Exception 发送大soap请求时发生异常

Tomcat6上部署了一个web服务，并通过ApacheCXF2.3.3公开。生成的源代码使用wsdl2java存根来调用此服务

在我发出~1Mb的大请求之前，一切似乎都很好。未处理此请求，失败，出现异常：

Interceptor for {http://localhost/}ResourceAllocationServiceSoapService has thrown      
exception, unwinding now org.apache.cxf.binding.soap.SoapFault:
Error reading XMLStreamReader.
...
com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog 
at [row,col {unknown-source}]: [1,0]

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这里是某种最大请求长度，我完全被它卡住了。

我找到了问题所在。实际上，这是拦截器代码中的错误：

CachedOutputStream requestStream = new CachedOutputStream()

当我把这个换成

 CachedOutputStream requestStream = new CachedOutputStream(1000000);

事情开始进展顺利

因此，在复制流的过程中，请求只是集群化了。

成功了。下面的代码将帮助其他人理解将1000000放在哪里

public void handleMessage(SoapMessage message) throws Fault { 
        // Get message content for dirty editing...

    InputStream inputStream = message.getContent(InputStream.class);

    if (inputStream != null)
    {
        String processedSoapEnv = "";
        // Cache InputStream so it can be read independently
        CachedOutputStream cachedInputStream = new CachedOutputStream(1000000);
        try {
            IOUtils.copy(inputStream,cachedInputStream);
            inputStream.close();
            cachedInputStream.close();

            InputStream tmpInputStream = cachedInputStream.getInputStream();
            try{
                String inputBuffer = "";
                int data;
                while((data = tmpInputStream.read()) != -1){
                    byte x = (byte)data;
                    inputBuffer += (char)x;
                }
                /**
                  * At this point you can choose to reformat the SOAP
                  * envelope or simply view it just make sure you put
                  * an InputStream back when you done (see below)
                  * otherwise CXF will complain.
                  */
                processedSoapEnv = fixSoapEnvelope(inputBuffer);
            }
            catch(IOException e){

            }
        }
        catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }


        // Re-set the SOAP InputStream with the new envelope

        message.setContent(InputStream.class,new ByteArrayInputStream( processedSoapEnv.getBytes()));

        /**
         * If you just want to read the InputStream and not
         * modify it then you just need to put it back where
         * it was using the CXF cached inputstream
         *
         * message.setContent(InputStream.class,cachedInputStream.getInputStream());
        */
    }       


} 

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我遇到了geting com.ctc.wstx.exc.WstxEOFException的相同问题：在使用CachedOutputStream类时，prolog中出现了意外的EOF

查看CachedOutputStream类的源，该阈值用于在将流的数据从内存存储到文件之间切换。 假设流对超过阈值的数据进行操作，它将存储在一个文件中，因此下面的代码将被中断

IOUtils.copy(inputStream,cachedInputStream);
inputStream.close();
cachedInputStream.close(); //closes the stream, the file on disk gets deleted
InputStream tmpInputStream = cachedInputStream.getInputStream(); //returned tmpInputStream is brand *empty* one
// ... reading tmpInputStream here will produce WstxEOFException 

增加“阈值”确实有帮助，因为所有流数据都存储在内存中，在这种情况下，调用cachedInputStream.close并不会真正关闭底层流实现，因此以后仍可以从中读取

这是上述代码的“固定”版本，至少它对我来说毫无例外

IOUtils.copy(inputStream,cachedInputStream);
inputStream.close();
InputStream tmpInputStream = cachedInputStream.getInputStream();
cachedInputStream.close();
// reading from tmpInputStream here works fine

---

在tmpInputStream上调用close时，临时文件将被删除，并且不再有其他引用，请参阅CachedOutputStream的源代码。maybeDeleteTempFile

您在何处添加此CachedOutStream requestStream=new CachedOutStream1000000；看，我也面临着同样的问题