1

我创建了包含身份验证的 .NET Framework API，我使用 Jetbrains Rider 启动了 Web API，并使用 Visual Studio 运行了我的 Xamarin.Forms 应用程序，我无法从我的 Web API 访问任何数据，也无法发布任何数据。

网络服务类：

private readonly HttpClient _client;

public AccountService()
{
    _client = new HttpClient
    {
        MaxResponseContentBufferSize = 256000
    };
}

public async Task RegisterAsync(string email, string password, string confirmPassword)
{
    var url = "http://169.254.80.80:61348/api/Account/Register";
    var model = new RegisterBindingModel()
    {
        Email = email,
        Password = password,
        ConfirmPassword = confirmPassword
    };

    var json = JsonConvert.SerializeObject(model);

    HttpContent content = new StringContent(json);

    content.Headers.ContentType = new MediaTypeHeaderValue("application/json");

    var response = await _client.PostAsync(url, content);
}

注册的启动

private async void Register()
{
    try
    {
        using (UserDialogs.Instance.Loading())
        {
            await _accountServices.RegisterAsync
                (Email, Password, ConfirmPassword);
        }
        UserDialogs.Instance.Alert("Register Successful");

        await _navigation.PushAsync(new LoginPage());
    }
    catch
    {
        UserDialogs.Instance.Alert("Something wrong happened, Try again");
    }
}

我尝试使用以下 IP 通过 Emulator 访问 localhost：

  • 10.0.3.2
  • 10.0.2.2
  • 169.254.80.80

而且我已经尝试了我的默认网关和我的本地 IP 地址，无论是否使用端口，无论使用邮递员，我都可以完美地使用我的 api。

我没有收到错误，但连接状态码不成功，我没有得到任何数据，新注册的帐户不会发布到 api。

编辑：至于答案，我已将方法更改为：

        public async Task<string> RegisterAsync(string email, string password, string confirmPassword)
    {
        var client = new HttpClient()
        {
            BaseAddress = new Uri("http://169.254.80.80:61348/")
        };
        var postData = new List<KeyValuePair<string, string>>();
        var nvc = new List<KeyValuePair<string, string>>();
        nvc.Add(new KeyValuePair<string, string>("email", email));
        nvc.Add(new KeyValuePair<string, string>("password", password));
        nvc.Add(new KeyValuePair<string, string>("confirmPassword", confirmPassword));
        var req = new HttpRequestMessage(HttpMethod.Post, "api/Account/Register") { Content = new FormUrlEncodedContent(nvc) };
        var res = await client.SendAsync(req);
        if (res.IsSuccessStatusCode)
        {
            string result = await res.Content.ReadAsStringAsync();
            string test = JsonConvert.DeserializeObject<string>(result);
            return test;
        }

        return null;
    }

我使用邮递员调用 web api，如下所示： http://localhost:61348/api/Account/Register

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1 回答 1

1

我总是更喜欢Newtonsoft Json.NET来执行 Web 请求，这是我在我的案例中实现的代码，它对我很有用。

public static async Task<string> ResgisterUser(string email, string password, string confirmPassword)
{
    var client = new HttpClient(new NativeMessageHandler());
    client.BaseAddress = new Uri("http://192.168.101.119:8475/");
    var postData = new List<KeyValuePair<string, string>>();
    var nvc = new List<KeyValuePair<string, string>>();
    nvc.Add(new KeyValuePair<string, string>("email", email));
    nvc.Add(new KeyValuePair<string, string>("password", password));
    nvc.Add(new KeyValuePair<string, string>("confirmPassword",confirmPassword));
    var req = new HttpRequestMessage(HttpMethod.Post, "api/Vendor/Register") { Content = new FormUrlEncodedContent(nvc) };
    var res = await client.SendAsync(req);
    if (res.IsSuccessStatusCode)
    {
        string result = await res.Content.ReadAsStringAsync();
        string test= JsonConvert.DeserializeObject<string>(result);
        return test;
    }
}

希望对你有效。

于 2018-08-01T06:05:35.143 回答