Error Handling In Struts2
Contents |
tutorial we'll explore how to enable the Struts 2 framework to handle any uncaught exceptions generated by a web struts2 error page application. Struts 2 provides robust exception handling, including the ability
Struts2 Exception Handling
to automatically log any uncaught exceptions and redirect the user to a error web page.The Struts struts2 error message 2 user mailing list is an excellent place to get help. If you are having a problem getting the tutorial example applications to work search
Struts Error Handling
the Struts 2 mailing list. If you don't find an answer to your problem, post a question on the mailing list.Global Exception HandlingUsing the Struts 2 framework you can specify in the struts.xml how the framework should handle uncaught exceptions. The handling logic can apply to all actions (global exception handling) struts 2 error handling or to a specific action. Let's first discuss how to enable global exception handling.To enable global exception handling you need to add two nodes to struts.xml: global-exception-mapping and global-results. For example examine struts.xml from the exception_handling project.
an Action class that throws an
Struts2 Exception Handling Best Practices
Exception. The core idea is that an
Global Exception In Struts2
Exception thrown during the Action method can be automatically caught and struts2 exception interceptor mapped to a predefined Result. This declarative strategy is especially useful for frameworks, like Hibernate and Acegi, that https://struts.apache.org/docs/exception-handling.html throw RuntimeExceptions. As with many other parts of the framework, an Interceptor is needed to activate the exception mapping functionality. Below is a snippet from struts-default.xml which has the exception mapping already activated. snippet of struts-default.xml https://struts.apache.org/docs/exception-configuration.html ...
QuestionsJava Interview QuestionsJDBC Interview QuestionsServlet Interview QuestionsJSP Interview QuestionsStruts2 Interview QuestionsSpring Interview QuestionsHibernate Interview QuestionsJSF Interview QuestionsResourcesStoreHome » Struts 2 » http://www.journaldev.com/2421/struts2-exception-handling-example-tutorial Struts2 Exception Handling Example TutorialStruts2 Exception Handling Example TutorialJuly 25, 2016 by Pankaj 1 Comment Exceptions are common in any application. We try to catch it and process it but sometimes our application is not able to process it and it's thrown error handling to the container. Struts2 provides a robust mechanism through which we can provide customized response to client whenever any exception is thrown by the application.We know that Struts2 interceptors are like servlet filters that provide pre-processing of request and post-processing of application response. struts2 exception handling Struts2 provides exception handling support through com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor interceptor. This interceptor is part of basicStack and defaultStack interceptors stack, so we don't need to configure them for our application usage.We can provide exception handling at package level through global-exception-mappings and global-results and we can use exception-mapping in action mappings for action level exception handling. We need to provide result pages to use for different exception scenarios. Let's try to understand it's usage with a simple application.We will create a dynamic web project and then configure it as Maven project. Our project structure looks like below image.Web Application Configuration for Struts2Add struts2 dependency in pom.xml file like below.