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Java Forum / General / April 2007Tomcat 5 runs what Tomcat 4 doesn't after modifying WEB.XML
Hi, WEB.XML file was modified by adding something like: <servlet> <servlet-name></servlet-name> <servlet-class></servlet-class> <load-on-startup></load-on-startup> </servlet> <servlet-mapping> <servlet-name></servlet-name> <url-pattern></url-pattern> </servlet-mapping> Since this modification, my application stopped running on Tomcat 4 but runs well on Tomcat 5. Where can the problem be? I am not an expert in Tomcat management, but can you point me out to a possible reason? Is it possibly the declaration as: <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd"> vunet.us@gmail.com wrote : > Hi, > WEB.XML file was modified by adding something like: [quoted text clipped - 17 lines] > "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" > "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd"> Well an empty url mapping probably matches everything. Since every other setting is also empty, there is nothing for TomCat 4 to map to. TomCat 5 probably ignores the empty mapping, with possibly an error message in the logs. Why would you want an empty mapping?  SignatureWojtek :-) > vunet...@gmail.com wrote : > [quoted text clipped - 30 lines] > -- > Wojtek :-) it's not empty, I just did not specify servlet name. do you need to see stuff in there? vunet.us@gmail.com wrote : >> vunet...@gmail.com wrote : >> [quoted text clipped - 28 lines] > it's not empty, I just did not specify servlet name. do you need to > see stuff in there? You did not specify ANYTHING. It is all empty. Every setting. The mapping goes as follows: - a url. This is what the browser sends to the server - Tomcat finds the url in its list - Tomcat matches the <servlet-name> parameters between the <servlet-mapping> and <servlet> - Tomcat either instantiates the <servlet-class> or finds it in its cache. So if there is nothing there, then Tomcat cannot possibly run anything. SignatureWojtek :-) > vunet...@gmail.com wrote : > [quoted text clipped - 45 lines] > -- > Wojtek :-) if you wish: <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd"> <web-app> ........ <servlet> <servlet-name>myServlet</servlet-name> <servlet-class>direct.myServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>myServlet</servlet-name> <url-pattern>/servlet/direct.myServlet</url-pattern> </servlet-mapping> ........ </web-app> > if you wish: > (finally provides necessary information) Don't act like you're doing him a huge favor. You asked for help, but the information you originally gave was not accurate. How can you expect accurate information when you don't provide accurate information? It's yourself for whom you do the favor; it's if /you/ wish for good answers. SignatureLew Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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