error loading class in $CATALINA_BASE/shared/classes
Hello, I am just starting out with Tomcat 5 and I am experimenting with loading classes from a servlet. I have placed my .class files in $CATALINA_BASE/shared/classes. My servlet tries to instantiate a class located in $CATALINA_BASE/shared/classes I get javax.servlet.ServletException: Servlet execution threw an exception root cause java.lang.IllegalAccessError: tried to access class from class Y I discovered even if I delete the .class files from CATALINA_BASE/shared/classes I still get this error. Is there a security setup required to permit this? Thanks - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
loading class
I cant't load class in Tomcat. For example code Class.forName (xxx); throws exception. what to do for that to work? I've tried to put xxx.class file into WEB-INF directories,but with no success. Thanks for advise, M. Strnky o automobilech, novinky, autobazary, nov auta, psluenstv, pojitn aut... http://automoto.volny.cz -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: loading class
put it in the WEB-INF/classes directory and your serlvet should be able to find it. Charlie -Original Message- From: Marek Majtan [mailto:[EMAIL PROTECTED]] Sent: Thursday, October 17, 2002 12:13 PM To: [EMAIL PROTECTED] Subject: loading class I cant't load class in Tomcat. For example code Class.forName (xxx); throws exception. what to do for that to work? I've tried to put xxx.class file into WEB-INF directories,but with no success. Thanks for advise, M. Strnky o automobilech, novinky, autobazary, nov auta, psluenstv, pojitn aut... http://automoto.volny.cz -- 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: tomcat 4.0.3 servlet having problem loading class via rmi ?
Howdy, 1st thing that comes to mind from looking at the stack trace, not having tried tomcat-JINI connectivity: is that file (com.sun.jini.reggie.RegistrarProxy) in your runtime classpath? It should be in the /WEB-INF/lib or /WEB-INF/classes (or one of the common lib/classes directories). Usually ClassNotFoundExceptions are fairly straightforward... Yoav Shapira Millennium ChemInformatics -Original Message- From: java guru [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 06, 2002 5:21 PM To: [EMAIL PROTECTED] Subject: tomcat 4.0.3 servlet having problem loading class via rmi ? Hi., I am trying to access a JINI service thru my servlet.. inspite of following Security Manager, Policy file and setting codebase etc, tomcat 4.0.3 repeatedly give following excption. The JINI service itself is working fine and other standalone clients can access it. Read somewhere that the protocol handler of tomcat had problem but that was two years back.. Any insight to this would be of great help. Thanks srini *** java.lang.ClassNotFoundException: com.sun.jini.reggie.RegistrarProxy at java.net.URLClassLoader$1.run(URLClassLoader.java:198) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:186) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:262) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:322) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:207) at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:427) at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:159) at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:629) at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:257) at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java: 200) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1503) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1425) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:161 6) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1264) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:322) at java.rmi.MarshalledObject.get(MarshalledObject.java:135) at net.jini.discovery.IncomingUnicastResponse.init(IncomingUnicastRespon se.j ava:78) at net.jini.discovery.LookupDiscovery$UnicastDiscoverer.run(LookupDiscover y.ja va:322) = Thanks and have great day srini ___ _ Everything you always wanted to know about cars and bikes,now at: http://in.autos.yahoo.com -- To unsubscribe, e-mail: mailto:tomcat-user- [EMAIL PROTECTED] For additional commands, e-mail: mailto:tomcat-user- [EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
tomcat 4.0.3 servlet having problem loading class via rmi ?
