How to write action class in struts 2 json

The struts action that we will write will just be used to say Hi to the user. In the following code sections, we will see how we can not only handle simple data types, but also, lists and maps as JSON objects.

struts2 result types

Like all other ajax requests, the syntax for making the call is the same. We will see a code snippet shortly. HashMap; import java.

struts 1 json response

SMDMethod; import com. Since this is a demo, I have created a few instance variables of type List and Map and will populate some dummy values in them so that they can be retrieved using javascript later.

how to get data from database using ajax in struts2

So, first you need to download the JSON plugin, if you already dont have it in your struts download. The callback function will receive as a parameter the object returned from your action. The json-default package contains an interceptor and the result type configuration for JSON requests and responses.

Struts2 ajax example

So, first you need to download the JSON plugin, if you already dont have it in your struts download. In the following code sections, we will see how we can not only handle simple data types, but also, lists and maps as JSON objects. Now my server side code is ready. This can be prevented by setting excludeNullProperties to true. Keep the json plugin jar in your lib directory. TIP : json-default package extends struts-default. If the value of any getter method returns a null, the value of the javascript attribute will be null and vice versa. Since this is a demo, I have created a few instance variables of type List and Map and will populate some dummy values in them so that they can be retrieved using javascript later. In struts. You need to pass the url, a javascript object representing the form parameters, and a function that will be invoked upon the return of the invocation. First the HTML. ActionSupport; import org. Lets handle the submit event of this form in the code to return false, since we do not want to be going anywhere when the user submits.
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Struts 2 + JSON Integration Annotation Example