如何使用json将ajax读取到servlet

Question

I need your help to read a JSON from JQuery AJAX to my servlet. I want to parse the internal data from the ajax call to jsonObject.

My code get facebook user information and pass the relavent data to json, then send AJAX call to servlet. How do I read these parameter in my servlet request?

 var jsonUserInfo = [];
      jsonUserInfo.push({"id"           :   (response["id"]         ? response["id"]            : "wnull")}); 
      jsonUserInfo.push({"first_name"   :   (response["first_name"] ? response["first_name"]    : "wnull")});  
      jsonUserInfo.push({"last_name"    :   (response["last_name"]  ? response["last_name"]     : "wnull")});  
      jsonUserInfo.push({"username" :   (response["username"]   ? response["username"]      : "wnull")});  
      jsonUserInfo.push({"birthday"     :   (response["birthday"]   ? response["birthday"]      : "wnull")});  
      jsonUserInfo.push({"gender"       :   (response["gender"]     ? response["gender"]        : "wnull")});  
      jsonUserInfo.push({"relationship_status": (response["relationship_status"] ? response["relationship_status"] : "wnull")});  
      jsonUserInfo.push({"timezone" :   (response["timezone"]   ? response["timezone"]      : "wnull")});  
      jsonUserInfo.push({"locale"   :   (response["locale"]     ? response["locale"]        : "wnull")});  
      jsonUserInfo.push({"verified"     :   (response["verified"]   ? response["verified"]      : "wnull")});  
      jsonUserInfo.push({"updated_time":    (response["updated_time"] ? response["updated_time"]: "wnull")});  
      jsonUserInfo.push({"interested_in": (response["interested_in"] ? response["interested_in"] : [])});  
      jsonUserInfo.push({"meeting_for":     (response["meeting_for"] ? response["meeting_for"]  : [])});

And here is my ajax call:

$.ajax({ url: "MainController",
     type:"POST",
     data: ({   "action"    : "setFacebookUserInfo",
                "userInfo"  : jsonUserInfo,
                "servlet"   : "UserProfile"
            }),
     dataType:"json",
     contentType: "application/x-www-form-urlencoded; charset=UTF-8",
     success: function(data){
        alert("here");
     },
     cache: true,
     ifModified: true
    });

How do I parse 'jsonUserInfo' object in my servlet with HttpServletRequest? I'm using JSON-org jar.

Thanks, Ido

Answer 1

I don't know about JSON-org but with JSON-simple you'd just do JSONObject jsonobject = (JSONObject)(new JSONParser().parse(jsonstring)); or JSONArray jsonarray = (JSONArray)(new JSONParser().parse(jsonstring));

In org.json this seems to be done as follows: JSONObject jsonobject = new JSONObject(new JSONTokener(jsonstring)); or JSONArray jsonarray = new JSONArray(new JSONTokener(jsonstring));