Question

我不明白$http服务是如何运作的。我有一个调用工厂的控制器，工厂调用WS函数。

如果我在调试模式下运行应用程序，工厂会调用WS函数，而WS函数会返回我认为是json对象的内容。

另一方面，当我在Web控制台中观看时，收到消息“undefined”。什么应该返回WS功能？或者我的工厂出了什么问题？

提前致谢。

这是VB.Net Web服务功能：

    <ScriptMethod(ResponseFormat:=ResponseFormat.Json, XmlSerializeString:=False)> _
<WebMethod()> _
Public Function getLogin(ByVal email As String, ByVal password As String) As String
        Dim dt As New Data.DataTable
        Dim result As String = ""
        Using con As New SqlConnection(sConn)
            'Dim sql As String = "Select id_usuario, nombre_usuario id_tipo_usuario from binder_usuarios where email = @email and password = @password"
            Dim sql As String = "Select * from binder_usuarios where email = @email and password = @password"
            Dim cmd As New SqlCommand
            cmd.CommandText = sql
            cmd.Connection = con
            cmd.Parameters.AddWithValue("@email", email)
            cmd.Parameters.AddWithValue("@password", password)
            Dim dataAdapter As New SqlDataAdapter(cmd)
            dataAdapter.Fill(dt)
            If dt.Rows.Count > 0 Then
                result = JsonConvert.SerializeObject(dt, New JavaScriptDateTimeConverter())
                Return result
            Else
                result = "e"
            End If
            Return result
        End Using
    End Function

WS函数返回一个字符串：

"[{"id_usuario":3,"nombre_usuario":"Quethzel","apellido_paterno":"Diaz","apellido_materno":"Zarate","id_area":1,"id_tipo_usuario":1,"password":"sa","email":"hqdiaz@lis.com.mx"}]"

这是工厂：

function fcQAuth($http, $q, $window) {
    return {
        loginAuth: function(credentials) {
            $http.post('../ws/wsReact.asmx/getLogin', credentials)
            .success(function(data, status) {
                return "your data it's Ok, in da face !";
            })
            .error(function(data, status) {
                return "don't give up Nigga";
            });

            //return "myUser. " + credentials.email + ", myPass." + credentials.password;
        }
    }
}; // end fcQAuth factory

这是控制器，它叫工厂：

function loginCtrl($scope, $q, $http, $location, fcQAuth) {

    $scope.loginUser = function() {
        var credentials = {
            email: $scope.user.email === '' || $scope.user.email === undefined ? 0 : $scope.user.email,
            password: $scope.user.password === '' || $scope.user.password === undefined ? 0 : $scope.user.password
        };
        $scope.userInfo = fcQAuth.loginAuth(credentials);
        console.log($scope.userInfo);
    };
};

Answer 1

http.post是一个异步调用，当执行控制器中的console.log时，http.post还没有返回。试试这个：

返回工厂的承诺：

function fcQAuth($http, $q, $window) {
    return {
        loginAuth: function(credentials) {
            return $http.post('../ws/wsReact.asmx/getLogin', credentials);
        }
    };
}

获取控制器中成功回调的数据：

function loginCtrl($scope, $q, $http, $location, fcQAuth) {

        var credentials = {
            email: $scope.user.email === '' || $scope.user.email === undefined ? 0 : $scope.user.email,
            password: $scope.user.password === '' || $scope.user.password === undefined ? 0 : $scope.user.password
        };
        fcQAuth.loginAuth(credentials).then(function(data){
             $scope.userInfo = data;
             console.log($scope.userInfo);
        });
};

了解$ http服务

1 个答案: