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Jetty example source code file (DumpHandler.java)
This example Jetty source code file (DumpHandler.java) is included in the DevDaily.com
"Java Source Code
Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.
The Jetty DumpHandler.java source code
//========================================================================
//Copyright 2006 Mort Bay Consulting Pty. Ltd.
//------------------------------------------------------------------------
//Licensed under the Apache License, Version 2.0 (the "License");
//you may not use this file except in compliance with the License.
//You may obtain a copy of the License at
//http://www.apache.org/licenses/LICENSE-2.0
//Unless required by applicable law or agreed to in writing, software
//distributed under the License is distributed on an "AS IS" BASIS,
//WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//See the License for the specific language governing permissions and
//limitations under the License.
//========================================================================
package org.mortbay.jetty;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.Enumeration;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.mortbay.jetty.handler.AbstractHandler;
import org.mortbay.util.StringUtil;
import org.mortbay.util.ajax.Continuation;
import org.mortbay.util.ajax.ContinuationSupport;
/* ------------------------------------------------------------ */
/** Dump request handler.
* Dumps GET and POST requests.
* Useful for testing and debugging.
*
* @version $Id: DumpHandler.java,v 1.14 2005/08/13 00:01:26 gregwilkins Exp $
* @author Greg Wilkins (gregw)
*/
public class DumpHandler extends AbstractHandler
{
String label="Dump HttpHandler";
public DumpHandler()
{
}
public DumpHandler(String label)
{
this.label=label;
}
/* ------------------------------------------------------------ */
/*
* @see org.mortbay.jetty.Handler#handle(java.lang.String, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, int)
*/
public void handle(String target, HttpServletRequest request, HttpServletResponse response, int dispatch) throws IOException, ServletException
{
Request base_request = (request instanceof Request) ? (Request)request:HttpConnection.getCurrentConnection().getRequest();
if (!isStarted())
return;
if (request.getParameter("continue")!=null)
{
Continuation continuation = ContinuationSupport.getContinuation(request, null);
continuation.suspend(Long.parseLong(request.getParameter("continue")));
}
base_request.setHandled(true);
response.setHeader(HttpHeaders.CONTENT_TYPE,MimeTypes.TEXT_HTML);
OutputStream out = response.getOutputStream();
ByteArrayOutputStream buf = new ByteArrayOutputStream(2048);
Writer writer = new OutputStreamWriter(buf,StringUtil.__ISO_8859_1);
writer.write("<html>"+label+"");
writer.write("<pre>\npathInfo="+request.getPathInfo()+"\n\n");
writer.write("<pre>\ncontentType="+request.getContentType()+"\n\n");
writer.write("<pre>\nencoding="+request.getCharacterEncoding()+"\n\n");
writer.write("<h3>Header: ");
writer.write(request.toString());
writer.write("</pre>\nParameters:\n");
Enumeration names=request.getParameterNames();
while(names.hasMoreElements())
{
String name=names.nextElement().toString();
String[] values=request.getParameterValues(name);
if (values==null || values.length==0)
{
writer.write(name);
writer.write("=\n");
}
else if (values.length==1)
{
writer.write(name);
writer.write("=");
writer.write(values[0]);
writer.write("\n");
}
else
{
for (int i=0; i<values.length; i++)
{
writer.write(name);
writer.write("["+i+"]=");
writer.write(values[i]);
writer.write("\n");
}
}
}
String cookie_name=request.getParameter("CookieName");
if (cookie_name!=null && cookie_name.trim().length()>0)
{
String cookie_action=request.getParameter("Button");
try{
Cookie cookie=
new Cookie(cookie_name.trim(),
request.getParameter("CookieVal"));
if ("Clear Cookie".equals(cookie_action))
cookie.setMaxAge(0);
response.addCookie(cookie);
}
catch(IllegalArgumentException e)
{
writer.write("</pre>\nBAD Set-Cookie:\n");
writer.write(e.toString());
}
}
writer.write("</pre>\nCookies:\n");
Cookie[] cookies=request.getCookies();
if (cookies!=null && cookies.length>0)
{
for(int c=0;c<cookies.length;c++)
{
Cookie cookie=cookies[c];
writer.write(cookie.getName());
writer.write("=");
writer.write(cookie.getValue());
writer.write("\n");
}
}
writer.write("</pre>\nAttributes:\n");
Enumeration attributes=request.getAttributeNames();
if (attributes!=null && attributes.hasMoreElements())
{
while(attributes.hasMoreElements())
{
String attr=attributes.nextElement().toString();
writer.write(attr);
writer.write("=");
writer.write(request.getAttribute(attr).toString());
writer.write("\n");
}
}
writer.write("</pre>\nContent:\n");
byte[] content= new byte[4096];
int len;
try{
InputStream in=request.getInputStream();
while((len=in.read(content))>=0)
writer.write(new String(content,0,len));
}
catch(IOException e)
{
writer.write(e.toString());
}
writer.write("</pre>");
writer.write("</html>");
// commit now
writer.flush();
response.setContentLength(buf.size()+1000);
buf.writeTo(out);
buf.reset();
writer.flush();
for (int pad=998-buf.size();pad-->0;)
writer.write(" ");
writer.write("\015\012");
writer.flush();
buf.writeTo(out);
response.setHeader("IgnoreMe","ignored");
}
}
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