Re: RMI in Tomcat - last try
hihi Nikola, where are you placing your JAR files? are any in TC/commons/lib or TC/shared/lib? try placing everything together, just as a test. put *all* your classes and JAR files under TC/commons for example and give it a try... they should be able to see each other if they are at the same classloading hierarchy level... this is what i suspect your problem is http://struts.apache.org/userGuide/configuration.html#config_add hth, woodchuck --- Nikola Milutinovic [EMAIL PROTECTED] wrote: Hi all. Me and the team have given up on RMI and went to RPC, but I thought I'd make one last educational attempt. Is anyone using RMI in TC where TC is acting as a RMI client to a remote RMI, general-purpose, server? I have seen tons of (rather old) examples of Applet being a RMI client and they do not help me one bit. To remind the group of my problems, I'll recap. I have a working RMI client and server packages, plus command line test client application which uses RMI client lib successfully against the server. When the same lib is used in Tomcat from a servlet, it throws ClassCastException. Further investigation has shown that the class that Servlet gets from RMI subsystem implements the desired interface, to which it is being cast. It also showed that the classloader of the class was RMI ClassLoader, while other classes in the servlet, including servlet itself werefrom TC's ClassLoader. It lead me to believe that *that* is the source of the problem. It has occured to me that, since TC web application has several classloaders, bound into a hierarchy, maybe RMI classloader should be somehow introduced into it. QUESTIONS Am I on the right track? If yes, how do I bind in RMI ClassLoader into TC's ClassLoader hierarchy? And, lastly, who should do it - Servlet or RMI client? The last question is more a design question, but it could also be a feasibility question, too. Can RMI client detect a classloader it should bind into? It could be dome from the Servlet, but I would like to have a general purpose Servlet that would be oblivious of underlying implementation. I thought that at least JBoss developers would have something to say on this question, since, as I recall, JBoss uses or has been using a lot of RMI. There was one article or was it JBoss docs, which explained some problems of classloading, which were very similar to mine. I don't recall those docs saying anything to solve the problem in TC. Nix. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] __ Discover Yahoo! Stay in touch with email, IM, photo sharing and more. Check it out! http://discover.yahoo.com/stayintouch.html - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: RMI in Tomcat - last try
Woodchuck wrote: hihi Nikola, where are you placing your JAR files? are any in TC/commons/lib or TC/shared/lib? try placing everything together, just as a test. put *all* your classes and JAR files under TC/commons for example and give it a try... they should be able to see each other if they are at the same classloading hierarchy level... this is what i suspect your problem is http://struts.apache.org/userGuide/configuration.html#config_add Hi Woodchuck. I forgot to mention that, when I place ALL classes inside WEB-INF/classes, including the *_Stub classes, then it works. I guess in that case TC's classloader picks up the classes before RMI classloader and, since it is teh same CL, it works. This solution is a patch, as far as I am concerned, since copying all those classes to clients classpath (TC's webapp WEB-INF/classes) is actually what RMI is supposed to root out. If I cannot have server classes in RMI codebase (one place), then I can as well go use RPC or pure sockets/serialization. All of this still makes me believe that somehow RMI classloader should be introduced into TC's CL hierarchy. Or maybe install JBoss altogehter? Nix. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: RMI on Tomcat
Anybody has any ideas on this, Thanks again, Sanjay --- Sanjay [EMAIL PROTECTED] wrote: I am trying to set a RMI-IIOP server on Tomcat. Getting some issues. MY RMI Server works fine if I start it standalone- without Tomcat. I think have been able to set security codebase etc correctly. Environment : Tomcat 4.1, Win NT4, JDK1.4.1 I have issues when I start the RMIServer in Tomcat. I can start tomcat in the secured mode and start my RMI server successfully but then I run into two different kinds of problems: 1. If I run the client from the same m/c as Tomcat then I can do the lookup and also do the PortableRemoteObject.narrow(). But a client on a difffrent m/c (in the same LAN) can not execute the narrow() - gives classcast Exception. 2. I can not execute a method on the server (even when I get the narrow() to succeeed). Gives error: java.rmi.NoSuchObjectException: CORBA OBJECT_NOT_EXIST 1398079692 No Has anyone done this. Any ideas suggestions would be welcome Thanks Sanjay __ Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month! http://sbc.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: RMI on Tomcat
