########java FTP问题
问题描述如下：
   文件上功能之前在window、linux系统都可以成功，今天linux系统此功能突然不可以了，window系统可以。报异常如下：

org.apache.commons.net.io.CopyStreamException: IOException caught while copying.

	at org.apache.commons.net.io.Util.copyStream(Util.java:129)

	at org.apache.commons.net.ftp.FTPClient.__storeFile(FTPClient.java:385)

	at org.apache.commons.net.ftp.FTPClient.storeFile(FTPClient.java:1379)

	at com.topnet.stag.common.FTPTools.upFile(FTPTools.java:152)

	at com.topnet.crane.action.UpFileAction.upload(UpFileAction.java:115)

	at com.topnet.crane.action.UpFileAction.execute(UpFileAction.java:90)

	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)

	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)

	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)

	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)

	at com.topnet.crane.commons.SetEncodingFilter.doFilter(SetEncodingFilter.java:31)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)

	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)

	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)

	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)

	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)

	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)

	at java.lang.Thread.run(Thread.java:662)

报异常的那一行，如下截图：

------解决方案--------------------
突然不好用，硬盘满了？