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From Mark <ma...@bellsouth.net>
Subject Re: TC 4.0 newbie - servlet app won't run (correction)
Date Mon, 26 Nov 2001 18:18:23 GMT
Correction, using POST results in a 405-Resource not allowed due to the
HelloWorldExample servlet not implementing doPost().  Others do and work
fine with POST. My apologies.


At 01:02 PM 11/26/2001 -0500, you wrote:
>The examples you mentioned are the JSPs examples. I realize JSPs compile to
>servlets, but what about the straight up HelloWorldExample servlet?  I
>didn't see mapping for that or the other servlet (vs. JSP) examples in the
>web.xml.  Being a newbie, I could very well be missing something so please
>bear with me (again).
>
>BTW - I've fiddled with the example servlet index.html to use FORM vs.
>"href=../servlet/abc" method of running servlets.  POST always results in a
>404.  GET does however work.  
>
>Example:
>
>   <FORM ACTION="../servlet/HelloWorldExample" method="POST">  - doen't work
>   <FORM ACTION="../servlet/HelloWorldExample" method="GET">   - works.
>
>Mark
>
>
>
>At 09:30 AM 11/26/2001 -0800, you wrote:
>>Okay, Mark, Part II, I want to make sure we are communicating properly
>>before going further.  No sense wasting time.  Your note is not correct
>>about at least somethings -- for example (no pun intended):
>>
>>The web.xml for examples/WEB-INF/web.xml DOES have servlet mappings.  So, I
>>am not sure what you are looking at.  The servlet SnoopServlet has the
>>mappings to the patterns /snoop and *.snp under the name "snoop".  The
>>servlet servletToJsp which has the same name, i.e. "servletToJsp," has a
>>mapping to the pattern /servletToJsp.
>>
>>Micael
>>
>>
>>-----Original Message-----
>>From: Mark <markd@bellsouth.net>
>>To: Tomcat Users List <tomcat-user@jakarta.apache.org>
>>Date: Monday, November 26, 2001 7:00 AM
>>Subject: Re: TC 4.0 newbie - servlet app won't run
>>
>>
>>>Thanks for your reply Scott, and thanks to your and Micael's responses I
>>>_believe_ I understand the relationship between the servlet naming/mapping
>>>and the associated html.  As Micael noted, one could put "pudding" in the
>>>url-pattern as long as the html was setup as ACTION="pudding".  But... how
>>>do the example servlets work when they don't seem to have any servlet
>>>mapping in the ..\examples\WEB-INF\web.xml?
>>>
>>>Even after all the advice, I *STILL* can't get my app to run - I still get
>>>a 404 error on the servlet. This seems like such a simple issue but I can
>>>NOT get past it.  I've even gone as far as downloading Tomcat 3.3, with the
>>>same result. Again, I know Tomcat is parsing my web.xml, because if I
>>>intentionally make a typo, the parser complains when Tomcat is started.
>>>
>>>To recap where I am:
>>>
>>>(a)  I have myservlet.class in the
>>>$CATALINA_HOME\webapps\myapp\WEB-INF\classes
>>>     directory.  The servlet has no associated package.
>>>(b)  The html is <FORM ACTION="/servlet/myservlet" method="POST">
>>>(c)  My $CATALINA_HOME\webapps\myapp\WEB-INF\web.xml is as follows:
>>>
>>>     <?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>
>>>         <servlet>
>>>             <servlet-name>myservlet</servlet-name>
>>>             <servlet-class>myservlet</servlet-class>
>>>         </servlet>
>>>         <servlet-mapping>
>>>             <servlet-name>myservlet</servlet-name>
>>>             <url-pattern>/servlet/myservlet</url-pattern>
>>>         </servlet-mapping>
>>>     </web-app>
>>>
>>>
>>>Am I still missing something?  This is driving me berserk...
>>>
>>>TIA. Mark.
