$(document).ready(function () {

$('#link').click(function() {
    $.ajax({
        url: "http://localhost:8085/KPIAdmin/kpis/get",
        type: "GET",
        data: {
            param1: "value1",
            param2: "value2"
        },
        success: function() {
            alert("Success!");
        },
        error: function (jqXHR, textStatus, errorThrown) {
            console.log(jqXHR);
            console.log(textStatus);
            console.log(errorThrown);
        },
    });
});

});

@RequestMapping(value="/get", method=RequestMethod.GET)
public void ajaxGetKPI(@RequestParam("param1") String param1, @RequestParam("param2") String param2) {

    System.out.println("param1: " + param1);
    System.out.println("param2: " + param2);
}

Object { readyState: 4, getResponseHeader: .ajax/v.getResponseHeader(), getAllResponseHeaders: .ajax/v.getAllResponseHeaders(), setRequestHeader: .ajax/v.setRequestHeader(), overrideMimeType: .ajax/v.overrideMimeType(), statusCode: .ajax/v.statusCode(), abort: .ajax/v.abort(), state: .Deferred/d.state(), always: .Deferred/d.always(), then: .Deferred/d.then(), 11 weitere… } ajaxGetKPI.js:24
"error" ajaxGetKPI.js:25
"Not Found"