jquery ajax清除缓存的方法

function cityListChange(cityCode){

          //{lon=121.491121, name=上海, province=上海市, telPrefix=021, provinceid=310000, code=310100, lat=31.243466, platePrefix=沪}



        $.ajax({

            type: "get",

            dataType: "json",

            url: "${contextPath}/carUpload/cityList/" + cityCode +"?random="+Math.random(), //url后加入随机数参数，防止缓存,

            success: function (result) {



                $("#cityLon").val(result.data["lon"]);

                $("#cityLat").val(result.data["lat"]);

                $("#province").val(result.data["provinceid"]);

                $("#city").val(result.data["code"]);

                $("#cityTelCode").val(result.data["telPrefix"]);

                $("#platePrefix").val(result.data["platePrefix"]);

                

                var lon = result.data["lon"];

                var lat = result.data["lat"];

                $("#carAddressImg").attr("src", "http://restapi.amap.com/v3/staticmap?location="+lon+","+lat+"&zoom=8&size=550*350&key=ee95e52bf08006f63fd29bcfbcf21df0");

                

            }

        });

      }

注意：+"?random="+Math.random(), //url后加入随机数参数，防止缓存,