Exception in thread "Thread-20" java.lang.IndexOutOfBoundsException

[yangyile2011]

在我进行 图片下载的时候，会报

Exception in thread "Thread-20" java.lang.IndexOutOfBoundsException
	at java.io.FileOutputStream.writeBytes(Native Method)
	at java.io.FileOutputStream.write(FileOutputStream.java:345)
	at com.ehl.itgs.batch.action.thread.DownloadHttpURLThread.run(DownloadHttpURLThread.java:52)

这是为什么？当我再次点击进行图片下载，图片倒是能够下载下来，但是也报错

 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet default threw exception
java.lang.IllegalStateException
	at org.apache.catalina.connector.ResponseFacade.sendError(ResponseFacade.java:407)
	at org.apache.struts2.dispatcher.Dispatcher.sendError(Dispatcher.java:888)
	at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:569)
	at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
	at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
	at org.apache.coyote.http11.Http11NioProcessor.process(Http11NioProcessor.java:886)
	at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:721)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:2256)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)

并且下载下来的图片是空的，即字节为0.请教各位这是为什么？

[rumlee]

DownloadHttpURLThread.java:52 看看这个位置发生了什么问题啊。 感觉像是下标越界之类的问题。

[yangyile2011]

引用 1 楼 rumlee 的回复:

DownloadHttpURLThread.java:52 看看这个位置发生了什么问题啊。

感觉像是下标越界之类的问题。

即使不报这个错误了，下载下来的图片还是有问题会呈现这样

[yangyile2011]

为啥没人能回答呢

[迷林]

线程中的异常“主题-20”java.lang.IndexOutOfBoundsException 在java.io.FileOutputStream.writeBytes（本地方法） 在java.io.FileOutputStream.write（FileOutputStream.java:345） 在com.ehl.itgs.batch.action.thread.DownloadHttpURLThread.run（DownloadHttpURLThread.java:52） Servlet.service（）为默认的servlet异常抛出 java.lang.IllegalStateException 两处地方