一下子打印的日志过多：
    
    
    Caused by: java.io.IOException: Broken pipe
    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:470)
    at org.apache.tomcat.util.net.NioChannel.write(NioChannel.java:138)
    at org.apache.tomcat.util.net.NioBlockingSelector.write(NioBlockingSelector.java:101)
    at org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:152)
    at org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper.doWrite(NioEndpoint.java:1253)
    at org.apache.tomcat.util.net.SocketWrapperBase.doWrite(SocketWrapperBase.java:764)
    at org.apache.tomcat.util.net.SocketWrapperBase.writeBlocking(SocketWrapperBase.java:584)
    at org.apache.tomcat.util.net.SocketWrapperBase.write(SocketWrapperBase.java:528)
    at org.apache.coyote.http11.Http11OutputBuffer$SocketOutputBuffer.doWrite(Http11OutputBuffer.java:546)
    at org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:112)
    at org.apache.coyote.http11.Http11OutputBuffer.doWrite(Http11OutputBuffer.java:193)
    at org.apache.coyote.Response.doWrite(Response.java:601)
    at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:339)
    ... 76 common frames omitted