CODEWITHSUNDEEP
jqueryajaxstruts2
silpa
silpa

Reputation: 163

How to write Struts2 action with dynamic method to accept call from jquery Ajax

I am struggling with a supposedly simple task. I have an ajax call to a method on action class. How should the action method look like? Thanks.

$.ajax( {
    type : "POST",
    url : "loadBenchMark",
    data : {rulesetInt: 1},
    success : function(data) {          
             console.log('success');
    },
    error : function(request, textStatus, errorThrown) {
        console.log("Error Thrown:"  +request.statusText); 
        }
});

My struts.xml

     <action name="loadBenchMark"
        class="com.test.cashdesk.mktpx.ui.action.LoadDefaultsAction" method="retrieveBenchmark">
        <result type="json"></result>
    </action>

I tried my action method to be like

  public String retrieveBenchmark(int rulesetInt) {
    // do something here
    return SUCCESS;
}

but the call to the action throws a 500 internal server error.

having a getter setter for rulesetInt and call to action method like this works. public String retrieveBenchmark() { // access rulesetInt here} Answer from here

Please help.

Upvotes: 1

Views: 4175

Answers (3)

silpa
silpa

Reputation: 163

Thanks for the answers. I used 'Steven Benitez' way of doing to achieve what I wanted.

I needed to post a lot of complex javascript object arrays as part of ajax call. So now Declared a String variable ajaxJSONData in the action with getter and setter. I put some code below. I deserialize the string on java side.

Ajax call: 

var postData = ajaxPostData("loadGridData");
// <![CDATA[
$.ajax( {
    type : "POST",
    url : "finalRuleTbaAction",
    data : {"ajaxJSONData" : postData},
    dataType : "json",
    success : function(result) { ............
     });

function :

function ajaxPostData(callingMethod) {
 if("loadTemplateAndCoupons" == callingMethod) {
    var result = [];
    result.push(new jsObject("ruleset", $('#ruleset').val()));
    result.push(new jsObject("benchmark", $('#productSelect').val()));
    return JSON.stringify(result);
  } else if("loadGridData" == callingMethod) {
    var result = [];
    result.push(new jsObject("ruleset", $('#ruleset').val()));
    result.push(new jsObject("benchmark", $('#productSelect').val()));
    result.push(new jsObject("couponmin", $('#couponmin').val()));
    result.push(new jsObject("couponmax", $('#couponmax').val()));
    return JSON.stringify(result);
  } 
   }

Upvotes: 0

Anupam
Anupam

Reputation: 8016

If you want to send different javascript objects and dont want to declare getter/setter for them in the action class use the following method

In your action class decleration

public class YourClass extends ActionSupport implements ServletRequestAware

then declare this varible and its getter/setter

HttpServletRequest request


public void setServletRequest(HttpServletRequest request) {
    this.request = request;
}

public HttpServletRequest getServletRequest() {
    return this.request;
}

Now in your function

public String retrieveBenchmark() {
   String stringValue=getServletRequest().getParameter("rulesetInt");
   int rulesetInt=Integer.parseInt(stringValue);//do this if your value is integer
    // do something here
    return SUCCESS;
}

now you can send any variable and without declaring getter function you can access it using getServletRequest().getParameter("yourVariableName")

Upvotes: 1

Steven Benitez
Steven Benitez

Reputation: 11055

No, Struts2 action methods do not take arguments. If you want to set a parameter called rulesetInt, you will need a setRulesetInt method.

Example

private int rulesetInt;

public String retrieveBenchmark() {
    // do something here
    return SUCCESS;
}

public void setRulesetInt(final int rulesetInt) {
    this.rulesetInt = rulesetInt;
}

Upvotes: 1

Related Questions