Hi., I am trying to access a JINI service thru my servlet.. inspite of following Security Manager, Policy file and setting codebase etc, tomcat 4.0.3 repeatedly give following excption. The JINI service itself is working fine and other standalone clients can access it. Read somewhere that the protocol handler of tomcat had problem but that was two years back.. Any insight to this would be of great help. Thanks srini *** java.lang.ClassNotFoundException: com.sun.jini.reggie.RegistrarProxy at java.net.URLClassLoader$1.run(URLClassLoader.java:198) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:186) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:262) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:322) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:207) at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:427) at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:159) at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:629) at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:257) at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:200) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1503) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1425) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1616) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1264) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:322) at java.rmi.MarshalledObject.get(MarshalledObject.java:135) at net.jini.discovery.IncomingUnicastResponse.init(IncomingUnicastResponse.java:78) at net.jini.discovery.LookupDiscovery$UnicastDiscoverer.run(LookupDiscovery.java:322) = Thanks and have great day srini Everything you always wanted to know about cars and bikes,now at: http://in.autos.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: [repost] loading class files
On Mon, 26 Nov 2001, Frank Lawlor wrote: Date: Mon, 26 Nov 2001 13:08:02 -0600 From: Frank Lawlor [EMAIL PROTECTED] Reply-To: Tomcat Users List [EMAIL PROTECTED], [EMAIL PROTECTED] To: Tomcat (E-mail) [EMAIL PROTECTED] Subject: Re: [repost] loading class files Note on the other stuff: Classes used on the server side should be in a package structure under WEB-INF/classes to work correctly. JSPs, static content, and client-side applets should all be outside the WEB-INF folder for proper operation. This is defined in the spec and is required for all applications conforming to it. Hope this clears some mystery. --David Smith I cannot find any place in the spec that says that JSPs, etc. cannot be under WEB-INF. I have seen many suggestions that this is a good place to put them to prevent direct access. In what way doesn't this provide proper operation. You can indeed put JSP pages inside the WEB-INF directory. However, such pages will *only* be accessible via a RequestDispatcher.forward() or RequestDispatcher.include() call, not direct requests from clients. This technique is commonly used in MVC-based web applications to avoid the possibility that users can type a URL of such a page directly. Frank Lawlor Athens Group, Inc. (512) 345-0600 x151 Athens Group, an employee-owned consulting firm integrating technology strategy and software solutions. Craig -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Re: [repost] loading class files
You're right. The spec does not say jsps can not be stored under WEB-INF, but it does say and I quote the spec: No file contained in the WEB-INF directory may be served directly to a client by the container -- Servlet 2.3 spec pg 60 Given that, what good is storing a .jsp (or .gif, jpg, pdf, etc, ...) file in WEB-INF if the client can't request it? IMHO, files the client directly request should be outside the WEB-INF directory. Individual mileage may vary though. --David On Monday 26 November 2001 02:08 pm, you wrote: Note on the other stuff: Classes used on the server side should be in a package structure under WEB-INF/classes to work correctly. JSPs, static content, and client-side applets should all be outside the WEB-INF folder for proper operation. This is defined in the spec and is required for all applications conforming to it. Hope this clears some mystery. --David Smith I cannot find any place in the spec that says that JSPs, etc. cannot be under WEB-INF. I have seen many suggestions that this is a good place to put them to prevent direct access. In what way doesn't this provide proper operation. Frank Lawlor Athens Group, Inc. (512) 345-0600 x151 Athens Group, an employee-owned consulting firm integrating technology strategy and software solutions. -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Re: [repost] loading class files
As Craig indicated in a message earlier this morning, the good of storing JSPs (in particular) under WEB-INF is if you want to enforce that they are only available via some kind of dispatching servlet which does a RequestDispatcher.forward or .include. In other words, if the application architecture is using something like Struts in which the direct execution of some JSPs will fail because they require other processing to have previously occurred, then you can make sure they're not accidentally served directly by putting them under WEB-INF. Putting images under WEB-INF doesn't make much sense, as those are all, for the most part, implicitly requested by a browser when parsing a page's HTML. So almost all requests for images are served directly to a client. Hope that's clear, Donnie [EMAIL PROTECTED] 11/27/01 10:35AM You're right. The spec does not say jsps can not be stored under WEB-INF, but it does say and