RE: Embedding Tomcat with Java App and JRE only
This is indeed the ight place. But please check the mail archives first. I'd had to Embed Tomcat way back in Dec 2001 - Jan 2002, and had faced lots of problems then, with not a single question of mine being answered. However, I'd posted some of my lessons learnt at around that time. I've replied to some other posts on Embedding Tomcat over the past months, you should get these on the mail archives too. I'm not at all aware of changes in Tomcat 4.1.x, but here are some of the problems that I'd faced: 1. Embedding Tomcat itself. Browse the source, trace how Bootstrap and Embedded work, and you'll learn that tomcat, is actually Catalina for Servlets, Jasper for JSPs, Connectors for HTTP services, etc. I first figured how the Digestion works (where server.xml is used to assemble together the Engine, the host, the contexts, etc), and then wrote something myself on the lines of Embedded. You need to understand just how Embedded works, and you'll have a working ServletContainer running. 2. Accessing LifeCycle events With 4.0.1, the LifeCycle Interface has just the starting and stopping events. I think 4.1.x now has starting, started, stopping and stopped (or something along those lines). Since I did not dare to alter the LifeCycle Interface myself (break compatibility with the Tomcat Developers, etc), I had to resort to a check after the entire server came up. 3. Getting Jasper to work right. I had to start my app via an executable Jar, and this changed the classpath. (Remember, I was not using the startup scripts). I chose to alter the java.class.path environment variable myself before starting to assemble the Catalina components together. If you're loading via a Jar too, then you'll need to use the JarFile API, access the manifest, used the Classpath attribute from the manifest, and assemble together a classpath again. (NOTE: 4.0.1 uses the javac compiler. 4.1.x uses Ant, so I have no idea on what to expect here.) I used the Visual Age for Java IDE then, so that helped a lot (The scrap book was the best aid I had). I think Eclipse gives you similar functionality, so you could perhaps experiment with snippets of code yourself. A lot has changed since 4.0.1. Browse the source, read the Javadocs, and you should have a good understanding in about a week's time. There was also a post recently of someone writing a book on How Tomcat works, you might want to give those PDF chapters a try. Like Yoav Shapira says, go ahead and ask questions, some one will surely answer. -- Sriram Developer, Object Edge Software India Pvt. Ltd. --- Shapira, Yoav [EMAIL PROTECTED] wrote: Howdy, This is the right place. Ask specific questions, post relevant materials (source code, stack traces, etc.), and most times you will get a good answer or two. Just like you did with your previous question. Yoav Shapira Millennium ChemInformatics -Original Message- From: Lee Peik Feng [mailto:[EMAIL PROTECTED] Sent: Monday, June 16, 2003 11:31 AM To: Tomcat Users List Subject: Re: Embedding Tomcat with Java App and JRE only Yes, it is very difficult to get help on Embedding Tomcat in Java App. Does someone know where can I get more help on EmbeddedTomcat? - Original Message - From: Shapira, Yoav [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Monday, June 16, 2003 9:28 PM Subject: RE: Embedding Tomcat with Java App and JRE only Howdy, Yes with two big BUTs: 1. You will no longer have the tomcat stated requirements, i.e. you will not have a standard usage of embedded tomcat, making it harder for you to receive accurate support for your questions. 2. You will of course lose the ability to deploy new JSPs to your app ;) That may not matter for your specification application though. Yoav Shapira Millennium ChemInformatics -Original Message- From: Lee Peik Feng [mailto:[EMAIL PROTECTED] Sent: Sunday, June 15, 2003 10:17 PM To: Tomcat Users List Subject: Re: Embedding Tomcat with Java App and JRE only Yes - Original Message - From: Kwok Ng [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, June 16, 2003 8:16 AM Subject: Embedding Tomcat with Java App and JRE only Hi folks, I have read a article that explains how to embed the Tomcat with java app in O'Reily website. I will try to do it for my java app. But I want to do one step further which use JRE instead of JDK. Does anybody know if I pre-compile all jsp files, is it possible to embed the Tomcat with JRE only? Thanks! Billy Ng - 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: Embedding Tomcat with Java App and JRE only
