How does The Struts 2 JSON plugin work?
The struts 2 JSON plugin allows you to create an action that can be serialized to a JSON object.
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How to send data from JSP to struts action class?
Finally we need to design a JSP page that sends the value to the Action Class and on the same page we will display the response handled by jQuery. To run the app, start your server and hit this URL in the address bar localhost: 8080/SendRequestFromAjaxToStruts/ and the respected output is shown below.
Do you need a new result type for JSON?
For JSON, you’ll need a new result type because obviously since the response is a JSON response, you don’t have a page to redirect to. So you need to download the JSON plugin first, if you don’t already have it in your struts download. As usual, save it to your application’s lib folder.
What is the default JSON package in jQuery?
The json-default package contains an interceptor and result type configuration for JSON requests and responses. Now let’s go to the code. jQuery allows you to issue an ajax request that expects a JSON object as the response from the getJSON method. Like all other ajax requests, the syntax to make the call is the same.
How is the serialization process in Apache Struts 2?
The serialization process is recursive, which means that the entire graph of the object will be serialized, starting with the action class (base class not included) (the root object can be customized using the “root” attribute). If the interceptor is used, the action will be completed from the JSON content in the request, here are the interceptor rules:
What is the best way to serialize JavaScript to JSON?
It’s very simple to use : +1 If you’re already using jQuery, this is the way to go. JSON-js is great as a standalone library, but this plugin seamlessly integrates JSON.stringify and JSON.parse with jQuery. It’s a win-win. IMHO this should be the accepted answer. — Evan Solla
How to add JSON interceptor to default stack?
In the code above, we add the json interceptor to the default stack. If you have your own stack, add the following lines to your stack. And the last change in the struts.xml file is to set the return type to json for the request action. That’s all the change for struts2.xml
What is the role of results in Struts 2?
As mentioned above, the tag plays the role of a view in the Struts2 MVC framework. The action is responsible for executing the business logic. The next step after executing the business logic is to display the view using the tag.
Can you create a new result type in struts?
In this case, you could create a new result type for XML or JSON and achieve this. Struts comes with a number of predefined result types and all we’ve already seen was the default result type dispatcher, which is used to send to JSP pages.
How can I retrieve an image from a JSON file?
In the JSON array above, the “Image” object has a URL of an image. This data can be stored in a JSON file. You can easily retrieve data from a JSON file using jQuery.
Can a JSON file store a URL of an image?
In addition to simple text data, you can also store image URLs. For example, in the JSON array above, the “Image” object has a URL to an image. This data can be stored in a JSON file. You can easily retrieve data from a JSON file using jQuery. Here is a post explaining how.