jQuery ajax json parseerror有效的json数据

Question

Hi im having parseerror ajax call using jquery - servlet. im at lost. oh please what to do. and data from servlet is a valid json {"success":true,"SelectPartid":{"partidAll":"DA04321;"}}

if i discard the dataType: 'json', this work fine. but then i cant use this code

if (data.success) { alert("SUCCESS!!"); //alert("success" + data.SelectPartid.partidAll); }

so, the ajax,please advise

$("#select1").change(function() {
    dataString = "Optionselected=" + $("#select1 option:selected").text();
    alert("dataString : " + dataString);
    $.ajax({
        type: 'POST',
        url: 'SelectAjx',
        data: dataString,
        dataType: 'json',
        contentType: "application/json; charset=utf-8",
        context: this,
        success: function(data, textStatus, jqXHR) {
            if (data.success) {
                alert("SUCCESS!!");
                //alert("success" + data.SelectPartid.partidAll);
            }
        },
        error: function(jqXHR, exception) {
            //alert('[jqXHR:' + jqXHR + '], [textStatus:' + textStatus + '], [thrownError:' + errorThrown + '])');
            if (jqXHR.status === 0) {
                alert('Not connect.\n Verify Network.');
            } else if (jqXHR.status == 404) {
                alert('Requested page not found. [404]');
            } else if (jqXHR.status == 500) {
                alert('Internal Server Error [500].');
            } else if (exception === 'parsererror') {
                alert('Requested JSON parse failed.');
            } else if (exception === 'timeout') {
                alert('Time out error.');
            } else if (exception === 'abort') {
                alert('Ajax request aborted.');
            } else {
                alert('Uncaught Error.\n' + jqXHR.responseText);
            }
        }
    });
});

Answer 1

application/json this solve it cant believe i waste 2 hours because of this line. the ajax doesnt cause the error..its in the servlet.

this is the line

response.setContentType("text/html;charset=UTF-8");

what i just dd is change it to

response.setContentType("application/json;charset=UTF-8");

and there the error swooshd away.thank god

-copy from my last comment, im sure this gonna be useful to someone.