You may problems using RMI if tomcat is installed in a directory containing whitespace. (e.g. C:\Program Files\Apache Group\...). -Original Message- From: Sanjay [mailto:[EMAIL PROTECTED] Sent: 09 July 2003 14:02 To: Tomcat Users List Subject: Re: RMI on Tomcat Anybody has any ideas on this, Thanks again, Sanjay --- Sanjay [EMAIL PROTECTED] wrote: I am trying to set a RMI-IIOP server on Tomcat. Getting some issues. MY RMI Server works fine if I start it standalone- without Tomcat. I think have been able to set security codebase etc correctly. Environment : Tomcat 4.1, Win NT4, JDK1.4.1 I have issues when I start the RMIServer in Tomcat. I can start tomcat in the secured mode and start my RMI server successfully but then I run into two different kinds of problems: 1. If I run the client from the same m/c as Tomcat then I can do the lookup and also do the PortableRemoteObject.narrow(). But a client on a difffrent m/c (in the same LAN) can not execute the narrow() - gives classcast Exception. 2. I can not execute a method on the server (even when I get the narrow() to succeeed). Gives error: java.rmi.NoSuchObjectException: CORBA OBJECT_NOT_EXIST 1398079692 No Has anyone done this. Any ideas suggestions would be welcome Thanks Sanjay __ Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month! http://sbc.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: RMI on Tomcat
I have it set in a simple directory called tomcat. Thanks Sanjay --- Bodycombe, Andrew [EMAIL PROTECTED] wrote: You may problems using RMI if tomcat is installed in a directory containing whitespace. (e.g. C:\Program Files\Apache Group\...). -Original Message- From: Sanjay [mailto:[EMAIL PROTECTED] Sent: 09 July 2003 14:02 To: Tomcat Users List Subject: Re: RMI on Tomcat Anybody has any ideas on this, Thanks again, Sanjay --- Sanjay [EMAIL PROTECTED] wrote: I am trying to set a RMI-IIOP server on Tomcat. Getting some issues. MY RMI Server works fine if I start it standalone- without Tomcat. I think have been able to set security codebase etc correctly. Environment : Tomcat 4.1, Win NT4, JDK1.4.1 I have issues when I start the RMIServer in Tomcat. I can start tomcat in the secured mode and start my RMI server successfully but then I run into two different kinds of problems: 1. If I run the client from the same m/c as Tomcat then I can do the lookup and also do the PortableRemoteObject.narrow(). But a client on a difffrent m/c (in the same LAN) can not execute the narrow() - gives classcast Exception. 2. I can not execute a method on the server (even when I get the narrow() to succeeed). Gives error: java.rmi.NoSuchObjectException: CORBA OBJECT_NOT_EXIST 1398079692 No Has anyone done this. Any ideas suggestions would be welcome Thanks Sanjay __ Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month! http://sbc.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] __ Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month! http://sbc.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: RMI and Tomcat
You don't want your remote application's classes to be resident in the access webapp. I'd suggest we go back to the original problem and try to solve that; take the application classes out of examples/WEB-IF/classes. (Aside-- While you're at it, it's worth taking an hour or two to download Ant, look at the Application Developer docs and sample build.xml included in the Tomcat distribution, and set up your own webapp to get out of /examples. It's not that hard, and it makes development much smoother!) The original problem looks like the RMIClassLoader can't find the code for MyAppStarter. Are you passing or returning an instance of MyAppStarter as an argument in the RMI call to the server app, or is the server object an instance of MyAppStarter? In either case, do you have the codebase property set on the RMI server JVM? The system property java.rmi.server.codebase needs to refer to a set of URLs from which classes used in the RMI call can be downloaded. By extension, you need to have those classes available on some sort of a server, typically ftp or http. Tomcat'll do it! If the codebase is set properly and the download files are available, a webapp in Tomcat can execute RMI calls on a remote object. There's one not-so-small detail left, though; the class loader (RMIClassLoader) that wants to load the remote bytecode will refuse to work if there's no security manager, so you need to run Tomcat with the security manager enabled, which will also require setting up the security.properties file to allow whatever permissions your application needs. See the Security Manager HOWTO in the Tomcat docs. In your case, you didn't get RMIClassLoader's exception, so I suspect the codebase problem. Note that it's a little awkward to set the codebase on a webapp, so it's difficult (i.e. possible, but not elegant and not portable) to export remote objects from a webapp. I'd say this isn't a Tomcat limitation, so much as a case of the servlet spec not being written with RMI in mind. If you need to support callbacks from the remote application, you need to employ a proxy strategy. You might want to look at jini.org for more information on the proxy concept. Greg Trasuk, President StratusCom Manufacturing Systems Inc. - We use information technology to solve business problems on your plant floor. http://stratuscom.ca -Original Message- From: news [mailto:[EMAIL PROTECTED]]On Behalf Of Bill Barker Sent: November 