Basically, struts provides you with a few result types. In this case, you could create a new result type for xml or json and achieve this. For example, passing request params to action classes, making servlet api request, response, session available to action classes, validation, i18n support etc. It is used to streaming the inputstream back to the client and client can download the content. The action is responsible for executing the business logic. The action class manages the applications state, and the result type manages the view. That means we send the action result jsp file directly. Learn how to perform create, read, update and delete crud operations using struts 2. Part 2 of the migrating to struts 2 article series has been published, and the first dev build of struts 2 has also recently been launched. Redirect action result this result uses the actionmapper provided by the actionmapperfactory to redirect the browser to a url that invokes the specified action and optional namespace. Aug 23, 20 there are a few things that need to be done in order to use json with struts 2. Remove the action tag and user result name as success to redirect to view page without using controller. As we can see above, the result tag is responsible for redirecting to the. Is it possible in struts 2 to have a result that downloads a file stream.
Result types apache struts 2 wiki apache software foundation. In this post, i am updating previous example to use annotations to configure struts 2. I also wrote on post related to struts 2 hello world with xml configuration. Results and result types in struts 2 struts tutorial by wideskills. In this a struts and struts 2 app is compared and migrations. Cannot resolve result type redirectaction or cannot resolve result type redirect action both of which work fine in my webapp. Redirect result type creates a new request by calling response. Struts 2 action tag is used to call action class directly from a jsp page.
Each package may set a default result type to be used if none is specified in a result element. Struts 2 interceptors are responsible for most of the processing done by the framework. Is it possible in struts 2 to have a result that downloads. You are using an action as if it would be a servlet, which is not. You can change this to a different location by setting the property nvention. Result configuration apache struts apache software. These attributes used to build the uri used to substitute for the location attribute of the redirect result type.
The weblogic is behind a loadbalancer that does s to translation. Tutorialspoint examples provides best online struts 2 tutorial for beginners in eclipse tutorialspoint examples. Welcome download releases announcements license thanks. Struts2 exception handling example tutorial journaldev.
Struts 2 rest web service supports different content type response. If you are a maven user, you might want to get started using the maven archetype. Struts comes with a number of predefined result types and whatever weve already seen that was the default result type dispatcher, which is used to dispatch to jsp pages. There are a few things that need to be done in order to use json with struts 2. Also configure tomcat maven plugin for running web applications directly on eclipse. Struts 2 rest web service supports different contenttype response. Struts 2 redirect action the redirect result type calls the standard response. This is better than the servletredirectresult because it does not require you to encode the url patterns processed by the actionmapper in to your struts. In this example you will see how to perform create, read, update and delete crud operations. Struts 2 provide rest plugin to implement rest web service. Cannot resolve resulttype redirectaction or cannot resolve resulttype redirectaction both of which work fine in my webapp. Struts 2 hello world annotations example howtodoinjava. Hmmm in my experience with struts what you are trying to do doesnt fall into the mvc which struts implements. Jul 12, 2010 struts 2 action tag is used to call action class directly from a jsp page.
First, we need to change or query the applications state, and then we need to present an updated view of the application. In this tutorial, i am discussing all important points to keep in mind when integration spring framework with struts in conjunction with hibernate. Another type we use in our app is redirectaction type, just as the name says, it redirects the action result to another action. Download struts 2 page redirect example war struts 2 page redirect example maven zip. An action class with few methods to forward the result to different. The extensions main role is to improve the detection of links and transaction computations where apache struts is. In my previous posts, i have written many examples and tutorials on jaxrs resteasy, spring 3, hibernate and other java frameworks e. Results and result types in struts 2 struts tutorial by. Struts2 exception handling example tutorial exceptions are common in any application. The framework provides several implementations of the com. An action class with few methods to forward the result to different result page. Oct 18, 2006 part 2 of the migrating to struts 2 article series has been published, and the first dev build of struts 2 has also recently been launched. In our example, we allow user to download and save content in pdf format.
That method returns an url, the one i want to redirect to when my action return successnoform string. Struts 2 redirect page and display a different url. Migrating from struts 1 to struts 2 raible designs. Is it possible in struts 2 to have a result that downloads a. I will be explaining only the points that is not covered in the previous examples. Redirect action result apache struts apache software. Once you redirect to a completley different site youll have defeated the purpose of associating a controller and its logic with your application. Another type we use in our app is redirect action type, just as the name says, it redirects the action result to another action. A common a pattern in web application development in which your. Jun 16, 2010 a struts 2 example to show the use of custom result type to allow user to download file. In this section, you will get familiar with struts 2 redirect action and learn to use it in the struts 2 application. But here, the target result must be an action either in same application or in the other application.
Struts2 struts2 submit button with id in iterated list. We are getting url value from jsp get url value in struts. This extension provides support for apache struts this support is in addition to the basic support provided for apache struts in the jee analyzer. Previously, before my struts2 code, these parameters were passed as hidden values via js form submission and forwarding from page wout showing user anything. This post and redirect pattern is supported by struts 2. You can change this to a different location by setting the property struts. The means of doing this wasnt obvious to me, but some reading and searching turned up the answer. For json, you will require a new result type, because, obviously, since the response is a json response, you dont have a page to redirect to. With struts, uploading files is easy to implement since the framework provides fileuploadinterceptor. This result uses the actionmapper provided by the actionmapperfactory to redirect the browser to a url that invokes the specified action and optional namespace. In action class, declared an inputstream data type and its getter method. Redirectaction adds an additional context name in url while. If we do not specify result type in the result element, we actually use the default type.
Ok so i am wondering if its possible to setparameter using struts2. Contribute to apachestruts site development by creating an account on github. That gives us a clear idea that struts2 have more than one result type. Struts 2 could not find a result for success returned from an action. We try to catch it and process it but sometimes our application is not able to process it and its thrown to the container. A struts 2 example to show the use of custom result type to allow user to download file. This chapter will introduce you to all the results and its types used in struts 2 web application development. Struts2 login application a complete example dzone. Struts allow you to use other markup languages for the view technology to present the results and popular choices include velocity, freemaker, xslt and tiles. Please download and extract it to any partition drive 1 eclipse 3. There are some examples around for doing a redirect using static parameters, but that doesnt help when you want to redirect someone say to display the order they just placed on your website. In struts2, to achieve your goal, you need to use the stream result type.
Edit on github back to core developers guide redirect action result. Result interface, ready to use in your own applications. This tutorial provides a step by step guide on how to implement upload file functionality with struts framework. This chapter will introduce you to all the results and its types used in struts 2 web. Lets get started, the screen shot of the example is.
855 1334 336 1400 277 224 504 225 1674 1582 1108 594 170 1656 31 1190 1568 573 1471 621 73 493 1369 61 139 462 364 898 1395