系统启动,一段时间不操作,然后在来操作时,报错如下: Caused by: java.sql.SQLException: Couldn't perform the operation getAutoCommit: You can't perform any operations on this connection. It has been automatically closed by Proxool for some reason (see logs). at org.logicalcobw
ERROR - No operations allowed after connection closed. 2011-12-07 11:36:09 - ERROR - query failed org.hibernate.exception.JDBCConnectionException: could not execute query at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74)
报错详情: java.net.SocketException: Socket closed at java.net.SocketInputStream.socketRead0(Native Method) at java.net.SocketInputStream.socketRead(SocketInputStream.java:116) at java.net.SocketInputStream.read(SocketInputStream.java:171) at java.net.Soc
今天正式环境下的有一个功能报错,看了下weblogic日志,报连接已经关闭. com.ibatis.common.jdbc.exception.NestedSQLException: --- The error occurred while applying a parameter map. --- Check the CheckErrorDetail.getDeviceErrorDetailCount-InlineParameterMap. --- Check the results
现象:更换android studio libs文件夹下的jar包,重新编译代码报错:Cannot locate factory for objects of type DefaultGradleConnector, as ConnectorServiceRegistry has been closed. 解决办法:重启android studio 参考链接:http://code.google.com/p/android/issues/detail?id=80591
1 Canvas教程 <canvas>是一个新的用于通过脚本(通常是JavaScript)绘图的HTML元素.例如,他可以用于绘图.制作图片的组合或者简单的动画(当然并不那么简单).It can for instance be used to draw graphs, make photo compositions or do simple (and not so simple) animations. 1.1 基本用法 Basic usage <canvas>元素 Let's s
一些类与方法说明 1)ByteBuf ByteBuf的API说明: Creation of a buffer It is recommended to create a new buffer using the helper methods in Unpooled rather than calling an individual implementation's constructor. 建议用Unpooled类的帮助方法来创建一个ByteBuf,而不是用new ByteBuf()创建.具体如
问题1: 显示的是灰色的界面,不能正常显示图像. 解决方法:在imshow之后加上waitKey即可.原因here: Note:This function should be followed by waitKey function which displays the image for specified milliseconds. Otherwise, it won’t display the image. For example, waitKey() will display the w