underlying专题

解决The underlying connection was closed: A connection that was expected to be kept alive was closed

关于”The underlying connection was closed: A connection that was expected to be kept alive was closed”通常都在移动客户端,但是是有服务器端报送的,而且在客户端也不会经常报错,这只是一个偶尔会出现的问题,可以说是一个棘手的BUG,因此我的这个文章也只能决绝部分人的问题(针对手机客户端),如果调试还有问题

错误:Connections could not be acquired from the underlying database! 内有可能导致的错误的集合 Method ..is abstract

最近在写SSM的整合,在测试mybatis的时候报错: Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Con

记录一次Communications link failure due to underlying exception connect异常定位

长时间未启动项目,再次启动的时候报错: org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Communications link failure due to underlying exception:  ** BEGIN NESTED EXCEPTION **  ja