27, 2002 00:47 To: [EMAIL PROTECTED] Subject: Re: RMI and Tomcat This is starting to look like a classic case of bad design. But to get your app working, try adding servlet.jar to the CLASSPATH of rmiregistry. Sarah L. Moore [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Well, I just moved the application classes over to the examples/WEB-INF/classes directory and re-ran my servlet. I get a slightly different message: java.rmi.ServerError: Error occurred in server thread; nested exception is: java.lang.NoClassDefFoundError: javax/servlet/ServletRequest From the output of my application, it looks as though the application begins to run, but it is the servlet that is throwing the above exception upon the call to the RMI application. I did a search for servlet.jar, and it looks as though it is where it should be in the Tomcat directory structure (i.e. catalina_home/common/lib). Any other advice? I'm at a total loss. Thanks again! Sarah At 11:30 AM 11/27/2002 +0800, you wrote: Sorry, did not correctly see which class it was complaining about. Try and move MyApplicationStarter to the said directories. Sarah L. Moore wrote: Thanks for your reply. My servlet class is in examples/WEB-INF/classes. If I comment out the RMI step, the servlet runs fine, so I'm left to think that the servlet location, etc. are OK, but something relating to RMI is the culprit. At 11:01 AM 11/27/2002 +0800, you wrote: Cannot allocate servlet instance for path /examples/servlet/MyServlet means that it can't find the requested servlet for that web app which implies that your servlet class isn't where it should be. Servlets classes go in /examples/WEB-INF/classes or /examples/WEB-INF/lib for jar packages. Sarah L. Moore wrote: Hello all. I am new to Tomcat, and am having a problem with RMI. I have a Java application that basically just sits on my server waiting for a data vector to be passed to it from my servlet. However, when I run the servlet and try to have it pass the data to the application through RMI, I get: javax.servlet.ServletException: Cannot allocate servlet instance for path /examples/servlet/MyServlet java.lang.NoClassDefFoundError: MyApplicationStarter The application resides in a directory on the root of the c drive (i.e. c:\MyApplication), and the servlet I am working with is in catalina_home/webapps/examples. Could it be that my problem is due to the fact tha
Re: RMI and Tomcat
Cannot allocate servlet instance for path /examples/servlet/MyServlet means that it can't find the requested servlet for that web app which implies that your servlet class isn't where it should be. Servlets classes go in /examples/WEB-INF/classes or /examples/WEB-INF/lib for jar packages. Sarah L. Moore wrote: Hello all. I am new to Tomcat, and am having a problem with RMI. I have a Java application that basically just sits on my server waiting for a data vector to be passed to it from my servlet. However, when I run the servlet and try to have it pass the data to the application through RMI, I get: javax.servlet.ServletException: Cannot allocate servlet instance for path /examples/servlet/MyServlet java.lang.NoClassDefFoundError: MyApplicationStarter The application resides in a directory on the root of the c drive (i.e. c:\MyApplication), and the servlet I am working with is in catalina_home/webapps/examples. Could it be that my problem is due to the fact that Tomcat can't locate the classes that are in the c:\MyApplication directory? How can I remidy that problem, if that is, in fact, the problem. I am running Tomcat 4 with jdk 1.3.1 on Win2K. Please let me know if you need any more information. Any help would be appreciated. Thanks! Sarah -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: RMI and Tomcat
Thanks for your reply. My servlet class is in examples/WEB-INF/classes. If I comment out the RMI step, the servlet runs fine, so I'm left to think that the servlet location, etc. are OK, but something relating to RMI is the culprit. At 11:01 AM 11/27/2002 +0800, you wrote: Cannot allocate servlet instance for path /examples/servlet/MyServlet means that it can't find the requested servlet for that web app which implies that your servlet class isn't where it should be. Servlets classes go in /examples/WEB-INF/classes or /examples/WEB-INF/lib for jar packages. Sarah L. Moore wrote: Hello all. I am new to Tomcat, and am having a problem with RMI. I have a Java application that basically just sits on my server waiting for a data vector to be passed to it from my servlet. However, when I run the servlet and try to have it pass the data to the application through RMI, I get: javax.servlet.ServletException: Cannot allocate servlet instance for path /examples/servlet/MyServlet java.lang.NoClassDefFoundError: MyApplicationStarter The application resides in a directory on the root of the c drive (i.e. c:\MyApplication), and the servlet I am working with is in catalina_home/webapps/examples. Could it be that my problem is due to the fact that Tomcat can't locate the classes that are in the c:\MyApplication directory? How can I remidy that problem, if that is, in fact, the problem. I am running Tomcat 4 with jdk 1.3.1 on Win2K. Please let me know if you need any more information. Any help would be appreciated. Thanks! Sarah -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: RMI and Tomcat
