Java Web Error Handling
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Simple exception handling HST error pages and error handling 4. Advanced exception handling Implement Hippo > Error Pages > By web.xml Show history 1. Handling error codes and exceptions by the web.xml In your web.xml you can configure error-page elements that act upon some error-code or exception-type. Typically, you might configure at the end of your web.xml the following: Servlets - Life Cycle Servlets - Examples Servlets - Form Data Servlets - Client Request Servlets - Server Response Servlets - Http Codes Servlets - servlet error-page Writing Filters Servlets - Exceptions Servlets - Cookies Handling Servlets - Session Tracking Servlets - spring error page web xml Database Access Servlets - File Uploading Servlets - Handling Date Servlets - Page Redirect Servlets - Hits Counter Servlets - Auto Refresh Servlets https://www.onehippo.org/library/concepts/error-pages-and-error-handling/1.-handling-error-codes-and-exceptions-by-the-web.xml.html - Sending Email Servlets - Packaging Servlets - Debugging Servlets - Internationalization Servlet Useful Resources Servlets - Questions and Answers Servlets - Quick Guide Servlets - Useful Resources Servlets - Discussion Selected Reading Developer's Best Practices Questions and Answers Effective Resume Writing HR Interview Questions Computer Glossary Who https://www.tutorialspoint.com/servlets/servlets-exception-handling.htm is Who Servlets - Exception Handling Advertisements Previous Page Next Page When a servlet throws an exception, the web container searches the configurations in web.xml that use the exception-type element for a match with the thrown exception type. You would have to use the error-page element in web.xml to specify the invocation of servlets in response to certain exceptions or HTTP status codes. web.xml Configuration: Consider, you have an ErrorHandler servlet which would be called whenever there is any defined exception or error. Following would be the entry created in web.xml. here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About http://stackoverflow.com/questions/5565245/how-to-handle-exceptions-in-java-web-applications Us Learn more about Stack Overflow the company Business Learn more about hiring http://stackoverflow.com/questions/2956167/how-can-i-catch-all-errors-to-same-page-from-web-xml developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to handle exceptions in Java web.xml error-page Web Applications? up vote 2 down vote favorite 1 i would like to handle my exceptions in a way to warning the user about the errors that occured . What i know is something like: servlet.java private void registerUser(...){ ... try{ DAOUser daoUser = new DAOUser(); daoUser.insert(user); catch(HibernateException he){ ... } DAOUser.java public void insert(User user) throws HibernateException { ... } This is the best approach java web error ? If not, what would you suggest ? Best regards, Valter Henrique. java jsp exception servlets java-ee share|improve this question edited Apr 6 '11 at 11:40 Jigar Joshi 160k27266332 asked Apr 6 '11 at 11:00 Valter Henrique 5,7453490148 add a comment| 2 Answers 2 active oldest votes up vote 7 down vote accepted An exception can be handled in different ways. In this case, it seems that the exception is resulting in a user notification or an error message. Now, the example you have shown should not throw any exception of that kind where you need to notify user. First of all, validate user input and don't make the flow of your program using exception. Well, there are exceptions where we need to notify user with some message. That can be done in controller using messages stored in property files, typically. You must know where to catch exception, where to throw it, and where to log. Here first thing I would like to suggest is not to do both, throw and log. If you think logging is appropriate, don't throw it. If you think throwing is appropriate, then don't log it. If you follow this way, here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How can I catch all errors to same page from web.xml? up vote 11 down vote favorite 2 I tried to use Web.xml Error-page Redirect