Servlet doing serialization

Hi all,
I'm designing a small app in order to perform compilation test on struts framework using flash tools. The project is organized this way: the user tells how many "compilation test" he wants to perform on the main page and then these informations are passed to a servlet which generates fake informations about the user and perform the compilation of a Flash animation. All these informations (first name, last name, mail, various informations and path to flash animation) are stored inside a separate class which also reads the content of the flash file and stores it into an attribute. This class implements the serializable interface. When things are done, I try to serialize the object.
Problems are beginning at this point: I'm not able to serialize my object. In fact, I generate a random filename and pass it to a FileOutputStream, so it is supposed to create my file. Despite of this, I get an *annoying* Error 500 which tells me the following:
java.io.FileNotFoundException: /var/lib/tomcat5/webapps/struts_test/WEB_INF/classes/objects/aGdsPhOboRJgf.ser (No such file or directory)
     java.io.FileOutputStream.open (Native Method)
     java.io.FileOutputStream.<init> (FileOutputStream.java:179)
     java.io.FileOutputStream.<init> (FileOutputStream.java:70)
     java.io.FileWriter.<init> (FileWriter.java:46)
     struts_test.IdentifyAction1.execute (IdentifyAction1.java:76)
     org.apache.struts.action.RequestProcessor.processActionPerform (RequestProcessor.java:421)
     org.apache.struts.action.RequestProcessor.process (RequestProcessor.java:226)
     org.apache.struts.action.ActionServlet.process (ActionServlet.java:1164)
     org.apache.struts.action.ActionServlet.doPost (ActionServlet.java:415)
     javax.servlet.http.HttpServlet.service (HttpServlet.java:709)
     javax.servlet.http.HttpServlet.service (HttpServlet.java:802)
     sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
     sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:39)
     sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:25)
     java.lang.reflect.Method.invoke (Method.java:597)
     org.apache.catalina.security.SecurityUtil$1.run (SecurityUtil.java:243)
     java.security.AccessController.doPrivileged (Native Method)
     javax.security.auth.Subject.doAsPrivileged (Subject.java:517)
     org.apache.catalina.security.SecurityUtil.execute (SecurityUtil.java:272)
     org.apache.catalina.security.SecurityUtil.doAsPrivilege (SecurityUtil.java:161)This stacktrace guides us to the idea that we don't have deployed the right security policy, but it isn't. My catalina.policy contains the following:
grant codeBase "file:${catalina.home}/webapps/struts_test/-" {
     permission java.io.FilePermission "/var/lib/tomcat5/webapps/struts_test/WEB-INF/classes/struts_test/flash/-", "read,write";
     permission java.io.FilePermission "/var/lib/tomcat5/webapps/struts_test/WEB-INF/classes/objects/test.ser", "write,read";
};So I've tried to tell it a nice permission java.security.AllPermission; and this results in the non-appearance of the error message, but the file is *NOT* created... It's going to drive me nuts... So if anyone has an idea, I'd be honoured to read it :)
Thanks!
System Configuration:
OS: Ubuntu Linux 7.04
Tomcat: version 5.0
Java: JDK1.6.0_02
SE with some Ant and Struts-related libraries and

Are you sure the path is correct?
ava.io.FileNotFoundException: /var/lib/tomcat5/webapps/struts_test/WEB_INF/classes/objects/aGdsPhOboRJgf.ser (No such file or directory)
Should it not be "WEB-INF" instead of "WEB_INF"?

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Package javax.servlet does not exist - settings appear to be correct

laugh as I write this post...it's hardly a "new topic."...but everything seems set just as it should be...
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These are my environment settings (note that the JAVAX package is located under the src folder in Java)
Catalina Home:
C:\apache-tomcat-6.0.10
CLASSPATH:
C:\apache-tomcat-6.0.10\lib\servlet-api.jar;
C:\apache-tomcat-6.0.10\lib\jsp-api.jar;
C:\apache-tomcat-6.0.10\lib\el-api.jar;
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C:\Program Files\Java\jdk1.6.0_03\src
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C:\Program Files\Java\jdk1.6.0_03
Path:
C:\Program Files\Java\jdk1.6.0_03\bin;%PATH%
Any ideas (excluding the one that maybe I should let my hair grow out, put on some tackey shorts and sandles and start palying an instrument in the streets of Austin for living?)

cabkats wrote:
You are then suggesting that I make the corrections directly to the files in apache using notepad instead of using the envir. variables?No I am not suggesting that. I am suggesting that you need to read the documentation about the product(s) and set them up the way they require, rather than blindly think that the CLASSPATH environment variable is some magical entity.
I will try this, but I was hoping that since my IDE auto configured (with exception to java_home) that I would not have to do this. I wil give it try....thanks for the suggestion.See, you're using an IDE. Like I mentioned, IDEs do not use the CLASSPATH environment variable. You need to set up your project in your IDE in such a way that it knows what the dependent jars are. I'm sure there's a way to add jars to your project's dependencies.

