Comments on: Debugging SOAP by logging the incoming HttpRequest

By: netminkey

netminkey — Thu, 20 Dec 2007 21:36:29 +0000

or more simply:

public void init(FilterConfig filterConfig) throws ServletException
{
com.sun.xml.ws.transport.http.HttpAdapter.dump=true;
}

By: netminkey

netminkey — Thu, 20 Dec 2007 18:44:18 +0000

You could also wrap the request in an HttpServletRequestWrapper:

class MyWrapper extends javax.servlet.HttpServletRequestWrapper {
private ServletInputStream wrappedInputStream;
public MyWrapper(HttpServletRequest servletRequest)
{ super(servletRequest); }

public void printInputStream() throws IOException {
InputStream s = getRequest().getInputStream();
byte[] data = null;
try { data = readDataIntoByteArray(s); }
finally { s.close(); }
System.out.println(“Data is: ” + new String(data));

final ByteArrayInputStream bis = new ByteArrayInputStream(data);
wrappedInputStream = new ServletInputStream() {
@Override
public int read() throws IOException
{ return bis.read(); }};
}
@Override
public ServletInputStream getInputStream() throws IOException {
if (wrappedInputStream == null)
return getRequest().getInputStream();
else
return wrappedInputStream;
}
}

and use it like this:
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
MyWrapper httpRequest = new MyWrapper((HttpServletRequest)request);
httpRequest.printInputStream();
chain.doFilter(httpRequest, response);
}

Even better, you can add an init param to your filter to choose whether to turn debugging on (for dev mode) or off (for production mode)

By: Zouq

Zouq — Sat, 01 Dec 2007 09:01:57 +0000

Any idea how to log outgoing Response??? Any help would be appreciated.

By: Tom Hunt

Tom Hunt — Sun, 25 Nov 2007 19:21:58 +0000

Pascal,
Thank you! I have been trying to implement the same solution for logging multipart-form data posts. I tried wrapping the request, but I hadn’t taken it to the point of overriding the inputstream and its read functions. This works like a charm.

By: mat

mat — Thu, 22 Nov 2007 08:41:26 +0000

The sample kind of works but for some reason the logged SOAP request gets truncated towards the end. I could not detect the reason. Pretty odd. Any idea why that would be ?
Thank you anyway.

By: jim

jim — Wed, 31 Oct 2007 17:45:00 +0000

Thank you Pascal. This is exactly what I was looking for as I was at dead end wondering why the SOAP servcie was blowing up just because I logged the inputstream. Your idea is great and I appreciate you posting your solution. I was in the exact same situation. It tried as the other comment suggests about using .reset() and it didn’t work for me either, but your solution did work great. Thanks again!

By: Pascal Alma

Pascal Alma — Tue, 18 Sep 2007 04:48:18 +0000

Just got some time to test the filter with the reset() statement. Unfortunatly it doesn’t work. I’m getting the following stacktrace:
java.io.IOException: mark/reset not supported
java.io.InputStream.reset(InputStream.java:331)
net.pascalalma.filter.LogRequestFilter.doFilter(LogRequestFilter.java:51)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

So maybe my solution wasn’t that bad??

By: Pascal Alma

Pascal Alma — Thu, 30 Aug 2007 03:57:34 +0000

LOL!
I don’t have time right now to check this but if it is true then that would be a much easier solution!
So if this blog isn’t helpful to you, at least I am learning of it :-)

By: Mykola Dzyuba

Mykola Dzyuba — Wed, 29 Aug 2007 21:46:26 +0000

In response to this comment: “When you try this implementation of the filter you will definitely receive errors in your web service! This is caused by the fact that the inputstream is already processed in the filter so you can not process it again in your web service/servlet”

I think it would be easier to simply call in.reset() as it is done in my function below.

private void writeInputStream(HttpServletRequest request, BufferedWriter out) throws IOException {
out.write(“** START INPUTSTREAM **\n”);
ServletInputStream in = request.getInputStream();
if (in.markSupported()) {
in.mark(MAX_BYTES);
}
int i = 0;
while ((i = in.read()) != -1) {
out.write(i);
}
out.write(“\n** END OF INPUTSTREAM **\n”);
in.reset();
}