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From "Will Glass-Husain" <wgl...@forio.com>
Subject Re: Probably Spam Newb: SampleServlet Example not working
Date Tue, 02 Aug 2005 15:01:31 GMT
Hi Steve,

As a side note, VelocityServlet is deprecated with the upcoming version 
1.5 - consider using the Velocity Tools VelocityViewServlet which is 
actively maintained and supported.

See:
http://jakarta.apache.org/velocity/webapps.html

WILL

----- Original Message ----- 
From: "Steve O'Hara" <sohara@pivotal-solutions.co.uk>
To: "Velocity Users List" <velocity-user@jakarta.apache.org>; 
<miked@jamagination.com>
Sent: Tuesday, August 02, 2005 5:17 AM
Subject: RE: Probably Spam Newb: SampleServlet Example not working


> Hi Mike,
>
> The problem is in your Tomcat configuration.  Here's how it works:-
>
> Firstly-
> When Tomcat cranks up, it looks in the server.xml file to determine what
> servlets/plugins etc to load.
> You need to make sure that you have a <context> descriptor in here like 
> the
> following for your application;
>        <Context path="/CorrMan" docBase="D:\GLA\CorrMan"
>         debug="0" reloadable="false"> </Context>
> This tells Tomcat that a servlet exists in "D:\GLA\CorrMan" and that
> requests that start with /CorrMan should be directed to it e.g.
> http://localhost/CorrMan
>
> Secondly-
> A servlet directory MUST contain a WEB-INF subdirectory (e.g.
> D:/GLA/CorrMan/WEB-INF) within which there MUST be a web.xml file.
> The web.xml file tells Tomcat which class to invoke when it recieves a
> request destined for your servlet.
> Here's a typical one;
> <web-app>
>    <servlet>
>        <servlet-name>CorrManServlet</servlet-name>
>        <servlet-class>com.pivotal.CorrManServlet</servlet-class>
>    </servlet>
>    <servlet-mapping>
>        <servlet-name>CorrManServlet</servlet-name>
>        <url-pattern>/main/*</url-pattern>
>    </servlet-mapping>
> </web-app>
> This maps requests like http://localhost/CorrMan/main/blahblahblah to the
> class com.pivotal.CorrManServlet
>
> Finally-
> You need to make sure that the Tomcat servlet container can find your 
> class.
> You do this by either putting it in a jar file within a lib subdirectory 
> of
> WEB-INF, a war file in the root of WEB-INF or explicitly within the 
> classes
> subdirectory of WEB-INF e.g.
> D:\GLA\CorrMan\WEB-INF\classes\com\pivotal\CorrManServlet.class
>
> That's about it - I haven't looked at your example to know the specific
> details, but this should be enough for you to work the rest out.
>
> Steve
>
>
> -----Original Message-----
> From:
> velocity-user-return-16463-sohara=pivotal-solutions.co.uk@jakarta.apache
> .org
> [mailto:velocity-user-return-16463-sohara=pivotal-solutions.co.uk@jakart
> a.apache.org]On Behalf Of Mike D'Ambrogia
> Sent: 01 August 2005 23:41
> To: velocity-user@jakarta.apache.org
> Subject: Probably Spam Newb: SampleServlet Example not working
>
>
> All,
>
> New/inexperienced in Tomcat 5.0.28 but getting there slowly, currently
> reading the tomcat tutorial.  I've searched the V-U archives on
> marc.theaimsgroup.com without luck.  Trying to get the simpleservlet
> example up and running without luck.  I've gone overboard with info here
> in the hopes that the configuration mistake I'm making will be readily
> apparent to someone.
>
> TC located in C:\apache\tomcat\ on Win2kpro system,
> JAVA_HOME=j2sdk1.4.2_04 but also have jdk1.5.0_04 on the system too
>
> Per the instructions in
> velocity-1.4\examples\servlet_example1\readme.txt I've done the
> following:
>
> - made a new directory structure as follows :
>
>      C:\apache\tomcat\webapps\velexample
>      ./velexample/WEB-INF
>      ./velexample/WEB-INF/lib
>      ./velexample/WEB-INF/classes
>
> - put the velocity.jar into the velexample/WEB-INF/lib directory (it
> came named as velocity-1.4.jar, have not renamed)
>
> - put the SampleServlet.class into the velexample/WEB-INF/classes
> directory
>
> - put the sample.vm template into the velexample directory.
>
> - restart tomcat and access the servlet at
> http://127.0.0.1:8080/velexample/servlet/SampleServlet
>
> I've done nothing else to TC other than stop/start it.  on restart the
> console output shows this:
>
> Aug 1, 2005 3:18:18 PM org.apache.catalina.core.StandardHostDeployer
> install
> INFO: Installing web application at context path /velexample from URL
> file:C:\Apache\Tomcat\webapps\velexample
> Aug 1, 2005 3:18:18 PM org.apache.catalina.startup.ContextConfig
> applicationConfig
> INFO: Missing application web.xml, using defaults only
> StandardEngine[Catalina].StandardHost[localhost].StandardContext[/velexa
> mple]
> Aug 1, 2005 3:18:18 PM org.apache.catalina.core.StandardHost start
>
> after restart I go to the url above and get this:
>
> HTTP Status 404 - /velexample/servlet/SampleServlet
> type Status report
> message /velexample/servlet/SampleServlet
> description The requested resource (/velexample/servlet/SampleServlet)
> is not available.
>
> If I go to  http://127.0.0.1:8080/velexample/ I get a dir listing
>
> If I click on the sample.vm file in the listing I get the actual
> contents of the .vm file without the velocity substitutions for $name,
> $list, etc displayed which is probably correct given that I'm not
> running thru the servlet.
>
> Notes towards the bottom of \velocity-1.4\docs\developer-guide.html make
> reference to changes that need to be made to the web.xml file, adding:
>
> <servlet>
>  <servlet-name>MyServlet</servlet-name>
>  <servlet-class>com.foo.bar.MyServlet</servlet-class>
>  <init-param>
>      <param-name>properties</param-name>
>      <param-value>/velocity.properties</param-value>
>  </init-param>
> </servlet>
>
> Is this chg to web.xml required to run this example code??  Info is abit
> thin (for me at least) on what the values for servlet-name and
> servlet-class should be, looking for some help with these.  If this chg
> is necessary can I add it to a web.xml file in
> C:\Apache\Tomcat\webapps\velexample\WEB-INF\web.xml?
>
> All help appreciated, looking fwd to coming up to speed
>
> Mike
>
>
>
>
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>
>
>
>
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