Corrupted java.io.stream.CorruptedException in servlet

I am getting
Corrupted java.io.stream.CorruptedException in servlet
while reading data from JApplet.
The error description is
Caught EOF Exeption while reading the streamheader.
Kindly let me know if anybody has got a solution to this.
regards

are you passing serialized objects through the i/o stream? If you're code is sending serialized objects they may be reconstructed incorrectly by the recipiant. When reading the input stream, its likely your JAplet is misinterpreting the object it recieves, resulting in a 'corrupted' exception. If this is the case, make sure your JAplet is constructing the correct type of object from its input.
not much help really, but better than nothing I guess.
rob

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Java.lang.NullPointerException in a servlet

I'm having a problem, and need help as quick as I can get it.
I'm coding a program that takes input from an HTML file, gives it to a servlet, which processes the information and spits it back out to the web browser in HTML.
I'm using NetBeans 3.6 with Java 1.5.0.
The error that TomCat is giving me is:
java.lang.NullPointerException
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Any Suggestions?
My servlet code:
package edu.usf;
import java.net.*;
import java.lang.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
public class CCC extends HttpServlet {
float drive_cost = 0.00f;
float engine_cost = 0.00f;
float sunroof_cost = 0.00f;
float brakes_cost = 0.00f;
float interior_cost = 0.00f;
float style_cost = 0.00f;
float roofrack_cost = 0.00f;
String name,style,engine,drive,brakes,interior,sunroof,roofrack,basecost,totalcost;
String namevar,stylevar,enginevar,drivevar,brakesvar,interiorvar,sunroofvar,roofrackvar,basecostvar,totalcostvar;
String namastr,stylestr,enginestr,drivestr,brakesstr,interiorstr,sunroofstr,roofrackstr,basecoststr,totalcoststr;
String name_field,style_option,engine_option,brakes_option,drive_option,interior_option;
float base_cost = 15000.00f;
float total_cost = base_cost;
//static final String CONTENT_TYPE = "text/html";
public void init() throws ServletException {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType( "text/html" );
PrintWriter out = response.getWriter();
namevar = request.getParameter(name);
stylevar = request.getParameter(style);
enginevar = request.getParameter(engine);
drivevar = request.getParameter(drive);
brakesvar = request.getParameter(brakes);
interiorvar = request.getParameter(interior);
sunroofvar = request.getParameter(sunroof);
roofrackvar = request.getParameter(roofrack);
//Time to do some work
//Check to see what style of car was selected.
{ if ( stylevar.equals("hatch") )
      {style_option = "Hatchback";
      style_cost = 0.00f;}
     if ( stylevar.equals("sedan") )
      {style_option = "Sedan";
      style_cost = 800.00f;}
     if ( stylevar.equals("wagon") )
      {style_option = "Wagon";
      style_cost = 1400.00f;}
//Drivetrain calculation time
    { if ( drivevar.equals("2") )
      {drive_option = "2-Wheel Drive";
       drive_cost = 0.00f;}
      else if (drivevar.equals("4") )
       drive_option = "4-Wheel Drive";
       drive_cost = 7000.00f;}
   //Engine calculation time
    { if ( enginevar.equals("4"))
      {engine_option = "4-Cylinder";
       engine_cost = 0.00f;}
      else if ( enginevar.equals("6"))
      {engine_option = "6-Cylinder";
       engine_cost = 2200.00f;}
   //Brake calculation time
    { if ( brakesvar.equals("s") )
       {brakes_option = "Standard";
        brakes_cost = 0.00f;}
      else if ( brakesvar.equals("a") )
        {brakes_option = "Anti-Lock";
         brakes_cost = 900.00f;}
   //Sunroof calculation time
    { if ( sunroofvar.equals("1") )
        sunroof_cost = 800.00f;
   //Interior calculation time
    { if ( interiorvar.equals("deluxe"))
      {interior_option = "Deluxe";
      interior_cost = 0.00f;}
    { if ( interiorvar.equals("luxury") )
      {interior_option = "Luxury";
      interior_cost = 800.00f;}
    { if ( interiorvar.equals("executive") )
      {interior_option = "Executive";
      interior_cost = 1400.00f;}
   //Roofrack calculation time
    { if ( roofrackvar.equals("1") )
        roofrack_cost = 200.00f;
   //Total cost calculation time
      total_cost = style_cost + drive_cost + engine_cost + brakes_cost +
