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…

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…

运行项目报错 Error querying database. Cause: java.sql.SQLException: No suitable driver found for http://www.example.com org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.sql.SQLException: No suitable driver found f…

hello_test是我的存储过程的名字,在mapper.xml文件中是这么写的 <select id="getPageByProcedure" statementType="CALLABLE" databaseId="oracle"> {call hello_test( #{start,mode=IN,jdbcType=INTEGER}, #{end,mode=IN,jdbcType=INTEGER}, #{count,mode=O…

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…

一.报错信息 1.  前端登录界面 2.  后台应用日志 报错信息一致为: $$callid= $$thread=[Service Monitor and Runtime Enroment] $$host= $$userid= $$ts=2017-05-23 09:18:13 $$remotecall=[nc.bs.mw.ejbsql.IerpXADataSource] $$debuglevel=ERROR  $$msg=initializing the connection pool fail…

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…

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'…

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…