Android 使用cordova phonegap应用程序。创建了一个ajax调用，ajax成功但没有响应数据

我正在使用cordova phonegap应用程序。创建了一个ajax调用，ajax成功但没有响应数据

它显示警报“ValidateUser失败。请检查internet连接。”

请给我一个解决方案

我的ajax代码如下所示：

 var username = $('#uname').val();
 var password = $('#pass').val();
 var serviceUrl = 'www.example.com/api'; 

//alert(username+'-----'+password);
        $.ajax({
            type: "GET",
            contentType: "application/json; charset-uf8 ",
            dataType: "json",
            crossDomain: true,
            url: serviceUrl + "/ValidateUser/?username=" + username + "&password=" + password+"&id=",
            success: function (result) {
                //alert('ValidateUser-success');
                debugger;
                if (result) {
                    var res = result;
                    if (res.Status == 0) {
                        alert("Error: " + res.Error);
                    }
                    else {

                        var user = res.User;


                             var UserID = user.UserID;
                             var UserName = user.UserName;
                             var Password = password;
                             var Description = user.Description;
                             var isGroup = user.isGroup;
                             var Expires = user.Expires;
                             var Disabled = user.Disabled;
                             var DateExpires = user.DateExpires;
                             var DateCreated = user.DateCreated;
                             var homepage = user.homepage;

                                database.transaction(function (tx) {
                                    var sqlQuery = "INSERT INTO Users

(UserID,UserName,Password,Description,isGroup,[Expries],Disabled,DateExpires,DateCreated,homepage) values(" + 

user.UserID + ",'" + username + "','" + password + "','" + user.Description + "','" + user.isGroup + "','" + 

user.Expires + "','" + user.Disabled + "','" + user.DateExpires + "','" + user.DateCreated + "','" + 

user.homepage + "')";
                    InsertUserDB(tx, sqlQuery);
                }, InsertFail, InsertSuccess);

                window.localStorage.setItem("userid",user.UserID );
                window.localStorage.setItem("username",user.UserName );
                window.localStorage.setItem("password",password );


                        }
                    }
                }
                debugger;
                window.location.href='home.html';
            },
            error: function (xhr) {
                debugger;
                alert('ValidateUser failed. Please check internet connection. ' + xhr.responseText);
            }
        });

---

您正在应用白名单系统吗？是的，我已经添加了白名单系统。我在config.xml文件中添加了插件url。你在寻求帮助吗？还是你想玩游戏？白名单系统共有8个部分。你刚才提到了一个。