Javax.servlet does not exit

hello all,
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Edited by: kuchu on Jun 26, 2009 12:00 PM

The servlet API is included in the application server implementation which you're going to use (in this case Tomcat). You need to associate the application server with the Netbeans project. Check the project properties.
I cannot tell the detailed steps how to do it in Netbeans as I already uninstalled it after 5 minutes of trying some years ago, but in Eclipse you can select and add the application server during the 'create dynamic web project' wizard. It is smart enough to include the appserver's libraries in the project's build path. From what I heard and read about Netbeans is that it is also able to do so.

ANT script genrated error: package javax.servlet does not exist

Hi there,
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well...I set in the classpath the location of the servlet-api.jar
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Hi..seems u r new to J2ee.. dont worry its a very small problem:
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I am using J2EE sdk 1.4 and running on xp
This is the classpath setting:
C:\Sun\AppServer\lib\j2ee.jar;
This is the PATH setting
C:\Sun\AppServer\bin;
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Hi,
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Servlet does not recognize Arabic letter "Feh"

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Edited by: a.Tebar on Jan 31, 2010 11:53 AM
Edited by: a.Tebar on Jan 31, 2010 11:56 AM

Thank u Sir.
Let say, problem still going on.!
Please let give you extra information about an environment:
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ATMTag.java:5: package javax.servlet does not exist

My j2ee jdk1.4.2 is not supporting javx package.
i already set all pathh and class path.
anybody can help me.
details are given below ::
C:\AVA\J2EE Programs\JSP\JSPCustomTag>javac ATMTag.java
ATMTag.java:5: package javax.servlet does not exist
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^<br>
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<br>
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<br>
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When compiling servlets etc, you need to include in your classpath a jar file with all the javax.* classes defined in it.
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For J2EE 1.4 Server, the jar is [J2EE_HOME]/lib/j2ee.jar
Where the _HOME directory is the directory where you installed J2EE.
Include this jar file in your classpath when compiling.
Good luck,
evnafets

Package javax.servlet does not exist, package javax.servlet.http does not

Dear All,
I am a newbie to JAVA.
I installed JDK1.6.0_04, then NetBeans IDE 6.0
I tried compiling an example servlet, but got this error message:
package javax.servlet does not exist, package javax.servlet.http does not exist
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Can anyone, please, help me with this.
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davidgoodman wrote:
Dear All,
I am a newbie to JAVA.
I installed JDK1.6.0_04, then NetBeans IDE 6.0
I tried compiling an example servlet, but got this error message:
package javax.servlet does not exist, package javax.servlet.http does not exist
What servlet/JSP engine do you plan to deploy to? Tomcat, perhaps?I think it's Tomcat (C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14). Are there other engines that come with NetBeans IDE 6.0 (when I downloaded NetBeans, I chose ALL)
>
If so, you'll need to put the servlet JAR in your CLASSPATH. (servlet-api.jar for Tomcat 5.5 and earlier, servlet.jar for 6.0 >and later.)
I tried locating these packages, but in vain.
You won't find them until you realize that you have to deploy that servlet someplace.How to deploy?
I also tried setting the CLASSPATH to many values, still it did not work.
See above. What were you planning to set CLASSPATH to?First I set to:
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Later I added this:
C:\Program Files\Java\jdk1.6.0_04\lib (out of trial-and-fail)
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C:\Program Files\glassfish-v2\lib
C:\Program Files\glassfish-v2\lib\ant\lib
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Should I be able to see/locate these packages, do I have to download them?
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Package javax.servlet does not exists - Cannot resolve symbol

Hello,
I am using JDK 1.3.1.06 version. I wanted to compile a simple servlet using this. But I am getting plenty of errors for all javax package. Why it is not able to find javax package classes?
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import javax.servlet.*;
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I am getting errors like this :
Package javax.servlet does not exists.
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javax.servlet doesn't come with the standard jdk. It's part of J2EE.
If you have tomcat, you can use the server.jar that comes with tomcat.
Or you can just download J2EE sdk instead.
I am getting errors like this :
Package javax.servlet does not exists.
cannot resolve symbol
symbol : class HttpServlet

Package javax.servlet does not exists ?

