最近在维护的一个比较旧的项目,发现总是隔一段时间JDBC就报错: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot get a connection, pool error Timeout waiting for idle object 实在看不出来是在哪发生连接池泄露了,先调参数吧.把log打出来 找到了个博客:http://elf8848.…
严重: StandardWrapper.Throwableorg.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database!…
写jsp加载数据驱动以后老是提示Only a type can be imported. com.mysql.jdbc.Connection resolves to a package的错误,然而改成java就无报错 出错的原因:没有成功引入包 解决方法:将mysql-connector-java-5.1.39-bin.jar放到tomcat的bin目录下就可以解决 …