I am using JQuery's post(), but my servlet doesn't see the array that I'm passing as a parameter.
My javascript looks like this:
var myArray = ['1', '2'];
$.post('action.do', {"arrayData":myArray, "mode":"insert"});
In my servlet:
System.out.println(request.getParameterMap());
which outputs:
{mode=insert}
I've also tried
$.post('action.do', {"arrayData[]":myArray, "mode":"insert"});
and
$.post('action.do', {"arrayData":$(myArray).serializeArray(), "mode":"insert"});
I had this problem. I resolved it just by adding brackets to "arrayData" parameter server-side. On client:
$.post('action.do', {arrayData:myArray, mode:"insert"});
Please, note, on the client-side arrayData parameter is without brackets.
On server:
String[] arrayData=request.getParameterValues("arrayData[]");
This worked for me!
Try to use
$.post('action.do', {"arrayData":myArray, "mode":"insert"});
and on server
String[] arrayData=request.getParameterValues("arrayData");
Here is how I pass json to my servlet, using json2.js from here. In the servlet you can then use gson, or jackson to automatically convert you json to an instance of suitable java class autonoumously.
var jsonData = $("#myform").toObject();
var strJson = JSON.stringify(jsonData);
$.ajax({
cache:false,
type: 'POST',
url: myUrl,
data:strJson,
contentType: "application/json",
success: function(data) {
//mySuccessHanlder
}
});
