XHR Action

gistfile1.txt

  public ActionForward execute(ActionMapping mapping, ActionForm inForm, HttpServletRequest request, HttpServletResponse response) throws Exception {
		log.debug("hello ajax!");

		DatatablesCriterias dc = DatatablesCriterias.getFromRequest(request);
		log.debug(dc);
		
		AssettypeManager mgr = (AssettypeManager) getBean("assettypeManager");
		
		List<AssetType> tmp = mgr.getAssetTypeList();
		List<AssetType> assetType = new ArrayList<AssetType>();
		int i=0;
		for (AssetType at: tmp) {
			assetType.add(at);
			if (i++ >= dc.getDisplaySize()) {
				break;
			}
		}
		
		long count = tmp.size();
		Long countFiltered = (long)assetType.size();
		DataSet<AssetType> dataset = new DataSet<AssetType>(assetType, count, countFiltered);
		
		DatatablesResponse<AssetType> resp = DatatablesResponse.build(dataset, dc);
				
		
		//get output
		//Accept: application/json, text/javascript, */*; q=0.01\r\n
	    response.setContentType("application/json");
	    PrintWriter out = response.getWriter();
	    
	    //jackson converter
		ObjectMapper mapper = new ObjectMapper();
		mapper.writeValue(out, resp);
	    
		out.write("\r\n");
		out.flush();
		
/*	    ArrayList<Object> list = new ArrayList<Object>();
	    
	    out.write('[');
	    JSONObject obj=new JSONObject();
	    obj.put("sEcho", resp.getsEcho());
	    obj.put("iTotalRecords", resp.getiTotalRecords()());
	    obj.put("iTotalDisplayRecords", assetType.size());
	    
	    boolean first=true;
	    for (AssetType at: assetType) {
	    	if (first) {
	    		first=false;
	    	} else {
	    		out.write(',');
	    	}
			  list.clear();
			  list.add(at.getId());
			  list.add(at.getName());
			  list.add(at.getEpcStatus());
			  JSONValue.writeJSONString(list, out);	    	
	    }

	    out.write(']');
	    out.write('}');
	    
		/*resp.getsEcho()
		StringBuffer json = new StringBuffer(4096);
		
		JSONValue.writeJSONString(value, out)
		
		json.append("{");
		json.append("\"sEcho\": 2,");
		json.append("\"iTotalRecords\": 3,");
		json.append("\"iTotalDisplayRecords\": 3,");
		json.append("\"aaData\": [");
		
		json.append("[");
		json.append("\"1122\",");
		json.append("\"HORST\"");
		json.append("],");
		json.append("[");
		json.append("\"1123\",");
		json.append("\"HORST2\"");
		json.append("],");
		json.append("[");
		json.append("\"1124\",");
		json.append("\"HORST3\"");
		json.append("]");
		
		json.append("]");
		json.append("}");
		
	    // Write the XML to response
	    out.println(json);*/
		Writer w = new StringWriter();
		mapper.writeValue(w, resp);
		log.debug("JACKSSON: "+w);
		
		Gson gson = new Gson();
		log.debug("GSON: "+gson.toJson(resp));		
			    
	    log.debug("done");
	    return null;
	}