Howdy, Yes with two big BUTs: 1. You will no longer have the tomcat stated requirements, i.e. you will not have a standard usage of embedded tomcat, making it harder for you to receive accurate support for your questions. 2. You will of course lose the ability to deploy new JSPs to your app ;) That may not matter for your specification application though. Yoav Shapira Millennium ChemInformatics -Original Message- From: Lee Peik Feng [mailto:[EMAIL PROTECTED] Sent: Sunday, June 15, 2003 10:17 PM To: Tomcat Users List Subject: Re: Embedding Tomcat with Java App and JRE only Yes - Original Message - From: Kwok Ng [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, June 16, 2003 8:16 AM Subject: Embedding Tomcat with Java App and JRE only Hi folks, I have read a article that explains how to embed the Tomcat with java app in O'Reily website. I will try to do it for my java app. But I want to do one step further which use JRE instead of JDK. Does anybody know if I pre-compile all jsp files, is it possible to embed the Tomcat with JRE only? Thanks! Billy Ng - 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] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Embedding Tomcat with Java App and JRE only
Yes, it is very difficult to get help on Embedding Tomcat in Java App. Does someone know where can I get more help on EmbeddedTomcat? - Original Message - From: Shapira, Yoav [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Monday, June 16, 2003 9:28 PM Subject: RE: Embedding Tomcat with Java App and JRE only Howdy, Yes with two big BUTs: 1. You will no longer have the tomcat stated requirements, i.e. you will not have a standard usage of embedded tomcat, making it harder for you to receive accurate support for your questions. 2. You will of course lose the ability to deploy new JSPs to your app ;) That may not matter for your specification application though. Yoav Shapira Millennium ChemInformatics -Original Message- From: Lee Peik Feng [mailto:[EMAIL PROTECTED] Sent: Sunday, June 15, 2003 10:17 PM To: Tomcat Users List Subject: Re: Embedding Tomcat with Java App and JRE only Yes - Original Message - From: Kwok Ng [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, June 16, 2003 8:16 AM Subject: Embedding Tomcat with Java App and JRE only Hi folks, I have read a article that explains how to embed the Tomcat with java app in O'Reily website. I will try to do it for my java app. But I want to do one step further which use JRE instead of JDK. Does anybody know if I pre-compile all jsp files, is it possible to embed the Tomcat with JRE only? Thanks! Billy Ng - 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] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - 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: Embedding Tomcat with Java App and JRE only
Howdy, This is the right place. Ask specific questions, post relevant materials (source code, stack traces, etc.), and most times you will get a good answer or two. Just like you did with your previous question. Yoav Shapira Millennium ChemInformatics -Original Message- From: Lee Peik Feng [mailto:[EMAIL PROTECTED] Sent: Monday, June 16, 2003 11:31 AM To: Tomcat Users List Subject: Re: Embedding Tomcat with Java App and JRE only Yes, it is very difficult to get help on Embedding Tomcat in Java App. Does someone know where can I get more help on EmbeddedTomcat? - Original Message - From: Shapira, Yoav [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Monday, June 16, 2003 9:28 PM Subject: RE: Embedding Tomcat with Java App and JRE only Howdy, Yes with two big BUTs: 1. You will no longer have the tomcat stated requirements, i.e. you will not have a standard usage of embedded tomcat, making it harder for you to receive accurate support for your questions. 2. You will of course lose the ability to deploy new JSPs to your app ;) That may not matter for your specification application though. Yoav Shapira Millennium ChemInformatics -Original Message- From: Lee Peik Feng [mailto:[EMAIL PROTECTED] Sent: Sunday, June 15, 2003 10:17 PM To: Tomcat Users List Subject: Re: Embedding Tomcat with Java App and JRE only Yes - Original Message - From: Kwok Ng [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, June 16, 2003 8:16 AM Subject: Embedding Tomcat with Java App and JRE only Hi folks, I have read a article that explains how to embed the Tomcat with java app in O'Reily website. I will try to do it for my java app. But I want to do one step further which use JRE instead of JDK. Does anybody know if I pre-compile all jsp files, is it possible to embed the Tomcat with JRE only? Thanks! Billy Ng - 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] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - 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] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Embedding Tomcat with Java App and JRE only
Yes - Original Message - From: Kwok Ng [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, June 16, 2003 8:16 AM Subject: Embedding Tomcat with Java App and JRE only Hi folks, I have read a article that explains how to embed the Tomcat with java app in O'Reily website. I will try to do it for my java app. But I want to do one step further which use JRE instead of JDK. Does anybody know if I pre-compile all jsp files, is it possible to embed the Tomcat with JRE only? Thanks! Billy Ng - 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]
