get JSON data from struts

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I can get part of data from the Action function, by using the JSONArray.fromObject method, using AJAX to receive the json object. But it is very strange that t

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暗喜

2020-12-07 06:53

Try this, will help you in Struts 2.0.14 with jsonplugin-0.32.jar.

struts.xml:

<struts>
     <package name="example" extends="json-default">
        <action name="HelloWorld" class="example.HelloWorld"  >
            <result type="json" />
        </action>
              <action name="HelloWorld1" class="example.HelloWorld"  >
            <result name="success" >example/HelloWorld.jsp</result>
        </action>
    </package>
</struts>

action class Helloworld.java:

package prabhakar;

import glb.DB;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * Prabhakar
 */
public class HelloWorld  {


    private List<StateMaster> stateList= new ArrayList<StateMaster>();
    private List<RegnMaster> regnList= new ArrayList<StateMaster>();

    private Integer stateId;
    public Integer getStateId()
    {
    return this.stateId;
    }
    public void setStateId(Integer stateId)
    {
    this.stateId=stateId;
    }
    public List<StateMaster> getStateList() {
        return stateList;
    }

    public void setStateList(List<StateMaster> stateList) {
        this.stateList = stateList;
    }
     public void setRegnList(List<RegnMaster> regnList) {
        this.regnList = regnList;
    }
    public List<RegnMaster> getRegnList() {
        return regnList;
    }

    public String execute() throws Exception {

        stateList=DB.getStateData()//
        if(stateId !=null)
          {
         regnList=DB.getRegnByStateId(stateId);
          }

        //setMessage(getText(MESSAGE));
        return "success";
    }

    /**
     * Provide default valuie for Message property.
     */

}

You can directly call HelloWorld.action to view the JSON data or else you can bind the JSON data to a form element below.

JSP page HelloWorld.jsp:

  /*
     Prabhakar
  */

<%@ page contentType="text/html; charset=UTF-8" %>

<%@ taglib prefix="s" uri="/struts-tags" %>
<script>
<%@include file="../js/jquery-1.7.1.min.js"%>
</script>
    <html>

<!-- JavaScript Plugins -->
  <script>
       function getLoad(){


       var stateId = $('#state').val();

$.getJSON('HelloWorld.action', {'stateId': stateId},
    function(data) {

           var divisionList = (data.regnList);

                var options = $("#regn");
                options.find('option')
    .remove()
    .end();
     options.append($("<option />").val("-1").text("--Select--"));
$.each(divisionList, function() {

    options.append($("<option />").val(this.regnId).text(this.regnName));
});
    }
);}
   </script>

<!-- jQuery-UI Dependent Scripts -->

    <body>
        State List <s:select name="stateId" list="stateList" id="state" listKey="stateId" onchange="getLoad()" listValue="stateName" headerKey="0" headerValue="--select--" />
        Regn List <s:select name="regnId"  list="regnList" listKey="regnId" id="regn" listValue="regnName" headerKey="0" headerValue="--select--" />
    </body>
</html>

Happy coding :)

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