ClientAbortException: java.net.SocketException: Connection reset by peer: socket write error
一.异常说明：
用JFreeChart 往浏览器输出图表图片时，如果刷新太快，就有如下异常
ClientAbortException: java.net.SocketException: Connection reset by peer: socket write error
代码如下：
ClientAbortException: java.net.SocketException: Connection reset by peer: socket write error
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:358)
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.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 javax.imageio.stream.FileCacheImageOutputStream.flushBefore(FileCacheImageOutputStream.java:230)
at javax.imageio.stream.ImageInputStreamImpl.flush(ImageInputStreamImpl.java:811)
at com.sun.imageio.plugins.jpeg.JPEGImageWriter.write(JPEGImageWriter.java:1027)
at org.jfree.chart.encoders.SunJPEGEncoderAdapter.encode(SunJPEGEncoderAdapter.java:173)
at org.jfree.chart.encoders.EncoderUtil.writeBufferedImage(EncoderUtil.java:137)
at org.jfree.chart.ChartUtilities.writeChartAsJPEG(ChartUtilities.java:443)
at org.jfree.chart.ChartUtilities.writeChartAsJPEG(ChartUtilities.java:389)
Caused by: java.net.SocketException: Connection reset by peer: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:741)
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:765)
at org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:126)
at org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:574)
at org.apache.coyote.Response.doWrite(Response.java:560)
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:353)
... 47 more
二.原因分析
在BAIDU找了下原因，大概归结为：
ClientAbortException: java.net.SocketException: Connection reset by peer: socket write error的原因是由于处理http连接时，正在输出内容时，用户关闭了IE，会出现一个"ClientAbortException"，属于I/O处理中出现的一个异常，应用服务器应该会捕捉。
Connection reset by peer的原因：
经常出现的Connection reset by peer: 原因可能是多方面的，不过更常见的原因是：
①：服务器的并发连接数超过了其承载量，服务器会将其中一些连接Down掉；
②：客户关掉了浏览器，而服务器还在给客户端发送数据；
③：浏览器端按了Stop
很多人都说是客户端造成的，没有办法控制，是个比较郁闷的问题。
但是有个哥们说的很好，如果ClientAbortException:是可以不输出这些异常
具体办法
- try {
- //处理代码放在try……catch块中，在catch部分使用判断避免让系统抛出ClientAbortException,
- ChartUtilities.writeChartAsJPEG(response.getOutputStream(), chart, 600, 400);
- } catch (Exception e) {
- String simplename = e.getClass().getSimpleName();
- if("ClientAbortException".equals(simplename)){
- System.out.println("客户端刷新太快了");
- }else
- e.printStackTrace();
- }
- return mapping.findForward("succ");
- }
三.结论
这样做是可以的。