                sunroof_cost + interior_cost + roofrack_cost;
//OUTPUT HTML SECTION
    //Print up HTML Header section
    out.println("<html>");
    out.println("<head><title>Tri-C: Results</title></head>");
    out.println("<body bgcolor=\"#FFFFFF\">");
    out.println("<center>");
    out.println("<p>Tri-C: ResultsCar Calculation</p>");
    out.println("<table border=1>");
    out.println("<tr><td> </td><td>Option</td><td>Cost</td></tr>");
    //Print up name
    namastr = ("<tr><td>Name:</td><td>" + name + "</td></tr>");
    out.println(namastr);
    out.println("<tr><td> </td><td> </td><td> </td></tr>");
    //Print up Base Cost
    basecoststr = ("<tr><td>Base Cost:</td><td> </td><td>$" + base_cost + "</td></tr>");
    out.println(basecoststr);
    //Print up Style selection
    stylestr = ("<tr><td>Style:</td><td>" + style_option + "</td><td>$" + style_cost + "</td></tr>");
    out.println(stylestr);
    //Print up Engine selection
    enginestr = ("<tr><td>Engine:</td><td>" + engine_option + "</td><td>$" + engine_cost + "</td></tr>");
    out.println(enginestr);
    //Print up Drivetrain selection
    drivestr = ("<tr><td>Drivetrain:</td><td>" + drive_option + "</td><td>$" + drive_cost + "</td></tr>");
    out.println(drivestr);
    //Print up Brakes selection
    brakesstr = ("<tr><td>Brakes:</td><td>" + brakes_option + "</td><td>$" + brakes_cost + "</td></tr>");
    out.println(brakesstr);
    //Print up Sunroof Selection
    sunroofstr = ("<tr><td>Sunroof:</td><td> </td><td>$" + sunroof_cost + "</td></tr>");
    out.println(sunroofstr);
    //Print up Interior Selection
    interiorstr = ("<tr><td>Interior:</td><td>" + interior_option + "</td><td>$" + interior_cost + "</td></tr>");
    out.println(interiorstr);
    //Print up Roofrack Selection
    roofrackstr = ("<tr><td>Roofrack:</td><td> </td><td>$" + roofrack_cost + "</td></tr>");
    out.println(roofrackstr);
    //Print up Total Cost section
    out.println("<tr><td> </td></tr>");
    totalcoststr = ("<tr><td>Total Cost:</td><td> </td><td>$" + total_cost + "</td></tr>");
    out.println(totalcoststr);
    //Print up HTML Footer section
    out.println("</table>");
    out.println("</body>");
    out.println("</html>");
And here is the HTML file that calls it:
<html>
<head>
<title>Tri-C: Car Cost Calculator</title>
</head>
<body background="#000000">
<form action="CCC" method="post">
<center>
<table border=1>
<tr><td>Enter your name:</td><td><input type="text" name="name" /></td></tr>
<tr><td> </td><td> </td></tr>
<tr><td>Style:</td><td><SELECT name="style">
<OPTION SELECTED value="hatch">Hatchback</OPTION>
<OPTION value="sedan">Sedan (+$800.00)</OPTION>
<OPTION value="wagon">Wagon (+$1400.00)</OPTION>
</SELECT></td></tr>
<tr><td>Drivetrain:</td><td>
<input type="radio" name="drive" value="2">2-Wheel Drive</input><br>
<input type="radio" name="drive" value="4">4-Wheel Drive (+$7000.00)</input>
</td></tr>
<tr><td>Engine:</td><td>
<input type="radio" name="engine" value="4">4-Cylinder</input><br>
<input type="radio" name="engine" value="6">6-Cylinder (+$2200.00)</input>
</td></tr>
<tr><td>Brakes:</td><td>
<input type="radio" name="brakes" value="0">Standard</input><br>
<input type="radio" name="brakes" value="1">Anti-Lock (+$900.00)</input>
</td></tr>
<tr><td>Sunroof:</td><td>
<input type="checkbox" name="sunroof" value="1">Add Option (+$800.00)</input>
</td></tr>
<tr><td>Interior:</td><td><SELECT name="interior">
<OPTION SELECTED value="deluxe">Deluxe</OPTION>
<OPTION value="luxury">Luxury (+$800.00)</OPTION>
<OPTION value="executive">Executive (+$1400.00)</OPTION>
</SELECT></td></tr>
<tr><td>RoofRack:</td><td>
<input type="checkbox" name="roofrack" value="1">Add Option (+$200.00)</input>
</td></tr>
<tr><td></td><td><input type="SUBMIT" value="Process">    <input type="reset" name="Clear Form"></td></tr>
</form>
</body>
</html>

It's because name is null. You declared it but didn't initialize it, so it's null. What did you expect to happen there?
By the way, declaring instance variables in a servlet class is a bad practice. If you get two requests at the same time, they both share the same instance of the servlet so they are both accessing and updating the same variables. Make them local variables in your doPost() method and you should not have that problem.

