Question

I send function from getMinimizedFunction.jsp using $.post to some struts2 action, which call some java method that clculates the minimized function. How can I return the minimized function from the action to the callback function in the same jsp getMinimizedFunction.jsp?

I have in my getMinimizedFunction.jsp the following code:

              String function="A*B'+A*B";
              url='getMinFunction.action';
              pars={function:function};
             $.post(url,pars,someCallback);


function someCallback(data){
     do something with data;  //data =A (the minimized Function)
    }

Answer 1

You can return stream result as explained in this tutorial

<action name="getMinFunction" class="YourClass">
 <result type="stream">
    <param name="contentType">text/html</param>
    <param name="inputName">inputStream</param>
  </result>
</action>

Or, you can use struts2-jquery-plugin , it makes working with ajax simpler.