javascript - request a json parameter to java to convert a json array to java array -

basicaly need to pass java string array javascipt array, after pass array via json jsp page, in jsp parse array java array.

i try following:

jsonarray arr = new jsonarray(); jsonobject tmp;      for(int = 0; < invoiceid.length; i++) {          tmp = new jsonobject();          tmp.put("invoiceid", invoiceid[i]);          arr.add(tmp);     } 

following javascript in same page:

var invoiceid = json.stringify(<%=arr%>);` $.ajax({                      type: 'get',                      url: 'crudsettlement.jsp',                      data: {                          winvoiceid: invoiceid                      },                      async: false,                      datatype: 'json',                      success: function(json) {                          $("#msg").val(json.msg);                      }                  }); 

in page crudsettlement.jsp try following:

jsonobject jobj = new jsonobject(request.getparameter("mydata")); 

but take folloing error incompatible types: string cannot converted map

any idea on how to convert json array java array? use json-simple.

do not know json , here rough logic

jsonarray arr = new jsonarray(request.getparameter("mydata")); list<string> jsonlist = new arraylist<string>(); (int = 0; < arr.length(); i++) {     jsonlist.add(arr.getjsonobject(i).getstring("invoice")); } string[] invoices = jsonlist.toarray(new string[0]); 

update , tried below seems work :

string json = " [{\"invoiceid\":\"0147708\"}]";  jsonarray array = (jsonarray) new jsonparser().parse(json); //jsonarray array = (jsonarray) jsonobject.get("invoiceid");  list<string> jsonlist = new arraylist<string>(); (int = 0; < array.size(); i++) {     jsonlist.add(((jsonobject) array.get(i)).tostring()); } string[] invoices = jsonlist.toarray(new string[0]);