I quote the spec: No file contained in the WEB-INF directory may be served directly to a client by the container -- Servlet 2.3 spec pg 60 Given that, what good is storing a .jsp (or .gif, jpg, pdf, etc, ...) file in WEB-INF if the client can't request it? IMHO, files the client directly request should be outside the WEB-INF directory. Individual mileage may vary though. --David On Monday 26 November 2001 02:08 pm, you wrote: Note on the other stuff: Classes used on the server side should be in a package structure under WEB-INF/classes to work correctly. JSPs, static content, and client-side applets should all be outside the WEB-INF folder for proper operation. This is defined in the spec and is required for all applications conforming to it. Hope this clears some mystery. --David Smith I cannot find any place in the spec that says that JSPs, etc. cannot be under WEB-INF. I have seen many suggestions that this is a good place to put them to prevent direct access. In what way doesn't this provide proper operation. Frank Lawlor Athens Group, Inc. (512) 345-0600 x151 Athens Group, an employee-owned consulting firm integrating technology strategy and software solutions. -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Re: [repost] loading class files
I see Craig has answered on this. Since he was involved in writing the spec, he's most certainly the better person to answer this. Thanks Craig for the info. --David On Tuesday 27 November 2001 10:35 am, you wrote: You're right. The spec does not say jsps can not be stored under WEB-INF, but it does say and I quote the spec: No file contained in the WEB-INF directory may be served directly to a client by the container -- Servlet 2.3 spec pg 60 Given that, what good is storing a .jsp (or .gif, jpg, pdf, etc, ...) file in WEB-INF if the client can't request it? IMHO, files the client directly request should be outside the WEB-INF directory. Individual mileage may vary though. --David On Monday 26 November 2001 02:08 pm, you wrote: Note on the other stuff: Classes used on the server side should be in a package structure under WEB-INF/classes to work correctly. JSPs, static content, and client-side applets should all be outside the WEB-INF folder for proper operation. This is defined in the spec and is required for all applications conforming to it. Hope this clears some mystery. --David Smith I cannot find any place in the spec that says that JSPs, etc. cannot be under WEB-INF. I have seen many suggestions that this is a good place to put them to prevent direct access. In what way doesn't this provide proper operation. Frank Lawlor Athens Group, Inc. (512) 345-0600 x151 Athens Group, an employee-owned consulting firm integrating technology strategy and software solutions. -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Re: [repost] loading class files
Note on the other stuff: Classes used on the server side should be in a package structure under WEB-INF/classes to work correctly. JSPs, static content, and client-side applets should all be outside the WEB-INF folder for proper operation. This is defined in the spec and is required for all applications conforming to it. Hope this clears some mystery. --David Smith I cannot find any place in the spec that says that JSPs, etc. cannot be under WEB-INF. I have seen many suggestions that this is a good place to put them to prevent direct access. In what way doesn't this provide proper operation. Frank Lawlor Athens Group, Inc. (512) 345-0600 x151 Athens Group, an employee-owned consulting firm integrating technology strategy and software solutions. -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Re: [repost] loading class files
Hi, As suggested, I have unjarred the downloaded MySQL JDBC driver jar file and placed it in H:\jakarta-tomcat-4.0.1\webapps\netaps\WEB-INF\classes directory along with its package structure. It now works ie. the Driver class is found but somehow fails to register with the DriverManager class - all sorts of exceptions are raised. Any idea what could be the problem? My servlet uses JDBC and throws a page with an applet. Then via HttpURLConnection I have to do applet/servlet communication... Amit Lonkar [...] I use this setup on my linux box (TC 4.0.1, MySQL JDBC, Mandrake 8). The only issue I've ever had with the driver is the downloaded MySQL JDBC driver file needs to be unjarred. The .jar file nested inside is the actual JDBC driver. Place it in WEB-INF/lib and restart Tomcat so it can find the file. Alternatively, this file can be in CATALINA_BASE$/lib or CATALINA_BASE$/common/lib if you want it available to all your apps or all your apps and Tomcat itself respectively. Note on the other stuff: Classes used on the server side should be in a package structure under WEB-INF/classes to work correctly. JSPs, static content, and client-side applets should all be outside the WEB-INF folder for proper operation. This is defined in the spec and is required for all applications conforming to it. Hope this clears some mystery. --David Smith __ Quick Heal Eudora Plugin has scanned email for known viruses, trojans and worms. www.quickheal.com -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Re: [repost] loading class files
