Struts2 provides or supports to 11 types of results. This tutorial will explain how to implements ajax to call action class in struts 2. Jquerys form plugin doc says it support response type of html or xml. Dec 17, 2016 this tutorial will explain how to implements ajax to call action class in struts 2.
In this example, we are going to use jquery ajax to fetch the list of data. Multiselect parameter behavior different between struts 2. Struts 2 ajax jquery json example here you will see how to use ajax and jquery to send request to the server and get json response back from the server and process it on jsp page. Jun 28, 2017 struts 2 crud example using jquery ajax and jdbc. Results and result types in struts 2 struts tutorial by. The dispatcher result forwarded the action to the different action. Dojo the ajax tags dojo plugin was represented as a theme for struts 2. For ajax support you need to add following jar to your classpath struts2dojoplugin. 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. How to get servlet session, request, response, context. First of all, to proceed with this example, you need to add struts2 dojoplugin 2.
Its a great example of dependency injection in java ee frameworks these aware interfaces are. All of these interfaces declares setter methods through which struts 2 api injects servlet api components in action classes. In this example, you will see the use of ajax div tag of struts 2. Struts consists of a number of predefined result types and whatever has been seen previously that was the default result type dispatcher, which is used to dispatch to jsp pages. Aug 22, 2019 struts2 is an mvcbased framework so the following three components will be present in all struts2 applications. Ajax apache struts 2 wiki apache software foundation. In this section, we will introduce you to about the ajax div tag.
The ajax tags struts uses the dojo framework for the ajax tag implementation. The div tag when used with ajax refreshes the content of a particular section without refreshing the entire page. Action must have a public setter method for fields that must be populated. Ajax implementation in struts 2 using jquery and json. In order to add ajax support, you need to add following jar file in your classpath. If i use typestream then i am getting below exception. Required jar file before we start, we need to make sure commonsio. Execandwaitinterceptor doesnt work with jquery ajax call. It is not found in the default stack so we need to define it explicitly. Struts 2 comes with powerful set of dojo ajax apis which you can use to add ajax support. Often there is some navigation rules attached with the results.
Example to show the use of list, ognl and object to populate data to a radio button thats created via struts 2 tag. The view part of struts 2 is highly configurable and it supports different result types such as velocity, freemarker, jsp, etc. This interface provides access to session attributes in action classes and declare a single method setsessionmap sessionattributes. There are three possible ways the result can be executed. As mentioned previously, the results tag plays the role of a view in the struts2 mvc framework. How to call action class using ajax in struts 2 websparrow. There are some alternatives on how to configure struts with ajax which you can find in struts website.
To use dispatcher in result you need to do the following mapping. Remote form submission support works with the submit. In this example i am trying to create a autocomplete textbox and when you select one value from this autocomplete drop down the other will populate accordingly. You dont necessarily have to return a string from a struts2 action method. The struts 2 file upload interceptor is based on multipartrequestwrapper, which is automatically applied to the request if it contains the file element. This chapter will introduce you to all the results and its types used in struts 2 web application development. Now, if i remove the metarefresh tag and replace it with a jquery script to reload the page, what i see is my action gets invoked for each request and the final result page never arrives.
Struts 2 the ajax tags struts uses the dojo framework for the ajax tag implementation. The theme uses the popular dojo ajax javascript toolkit. Jul 28, 20 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. The json content must be well formed, see for grammar. If you extend struts default, all the actions of this package can use the interceptors and result types defined in the struts default. For configuring struts 2 in your eclipse ide please refer configuring struts 2 link. It doesnt perform any validation itself that is why it must be used with validation interceptor. Struts 2 provides inbuilt support to ajax using dojo toolkit library. Create dynamic web project named struts2firstproject. This is our action class which respond to a user action, as we know that action class is the key to struts2 application and most of the logics are implemented in this class. It comes with dojo ajax apis which you can use to support ajax. You can have your action method return not a string result, but a result of type streamresult. Hi, i am trying to implement ajax file upload using jquerys form plugin which uses iframe internally. Jan, 2010 struts 2 comes with powerful set of dojo ajax apis which you can use to add ajax support.
Struts uses the dojo framework for the ajax tag implementation. The action is responsible for executing the business logic. The jsondefault package contains an interceptor and the result type configuration for json requests and responses. The quickest way to get started is to write a jquery ajax call to one of your functions of your action class i assume you are familiar with the mvc concepts. It forwarded the same to the dispatch the request data to the desired action. 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. Return string result type from struts2 stack overflow. Architecture of struts 2 framework features and enhancements in struts 2. Aug 17, 20 previous next in this tutorial we will discuss about struts 2 ajax call tag with using struts dojo plugin in our application.
Its used to forward to a servlet, jsp, html page, and so on, on. Struts2 is an mvcbased framework so the following three components will be present in all struts2 applications. The ajax theme extends the xhtml theme with ajax features. Action class to create list of the genders and languages values for radio button.
Struts also allow the user to use other mark up languages for the view technology to display the results and popular choices include velocity, freemaker, xslt and tiles. Behind the scenes struts will use a requestdispatcher, where the target servletjsp receives the same requestresponse objects as the original servletjsp. Struts 2 ajax validation jsonvalidation interceptor. Default result type is dispatcher, which is used to dispatch to jsp pages. The next step after executing the business logic is to display the view using the results tag. Action class which is a pojo class pojo means it is not part of any type hierarchy and can be used as a standalone class. In such case, page will not be refreshed or reloaded so it will make the performance fast. The view part of struts 2 is highly configurable and it supports different resulttypes such as velocity, freemarker, jsp, etc. First of all, to proceed with this example, you need to add struts2dojoplugin2. July 21, 2018 on this page, we will create a simple struts2 crud operation using jquery ajax. Ajax validation in struts 2 is performed by jsonvalidation interceptor.
Architecture of struts 2 struts 2 architecture is based on webwork 2. I am not sure what result type to choose for ajax response. First of all, to proceed with this example, you need to add struts2dojoplugin 2. Therefore, you can pass data between them using request. The json plugin provides a json result type that serializes actions into json. The action is the subelement of package and represents an action. The dispatcher result type is the default type, and is used if no other result type is specified. Previous next in this tutorial we will discuss about struts 2 ajax call tag with using struts dojo plugin in our application.
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