Java socket streams messing up

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what im asking is can this happen in java sockets ? i thought they were bufferered so no matter how fast you send data it would always read it out in the same order ?? not sure how its merging these to packets
is this possible of is my reader got an error in it altho works 95% of the time ??

or do you have multiple buffered streams created from the same socket?

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          "KC" <[email protected]> wrote:
          >
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          >"mreiche" <[email protected]> wrote:
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          >>Mike
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          >>
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Nevermind folks - I got it to work. All my configuration was correct; I had other issues with the ejb-jar file that the verifier informed me of (my previous deployments were with the verifier turned-off).

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Hi!
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     Subject: Re: JB7+WL7 :Fail to run EJB and JSP in the same project
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http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&selm=3d8b5b77%241%40newsgroups.borland.com
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I have been trying to make jBuilder7 Enterprise and WebLogic 7 Enterprise work
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     failed with ServletException javax.servlet.UnavailableException: ServletContext(id=824316,name=JBuilder_DefaultWebApp,context-path=):
     The server myserver is temporarily suspended
     java.io.FileNotFoundException: no resource '/servlet/borland.demo.web.TestServlet'
Apparently WebLogic can not find the generated Servelet. Remember: all I am trying
to do is run a Servlet generated by the JBuilder wizard. Nothing else!
In my attempt to resolve the problem I tried moving the java file within the same
directory as the .shtml file. I also changed the Servlet section of the
.shtml from:
     <servlet
     codebase=""
     code="borland.demo.web.TestServlet.class"
     >
to
     <servlet
     codebase=""
     code="TestServlet.class"
     >
I still get an error but the error message has changed. Unfortunatelly the exception
message does not provide much insight into the cause of the problem. All
I know is that I get an servlet.UnavailableException:
     <[ServletContext(id=4211180,name=JBuilder_DefaultWebApp,context-path=)] Servlet
failed with ServletExceptionjavax.servlet.UnavailableException:
     ServletContext(id=4211180,name=JBuilder_DefaultWebApp,context-path=): The server
myserver is temporarily suspended     at
     weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3077)
at
     weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2544)
at
     weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:153)     at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:134)>
Could someone please help me solve this? What should I look for? How do I go about
resolving this?
I thank you in advance for your time.
Olga.

Looking for some help on Java IO Streams

Need to find a example or how to on:
Java IO Streams
using a scanner to find files with
FileInputSeteam ...("c:\\data.in")
did that make sense
sandyR

What about the API page for Scanner: http://java.sun.com/javase/6/docs/api/java/util/Scanner.html
And the IO tutorial: http://java.sun.com/docs/books/tutorial/essential/io/index.html (which also discusses Scanner).

How to parse a XML stream sent to servlet with PUT method

Hi,
I have to interface my servlet app with other apps communicating with XML.
This way, My servlet will receive a XML stream in the http request, parse it and send back a XML message.
What I've done is :
An html page to send a XML File with a put method :
<form enctype="multipart/form-data" method="PUT" action="http://localhost:8080/MyApp/servlet/TestUploadServlet">
     <input type="file" size="20" name="FileToUpload" value="Select File">
     <input type="submit" name="UploadFile" value="Upload">
     <input type="reset" value="Reset">
</form>
A servlet TestUploadServlet with :
SAXParser parser = new SAXParser( );
Trace.traceLine( "SAXParser" );
parser.setContentHandler (this);
try {
parser.parse( new InputSource( requete.getInputStream() ) );
catch (SAXException e) {
Trace.traceLine( e.getMessage() );
catch (IOException e) {
Trace.traceLine( e.getMessage() );
and the methods startElement, stopElement and other to work with the elements detected by the parser (already used by other programs parsing local xml files).
And it doesn't work.
is the html code is a good way to send a file in the http Put method ?
is the parser.parse( new InputSource( requete.getInputStream() ) ); a good method to read the stream ?
please help.

I think the problemn comes from the method used to send the <XML> stream.
Using an html form doesn't seem to be a good method.
I tried several methods or examples found and none of them seems to work.
here is another example in the servlet side :
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException
ServletOutputStream output = res.getOutputStream();
output.println("ContentType: " + req.getContentType() + "<BR>");
int content_length = req.getContentLength();
output.println("ContentLength: " + content_length + "<BR>");
if(content_length > 0) {
output.println("Content: ");
ServletInputStream input = req.getInputStream();
byte [] buffer = new byte[1024];
int nb;
while((nb=input.read(buffer))!= -1) {
output.write(buffer,0,nb);
Can somebody tell me how to write a java code sending a http request with the content of a file in the content of the request ?

