查看日志:里面有很多broken pipe的错误,如下: StandardWrapperValve[default]: Servlet.service() for servlet default threw exception java.io.IOException: Broken pipe at java.net.SocketOutputStream.socketWrite(Native Method) at java.net.SocketOutputStream.write(SocketOutputStream.java:91) at org.apache.jk.common.ChannelSocket.send(ChannelSocket.java:407) at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:599) at org.apache.jk.server.JkCoyoteHandler.doWrite(JkCoyoteHandler.java:216) at org.apache.coyote.Response.doWrite(Response.java:524) at org.apache.coyote.tomcat4.OutputBuffer.realWriteBytes(OutputBuffer.java:384) at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:439) at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:359) at org.apache.coyote.tomcat4.OutputBuffer.writeBytes(OutputBuffer.java:411) at org.apache.coyote.tomcat4.OutputBuffer.write(OutputBuffer.java:398) at org.apache.coyote.tomcat4.CoyoteOutputStream.write(CoyoteOutputStream.java:110) at org.apache.catalina.servlets.DefaultServlet.copyRange(DefaultServlet.java:1996) at org.apache.catalina.servlets.DefaultServlet.copy(DefaultServlet.java:1745) at org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:1073) at org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:506) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)