列和后面的值 的个数不对. 错在此,仔细检查一下,看看少了哪一个,然后修改就可以了.…

报这个错可能是因为用了低版本的的客户端.驱动连接高版本的mysql服务器. 解决方式有三种:升级客户端版本.修改服务端认证方式和适应服务端认证方式. 我是通过升级客户端版本解决,参考一下链接: Upgrading to MySQL Connector/J 8.0 同时收集了其他的解决问题的链接: 连接mysql 出现:java.sql.SQLException: Unable to load authentication plugin 'caching_sha2_password'…

java.sql.SQLException: The server time zone value '�й���׼ʱ��' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the 'serverTimezone' configuration property) to use a more specifc time zone…

异常:java.sql.SQLException: Before start of result set 解决方法:使用rs.getString();前一定要加上rs.next(); sm = conn.createStatement(); ResultSet rs = null; String sql_max = "SELECT id FROM a WHERE name= '" + name + "' ORDER BY online_time DESC LIMIT 1&qu…