Preserving messages across a redirect in struts 2 glindholm. Jul 02, 2008 this has been updated to work with struts 2. The 56 consequence of doing this means that the action action instance, action 57 errors, field errors, etc that was just executed is lost and no longer 58 available. The 56 consequence of doing this means that the action action instance, action 57 errors, field errors, etc that was. Mar 17, 2009 1 struts2 dynamic parameters for redirects part ii gazgas blog april 3, 2009 at 2. In struts we can use a mechanism of controlling a request using interceptors and the interceptors are responsible for the most of the request process. The servletactioncontext class provides methods to get instance of servletrequest, servletresponse and servletcontext. The standard response to the question how do you preserve messages across a redirect. Filterdispatcher is used in the early struts2 development, and its deprecated since struts 2. When ever user click any link on the page,first the securityaction class should be called and if it is successful forward to another action class which does the business related thing and if it is not security is not. This validation annotation checks that a double field has a value within a specified range. While designing web application, sometimes we have to make sure that double form submission is treated as duplicate request and not be processed. Simple hack alternative to url redirect for struts. Behind the scenes struts will use a requestdispatcher, where the target servletjsp receives the same requestresponse objects as the original servletjsp.
The commonly used methods provided by servletactioncontext class are as follows. Im going to need to add additional parameters, some of which may be extremely large, and which id prefer the user not be able to. Sep 30, 20 hi i have an application that runs on weblogic 10. Struts 2 applications can use java 5 annotations as an alternative to xml and java properties configuration. Calls the sendredirect method to the location specified. Hi i have worked with portal for a few years and have solutions for doing redirect from a portlet action and from a struts action also. Behind the scenes struts will use a requestdispatcher, where the target servletjsp receives the same request. The server will ask browser to redirect the request to another url and the browser will simply execute the request on client side.
I have only used struts with wps 5, but have done redirects to other pagessites on version 1. Here is the list of most important annotations related to different categories. It aims at providing increased productivity through reduced xml configuration, smart conventions, and a modular. Jun 08, 2010 no idea why the struts 2 annotation set the webinfcontent as default folder, but most applications will not put the result pages in this webinfcontent folder. Paramnameawareresult interface when used with strutsresultbuilder can limit parameters assigned to the result. Servletdispatcherresult, which means the method is either very unpopular or very old. Used to stream an inputstream back to the browser usually for file downloads velocity result. Struts 2 interceptors are responsible for most of the processing done by the framework. Im trying to have my struts2 app redirect to a generated url. It works at client side because it uses the url bar of the browser to make another request. There are two ways to get the servlet request object inside struts 2 action classs execute method. The parse parameter tells struts 2 to parse any additional parameters using the ognl expression language. I want to redirect action success to another jsp but its not working.
In this redirectaction result weve added two parameters using param tags. Architecture of struts 2 framework features and enhancements in struts 2. In my struts config file, i have an action def like this instead of. For example, passing request params to action classes, making servlet api request, response, session available to action classes, validation, i18n support etc. These examples are extracted from open source projects. Directly accessing the getresponse method from the servletactioncontext class will return the response object servletresponseaware. I rather struts 2 put the root path as the default folder. Result types apache struts 2 wiki apache software foundation.
In this redirect action result weve added two parameters using param tags. If you implement the action class with servletresponseaware interface, then struts controller will. For example, if user reloads the online payment form and there are not enough checks in place to identify it as. As noted in servlet api doc, illegalstateexception will be thrown in this scenario. The system has recorded your request and will come up with examples later. I ended up subclassing struts servletredirectresult and overriding its doexecute method to do my logic before calling super. Join for free recently as a requirement i had to work on a url redirect for. Struts interceptors are widely used in struts application to intercept the requests that needs to be processed. Hi all, i am unable to deploy my struts web application in jboss 7.
You could always write a wrapper servlet that takes care of the redirection if is called and delgates to the original servlet if s is called. In struts 2 when your result type is a redirect or redirectaction you will loose any error messages that your action created unless you take special steps to preserve them. If you have a webserver, it is common to configure the webserver to do the redirect. Used to display the raw content of a particular page i. However, struts 2 defaults to passing the parameter via appending it to the url in a get request. Server sends redirect requestin header of response to browser 2. The response is told to redirect the browser to the specified location a new request from the client. The response is told to redirect the 55 browser to the specified location a new request from the client. Interceptors are a type of object that helps to intercepts an action dynamically. Struts 2 token interceptor can be used to handle multiple form submission problem. The weblogic is behind a loadbalancer that does s to translation. There are two ways to get the servlet response object inside struts 2 action classs execute method. The consequence of doing this means that the action action instance, action errors, field errors, etc that was just executed is lost and no longer available. So you can simple extend existing result with such a functionality as below.
Its not just information from the configuration servletdispatcherresult. Contribute to apachestruts development by creating an account on github. Struts2 dynamic parameters for redirects gazgas blog. In which an action is redirected to another action. It aims at providing increased productivity through reduced xml configuration, smart conventions, and. No idea why the struts 2 annotation set the webinfcontent as default folder, but most applications will not put the result pages in this webinfcontent folder. Cannot resolve resulttype redirectaction or cannot resolve resulttype redirect action both of which work fine in my webapp. Struts 2 redirect action the redirect result type calls the standard response. In this section, you will get familiar with struts 2 redirect action and learn to use it in the struts 2 application. Redirecting directly from action definition get started. If you have to do it on an app server, im not sure if you can do it without changing the servlet. Struts2 is the next generation of modelviewcontroller web application frameworks. This is a common use to redirect action to display a page.
This means the only way to pass values is in the url. Join the dzone community and get the full member experience. This is because actions are built on a singlethread model. If your data is small enough, you could encodeencrypt it into the url and decode it back after the redirect an approach that isnt clean and i wouldnt recommend. The id parameter tells struts 2 to add this as a parameter to the next action by evaluating the ognl statement against the current value stack. For one of my s2 apps i needed to redirect to an external site. December 16, 20 by krishna srinivasan leave a comment. Its just a struts 2 convention not a standard folder structure. The following are top voted examples for showing how to use org. Redirectaction parameters via post guillaume bilodeau. In this case, i want the url to use the current date, or a date i looked up in a database. Calling a action class from another action class hi, i have a situation where i want to forward to a action class from another action class.
9 1036 392 1240 547 1293 175 1497 1235 1590 1186 584 232 947 695 915 461 390 1388 457 163 1341 857 880 988 210 712 414 468 153