Sorry, did not correctly see which class it was complaining about. Try and move MyApplicationStarter to the said directories. Sarah L. Moore wrote: Thanks for your reply. My servlet class is in examples/WEB-INF/classes. If I comment out the RMI step, the servlet runs fine, so I'm left to think that the servlet location, etc. are OK, but something relating to RMI is the culprit. At 11:01 AM 11/27/2002 +0800, you wrote: Cannot allocate servlet instance for path /examples/servlet/MyServlet means that it can't find the requested servlet for that web app which implies that your servlet class isn't where it should be. Servlets classes go in /examples/WEB-INF/classes or /examples/WEB-INF/lib for jar packages. Sarah L. Moore wrote: Hello all. I am new to Tomcat, and am having a problem with RMI. I have a Java application that basically just sits on my server waiting for a data vector to be passed to it from my servlet. However, when I run the servlet and try to have it pass the data to the application through RMI, I get: javax.servlet.ServletException: Cannot allocate servlet instance for path /examples/servlet/MyServlet java.lang.NoClassDefFoundError: MyApplicationStarter The application resides in a directory on the root of the c drive (i.e. c:\MyApplication), and the servlet I am working with is in catalina_home/webapps/examples. Could it be that my problem is due to the fact that Tomcat can't locate the classes that are in the c:\MyApplication directory? How can I remidy that problem, if that is, in fact, the problem. I am running Tomcat 4 with jdk 1.3.1 on Win2K. Please let me know if you need any more information. Any help would be appreciated. Thanks! Sarah -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: RMI and Tomcat
Well, I just moved the application classes over to the examples/WEB-INF/classes directory and re-ran my servlet. I get a slightly different message: java.rmi.ServerError: Error occurred in server thread; nested exception is: java.lang.NoClassDefFoundError: javax/servlet/ServletRequest From the output of my application, it looks as though the application begins to run, but it is the servlet that is throwing the above exception upon the call to the RMI application. I did a search for servlet.jar, and it looks as though it is where it should be in the Tomcat directory structure (i.e. catalina_home/common/lib). Any other advice? I'm at a total loss. Thanks again! Sarah At 11:30 AM 11/27/2002 +0800, you wrote: Sorry, did not correctly see which class it was complaining about. Try and move MyApplicationStarter to the said directories. Sarah L. Moore wrote: Thanks for your reply. My servlet class is in examples/WEB-INF/classes. If I comment out the RMI step, the servlet runs fine, so I'm left to think that the servlet location, etc. are OK, but something relating to RMI is the culprit. At 11:01 AM 11/27/2002 +0800, you wrote: Cannot allocate servlet instance for path /examples/servlet/MyServlet means that it can't find the requested servlet for that web app which implies that your servlet class isn't where it should be. Servlets classes go in /examples/WEB-INF/classes or /examples/WEB-INF/lib for jar packages. Sarah L. Moore wrote: Hello all. I am new to Tomcat, and am having a problem with RMI. I have a Java application that basically just sits on my server waiting for a data vector to be passed to it from my servlet. However, when I run the servlet and try to have it pass the data to the application through RMI, I get: javax.servlet.ServletException: Cannot allocate servlet instance for path /examples/servlet/MyServlet java.lang.NoClassDefFoundError: MyApplicationStarter The application resides in a directory on the root of the c drive (i.e. c:\MyApplication), and the servlet I am working with is in catalina_home/webapps/examples. Could it be that my problem is due to the fact that Tomcat can't locate the classes that are in the c:\MyApplication directory? How can I remidy that problem, if that is, in fact, the problem. I am running Tomcat 4 with jdk 1.3.1 on Win2K. Please let me know if you need any more information. Any help would be appreciated. Thanks! Sarah -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: RMI and Tomcat
This is starting to look like a classic case of bad design. But to get your app working, try adding servlet.jar to the CLASSPATH of rmiregistry. Sarah L. Moore [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Well, I just moved the application classes over to the examples/WEB-INF/classes directory and re-ran my servlet. I get a slightly different message: java.rmi.ServerError: Error occurred in server thread; nested exception is: java.lang.NoClassDefFoundError: javax/servlet/ServletRequest From the output of my application, it looks as though the application begins to run, but it is the servlet that is throwing the above exception upon the call to the RMI application. I did a search for servlet.jar, and it looks as though it is where it should be in the Tomcat directory structure (i.e. catalina_home/common/lib). Any other advice? I'm at a total loss. Thanks again! Sarah At 11:30 AM 11/27/2002 +0800, you wrote: Sorry, did not correctly