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"); pout.write("</tr>\n"); pout.write("<th align=\"right\">getContentLength: "); pout.write("<td>"+Integer.toString(request.getContentLength())+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getContentType: "); pout.write("<td>"+notag(request.getContentType())+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getRequestURI: "); pout.write("<td>"+notag(request.getRequestURI())+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getRequestURL: "); pout.write("<td>"+notag(request.getRequestURL().toString())+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getContextPath: "); pout.write("<td>"+request.getContextPath()+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getServletPath: "); pout.write("<td>"+notag(request.getServletPath())+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getPathInfo: "); pout.write("<td>"+notag(request.getPathInfo())+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getPathTranslated: "); pout.write("<td>"+notag(request.getPathTranslated())+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getQueryString: "); pout.write("<td>"+notag(request.getQueryString())+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getProtocol: "); pout.write("<td>"+request.getProtocol()+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getScheme: "); pout.write("<td>"+request.getScheme()+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getServerName: "); pout.write("<td>"+notag(request.getServerName())+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getServerPort: "); pout.write("<td>"+Integer.toString(request.getServerPort())+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getLocalName: "); pout.write("<td>"+request.getLocalName()+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getLocalAddr: "); pout.write("<td>"+request.getLocalAddr()+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getLocalPort: "); pout.write("<td>"+Integer.toString(request.getLocalPort())+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getRemoteUser: "); pout.write("<td>"+request.getRemoteUser()+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getRemoteAddr: "); pout.write("<td>"+request.getRemoteAddr()+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getRemoteHost: "); pout.write("<td>"+request.getRemoteHost()+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getRemotePort: "); pout.write("<td>"+request.getRemotePort()+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getRequestedSessionId: "); pout.write("<td>"+request.getRequestedSessionId()+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">isSecure(): "); pout.write("<td>"+request.isSecure()+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">isUserInRole(admin): "); pout.write("<td>"+request.isUserInRole("admin")+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getLocale: "); pout.write("<td>"+request.getLocale()+""); Enumeration locales= request.getLocales(); while (locales.hasMoreElements()) { pout.write("</tr>\n"); pout.write("<th align=\"right\">getLocales: "); pout.write("<td>"+locales.nextElement()+""); } pout.write("</tr>\n"); pout.write("<th align=\"left\" colspan=\"2\">
Other HTTP Headers:
"); Enumeration h= request.getHeaderNames(); String name; while (h.hasMoreElements()) { name= (String)h.nextElement(); Enumeration h2= request.getHeaders(name); while (h2.hasMoreElements()) { String hv= (String)h2.nextElement(); pout.write("</tr>\n"); pout.write("<th align=\"right\">"+notag(name)+": "); pout.write("<td>"+notag(hv)+""); } } pout.write("</tr>\n"); pout.write("<th align=\"left\" colspan=\"2\">
Request Parameters:
"); h= request.getParameterNames(); while (h.hasMoreElements()) { name= (String)h.nextElement(); pout.write("</tr>\n"); pout.write("<th align=\"right\">"+notag(name)+": "); pout.write("<td>"+notag(request.getParameter(name))+""); String[] values= request.getParameterValues(name); if (values == null) { pout.write("</tr>\n"); pout.write("<th align=\"right\">"+notag(name)+" Values: "); pout.write("<td>"+"NULL!"+""); } else if (values.length > 1) { for (int i= 0; i < values.length; i++) { pout.write("</tr>\n"); pout.write("<th align=\"right\">"+notag(name)+"["+i+"]: "); pout.write("<td>"+notag(values[i])+""); } } } pout.write("</tr>\n"); pout.write("<th align=\"left\" colspan=\"2\">
Cookies:
"); Cookie[] cookies = request.getCookies(); for (int i=0; cookies!=null && i<cookies.length;i++) { Cookie cookie = cookies[i]; pout.write("</tr>\n"); pout.write("<th align=\"right\">"+notag(cookie.getName())+": "); pout.write("<td>"+notag(cookie.getValue())+""); } String content_type=request.getContentType(); if (content_type!=null && !content_type.startsWith("application/x-www-form-urlencoded") && !content_type.startsWith("multipart/form-data")) { pout.write("</tr>\n"); pout.write("<th align=\"left\" valign=\"top\" colspan=\"2\">
Content:
"); pout.write("</tr>\n"); pout.write("<td>
");
                char[] content= new char[4096];
                int len;
                try{
                    Reader in=request.getReader();
                    
