Basic Servlet Compilation Problem

[sudhir harsha]

Dear Members,
I'm trying to compile "BeerSelect.java" file as mentioned below(3rd chapter in HFSJ), but it's displaying the following errors. Please suggest how to resolve this problem.

I've set CLASSPATH = E:\tomcat\Tomcat5.0\common\lib\servlet-api.jar, But still I'm getting this problem.

E:\tomcat\MyProjects\beerV1>javac -classpath E:\tomcat\Tomcat5.0\common\lib\servlet-api.jar:classes:. -d classes src\com\example\web\BeerSelect.java

src\com\example\web\BeerSelect.java:3: package javax.servlet does not exist
import javax.servlet.*;
^
src\com\example\web\BeerSelect.java:4: package javax.servlet.http does not exist

import javax.servlet.http.*;
^
src\com\example\web\BeerSelect.java:7: cannot resolve symbol
symbol : class HttpServlet
location: class com.example.web.BeerSelect
public class BeerSelect extends HttpServlet{
^
src\com\example\web\BeerSelect.java:8: cannot resolve symbol
symbol : class HttpServletRequest
location: class com.example.web.BeerSelect
public void doPost(HttpServletRequest request,
^
src\com\example\web\BeerSelect.java:9: cannot resolve symbol
symbol : class HttpServletResponse
location: class com.example.web.BeerSelect
HttpServletResponse response)
^
src\com\example\web\BeerSelect.java:10: cannot resolve symbol
symbol : class ServletException
location: class com.example.web.BeerSelect
throws IOException , ServletException {
^
6 errors



with Thanks and Regards,
Sudhir

[Kj Reddy]

It is class path problem. Make sure you are setting it correctly.

[sadasiva kumar]

I've set CLASSPATH = E:\tomcat\Tomcat5.0\common\lib\servlet-api.jar, But still I'm getting this problem


In your class path u must end with semicolon
servlet-api.jar;

[Chandra Sagi]

Your CLASSPATH should also include present directory (.\) and also to C:\Program Files\Java\jdk1.5.0_04\bin (this varies for you). This should solve your problem.

Thanks
Chandu

[sudhir harsha]

Dear Chandra,

I've set the CLASSPATH to present directory (.\) and also to E:\j2sdk1.4.2_10\bin . Still I couldn't able to solve the problem!
You might've noticed here that I'm using Tomcat5.0 and Jdk1.4. Is there ne problem due to the difference in version? Plz suggest.

Thanks,
Sudhir

[Vishnu Prakash]

I've set the CLASSPATH to present directory (.\) and also to E:\j2sdk1.4.2_10\bin . Still I couldn't able to solve the problem!


You are NOT supposed to include bin path in classpath. It has to be set in path environment variable.

set path=%path%;E:\j2sdk1.4.2_10\bin;E:\tomcat\Tomcat5.0\bin;

set classpath=%classpath%;.;E:\tomcat\Tomcat5.0\common\lib\servlet-api.jar;


You might've noticed here that I'm using Tomcat5.0 and Jdk1.4. Is there ne problem due to the difference in version? Plz suggest.


Thats OK.

Let me know how it goes.
[ March 02, 2006: Message edited by: Vishnu Prakash ]

[sudhir harsha]

Hi,
Let me clearly explain what path I've set to PATH and CLASSPATH varables;

CLASSPATH: E:\tomcat\Tomcat5.0\common\lib\servlet-api.jar;

PATH: E:\j2sdk1.4.2_10\bin;E:\tomcat\Tomcat5.0\bin;

Thats all I did. Ne thing else to be added? Plz suggest.

Sudhir

[Vishnu Prakash]

Which version of windows are you using?

set the path and classpath as I had suggested you.

[sudhir harsha]

Hi Vishnu,
I'm using Windows-2000.
I've set exactly what u mentioned, but still no luck

Sudhir

[Vishnu Prakash]

In window 2000/XP set the variables in

1. Right click My-Computer==>Advanced(tab)==>Environment Variables==>Click new for each one of these variables.(or)
2. Start ==> Settings ==> Control Panel ==> Sytem ==> Advanced(tab)==>Environment Variables==>Click new for each one of these variables.

[sudhir harsha]

Hi Vishnu,
I'm sorry for troubling U.
Ofcourse I did like that only.

[Vishnu Prakash]

Good. You got more variables to set.

set these variables as you did before.

TOMCAT_HOME=E:\tomcat\Tomcat5.0
CATALINA_HOME=E:\tomcat\Tomcat5.0
JAVA_HOME=E:\j2sdk1.4.2_10

[sudhir harsha]

Hi,
Yes I Added, still same errors!

[Vishnu Prakash]

I think you are messing up with package directory structure while compiling.

As for as the declarations are concerned you got everything correct.

[sudhir harsha]

Hi Vishnu,
Solved that problem.Thanku.
Now I deployed the BeerSelect.class in the "E:\tomcat\Tomcat5.0\webapps\Beer-v1\WEB-INF\classes\com\example\web", and then I tried to run http://localhost:8080/Beer-v1/form.html. I'm getting the form but after clcking "SUBMIT" Nothing is happening!!! I mean browser not displaying ne output. I wrote DD(web.xml),form.html etc,.everything as it is mentioned in HFSJ. But Y I'm not getting the out put?? Ne Idea? Ne thing else to be done?? Plz suggest.

regards,
Sudhir

[Vishnu Prakash]

Solved that problem.Thanku.

Congrats

But Y I'm not getting the out put?? Ne Idea?

Use full words.

Y - why
Ne - Any

I wrote DD(web.xml),form.html etc,.everything as it is mentioned in HFSJ. But Y I'm not getting the out put?? Ne Idea? Ne thing else to be done?? Plz suggest.

Did you write the code inside the doPost() method.

[sudhir harsha]

Hi,
Yes ofcourse I worte. I've copied as it is from HFSJ.

[Ice Penov]

Sudhir,

read this carefully :

http://www.coreservlets.com/Apache-Tomcat-Tutorial/

If you read it, and you still have deployment/compilation problems, then you're doing something wrong.

If that is the case, I have an advice for you : try again!

[Sandeep Chhabra]

Is Tomcat 5.5 also compatble with JAVA 1.5?
actually i am also getting the same errors as mentioned by Sudhir.

So can anyone plz tell me?

Thanks

[Christophe Verré]

Tomcat 5.5 requires JRE 5.0 by default

[Niranjan Deshpande]

u can get complete tutorial on Tomcat installation on www.coreservlets.com
i used it it my tomacat is running fine

[Muthuvel Ramamoorthy]

E:\tomcat\MyProjects\beerV1>javac -classpath E:\tomcat\Tomcat5.0\common\lib\servlet-api.jar:classes:. -d classes src\com\example\web\BeerSelect.java


for windows OS, we should use ; instead of : in between jar & classes

E:\tomcat\MyProjects\beerV1>javac -classpath E:\tomcat\Tomcat5.0\common\lib\servlet-api.jar;classes;. -d classes src\com\example\web\BeerSelect.java