- Original Message - From: Yiu Wing [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Monday, November 19, 2001 1:58 AM Subject: Re: [repost] loading class files I suggest you put YourApplet.class together with your html/image or other static contents), for ex. : webapps/yourapp0/staticContent/ (staticContent is a folder made by you) Thanks very much for your reply and reference email. Yeah, I have to create an extra directory to store all my class files, and I also have to unzipped the JDBC driver in order to get my jsp applet running. But from one of the Tomcat's docs, which is tomcat-docs\appdev\deployment.html, in its mid page says, /WEB-INF/lib/ - This directory contains JAR files that contain Java class files (and associated resources) required for your application, such as third party class libraries or JDBC drivers. I've copied my JDBC driver there, but it just won't work. My citation is just the opposite of your reference email, which says that JAR files are static content and can't be place under /WEB-INF. Since my applet is running now, and so think the docs could be wrong or haven't covered this topic completely. I hope someone could look this up. Anyway, thanks very much for your email again. You have saved me! [...] Thanks for your thanking! :-) BTW, there are two kinds of class/jar in a webapp: - for Servlet/jsp(it works in server-side) - for Applet or other static content(it will be downloaded to client together with Applet class, and works in client-side) I think the reference email means: - class/jar for Servlet/jsp itself should be put under WEB-INF - class/jar for static content should Not be put under WEB-INF I think your JDBC driver is used by your JSP directly, it works in server-side, (it is not downloaded together with your Applat and work in client-side), so now, as you say, your JDBC driver should be put in WEB-INF/lib. Bo Nov19, 2001 reference email :-) In which directory of the Tomcat installation do we copy the html and applet classes? I suggest you also read the Application Developer's Guide included with Tomcat. The Tomcat 4 version is also online at: http://jakarta.apache.org/tomcat/tomcat-4.0-doc/appdev/ From the point of view of the server, applet classes and JAR files are just static content. Therefore, they should be placed in the same directory as your static HTML pages, ***not*** under /WEB-INF. Amit Lonkar Craig McClanahan Bo Nov.18, 2001 - Original Message - From: Yiu Wing [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, November 19, 2001 12:41 AM Subject: [repost] loading class files Sorry guys this is a repost. But after doing numerous google search and wading through the docs, I still can't solve my problem with regard to loading applet classes. I sincerely hope some of you can help me this time, I desperately need to get this working. The same message is as follow. Hello All, I'm writing an applet that uses JDBC to connect to MySQL server , and the applet is embedded in a jsp. I'm new to this, so I went on and read the docs that come with Tomcat. I'm also using CVS and ant for the development. The source code layout of my project is as suggested in the docs, which is project name |- docs |- src |- web |--WEB-INF In the project/web/WEB-INF directory, do I have to create a classes and lib subdirectories? The reason I ask this is because the class loader, from the Tomcat or web browser, can't find the class files. But they're clearly in the web directory, whose structure is as, project | login.jsp (that's the jsp file that embeds the applet) | WEB-INF |--- classes (this directory has all the needed class files) |--- lib (where the MySQL driver is stored) The Tomcat docs says the classes and lib dir are made visible to other classes within your particular web application, but why my class files can't be loaded there? If I move all the class files to the top of the web directory, and change code=MyClass.class to code=MyClass in the jsp file, then everything seems to working OK. Oh, yeah, almost forgot, I also need to copy the whole directory tree for the driver to the web directory as well. Setting the classpath for the driver doesn't work. I don't want to copy the class files to the top of the web directory every time, can those file be loaded in the classes and lib directories. Sorry about
Re: [repost] loading class files
I use this setup on my linux box (TC 4.0.1, MySQL JDBC, Mandrake 8). The only issue I've ever had with the driver is the downloaded MySQL JDBC driver file needs to be unjarred. The .jar file nested inside is the actual JDBC driver. Place it in WEB-INF/lib and restart Tomcat so it can find the file. Alternatively, this file can be in CATALINA_BASE$/lib or CATALINA_BASE$/common/lib if you want it available to all your apps or all your apps and Tomcat itself respectively. Note on the other stuff: Classes used on the server side should be in a package structure under WEB-INF/classes to work correctly. JSPs, static content, and client-side applets should all be outside the WEB-INF folder for proper operation. This is defined in the spec and is required for all applications conforming to it. Hope this clears some mystery. --David Smith On Monday 19 November 2001 12:41 am, you wrote: Sorry guys this is a repost. But after doing numerous google search and wading through the docs, I still can't solve my problem with regard to loading applet classes. I sincerely hope some of you can help me this time, I desperately need to get this working. The same message is as follow. Hello All, I'm writing an applet that uses JDBC to connect to MySQL server , and the applet is embedded in a jsp. I'm new to this, so I went on and read the docs that come with Tomcat. I'm also using CVS and ant for the development. The source code layout of my project is as suggested in the docs, which is project name |- docs |- src |- web | |--WEB-INF In the project/web/WEB-INF directory, do I have to create a classes and lib subdirectories? The reason I ask this is because the class loader, from the Tomcat or web browser, can't find the class files. But they're clearly in the web directory, whose structure is as, project | login.jsp (that's the jsp file that embeds the applet) | WEB-INF | |--- classes (this directory has all | the needed class files) |--- lib (where the MySQL driver is stored) The Tomcat docs says the classes and lib dir are made visible to other classes within your particular web application, but why my class files can't be loaded there? If I move all the class files to the top of the web directory, and change code=MyClass.class to code=MyClass in the jsp file, then everything seems to working OK. Oh, yeah, almost forgot, I also need to copy the whole directory tree for the driver to the web directory as well. Setting the classpath for the driver doesn't work. I don't want to copy the class files to the top of the web directory every time, can those file be loaded in the classes and lib directories. Sorry about this rather long message, but I'm getting very frustrated and hopping some of you can help me with this. Thanks for your help in advance. P.S. I'm using Tomcat4.0 on Win2000 -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Re: [repost] loading class files
[...] But from one of the Tomcat's docs, which is tomcat-docs\appdev\deployment.html, in its mid page says, /WEB-INF/lib/ - This directory contains JAR files that contain Java class files (and associated resources) required for your application, such as third party class libraries or JDBC drivers. I've copied my JDBC driver there, but it just won't work. My citation is just the opposite of your reference email, which says that JAR files are static content and can't be place under /WEB-INF. Since my applet is running now, and so think the docs could be wrong or haven't covered this topic completely. I hope someone could look this up. Anyway, thanks very much for your email again. You have saved me! [...] Thanks for your thanking! :-) I was very frustrated, I was trying to get this working for a week and I didn't get anywhere, that's why the big thanks ;-). BTW, there are two kinds of class/jar in a webapp: - for Servlet/jsp(it works in server-side) - for Applet or other static content(it will be downloaded to client together with Applet class, and works in client-side) I think the reference email means: - class/jar for Servlet/jsp itself should be put under WEB-INF - class/jar for static content should Not be put under WEB-INF I think your JDBC driver is used by your JSP directly, it works in server-side, (it is not downloaded together with your Applat and work in client-side), so now, as you say, your JDBC driver should be put in WEB-INF/lib. I'm just wondering the JDBC driver is working on the client side, cos' if I place the driver jar file in WEB-INF/lib directory then it can't be found. I've also tried the common/lib directory, as the other helpful folk suggested, and it can't be found there, either. I've actually embedded my database connection in the applet, so it does look like I should place the driver on a separate directory. [snip] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Re: [repost] loading class files
I use this setup on my linux box (TC 4.0.1, MySQL JDBC, Mandrake 8). The only issue I've ever had with the driver is the downloaded MySQL JDBC driver file needs to be unjarred. The .jar file nested inside is the actual JDBC driver. Place it in WEB-INF/lib and restart Tomcat so it can find the file. Alternatively, this file can be in CATALINA_BASE$/lib or CATALINA_BASE$/common/lib if you want it available to all your apps or all your apps and Tomcat itself respectively. My applet uses the JDBC directly, so I've unjarred the driver and everything works fine now. Thanks for clearing things up for me. Note on the other stuff: Classes used on the server side should be in a package structure under WEB-INF/classes to work correctly. JSPs, static content, and client-side applets should all be outside the WEB-INF folder for proper operation. This is defined in the spec and is required for all applications conforming to it. Hope this clears some mystery. --David Smith On Monday 19 November 2001 12:41 am, you wrote: Sorry guys this is a repost. But after doing numerous google search and wading through the docs, I still can't solve my problem with regard to loading applet classes. I sincerely hope some of you can help me this time, I desperately need to get this working. The same message is as follow. Hello All, I'm writing an applet that uses JDBC to connect to MySQL server , and the applet is embedded in a jsp. I'm new to this, so I went on and read the docs that come with Tomcat. I'm also using CVS and ant for the development. The source code layout of my project is as suggested in the docs, which is project name |- docs |- src |- web | |--WEB-INF In the project/web/WEB-INF directory, do I have to create a classes and lib subdirectories? The reason I ask this is because the class loader, from the Tomcat or web browser, can't find the class files. But they're clearly in the web directory, whose structure is as, project | login.jsp (that's the jsp file that embeds the applet) | WEB-INF | |--- classes (this directory has all | the needed class files) |--- lib (where the MySQL driver is stored) The Tomcat docs says the classes and lib dir are made visible to other classes within your particular web application, but why my class files can't be loaded there? If I move all the class files to the top of the web directory, and change code=MyClass.class to code=MyClass in the jsp file, then everything seems to working OK. Oh, yeah, almost forgot, I also need to copy the whole directory tree for the driver to the web directory as well. Setting the classpath for the driver doesn't work. I don't want to copy the class files to the top of the web directory every time, can those file be loaded in the classes and lib directories. Sorry about this rather long message, but I'm getting very frustrated and hopping some of you can help me with this. Thanks for your help in advance. P.S. I'm using Tomcat4.0 on Win2000 -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