                    while((len=in.read(content))>=0)
                        pout.write(notag(new String(content,0,len)));
                }
                catch(IOException e)
                {
                    pout.write(e.toString());
                }
                
                pout.write("</pre>");
            }
            
            
            pout.write("</tr>
\n"); pout.write("<th align=\"left\" colspan=\"2\">
Request Attributes:
"); Enumeration a= request.getAttributeNames(); while (a.hasMoreElements()) { name= (String)a.nextElement(); pout.write("</tr>\n"); pout.write("<th align=\"right\" valign=\"top\">"+name+": "); pout.write("<td>"+"
" + toString(request.getAttribute(name)) + "
"+""); } pout.write("</tr>\n"); pout.write("<th align=\"left\" colspan=\"2\">
Servlet InitParameters:
"); a= getInitParameterNames(); while (a.hasMoreElements()) { name= (String)a.nextElement(); pout.write("</tr>\n"); pout.write("<th align=\"right\">"+name+": "); pout.write("<td>"+ toString(getInitParameter(name)) +""); } pout.write("</tr>\n"); pout.write("<th align=\"left\" colspan=\"2\">
Context InitParameters:
"); a= getServletContext().getInitParameterNames(); while (a.hasMoreElements()) { name= (String)a.nextElement(); pout.write("</tr>\n"); pout.write("<th align=\"right\">"+name+": "); pout.write("<td>"+ toString(getServletContext().getInitParameter(name)) + ""); } pout.write("</tr>\n"); pout.write("<th align=\"left\" colspan=\"2\">
Context Attributes:
"); a= getServletContext().getAttributeNames(); while (a.hasMoreElements()) { name= (String)a.nextElement(); pout.write("</tr>\n"); pout.write("<th align=\"right\" valign=\"top\">"+name+": "); pout.write("<td>"+"
" + toString(getServletContext().getAttribute(name)) + "
"+""); } String res= request.getParameter("resource"); if (res != null && res.length() > 0) { pout.write("</tr>\n"); pout.write("<th align=\"left\" colspan=\"2\">
Get Resource: \""+res+"\"
"); pout.write("</tr>\n"); pout.write("<th align=\"right\">this.getClass().getResource(...): "); pout.write("<td>"+this.getClass().getResource(res)+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">this.getClass().getClassLoader().getResource(...): "); pout.write("<td>"+this.getClass().getClassLoader().getResource(res)+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">Thread.currentThread().getContextClassLoader().getResource(...): "); pout.write("<td>"+Thread.currentThread().getContextClassLoader().getResource(res)+""); pout.write("</tr>\n"); pout.write("<th align=\"right\">getServletContext().getResource(...): "); try{pout.write("<td>"+getServletContext().getResource(res)+"");} catch(Exception e) {pout.write("<td>"+"" +e+"");} } pout.write("</tr>

Jetty example source code file (Dump.java)

This example Jetty source code file (Dump.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.

Java - Jetty tags/keywords

be, cookie, exception, http, io, not, post, reflection, request, response, seen, seen, servlet, servletexception, servletexception, string, string, textfield, this, this

The Jetty Dump.java source code

// ========================================================================
// Copyright 1996-2005 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 com.acme;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.Reader;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.util.Enumeration;
import java.util.Locale;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletRequestWrapper;
import javax.servlet.UnavailableException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;

import org.mortbay.util.StringUtil;
import org.mortbay.util.ajax.Continuation;
import org.mortbay.util.ajax.ContinuationSupport;



/* ------------------------------------------------------------ */
/** Dump Servlet Request.
 * 
 */
public class Dump extends HttpServlet
{
    /* ------------------------------------------------------------ */
    public void init(ServletConfig config) throws ServletException
    {
    	super.init(config);
    }