How to invoke a jsp page from java which does not use Servlets?

Hello,
I am working in Documentum. I am trying to invoke a jsp page from another java page which does not use Servlets.
I tried doing this by just instantiating the java class related to the jsp page from my present java class.In my java class related to the jsp page, I have defined onInit() and onRender() methods.
Now, I am trying to call the jsp page from my present java class by just instantiating the java class related to the jsp page. This throws a java.lang.NullPointerException.
Any comments or suggestions on this.Any help would be appreciated.
Thanks,
Ranjith M.V

RanjithM.V wrote:
Hello,
Thanks for the reply. One important thing I forgot to mention. I am also using xml component.And?
As this is the standard way used for coding in Documentum, I do not want to use Beans.Well, JSP's should, in and of themselves, contain no functional code. It should all be only display.
Without that is it not possible?What did I say? I said,
masijade wrote:
It is possible, but I very, very, very, much doubt, that it would be worth the effort.And, if you don't know how, a forum is not truely going to be able to help you implement it (at least not in less than a few years time, at which point it would be outdated).
>
Appreciate your understanding and help.
Thanks,
Ranjith M.V

Java Stored Procedure calling HTTP Servlet in Weblogic

I am currently working on an e-commerce application for a brick-n-mortar electronics store. The store currently has an Oracle database that contains all of the products the store sells. The e-commerce site will have a separate Oracle database. Both database are Oracle 9i release 2 databases. The e-commerce site will be using BEA's Weblogic as its application server. I need to move data from the store db into the e-commerce db. The actual moving of the data is not the issue. The issue comes from needing to call several methods on a Stateless Session EJB, loaded on the Weblogic server, to perform backend processing. I wanted to make a JNDI call from a Java Stored Procedure but with Release 2, this option is no longer supported. The release notes (http://otn.oracle.com/tech/java/htdocs/9idb2_java.html) indicated that the JVM now supports calling out to Servlets using HTTP Client from a Java Stored Procedure.
Has anyone done this? Is there any sample code available?
Thanks for any help.

I am currently working on an e-commerce application for a brick-n-mortar electronics store. The store currently has an Oracle database that contains all of the products the store sells. The e-commerce site will have a separate Oracle database. Both database are Oracle 9i release 2 databases. The e-commerce site will be using BEA's Weblogic as its application server. I need to move data from the store db into the e-commerce db. The actual moving of the data is not the issue. The issue comes from needing to call several methods on a Stateless Session EJB, loaded on the Weblogic server, to perform backend processing. I wanted to make a JNDI call from a Java Stored Procedure but with Release 2, this option is no longer supported. The release notes (http://otn.oracle.com/tech/java/htdocs/9idb2_java.html) indicated that the JVM now supports calling out to Servlets using HTTP Client from a Java Stored Procedure.
Has anyone done this? Is there any sample code available?
Thanks for any help. Hi,
sorry we have not yet formally documented this but here is a code snippet
Kuassi
/* HttpCallout - simple test to callout to static pages from Java Stored
Procedures */
import java.io.IOException;
import java.io.InputStream;
import HTTPClient.HTTPConnection;
import HTTPClient.HTTPResponse;
import HTTPClient.AuthorizationInfo;
public class HttpCallout {
public static void main(String[] argv) throws InterruptedException {
HttpCallout t = new HttpCallout(argv);
t.run();
private String[] argv ;
HttpCallout(String[] argv) {
this.argv = argv;
void initSSL() {
public void run() {
try {
if ( argv.length == 0 ) {
System.out.println("HttpCallout " +
"protocol " +
"host " +
"port " +
"page ");
return;
// process arguments
int argc = 0;
String protocol = argv[argc++];
String host = argv[argc++];
int port = Integer.parseInt(argv[argc++]);
String page = argv[argc++];
// Debugging - don't set for now
// System.setProperty("HTTPClient.log.mask", "3");
// noop
initSSL();
// Grab HTTPConnection
HTTPConnection con = new HTTPConnection(protocol, host, port);
con.setTimeout(20000);
con.setAllowUserInteraction(false);
// Grab Response
HTTPResponse rsp = con.Get(page);
byte[] data = rsp.getData();
if ( data == null ) {
System.out.println("no data");
} else {
System.out.println("data length " + data.length);
System.out.println(new String(data));
catch ( Throwable ex ) {
ex.printStackTrace();

