Web.xml mapping not working

Question

I have a servlet located at com.conversion.web called leftNavReader.java
I'm trying to access this servlet on my localhost with the following URL: http://localhost:8080/Conversion/start
but I keep getting this error:
HTTP Status 404 - /Conversion/start
type Status report
message /Conversion/start
description The requested resource (/Conversion/start) is not available.
Here is what my web.xml looks like:
<?xml version="1.0" encoding="UTF-8"?>
<web-app>
     <display-name>DataConversionWeb</display-name>
     <servlet>
          <servlet-name>start</servlet-name>
          <display-name>Start</display-name>
          <servlet-class>com.conversion.web.leftNavReader</servlet-class>
     </servlet>
     <servlet-mapping>
          <servlet-name>start</servlet-name>
          <url-pattern>/start</url-pattern>
     </servlet-mapping>
</web-app>
Does anyone have any idea why I'm getting this error?

Answer 1

Since the spaces may cause problems and I have
everything in the My Projects directory, I decide to
just start from scratch. Very good.
But... someone else
installed eclipse for me and set that up, so I may
need some help with that, not sure if you can help.As far as I know Eclipse can also be Unzipped to any folder, and
theres a file called eclipse.exe , one would simply double click on that to invoke eclipse. I don't think you would have to re-install Eclipse.
You could create a new project, and set
C:\dev\projects\Conversion\ as your Eclipse Workspace .
But lets put Eclipse on hold for now, we can still configure this whole project manually without Eclipse, which will help you understand what's going on under the hood. Also, in the beginning it's simpler to configure independent of the IDE.
So I recommend that you save your work, uninstall
Tomcat 6.0.x and re-install it on a path thatdoesn't
have any spaces in it.
For example:
C:\dev\tomcat\ So I've uninstalled tomcat and re-installed in
c:\dev\tomcat as recommended...Good, I assume that immediately under C:\dev\tomcat\ folder you see folders like bin, conf, webapps etc
Assuming that Tomcat was Unzipped to the above
folder. and there isn't another main folder underthe
above folder, set you system envrionment variable
CATALINA_HOME to the above folder.How do I do this?On MS Windows, click Start ---> Settings ----> Control Panel
Look for System , --> Doubl Click on System -----> Click on the Advanced tab ----> then under the "System Variables" panel ------> Click on New button -------->
in the Variable Name: type CATALINA_HOME
in the Variable Value: type C:\dev\tomcat
Then click Ok , that will set CATALINA_HOME to C:\dev\tomcat
~~~~~~~~~~~~~~~~~~~~~~~~~~
There's a RUNNING.txt file under Tomcat's folderthat
explains configuring it. Tomcat expects JAVA_HOMEto
be set to your JDK's root folder . Again if JDK is
installed on a path that has spaces then Irecommend
installing it on a path with no spaces forexample:
C:\dev\jdk\
Similarly , follow the above steps to set JAVA_HOME to C:\dev\jdk
Also, under System Variables you may see a variable called Path
If it doesn't exist , then create a new one, if it already exists then add the following to the Path variable. (notice how the semi colon is used as a separater)
;%JAVA_HOME%/bin;%CATALINA_HOME%/bin;
By setting the above you will be able to call
java , javac and Tomcat's startup.bat and shutdown.bat from anywhere on the DOS Command line.
>>
~~~~~~~~~~~~~~~~~~~~~~~~~~I've moved the jdk to the director as recommended,
but not sure hot to set the JAVA_HOME.See above...
I haven't even gotten through the rest of your post
yet, as I need to work on getting Eclipse set up
again too Leave Eclipse for later ---- it will just complicate things for now.
Once you have the project runnun under Tomcat we can figure out Eclipse.
and I figure I might as well set up my
"new" project using Virtual Hosts from the beginningLeave Virtual Host for later ------ it is easy to understand , I will explain it later , once you have the above basic set up running.
and do this right... This is quite the learning
experience ;)First , second and third time it is... but if you do this often, it will get much easier.