JSON数据(Web前端到Action)

//in JavaScript

 

function select(projectId,projectName,projectDetail){
	
  var submitData = "{projectId:"+projectId+",projectName:"+projectName+"}";
  $.ajax({ 
  	type: "POST",
          url: "<%=request.getContextPath()%>/projectbooking_add.do",               
          data: submitData,
          dataType:"json",//预期服务器返回的数据类型。
          contentType: "application/json; charset=utf-8",//发送信息至服务器时内容编码类型
          async: false,
          success: function(msg){
                //var jsonValue = eval("("+msg+")"); no need to handle.
                var addFeeBack = msg[0].addProject;
                var colsed =msg[0].colsed;
            	},
   	      error:function (msg){
               	var mes = 'can not add the new project task list.';
	            clearErrorMessage();
	            showErrorMessage(mes);
          	    }
          }); 
}                	

 

 

//in Action

import java.io.PrintWriter;
import net.sf.json.JSONArray;
public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {		
		/** Read a object from request */
		StringBuffer str = new StringBuffer();
		String line = null;
		BufferedReader reader = request.getReader();
		while ((line = reader.readLine())!= null){
			str.append(line);
		}
		String projectId="";
		String projectName="";
		JSONObject jsonObj = null;   	
		jsonObj = JSONObject.fromObject(str.toString());
		projectId = jsonObj.getString("projectId");
		projectName = jsonObj.getString("projectName");       	
		/** return the JSON object to JSP */
		AddProjectRecord record = new AddProjectRecord();
		record.setAddProject(true);		
		record.setMonWorkedHoursStatus(false);		
		jsonArrayObj = JSONArray.fromObject(record);
		response.setContentType("text/html");
		response.setCharacterEncoding("utf-8");
		PrintWriter out = response.getWriter();
		out.println(jsonArrayObj.toString());
		out.flush();
		out.close();
		
		return null;
}