php - I get duplicate error when I post same string using NameValuePair

I am posting strings to server using Http post, when I post a single string using NameValuePair it works perfectly but when I repeat the same strings I get error of duplicate strings, and does not upload to server. I need any that can accept duplicate strings and its equivalent JSONParser.

    List<NameValuePair>params = new ArrayList<NameValuePair>();
                params.add(new BasicNameValuePair("message", "me"));

This is the error I get when I try to post same string again:

Error parsing data org.json.JSONException: Value Duplicate of type java.lang.String cannot be converted to JSONObject

379

Answer

Solution:

The JSON standard doesn't allow to have two entries with the same name. May u want to use an array instead?

Edit:
Think what you want to do is something like that:

<?php
$json = json_encode(
      1 => array(
          'one',
          'two'
      )
);
?>

So its

{
"1": ["one","two"]
}

instead of

{
"1":"one",
"1":"two"
}
?>

Or do you mean on the Android site? I can recomment to use JSON-Simple, thats light & easy. Example:

      //import org.json.simple.JSONObject;
      //import org.json.simple.JSONArray;

      JSONObject obj=new JSONObject();
      JSONArray list = new JSONArray();
      list.add("bar");
      list.add(new Integer(100));
      list.add(new Double(1000.21));
      list.add(new Boolean(true));
      list.add(null);
      obj.put("foo", list);
      System.out.print(obj);

Result: {"foo": ["foo",100,1000.21,true,null]}

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