最近我们在生产中遇到了一个问题（下面提供了Stacktrace）。需要帮助来解决该问题。 我在SO中经历了许多问题和答案，发现根本原因是：
＆＃34;此错误的常见原因是您已写入 已经被另一端关闭的连接＆＃34;
但是在生产中它从最后2个月开始发生。在那之前没有问题。此外，最近没有代码更改。 需要你帮助找到这个问题的根本原因。
StackTrace：
Caused by: org.apache.catalina.connector.ClientAbortException: java.io.IOException: Connection reset by peer
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:393)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:426)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:339)
at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:418)
at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:406)
at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:97)
... 28 more
Caused by: java.io.IOException:
at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)
at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
at sun.nio.ch.IOUtil.write(IOUtil.java:65)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:492)
at org.apache.tomcat.util.net.NioChannel.write(NioChannel.java:124)
at org.apache.tomcat.util.net.NioBlockingSelector.write(NioBlockingSelector.java:101)
at org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:172)
at org.apache.coyote.http11.InternalNioOutputBuffer.writeToSocket(InternalNioOutputBuffer.java:139)
at org.apache.coyote.http11.InternalNioOutputBuffer.addToBB(InternalNioOutputBuffer.java:197)
at org.apache.coyote.http11.InternalNioOutputBuffer.access$000(InternalNioOutputBuffer.java:41)
at org.apache.coyote.http11.InternalNioOutputBuffer$SocketOutputBuffer.doWrite(InternalNioOutputBuffer.java:320)
代码：
long size = 0;
try {
byte[] buff = new byte[buffSize * 1024];
int len;
while ((len = in.read(buff)) != -1) {
out.write(buff, 0, len);
size += len;
}
} catch (Exception e) {
//
} finally {
in.close()
out.close();
}
从out.write()行抛出异常。
请帮忙