Cannot load servlet(s)

Question

This is very strange to me. I've never had a problem like this before. I just started using Tomcat 5.5 (I used to use older versions) and after deploying I cannot seem to access any serlvets. I took everything out except for this one servlet and reduced to my web.xml file to map the one servlet. Here are the contents of my web.xml:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
    <display-name>My APP</display-name>
    <description>
     This is my app
    </description>
    <servlet>
        <servlet-name>SignIn</servlet-name>
        <servlet-class>SignIn</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>SignIn</servlet-name>
        <url-pattern>servlet/SignIn</url-pattern>
    </servlet-mapping>
</web-app>Everything is in the right place and the jsp files load just fine, but I cannot access the SignIn servlet. I tried some of the example servlets already in Tomcat and they work just fine. I also see no difference in their web.xml files from mine.
I also never made any changes to conf/web.xml as I don't want the invoker running (I've read about security flaws when using it). Any thoughts? Thanks in advance.

Answer 1

Just a wild guess here. Since you've switched to Tomcat 5.5, it comes with the implementation of servlet specification 2.4, so try this for the header of web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
On the other hand, I see that the class name of your servlet is not fully qualified - just SignIn is not enough, there should be at least some package name, like:
org.myorg.SignIn
depending on your package structure.
Regards,
Oleg
Message was edited by:
JOlegOOP
Message was edited by:
JOlegOOP