用smartupload下载文件的时候，用户点“取消”会抛出异常，怎么办？

[yugang1219]

用smartupload下载文件，用户点击了下载文件那个链接，会弹出一个对话框，询问是否保存文件，若点击“保存”则可以正常下载，但如果用户点击“取消”则会抛出如下异常：

java.net.SocketException: Connection reset by peer: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(Unknown Source)
at java.net.SocketOutputStream.write(Unknown Source)
at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:737)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:434)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:349)
at org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:761)
at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:118)
at org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:570)
at org.apache.coyote.Response.doWrite(Response.java:560)
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:353)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:354)
at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:381)
at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:370)
at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89)
at com.jspsmart.upload.SmartUpload.downloadFile(SmartUpload.java:301)
at com.jspsmart.upload.SmartUpload.downloadFile(SmartUpload.java:261)
at com.jspsmart.upload.SmartUpload.downloadFile(SmartUpload.java:249)
at org.apache.jsp.user.download_jsp._jspService(download_jsp.java:80)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
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:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
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:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)


这是这么回事，如何解决？

[yugang1219]

这个异常不能让它不发生么

[sagezk]

在 SmartUpload.downloadFile() 这个方法外加上 try catch 块，把异常捕获到不让它继续往上抛就能解决。

[Quote=引用 3 楼 yugang1219 的回复:]
这个异常不能让它不发生么
[/Quote]

你不改 SmartUpload 源代码是没法避免的。

[linpyi]

试着捕获异常,或者重新书写源代码

[martin0711]

jf

[内存泄漏]

把异常捕获掉就可以了..

[kokobox]

smartupload会出现这个问题，连接被重置异常

下载那个页面用try块截获一下，抛出异常就关闭页面就可以了

[laorer]

是啊，异常，就处理掉呗