Php 服务器端获取不到Android端发送的post数据！！！求解

Question

Android  端 :           private static String urlString = "http://192.168.10.20:8080/xampp/nfcdemo/readjson.php";
          private String jsonStr = "[{'USERID':'Peter','EAN':'1234567891234','PRURL':['http://localhost:8080','http://localhost:8080']}]";         List<NameValuePair> entities = new ArrayList<NameValuePair>();        entities.add(new BasicNameValuePair("json", jsonStr));         HttpClient client = new DefaultHttpClient();
       
         HttpParams params = new BasicHttpParams();
         HttpConnectionParams.setConnectionTimeout(params,100000);
         HttpConnectionParams.setSoTimeout(params, 100000);
           
         HttpPost post = new HttpPost(urlString);
         post.setParams(params);
         post.setEntity(new UrlEncodedFormEntity(entities, "UTF-8"));
          
         HttpResponse resp = client.execute(post);
Php 服务器端:          <?php            $_POST['json']        >
   取不到数据  求高手解决

Answer 1

  <?php   var_dump($_POST['json']);  >