Application Error Web Service
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and exception handling in web services in java policies of this site About Us Learn more about Stack Overflow the exception handling in rest web services java company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags exception handling in web services c# 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 rest error handling best practices takes a minute: Sign up Why global.asax Application_Error method does not catch exceptions thrown by ASMX service? up vote 37 down vote favorite 10 And how to fix it. I'd like to log every thrown exception for maintenance purpose. asp.net error-handling asmx share|improve this question asked Oct 17 '08 at 9:21 caustic 6402913 add a comment| 4 Answers 4 active oldest
Web Service Exception Handling Best Practices Java
votes up vote 39 down vote This is a known issue in .Net - Application_Error never fires for a web service. Not sure if there's any reason it would be by design, but it just doesn't work. Jeff Atwood had a post (and follow-up) about this a few years ago, with the following ideas: Put a try-catch block around each web service method Use a facade design pattern and include the try-catch in parent objects Write a custom SOAP extension or HTTPModule The only one I care for is the first one, even though it seems like a lot of work. share|improve this answer edited Aug 29 '14 at 13:23 Medinoc 5,615925 answered Oct 17 '08 at 11:50 Raelshark 1,30211632 add a comment| up vote 15 down vote Better: HttpApplication.Error event: Note: If your Web application contains XML Web services, you cannot use the Error event for global exception handling of those services. The HTTP handler for XML Web services consumes any exception that occurs in an XML Web service and converts it to a SOAP fault before the Error bein
commonly used to refer to the transmission of XML over HTTP, and the identification of XML resources via URIs. According to REST, HTTP, XML and URIs provide all
Web Service Error Handling Best Practices
the infrastructure for building robust web services, and most developers can therefore rest error response body safely skip over the pain of learning SOAP and WSDL. If you are new to REST, check out Paul soap exception handling c# Prescod's excellent REST articles on xml.com. A major element of web services is planning for when things go wrong, and propagating error messages back to client applications. However, unlike SOAP, http://stackoverflow.com/questions/211530/why-global-asax-application-error-method-does-not-catch-exceptions-thrown-by-asm REST-based web services do not have a well-defined convention for returning error messages. In fact, after surveying a number of REST-based web services in the wild, there appear to be four different alternatives for handling errors. Below, I outline the four alternatives, and then provide my opinion on which option or combination of options is best. Option 1: Stick to HTTP http://archive.oreilly.com/pub/post/restful_error_handling.html Error Codes In this scenario, the web service propagates error messages via standard HTTP Error Codes. For example, assume we have the following URL: http://www.example.com/xml/book?id=1234&dev_token=ABCD1234 This service expects a single parameter: id indicating a book ID. The service extracts the id parameter, does a database look-up and returns an XML representation of the specified book. If the URL specifies an invalid or obsolete id parameter, the service returns an HTTP 404 Not Found Error Code. Option 2: Return an Empty Set In this scenario, the web service always returns back an XML document which can have 0 or more subelements. If some error occurs, an XML document with zero elements is returned. The O'Reilly Meerkat news service currently uses this approach. For example, the following URL connects to Meerkat and requests all Linux related articles from the past two days, and formats the results in RSS 0.91: http://www.oreillynet.com/meerkat/?c=cat10&t=2DAY&_fl=xml Now, try specifying an invalid category. For example, set c =ten, like this: http://www.oreillynet.com/meerkat/?c=ten&t=2DAY&_fl=rss In this case, Meerkat returns an RSS document with zero item elements. This indicates that there are no matching results,
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with Flume and HiveOozie Coordinator Properties and Configuration ManagementHive Testing with MiniHiveServer2Dynamically Resize EMRWeb Services ArticlesAdvanced Error Handling for REST Based Web ServiceWeb Service Project StructureMinecraft ArticlesIs Minecraft Educational?Minecraft Bukkit PluginsMinecraft Mods with ForgeGetting Your Environment SetupMod StructureCustom Red Diamond Tool MaterialCustom ItemsCustom Blocks & OresCustom Tools & WeaponsSmelting & Crafting RecipesSpawning Your Custom OreCustom Actions with ItemsCreating a NukePackaging Your ModWhy Agile FailsAboutResume Advanced Error Handling for REST Based Web Service REST Error Handling What is the best way to do REST Error Handling? I have struggled with this over the years. Let me present the typical scenario that I have seen. Your team starts working on some shiny new web service, and of course it is going to be REST. In the initial development, there are lots of errors—all kinds 404, 400, 30X, etc… Then as those bugs are found and fixed, the web service begins to stabilize. Soon, the only error you get back is the Internal Server (500) error. So what does the 500 error provide you in its vanilla form? Well, not really all that much. There is no detailed information available. You are left to note the error and then review the logs later. Is this really the best way to do REST error handling? The short answer is no it is not! Fortunately, there is an approach that can be used for REST Error Handling to provide detailed information for the dreaded 500 error. Let's start with an overview of how the REST Error Handling can be done. First, we will begin with the server side, which is where the error will first occur. In the controller we are going to want to catch the exceptions thrown up by the services, and convert those into an error response, but with some additiona