    /* ------------------------------------------------------------ */
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
    {
        doGet(request, response);
    }

    /* ------------------------------------------------------------ */
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
    {
        if(request.getPathInfo().toLowerCase().indexOf("script")!=-1)
        {
            response.sendRedirect(getServletContext().getContextPath() + "/dump/info");
            return;
        }
            
        request.setCharacterEncoding("UTF-8");
        
        if (request.getParameter("empty")!=null)
        {
            response.setStatus(200);
            response.flushBuffer();
            return;
        }
        
        if (request.getParameter("sleep")!=null)
        {
            try
            {
                long s = Long.parseLong(request.getParameter("sleep"));
                Thread.sleep(s/2);
                response.sendError(102);
                Thread.sleep(s/2);
            }
            catch (InterruptedException e)
            {
                return;
            }
            catch (Exception e)
            {
                throw new ServletException(e);
            }
        }
        
        if (request.getParameter("continue")!=null)
        {
            Continuation continuation = ContinuationSupport.getContinuation(request, null);
            continuation.suspend(Long.parseLong(request.getParameter("continue")));
        }
            
        request.setAttribute("Dump", this);
        getServletContext().setAttribute("Dump",this);
        // getServletContext().log("dump "+request.getRequestURI());

        // Force a content length response
        String length= request.getParameter("length");
        if (length != null && length.length() > 0)
        {
            response.setContentLength(Integer.parseInt(length));
        }

        // Handle a dump of data
        String data= request.getParameter("data");
        String block= request.getParameter("block");
        String dribble= request.getParameter("dribble");
        if (data != null && data.length() > 0)
        {
            int d=Integer.parseInt(data);
            int b=(block!=null&&block.length()>0)?Integer.parseInt(block):50;
            byte[] buf=new byte[b];
            for (int i=0;i<b;i++)
            {
                
                buf[i]=(byte)('0'+(i%10));
                if (i%10==9)
                    buf[i]=(byte)'\n';
            }
            buf[0]='o';
            OutputStream out=response.getOutputStream();
            response.setContentType("text/plain");
            while (d > 0)
            {
                if (b==1)
                {
                    out.write(d%80==0?'\n':'.');
                    d--;
                }
                else if (d>=b)
                {
                    out.write(buf);
                    d=d-b;
                }
                else
                {
                    out.write(buf,0,d);
                    d=0;
                }
                
                if (dribble!=null)
                {
                    out.flush();
                    try
                    {
                        Thread.sleep(Long.parseLong(dribble));
                    }
                    catch (Exception e)
                    {
                        e.printStackTrace();
                        break;
                    }
                }
                
            }
            
            return;
        }
        
        
        // handle an exception
        String info= request.getPathInfo();
        if (info != null && info.endsWith("Exception"))
        {
            try
            {
                throw (Throwable) Thread.currentThread().getContextClassLoader().loadClass(info.substring(1)).newInstance();
            }
            catch (Throwable th)
            {
                throw new ServletException(th);
            }
        }

        // test a reset
        String reset= request.getParameter("reset");
        if (reset != null && reset.length() > 0)
        {
            response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
            response.setHeader("SHOULD_NOT","BE SEEN");
            response.reset();
        }
        
        
        // handle an redirect
        String redirect= request.getParameter("redirect");
        if (redirect != null && redirect.length() > 0)
        {
            response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
            response.sendRedirect(redirect);
            try
            {
                response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
            }
            catch(IOException e)
            {
                // ignored as stream is closed.
            }
            return;
        }

        // handle an error
        String error= request.getParameter("error");
        if (error != null && error.length() > 0 && request.getAttribute("javax.servlet.error.status_code")==null)
        {
            response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
            response.sendError(Integer.parseInt(error));
            try
            {
                response.getOutputStream().println("THIS SHOULD NOT BE SEEN!");
            }
            catch(IllegalStateException e)
            {
                try
                {
                    response.getWriter().println("NOR THIS!!"); 
                }
                catch(IOException e2){}
            }
            catch(IOException e){}
            return;
        }