Hello,
I am using JDK 1.3.1.06 and trying to compile a simple Servlet. But getting errors as javax package classes does not exits and cannot resolve symobol.
The following is the program I am trying to compile:
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class TestServlet extends HttpServlet
     public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
          process(request, response);
     public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
          process(request, response);
     private void process(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
          PrintWriter out = response.getWriter();
          out.println("Hello World !");
I am getting errors such as :
Package javax.servlet does not exists.
cannot resolve symbol
symbol : class HttpServlet
Please advice me of any solution asap. Deep trouble.
Thanking you,
Forumans.

Just a guess...
JDK 1.3.1.06 This represents the Java language in the form of a JVM and the Java API (like java.lang.String.)
ServletThis is in J2EE, which if you look above was not mentioned.
If you look in the java docs for the JDK you will also find that javax.servlet does not exist.
I would guess however that you could start here - http://java.sun.com/j2ee/
However, keep in mind that your servlet still needs to run in something, so you better make sure that you are compiling against the correct J2EE server for what you are doing.

Package java.servlet does not exists

I am getting this error:
c:Program Files\Java\jdk1.6.0_10\bin>javac -Xlint HelloServlet.java
HelloServlet.java:2:package java.servlet does not exists
import java.servlet.;
^
HelloServlet.java:4; cannot find symbol
symbol: class GenericServlet
public class HelloServlet extends GenericServlet
^
5 errors
i am using jdk1.6.0_10. i tried to locate the servlet.jar file in the \lib directory, but the jar file was not there. how can i download one and include it in \lib?
import java.io.*;
import java.servlet.*;
public class HelloServlet extends GenericServlet {
public void service(ServletRequest request, ServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter pw=response.getWriter();
pw.println("<B>Hello!");
pw.close();
}

jatilau wrote:
forgive my ignorance.That's ok, we're all here to learn; but while (most) people on the forums are smart, they're (unfortunately) not all-knowing. They can't possibly know something about you or your environment unless you tell them.
it is because i have no one to look up at for help with java, except for the book (The Complete Reference, Java 2, 3rd Edition, Naughton & Schildt) and, of course, some times this forum.There's the whole Internet available to you. Remember, Google is your friend.
please, will anyone tell me how to find out what server type and version does JDK 1.6.0_10 provide? It doesn't. Java comes in three 'editions':
Micro (JME, earlier J2ME which is meant for mobiles and other similar platforms)
Standard (JSE, earlier J2SE which is what you're using, it's meant for core Java applications, like the sort you might use on your desktop.)
Enterprise (JEE, earlier J2EE which is for server side code. This includes JSPs, Servlets, EJBs etc)
i did not find any information about this in the book.Probably because it's a Java 'Standard' Edition (JSE or J2SE) book
What you need, to learn about servlets, is a JEE book. I'd suggest Head First Servlets and JSP from O'Reilly. Otherwise, follow the link I gave earlier to find tutorials.
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Javac -- javax.servlet does not exist

I have j2sdk1.4, j2re1.4 installed on rhat7.1
and CLASSPATH=/j2sdk1.4/lib/tools.jar
PATH=/j2sdk1.4/bin
when I run javac (or /j2sdk1.4/bin/./javac) test.java
it issue: test.java: package javax.servlet does not exist
import javax.servlet.*;
any suggestion?
Thanks in advance.

try {
javac -classpath /your/path/to/j2ee.jar *.java
}catch(WrongAnswerException e) {
System.exit(1);
}

Javax.servlet does not exist (please help)

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package com.myweb.trying;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class Serv1 extends HttpServlet {
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          PrintWriter out = response.getWriter();
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this is what i got
src\com\myweb\trying\Serv1.java:3: package javax.servlet does not exist
import javax.servlet.*;
^
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import javax.servlet.http.*;
^
src\com\myweb\trying\Serv1.java:7: cannot find symbol
symbol: class HttpServlet
public class Serv1 extends HttpServlet {
                          ^
src\com\myweb\trying\Serv1.java:8: cannot find symbol
symbol : class HttpServletRequest
location: class com.myweb.trying.Serv1
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se)throws IOException,ServletException{
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src\com\myweb\trying\Serv1.java:8: cannot find symbol
symbol : class HttpServletResponse
location: class com.myweb.trying.Serv1
       public void doPost(HttpServletRequest request,HttpServletResponse respon
se)throws IOException,ServletException{
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src\com\myweb\trying\Serv1.java:8: cannot find symbol
symbol : class ServletException
location: class com.myweb.trying.Serv1
       public void doPost(HttpServletRequest request,HttpServletResponse respon
se)throws IOException,ServletException{
                     ^
6 errors please help what im doing wrong
i have latest ver.6 of tomcat installed

exchange the : in your classpath with a ;
windows, in its infinite wisdom, uses a semi-colon as the path separator. the colon is what you would use if you were on unix, macosx, or linux.
== eldrich

Begginers Problems - Servlet does not get the "Request property".

