clsid为22D6F312-B0F6-11D0-94AB-0080C74C7E95，FileName属性设置为通过servlet向java后台请求的连接串（http://ip:port/ServletService?actionParames=go），java后台servlet通过ServletOutputStream将视频文件内容写到前台。每次页面调用wmp播放器的时候，servlet总是向后台请求两次，导致后台直接报错：ClientAbortException: java.io.IOException。。。。请问向后台请求两次这个是wmp自己的一个机制还是别的什么原因？？在后台servlet打个断点，第一次请求的断点走通，直接进到第二次请求的断点，如果第二次的断点直接走通，就不会再请求第三次，如果第二次的断点稍等一会儿再走通，还会请求第三次。下面贴上错误代码:
ClientAbortException: java.io.IOException
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:388)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:462)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:366)
at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:413)
at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:401)
at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:91)
at com.service.ServiceServlet.sendMediaStreamByDecrypt(ServiceServlet.java:482)
at com.service.ServiceServlet.sendMediaStream(ServiceServlet.java:191)
at com.service.ServiceServlet.actSendMediaStream(ServiceServlet.java:133)
at com.service.ServiceServlet.process(ServiceServlet.java:83)
at com.service.ServiceServlet.doGet(ServiceServlet.java:57)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:931)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1822)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.io.IOException
at org.apache.coyote.http11.InternalAprOutputBuffer.flushBuffer(InternalAprOutputBuffer.java:205)
at org.apache.coyote.http11.InternalAprOutputBuffer.access$100(InternalAprOutputBuffer.java:37)
at org.apache.coyote.http11.InternalAprOutputBuffer$SocketOutputBuffer.doWrite(InternalAprOutputBuffer.java:235)
at org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:119)
at org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:192)
at org.apache.coyote.Response.doWrite(Response.java:505)
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:383)
... 28 more