        String buffer= request.getParameter("buffer");
        if (buffer != null && buffer.length() > 0)
            response.setBufferSize(Integer.parseInt(buffer));

        String charset= request.getParameter("charset");
        if (charset==null)
            charset="UTF-8";
        response.setCharacterEncoding(charset);
        response.setContentType("text/html");

        if (info != null && info.indexOf("Locale/") >= 0)
        {
            try
            {
                String locale_name= info.substring(info.indexOf("Locale/") + 7);
                Field f= java.util.Locale.class.getField(locale_name);
                response.setLocale((Locale)f.get(null));
            }
            catch (Exception e)
            {
                e.printStackTrace();
                response.setLocale(Locale.getDefault());
            }
        }

        String cn= request.getParameter("cookie");
        String cv=request.getParameter("cookiev");
        if (cn!=null && cv!=null)
        {
            Cookie cookie= new Cookie(cn, cv);
            if (request.getParameter("version")!=null)
                cookie.setVersion(Integer.parseInt(request.getParameter("version")));
            cookie.setComment("Cookie from dump servlet");
            response.addCookie(cookie);
        }

        String pi= request.getPathInfo();
        if (pi != null && pi.startsWith("/ex"))
        {
            OutputStream out= response.getOutputStream();
            out.write("</H1>This text should be reset".getBytes());
            if ("/ex0".equals(pi))
                throw new ServletException("test ex0", new Throwable());
            else if ("/ex1".equals(pi))
                throw new IOException("test ex1");
            else if ("/ex2".equals(pi))
                throw new UnavailableException("test ex2");
            else if (pi.startsWith("/ex3/"))
                throw new UnavailableException("test ex3",Integer.parseInt(pi.substring(5)));
            throw new RuntimeException("test");
        }

        if ("true".equals(request.getParameter("close")))
            response.setHeader("Connection","close");

        String buffered= request.getParameter("buffered");
        
        PrintWriter pout=null;
        
        try
        {
            pout =response.getWriter();
        }
        catch(IllegalStateException e)
        {
            pout=new PrintWriter(new OutputStreamWriter(response.getOutputStream(),charset));
        }
        if (buffered!=null)
            pout = new PrintWriter(new BufferedWriter(pout,Integer.parseInt(buffered)));
        
