Tomcat and servlet

hi to all... i've configured my tomcat 6.0 for the deployment of servlet but i always get a 404 error, servlet not available...
environment variables:
classpath has been pointed to servlet-api.jar ans jsp-api.jar
java_home set to point to jdk folder
configuration of tomcat:
conf/web.xml: uncomment servlet/* and its corresponding servlet mapping
conf/context.xml: set reloadable="true"
still when i do all of this nothing works! even my html pages! error page not found...
whats the problem?
plz help with the configuration of tomcat
heartful thx

I am having the same problem. I tried exactly like an example of a book.
Then i read this thread and I tried to load the examples that come with tomcat.
http://localhost:8080/servlet-examples/servlet/HelloWorldExample
And it�s not working. It works only .html files, for example:
http://localhost:8080 -> opens the tomcat homepage
http://localhost:8080/jspbook/index.html ->opens my example
my project looks like this(inside the webapps) /jspbook/ WEB-INF ; build.xml ; index.html
/jspbook/WEB-INF/ web.xml ; classes
/jspbook/WEB-INF/classes/com/jspbook/HelloWorld.java
My web.xml got:
<servlet>
<servlet-name>HelloWorld</servlet-name>
<servlet-class>com.jspbook.HelloWorld</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloWorld</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>
Then I try to acess it
http://localhost:8080/jspbook/hello
and I get 404. the resource is no available
Who can help me?

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    1. Run everything in a servlet container like tomcat. I hesitate to do this because i would be putting a lot of functionality which isn't about the web into a servlet container. Also, I have a lot of application scope data that is maintained and shared by all servlets/web services. However, it would be really easy just to put everything into tomcat and use ServletContext to maintain some global objects.
    2. Use a Java EE to seperate application/business logic and data access into session beans and entity beans. I hesitate to this because it seem a bit overkill because the system isn't very big or complex right now. It also means that I would have to learn to use EJB's instead of just using some POJOs.
    3. Run the web tier in a servlet container and the main app in a separate JVM, and then connect the tier by sending serialized objects over TCP sockets. I don't like writing network code but at least there is some separation of the tiers.
    What would you do? Maybe I have overlooked a much better solution to the problem?
    Let me just say that the system is the product of a student project spanning one semester, so it's important to choose the RIGHT solution (architectural-wise) instead of the something quick and dirty that is hard to defend.

    jschell wrote:
    Run everything in a servlet container like tomcatTomcat is a JEE container.Now I am confused. Maybe you mean Glassfish? Tomcat is definitely a web container(?).
    Let me just say that the system is the product of a student project spanning one semester, so it's important to choose the RIGHT solution (architectural-wise) That pretty much makes it impossible then.
    1. A "Right" solution is generally only proven by time.
    2. It requires a great deal of knowledge about the business domain.Yeah, you are right. Let be try to rephrase it. What solution (pattern) would be considered the most common or appropriate when you have a Java App and want to expose a few methods as a website and web service?
    I hesitate to do this because i would be putting a lot of functionality which isn't about the web into a servlet container. Also, I have a lot of application scope data that is maintained and shared by all servlets/web servicesHuh? Do you already have an exposed web service? If you already have a server which other clients communicate then where does this functionality that you don't want to be tomcat running now? Or where do you think that you want to run it? And if you are or do run it somewhere else then tomcat could access it the same way any other client accesses that server.Sorry, that sentence was written badly. I don't have anything right now. What I meant to write was that I will have a lot of application scope data, objects that are kept in memory as long as the server is running, shared by multiple servlet instances.

  • Help,JSP and SERVLETS!

    hello:
    i've downloaded ECLIPSE 3.2,TOMCAT 5.5 .
    i tried to build simples examples o servlets but i failed could you please tell me how to proceed?i'm new at this plus i've got a project to do with all this so plz can you give some links to go,i tried but no links was clear.
    i've got to give to my professor an examples executed (servlets,jsp)
    thank you

    HISSO wrote:
    i wil give up on talking about stupid gossip
    you must act professional and i you can't help it's ok
    so plz i juste want help
    i'm so busy finishing my studies
    when it comes to talk about development with tomcat and eclipse together i'm new so i need some advices,so plz let's be serious!
    i'm working hard to finish my project!Try to communicate less like a monkey with electrodes attached to it's genitals. This means stop using words like "plz" and write "please" instead.
    If you want specific help with a specific problem then you should ask a specific question. "help, JSP and SERVLETS" is not a specific question. And you should also note that if your specific question is about Tomcat specifically or Eclipse specifically then you are in the wrong place to begin with.
    So do you want to try again?

  • Different things on Applets and Servlets

    I use Eclipse. I create two projects: applet and servlet (deploy on Tomcat). One is with the function main, the other has doGet. In these functions I write the same string:
    Mac.getInstance("HmacSHA1");
    But when I run applet - it's ok, when I deploy servlet and run on Tomcat - there are exception: java.security.NoSuchAlgorithmException: Algorithm HmacSHA1 not available
    How to make it availible at servlet?
    Message was edited by:
    AntonVatchenko

    The 2 apps (applet versus servlet) are likely using different versions of the Java runtime (and / or security extensions to them). And on one version that security algorithm exists (is built-in, or added as an extension in your JRE's lib/ext folder or something like that); while on the other the algorithm does not exist.
    Make the J2EE container (the one running the servlet) use the same version of Java as the applet is. I suppose that's just a hint though, that your next question will be something like "Ok, how do I do that?". My job was just to point you in the right direction. Hopefully I've done that.

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