>>>
>>>
>>>
>>>At 12:22 AM 11/22/2001 -0500, you wrote:
>>>>Mark,
>>>>
>>>>The servlet tag is used to assign a name to a particular servlet class
>>>>file.
>>>>
>>>> <servlet>
>>>>           <servlet-name>myservlet</servlet-name>
>>>>           <servlet-class>myservlet</servlet-class>
>>>>       </servlet>
>>>>
>>>>This would attempt to assign the name 'myservlet' to the class
>>>>'myservlet.class.'
>>>>
>>>>The servlet-mapping tag defines the pattern or 'location' of a named
>>>>servlet from the root of your context. This means that ....
>>>>
>>>><servlet-mapping>
>>>>           <servlet-name>myservlet</servlet-name>
>>>>           <url-pattern>/classes</url-pattern>
>>>>       </servlet-mapping>
>>>>
>>>>if this were the ROOT context, this would map your servlet at /classes
>>>>and your form action would need to be defined as
>>>>
>>>><FORM ACTION="/classes" method="POST">
>>>>
>>>>A more common mapping for servlets is
>>>>
>>>><servlet-mapping>
>>>>           <servlet-name>myservlet</servlet-name>
>>>>           <url-pattern>/servlet/myservlet</url-pattern>
>>>>       </servlet-mapping>
>>>>
>>>>which would have a coresponding form tag of
>>>>
>>>><FORM ACTION="/servlet/myservlet" method="POST">
>>>>
>>>>
>>>>~Scott
>>>>
>>>>Mark wrote:
>>>>
>>>>>I installed Tomcat 4.0.1 under Win 2k using JDK 1.3 and able to run the
>>>>>example servlets, but not my own.  My html displays and I can execute
my
>>>>>JSPs, but a POST to a servlet does not work (this app has run under Forte
>>>>>and VA Java in the past).   I get a 404 error with "the requested
>>resource
>>>>>(/myservlet) is not available". Since the examples work, I have to assume
>>>>>it's something in my configuration. Any help figuring out why the servlet
>>>>>won't run would be *greatly* appreciated.  I suspect it's something
>>>>>simple/braindead on my part.
>>>>>
>>>>>
>>>>>o  My directory structure for the app:
>>>>>   TomcatHome
>>>>>        |
>>>>>        +--webapps
>>>>>              |
>>>>>              +--myapp\.jsp, .html .gif
>>>>>                 |
>>>>>                 +--WEB-INF\web.xml
>>>>>                       |
>>>>>                       +--classes\.class files
>>>>>
>>>>>
>>>>>o  My html POST stmt. I've tried various path prefixes to myservlet, eg
>>>
>>>>>   "classes/myservlet".  As with the Tomcat examples, this servlet has
no
>>>>>   package:
>>>>>
>>>>>    <FORM ACTION="/myservlet" method="POST">
>>>>>
>>>>>
>>>>>o  My web.xml - I know Tomcat's seeing/parsing this because if I
>>>deliberately
>>>>>   make a typo I get an error upon startup:
>>>>>
>>>>>     <?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>
>>>>>       <!-- Define servlets that are included in the application -->
>>>>>       <servlet>
>>>>>           <servlet-name>myservlet</servlet-name>
>>>>>           <servlet-class>myservlet</servlet-class>
>>>>>       </servlet>
>>>>>       <servlet-mapping>
>>>>>           <servlet-name>myservlet</servlet-name>
>>>>>           <url-pattern>/classes</url-pattern>
>>>>>       </servlet-mapping>
>>>>>    </web-app>
>>>>>
>>>>>
>>>>>o  Update to server.xml
>>>>>
>>>>>   <Context path="/myapp" docBase="myapp" debug="0">
>>>>>       <Logger className="org.apache.catalina.logger.FileLogger"
>>>>>               prefix="myapp_log." suffix=".txt"
>>>>>               timestamp="true"/>
>>>>>   </Context>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
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>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
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>>>>
>>>
>>>
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>>
>>
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>
>
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