        try
        {
            pout.write("<html>\n\n");
            pout.write("<h1>Dump Servlet\n");
            pout.write("<table width=\"95%\">");
            pout.write("<tr>\n");
            pout.write("<th align=\"right\">getMethod: ");
            pout.write("<td>" + notag(request.getMethod())+"
\n"); /* ------------------------------------------------------------ */ pout.write("<h2>Request Wrappers\n"); ServletRequest rw=request; int w=0; while (rw !=null) { pout.write((w++)+": "+rw.getClass().getName()+"<br/>"); if (rw instanceof HttpServletRequestWrapper) rw=((HttpServletRequestWrapper)rw).getRequest(); else if (rw instanceof ServletRequestWrapper) rw=((ServletRequestWrapper)rw).getRequest(); else rw=null; } pout.write("<br/>"); pout.write("<h2>International Characters (UTF-8)"); pout.write("LATIN LETTER SMALL CAPITAL AE<br/>\n"); pout.write("Directly uni encoded(\\u1d01): \u1d01<br/>"); pout.write("HTML reference (&AElig;): Æ<br/>"); pout.write("Decimal (&#7425;): ᴁ<br/>"); pout.write("Javascript unicode (\\u1d01) : <script language='javascript'>document.write(\"\u1d01\");
"); pout.write("<br/>"); pout.write("<h2>Form to generate GET content"); pout.write("<form method=\"GET\" action=\""+response.encodeURL(getURI(request))+"\">"); pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"value\"/>
\n"); pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\">"); pout.write("</form>"); pout.write("<br/>"); pout.write("<h2>Form to generate POST content"); pout.write("<form method=\"POST\" accept-charset=\"utf-8\" action=\""+response.encodeURL(getURI(request))+"\">"); pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"value\"/>
\n"); pout.write("Select: <select multiple name=\"Select\">\n"); pout.write("<option>ValueA"); pout.write("<option>ValueB1,ValueB2"); pout.write("<option>ValueC"); pout.write("</select>
"); pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\">
"); pout.write("</form>"); pout.write("<br/>"); pout.write("<h2>Form to generate UPLOAD content"); pout.write("<form method=\"POST\" enctype=\"multipart/form-data\" accept-charset=\"utf-8\" action=\""+response.encodeURL(getURI(request))+"\">"); pout.write("TextField: <input type=\"text\" name=\"TextField\" value=\"comment\"/>
\n"); pout.write("File 1: <input type=\"file\" name=\"file1\" />
\n"); pout.write("File 2: <input type=\"file\" name=\"file2\" />
\n"); pout.write("<input type=\"submit\" name=\"Action\" value=\"Submit\">
"); pout.write("</form>"); pout.write("<h2>Form to set Cookie"); pout.write("<form method=\"POST\" action=\""+response.encodeURL(getURI(request))+"\">"); pout.write("cookie: <input type=\"text\" name=\"cookie\" />
\n"); pout.write("value: <input type=\"text\" name=\"cookiev\" />
\n"); pout.write("<input type=\"submit\" name=\"Action\" value=\"setCookie\">"); pout.write("</form>\n"); pout.write("<h2>Form to get Resource"); pout.write("<form method=\"POST\" action=\""+response.encodeURL(getURI(request))+"\">"); pout.write("resource: <input type=\"text\" name=\"resource\" />
\n"); pout.write("<input type=\"submit\" name=\"Action\" value=\"getResource\">"); pout.write("</form>\n"); } catch (Exception e) { getServletContext().log("dump", e); } if (request.getParameter("stream")!=null) { pout.flush(); Continuation continuation = ContinuationSupport.getContinuation(request, null); continuation.suspend(Long.parseLong(request.getParameter("stream"))); } String lines= request.getParameter("lines"); if (lines!=null) { char[] line = "<span>A line of characters. Blah blah blah blah. blooble blooble
\n".toCharArray(); for (int l=Integer.parseInt(lines);l-->0;) { pout.write("<span>"+l+" "); pout.write(line); } } pout.write("</body>\n\n"); pout.close(); if (pi != null) { if ("/ex4".equals(pi)) throw new ServletException("test ex4", new Throwable()); if ("/ex5".equals(pi)) throw new IOException("test ex5"); if ("/ex6".equals(pi)) throw new UnavailableException("test ex6"); } } /* ------------------------------------------------------------ */ public String getServletInfo() { return "Dump Servlet"; } /* ------------------------------------------------------------ */ public synchronized void destroy() { } /* ------------------------------------------------------------ */ private String getURI(HttpServletRequest request) { String uri= (String)request.getAttribute("javax.servlet.forward.request_uri"); if (uri == null) uri= request.getRequestURI(); return uri; } /* ------------------------------------------------------------ */ private static String toString(Object o) { if (o == null) return null; try { if (o.getClass().isArray()) { StringBuffer sb = new StringBuffer(); if (!o.getClass().getComponentType().isPrimitive()) { Object[] array= (Object[])o; for (int i= 0; i < array.length; i++) { if (i > 0) sb.append("\n"); sb.append(array.getClass().getComponentType().getName()); sb.append("["); sb.append(i); sb.append("]="); sb.append(toString(array[i])); } return sb.toString(); } else { int length = Array.getLength(o); for (int i=0;i<length;i++) { if (i > 0) sb.append("\n"); sb.append(o.getClass().getComponentType().getName()); sb.append("["); sb.append(i); sb.append("]="); sb.append(toString(Array.get(o, i))); } return sb.toString(); } } else return o.toString(); } catch (Exception e) { return e.toString(); } } private String notag(String s) { if (s==null) return "null"; s=StringUtil.replace(s,"&","&"); s=StringUtil.replace(s,"<","<"); s=StringUtil.replace(s,">",">"); return s; } }

Other Jetty examples (source code examples)

Here is a short list of links related to this Jetty Dump.java source code file:

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