see which class it was complaining about. Try and move MyApplicationStarter to the said directories. Sarah L. Moore wrote: Thanks for your reply. My servlet class is in examples/WEB-INF/classes. If I comment out the RMI step, the servlet runs fine, so I'm left to think that the servlet location, etc. are OK, but something relating to RMI is the culprit. At 11:01 AM 11/27/2002 +0800, you wrote: Cannot allocate servlet instance for path /examples/servlet/MyServlet means that it can't find the requested servlet for that web app which implies that your servlet class isn't where it should be. Servlets classes go in /examples/WEB-INF/classes or /examples/WEB-INF/lib for jar packages. Sarah L. Moore wrote: Hello all. I am new to Tomcat, and am having a problem with RMI. I have a Java application that basically just sits on my server waiting for a data vector to be passed to it from my servlet. However, when I run the servlet and try to have it pass the data to the application through RMI, I get: javax.servlet.ServletException: Cannot allocate servlet instance for path /examples/servlet/MyServlet java.lang.NoClassDefFoundError: MyApplicationStarter The application resides in a directory on the root of the c drive (i.e. c:\MyApplication), and the servlet I am working with is in catalina_home/webapps/examples. Could it be that my problem is due to the fact that Tomcat can't locate the classes that are in the c:\MyApplication directory? How can I remidy that problem, if that is, in fact, the problem. I am running Tomcat 4 with jdk 1.3.1 on Win2K. Please let me know if you need any more information. Any help would be appreciated. Thanks! Sarah -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: RMI and Tomcat
I have made two posts to the list about similar problems with 3.2.1 and using JNDI/RMI (EJB's) and not figured much out. Not having the time to delve further I backed off to Tomcat 3.1. You may try that for the interim. Any feedback from any of the implementors that would help us start to figure this out? -Original Message- From: Gerard BORREILL [mailto:[EMAIL PROTECTED]] Sent: Friday, March 09, 2001 12:01 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: RMI and Tomcat Hello, Sorry, but I have not found any answer in the mailing list archive. I am using Tomcat 3.2.1. I have a web application based on servlets that communicates with a server using RMI, so I have set the SecurityManager when starting Tomcat. I get a java.lang.ClassNotFoundException on a class that is under the WEB-INF/classes/ directory, or in *.jar file located in WEB-INF/lib. The class file is at the right place. I have made two attempts: 1) put every classes in jar files. I have 2 jar files. myApplication.jar and com.jar. The class not found is in the com.jar, and the servlet class is in the myApplication.jar file. 2) expand those .jar files under WEB-INF/classes, The class file not found is not in the same package as the servlet class. (com.xxx and fr.xxx.). I do not understand why tomcat is not able to find this class. I have no SecurityException.Why is it finding my servlet and performing it, and not my com.xx classes. I think it is a matter of class loader (?) How can I know the class loader used by tomcat for my application ? Do I need this ? Does anyone have a solution ? In advance thank you. Grard - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
Re: RMI and Tomcat
I have made two posts to the list about similar problems with 3.2.1 and using JNDI/RMI (EJB's) and not figured much out. Not having the time to delve further I backed off to Tomcat 3.1. You may try that for the interim. Any feedback from any of the implementors that would help us start to figure this out? I've also reported this as "it makes no sense" that it can find a JSP bean in the classpath, but if that bean calls other classes and those classes call others, things get screwed up, as if those other beans have forgotten the classloader/classpath that was in effect at the time the original JSP page bean was referenced. I have found a temporary solution that will likely help you. In your Tomcat startup file, put those two jar files in your CLASSPATH so that when Tomcat itself starts up it will also have the same classpath that your webapp is using. I just set the CLASSPATH in Tomcat's startup script to use te WEB-INF/classes and each jar in my WEB-INF/lib. That does the trick, though it's certainly not what I'd expect, and it would be worse if there was some sort of conflict between jars/classes in two webapps running under the same tomcat process. David - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
Re: rmi amd tomcat
wendy wang wrote: Hi there, Does anyone know how to set up tomcat3.2.1 to run servlet which look up remote object using rmi? Wendy There is nothing special required in the Tomcat setup. A servlet talking to a RMI object is just like an application doing the same. I would suggest that you write a "Bean" type component to do the actual RMI so you can test it without a servlet interface first. -- WBB - [EMAIL PROTECTED] Java Cert mock exams http://www.lanw.com/java/javacert/ Author of Java Developer's Guide to Servlets and JSP ISBN 0-7821-2809-2 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