I'm just beginning to learn about Servlet because fo my work. I have to do a servlet and a simple java file to interact with the servlet.
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Thank in advancing to anyone who can help.
/** The Servlet code */
package com.sigmatao.gde;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.lang.String;
public class test extends HttpServlet
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException
PrintWriter out = response.getWriter();
//ServletInputStream in = request.getInputStream();
response.setContentType("text/html");
out.println("<html>");
out.println("<body>");
out.println("Hello World via get!!!");
out.println("</body>");
out.println("</html>");
out.flush();
out.close();
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String men = req.getParameter("Valor");
res.setContentType("text/html");
// ServletInputStream in = request.getInputStream();
PrintWriter out = res.getWriter();
out.println("<html>");
out.println("<body>");
out.println("Hello World via post!!!");
out.println(men);
out.println("</body>");
out.println("</html>");
out.flush();
out.close();
/** The java file */
import java.net.*;
import java.io.*;
import java.net.HttpURLConnection.*;
import java.lang.String;
public class testpost{
public static void main(String[] args) throws Exception {
// create instance of url
URL url = new URL(args[0]);
HttpURLConnection con = (HttpURLConnection)(url.openConnection());
// set a request property with it�s value
con.setRequestProperty("Valor","Recibi Parametro");
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con.setRequestMethod("POST");
con.connect();
// get an input stream for reading
InputStream in = con.getInputStream();
// create a buffered input stream for efficency
BufferedInputStream bufIn = new BufferedInputStream(in);
// repeat until end of file
for (;;){
int data = bufIn.read();
// check for EOF
if (data == -1)
break;
else
System.out.print((char)data);
/* The result of execution **/
C:\Temp\URL>java testpost http://localhost:8080/gde/test.do
<html>
<body>
Hello World via post!!!
null
</body>
</html>

Thanks for the advice, but unfortunalety I need to do it with a java file because it is a specific requirement for the project I am working in.
Thanks for your time.

Package javax.servlet.http does not exist & package javax.servlet does not

Hello!
I am trying to compile this file:
/* serv2.java 29 Sep 04 */
import java.util.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class serv2 extends HttpServlet
     protected void doPost(HttpServletRequest req, HttpServletResponse res)
                              throws ServletException, IOException
          res.setContentType("text/html");
          PrintWriter out = res.getWriter();
          out.println("<HTML><HEAD><TITLE>Sample Servlet</TITLE></HEAD>"+'\n'+
                              "<BODY BGCOLOR='lightgreen'>"+'\n'+
                              "<H1 ALIGN=CENTER>Heading</H1>" + '\n' +
                              "<P><H2 ALIGN=CENTER>Message</H2");
          out.println("</BODY></HTML>");
}And I am getting this error message:
C:\Program Files\Apache Tomcat 4.0\webapps\ROOT\WEB-INF\classes\serv2.java:4: package javax.servlet does not exist
import javax.servlet.*;
^
C:\Program Files\Apache Tomcat 4.0\webapps\ROOT\WEB-INF\classes\serv2.java:5: package javax.servlet.http does not exist
import javax.servlet.http.*;
^
C:\Program Files\Apache Tomcat 4.0\webapps\ROOT\WEB-INF\classes\serv2.java:7: cannot resolve symbol
symbol : class HttpServlet
location: class serv2
public class serv2 extends HttpServlet
^
C:\Program Files\Apache Tomcat 4.0\webapps\ROOT\WEB-INF\classes\serv2.java:9: cannot resolve symbol
symbol : class HttpServletRequest
location: class serv2
     protected void doPost(HttpServletRequest req, HttpServletResponse res)
^
C:\Program Files\Apache Tomcat 4.0\webapps\ROOT\WEB-INF\classes\serv2.java:9: cannot resolve symbol
symbol : class HttpServletResponse
location: class serv2
     protected void doPost(HttpServletRequest req, HttpServletResponse res)
^
C:\Program Files\Apache Tomcat 4.0\webapps\ROOT\WEB-INF\classes\serv2.java:10: cannot resolve symbol
symbol : class ServletException
location: class serv2
                              throws ServletException, IOException
^
6 errors
Tool completed with exit code 1
I have tried setting CLASSPATH lib/servlet.jar but it still will not work.
Please help me!!!

Please check this page,
http://java.sun.com/j2se/1.4.2/docs/tooldocs/windows/classpath.html
and also
serv2 -> set it to Serv2
another nice to read :-)
http://java.sun.com/docs/codeconv/html/CodeConventions.doc8.html
+"Class names should be nouns, in mixed case with the first letter of each internal word capitalized"+
Another thing,
Put your class in a package, thanks =)
regards and goodluck,
jie

Servlet doing serialization

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