[repost] loading class files
Sorry guys this is a repost. But after doing numerous google search and wading through the docs, I still can't solve my problem with regard to loading applet classes. I sincerely hope some of you can help me this time, I desperately need to get this working. The same message is as follow. Hello All, I'm writing an applet that uses JDBC to connect to MySQL server , and the applet is embedded in a jsp. I'm new to this, so I went on and read the docs that come with Tomcat. I'm also using CVS and ant for the development. The source code layout of my project is as suggested in the docs, which is project name |- docs |- src |- web |--WEB-INF In the project/web/WEB-INF directory, do I have to create a classes and lib subdirectories? The reason I ask this is because the class loader, from the Tomcat or web browser, can't find the class files. But they're clearly in the web directory, whose structure is as, project | login.jsp (that's the jsp file that embeds the applet) | WEB-INF |--- classes (this directory has all the needed class files) |--- lib (where the MySQL driver is stored) The Tomcat docs says the classes and lib dir are made visible to other classes within your particular web application, but why my class files can't be loaded there? If I move all the class files to the top of the web directory, and change code=MyClass.class to code=MyClass in the jsp file, then everything seems to working OK. Oh, yeah, almost forgot, I also need to copy the whole directory tree for the driver to the web directory as well. Setting the classpath for the driver doesn't work. I don't want to copy the class files to the top of the web directory every time, can those file be loaded in the classes and lib directories. Sorry about this rather long message, but I'm getting very frustrated and hopping some of you can help me with this. Thanks for your help in advance. P.S. I'm using Tomcat4.0 on Win2000 -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Re: [repost] loading class files
I suggest you put YourApplet.class together with your html/image or other static contents), for ex. : webapps/yourapp0/staticContent/ (staticContent is a folder made by you) reference email :-) In which directory of the Tomcat installation do we copy the html and applet classes? I suggest you also read the Application Developer's Guide included with Tomcat. The Tomcat 4 version is also online at: http://jakarta.apache.org/tomcat/tomcat-4.0-doc/appdev/ From the point of view of the server, applet classes and JAR files are just static content. Therefore, they should be placed in the same directory as your static HTML pages, ***not*** under /WEB-INF. Amit Lonkar Craig McClanahan Bo Nov.18, 2001 - Original Message - From: Yiu Wing [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, November 19, 2001 12:41 AM Subject: [repost] loading class files Sorry guys this is a repost. But after doing numerous google search and wading through the docs, I still can't solve my problem with regard to loading applet classes. I sincerely hope some of you can help me this time, I desperately need to get this working. The same message is as follow. Hello All, I'm writing an applet that uses JDBC to connect to MySQL server , and the applet is embedded in a jsp. I'm new to this, so I went on and read the docs that come with Tomcat. I'm also using CVS and ant for the development. The source code layout of my project is as suggested in the docs, which is project name |- docs |- src |- web |--WEB-INF In the project/web/WEB-INF directory, do I have to create a classes and lib subdirectories? The reason I ask this is because the class loader, from the Tomcat or web browser, can't find the class files. But they're clearly in the web directory, whose structure is as, project | login.jsp (that's the jsp file that embeds the applet) | WEB-INF |--- classes (this directory has all the needed class files) |--- lib (where the MySQL driver is stored) The Tomcat docs says the classes and lib dir are made visible to other classes within your particular web application, but why my class files can't be loaded there? If I move all the class files to the top of the web directory, and change code=MyClass.class to code=MyClass in the jsp file, then everything seems to working OK. Oh, yeah, almost forgot, I also need to copy the whole directory tree for the driver to the web directory as well. Setting the classpath for the driver doesn't work. I don't want to copy the class files to the top of the web directory every time, can those file be loaded in the classes and lib directories. Sorry about this rather long message, but I'm getting very frustrated and hopping some of you can help me with this. Thanks for your help in advance. P.S. I'm using Tomcat4.0 on Win2000 -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Re: [repost] loading class files