Java.lang.NullPointerException with Tomcat Servlet

Hi,
I have got in my database the year as a number (Integer) like 1973 whatever, and in my servlet i get the yearFrom and the yearTo. Then parse them into an integer but I get java.NullPointerException and I dunno why???
Then I put them in my SQL statement:
ageFrom = Integer.parseInt(strAgeFrom);
ageTo = Integer.parseInt(strAgeTo);
String SQL = "SELECT * FROM People where YearBirth >= " + ageFrom + " AND YearBirth <= " + ageTo + " AND Gender like '%" + seekFor + "%' AND Interests like '%" + interest + "%' AND Address2 like '%" + suburb + "%';";Thank you

Hi,
I have got in my database the year as a number
(Integer) like 1973 whatever, and in my servlet i get
the yearFrom and the yearTo. Then parse them into an
integer but I get java.NullPointerException and I
dunno why???
Then I put them in my SQL statement:
ageFrom = Integer.parseInt(strAgeFrom);
ageTo = Integer.parseInt(strAgeTo);
String SQL = "SELECT * FROM People where YearBirth >=
" + ageFrom + " AND YearBirth <= " + ageTo + " AND
Gender like '%" + seekFor + "%' AND Interests like
'%" + interest + "%' AND Address2 like '%" + suburb +
"%';";Thank youThat's simply because your strAgeFrom, strAgeTo return NULL.
If it's possible that you'll get NULL values from those fields, you should do some data validation before using Integer.parseInt().
Good luck :D

Java Video Streaming

Hello
I try to get an overview of what's possible according to video streaming in sun's wonderland. The goal is to stream prerecorded videos, stored on a webserver (not necessarily on the same machine like the wl-server ) into our wonderland embedded swing application.
My first investigation shows me, that I have the following possibilities to stream videos in Java:
- Java Media Framework (JMF)
- JVLC (VideoLAN Java API)
- Quicktime Streaming API (only quicktime movies)
-> http://www.onjava.com/pub/a/onjava/2005/01/12/strmng_qtj.html
- Red5 Java Client (only flash movies):
-> http://www.actionscript.org/resources/articles/617/1/Streaming-and-database-connection-with-red5-media-server/Page1.html
- Mplayer Java Client:
-> http://beradrian.wordpress.com/2008/01/30/jmplayer/
So what do you suggest me? What's the best way? Are there any code-examples for streaming videos from a webserver to a local java-client using JMF?
Thanks for your help.
Kind regards,
Peter
Edited by: blood_on_ice on Mar 23, 2009 12:44 AM

Thanks for your answer...
>
The "best" way? Considering you're using a Swing application, your best bet is probably going to be JMF. JavaFX has support for playing videos, but I'm not sure if they have support for RTP streams or progressive downloads or anything.
If you wanted to go the extra mile, you could look into embedding a Silverlight or Flash player into your Swing application. Silverlight is pretty cool because it's HD capable...>
Yes I have to develop the video streaming in a swing non-top-level Swing JComponent (such as a JPanel) because this is a wonderland restriction...I don't know JavaFX yet, is it possible to build a JavaFX app inside such a non-top-level Swing component? Embedding silverlight in a java-app isn't a really good idea I think...
Further recherches shows me, that I need on-demand video streaming with the ability to start, stop, play, pause etc. the video which is stored for example on a webserver. This is possible throught RTSP or HTTP according to: [http://www.remlab.net/op/vod.shtml|http://www.remlab.net/op/vod.shtml] ...when I use rtsp, I need a streaming-server like vlc, for http i just need my video stored on a webserver.
So what do I have for possibilities to stream such a video in a java client (non-top-level Swing JComponent) with RTSP or HTTP?
I've tried following rtp-code-example: [http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/AVReceive.html|http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/AVReceive.html]
but it didn't work...I started my vlc-streaming server this way:
cvlc -vvv movie.mpg --sout '#rtp{dst=192.168.1.33,port=1234,sdp=http://localhost:8080}'but the output of the rtp-code-example shows the following:
run:
- Open RTP session for: addr: 127.0.0.1 port: 8080 ttl: 1
- Waiting for RTP data to arrive...
- Waiting for RTP data to arrive...
- Waiting for RTP data to arrive...
- Waiting for RTP data to arrive...
- Waiting for RTP data to arrive...
With vlc http://127.0.0.1:8080 i receive the stream...
But I couldn't find an example of how I can get an rtsp-stream or a http-stream in jmf...
Thanks for your help.
Kind regards,
Peter
Edited by: blood_on_ice on Mar 23, 2009 8:59 AM
Edited by: blood_on_ice on Mar 23, 2009 9:00 AM

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