[JAVA] Memo to get with Struts2 + Ajax

Introduction

Completely just a note I use it when fetching data without screen transition

environment

Struts2.0.11.2 (too old ...) Java 8 (old ...)

coding

JSP

sample.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<input type="button" value="Send" onClick="getSampleData();" />

jsonArray.jsp

<!--Do I have to receive the response like this ...?-->
<%@ page language="java" contentType="text/javascript; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<s:property value="jsonArray" escape="false"/>

JavaScript(Ajax)

sample.js

function getSampleData() {
  new Ajax.Request("GetSampleData.action", {
    method : 'GET',
    onSuccess : function(res) {
      var arr = JSON.Parse(res.responseText);
      arr.forEach(function(data){
        console.log(data.id + ":" + data.name);
      }
    },
    onError : function() {
      console.log("Error");
    },
    onComplete : function() {
      console.log("Complete");
    }
  })
}

struts.xml

struts.xml

<action name="GetSampleData" class="PATH.BuildSampleData">
  <result>PATH/jsonArray.jsp</result>
</action>

Action Class

BuildSampleData.java

package hogehoge.fugafuga

import java.util.ArrayList;
import net.sf.json.JSONObject;

public class BuildLoginData {
  private ArrayList<JSONObject> jsonArray = new ArrayList<JSONObject>();

  //Execute if Action method is not specified()Is called
  public String execute() throws Exception {
    JSONObject tarou = new JSONObject();	
    tarou.put("id", 1);
    tarou.put("name", "tarou");
    jsonArray.add(tarou);

    JSONObject hanako = new JSONObject();	
    hanako.put("id", 2);
    hanako.put("name", "hanako");
    jsonArray.add(hanako);

    return "success";
  }

  public ArrayList<JSONObject> getJsonArray() {
    return jsonArray;
  }

  public void setJsonArray(ArrayList<JSONObject> jsonArray) {
    this.jsonArray = jsonArray;
  }
}

Impressions

It's annoying to have to prepare jsp when receiving the response from the server. Is there any other way ...?