I suggest you put YourApplet.class together with your html/image or other static contents), for ex. : webapps/yourapp0/staticContent/ (staticContent is a folder made by you) Thanks very much for your reply and reference email. Yeah, I have to create an extra directory to store all my class files, and I also have to unzipped the JDBC driver in order to get my jsp applet running. But from one of the Tomcat's docs, which is tomcat-docs\appdev\deployment.html, in its mid page says, /WEB-INF/lib/ - This directory contains JAR files that contain Java class files (and associated resources) required for your application, such as third party class libraries or JDBC drivers. I've copied my JDBC driver there, but it just won't work. My citation is just the opposite of your reference email, which says that JAR files are static content and can't be place under /WEB-INF. Since my applet is running now, and so think the docs could be wrong or haven't covered this topic completely. I hope someone could look this up. Anyway, thanks very much for your email again. You have saved me! reference email :-) In which directory of the Tomcat installation do we copy the html and applet classes? I suggest you also read the Application Developer's Guide included with Tomcat. The Tomcat 4 version is also online at: http://jakarta.apache.org/tomcat/tomcat-4.0-doc/appdev/ From the point of view of the server, applet classes and JAR files are just static content. Therefore, they should be placed in the same directory as your static HTML pages, ***not*** under /WEB-INF. Amit Lonkar Craig McClanahan Bo Nov.18, 2001 - Original Message - From: Yiu Wing [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, November 19, 2001 12:41 AM Subject: [repost] loading class files Sorry guys this is a repost. But after doing numerous google search and wading through the docs, I still can't solve my problem with regard to loading applet classes. I sincerely hope some of you can help me this time, I desperately need to get this working. The same message is as follow. Hello All, I'm writing an applet that uses JDBC to connect to MySQL server , and the applet is embedded in a jsp. I'm new to this, so I went on and read the docs that come with Tomcat. I'm also using CVS and ant for the development. The source code layout of my project is as suggested in the docs, which is project name |- docs |- src |- web |--WEB-INF In the project/web/WEB-INF directory, do I have to create a classes and lib subdirectories? The reason I ask this is because the class loader, from the Tomcat or web browser, can't find the class files. But they're clearly in the web directory, whose structure is as, project | login.jsp (that's the jsp file that embeds the applet) | WEB-INF |--- classes (this directory has all the needed class files) |--- lib (where the MySQL driver is stored) The Tomcat docs says the classes and lib dir are made visible to other classes within your particular web application, but why my class files can't be loaded there? If I move all the class files to the top of the web directory, and change code=MyClass.class to code=MyClass in the jsp file, then everything seems to working OK. Oh, yeah, almost forgot, I also need to copy the whole directory tree for the driver to the web directory as well. Setting the classpath for the driver doesn't work. I don't want to copy the class files to the top of the web directory every time, can those file be loaded in the classes and lib directories. Sorry about this rather long message, but I'm getting very frustrated and hopping some of you can help me with this. Thanks for your help in advance. P.S. I'm using Tomcat4.0 on Win2000 -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Loading class files
Hello All, I'm writing an applet that uses JDBC to connect to MySQL server , and the applet is embedded in a jsp. I'm new to this, so I went on and read the docs that come with Tomcat. I'm also using CVS and ant for the development. The source code layout of my project is as suggested in the docs, which is project name |- docs |- src |- web |--WEB-INF In the project/web/WEB-INF directory, do I have to create a classes and lib subdirectories? The reason I ask this is because the class loader, from the Tomcat or web browser, can't find the class files. But they're clearly in the web directory, whose structure is as, project | login.jsp (that's the jsp file that embeds the applet) | WEB-INF |--- classes (this directory has all the needed class files) |--- lib (where the MySQL driver is stored) The Tomcat docs says the classes and lib dir are made visible to other classes within your particular web application, but why my class files can't be loaded there? If I move all the class files to the top of the web directory, and change code=MyClass.class to code=MyClass in the jsp file, then everything seems to working OK. Oh, yeah, almost forgot, I also need to copy the whole directory tree for the driver to the web directory as well. Setting the classpath for the driver doesn't work. I don't want to copy the class files to the top of the web directory every time, can those file be loaded in the classes and lib directories. Sorry about this rather long message, but I'm getting very frustrated and hopping some of you can help me with this. Thanks for your help in advance. P.S. I'm using Tomcat4.0 on Win2000 -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
