HTTP Status 404 - on Eclipse with Tomcat

Question

I am trying just to run a servlet on my local Tomcat with Eclipse.

But I keep getting this error and do not have any idea what to do differently.

I actually recorded it here : http://www.screenr.com/ZyD8

Many thanks!

Also I changed the web.xml to this:

      <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    id="WebApp_ID"
    version="3.0"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" >

    <display-name>
TEST3
    </display-name>

    <welcome-file-list>

        <welcome-file>
TEST3
        </welcome-file>
    </welcome-file-list>

    <servlet>

        <servlet-name>
helloServlet
        </servlet-name>

        <servlet-class>
HelloServlet
        </servlet-class>
    </servlet>

    <servlet-mapping>

        <servlet-name>
helloServlet
        </servlet-name>

        <url-pattern>
/hello
        </url-pattern>
    </servlet-mapping>

</web-app>

Answer 1

I have seen your link.

When ever you run any dynamic web project. By default Servlet container (which is Tomcat in this case) searches for files specified in wel-come list. Check your web.xml, it should contains entry like

<welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>

You haven't created file from any of the above list. So, running

http://localhost:8080/TEST2 will give you 404 error.

Rather run : http://localhost:8080/TEST2/HelloSerlvet will invoke the servlet which you have created.

Edit: Check Project Menu of eclipse and verify "Build Automatically" is checked and Servlet container is running (http://localhost:8080).

Edit 2: Right Click Project --> Properties, Select Java Build Path --> source Tab --> Change Default output folder. Create /WEB-INF/classes under /WebContent (default in eclipse)

Answer 2

This is based on the answer from Hardik Mishra with some highlights: 1. From the file explorer (not from Eclipse), Manually create the "/WEB-INF/classes" under /WebContent 2. Right Click Project --> Properties, Select Java Build Path --> source Tab --> Change Default output folder to the folder you just created above. 3. go to the file explorer, not from Eclipse, since the Eclipse "project Explorer" may have some filters that doesnot show the classes folder. You should see the .class files compiled under this directory

Try to test it again. If it does not work, restart Eclipse for one time and then it should work.