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Java Forum / General / September 2006Error-handling recommendations
My team is enhancing and maintaining a very large and in some places very old (8 yrs.) (pre-.jsp, servlets etc.) web app. As you can imagine, there is no coherent strategy for error handling and error stack traces are frequently throw onto the screen for the user to see. There is also no coherent strategy for defining text in the .jsp pages and the pages that are generated by the older portions of the application. Struts is out of the question as is Spring. We need to find a way to: 1. Define and maintain specific error messages in a central location that can be maintained in multiple languages. 2. Do the same for text messages that are displayed in .jsp pages. I've looked into using ResourceBundles in properties files. Has anyone out there successfully used ResourceBundles for error messages and displayed text? The application will eventually have be upgraded to a Spanish version so we need to get a handle on this ASAP. All suggestions are greatly appreciated! Hi, I have used resourcebundles and they come in handy. What app-server does your application run on? Java has pretty good support for locales as well. I've mostly used them as a part of a larger struts app, and used struts taglibs to display the messages based on the user's locale. Given your constraints, you might be better off creating your own custom tags, which can then use java localization and i18n to render messages. Other choice you have is to write scriptlets :) -cheers, Manish > My team is enhancing and maintaining a very large and in some places > very old (8 yrs.) (pre-.jsp, servlets etc.) web app. As you can [quoted text clipped - 14 lines] > > All suggestions are greatly appreciated! Hi, > I've looked into using ResourceBundles in properties files. Has anyone > out there successfully used ResourceBundles for error messages and > displayed text? The application will eventually have be upgraded to a > Spanish version so we need to get a handle on this ASAP. I think ResourceBundles is THE standard solution for internationalizing web apps (and other apps). It is probably the most comnonly used. But do use a tag lib to abstract away the Java code. Do not use scriptlets -- because it will make your pages an ugly mix of different languages. I use XML JSP syntax and the JSTL tag lib myself. The only thing I hate about that style of coding is the forgiveness of the EL language -- I want to be told when something I expected to be non null was not :) Soren Totally agree on the forgiveness of the EL - and it hits when you least expect it, and more often than not it is the end user who ends up catching it :) -cheers, Manish Thanks everyone. We don't use custom tags here but I'd be willing to give them a try in this instance. Has anyone seen an example of using tags with ResourceBundles? Of course I'll look via Google but if anyone has any opinions I'd appreciate it. We are using Tomcat as a servlet engine. Thanks, Bill > Totally agree on the forgiveness of the EL - and it hits when you least > expect it, and more often than not it is the end user who ends up > catching it :) > > -cheers, > Manish Hi Bill, You can use struts reourcebundles. There are plenty of turorials available regarding those. Here are a couple of links: http://www.systemmobile.com/?p=200 http://www.laliluna.de/struts-message-resources-tutorial.html -cheers, Manish 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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