我正在尝试从 xamarin android c# 向外部 PHP 脚本发送数据

Question

下面是我的代码login.cs

var user = User.Text;
var pass = Pass.Text;
 try
    {

        var postData = new List<KeyValuePair<string, string>>();
        postData.Add(new KeyValuePair<string, string>("username", user));
        postData.Add(new KeyValuePair<string, string>("password", pass));

        var content = new FormUrlEncodedContent(postData);

        HttpClient client = new HttpClient();

        client.BaseAddress = new Uri("Http://10.0.2.2:3307");

        var response = await client.PostAsync("Http://10.0.2.2:3307/login.php", content);
        result = response.Content.ReadAsStringAsync().Result;

    }
    catch (Exception ex)
    {
        await DisplayAlert("Error", ex.ToString(), "Ok");
        return;
    }

但我在下面的这一行中收到错误消息 Java.net.protocol: Unexpected status line "Y. "

    var response = await 
    client.PostAsync("Http://10.0.2.2:3307/login.php", content);

Answer 1

我设法解决了问题：

问题是我尝试连接到错误的端口并将其从 3307 更改为 80，而且 android 模拟器使用与 xampp 相同的 IP 地址，所以我不得不查看有关如何连接到外部本地服务器的文档。您可以在这里查看：

https://developer.android.com/studio/run/emulator-networking

而且我使用 json 来解析用户模型 class 而不是使用 KeyValuePair，因为它效果不佳。

var user = User.Text;
var pass = Pass.Text;
try{

    User us = new User();
    us.username = user;
    us.password = pass;

    string json = JsonConvert.SerializeObject(us);

    var content = new StringContent(json, Encoding.UTF8, "application/json");

    HttpClient client = new HttpClient();

    Uri uri = new Uri("Http://10.0.2.2:80/api/login.php");       

    client.BaseAddress = new Uri("Http://10.0.2.2:80");

    HttpResponseMessage response = await client.PostAsync(uri, cont);
    string  result =  await response.Content.ReadAsStringAsync();
    result = result.Trim('[', ']');

    dynamic output = JsonConvert.DeserializeObject(result);

}
catch (Exception ex)
{
    await DisplayAlert("Error", ex.ToString(), "Ok");
    return;
}

我正在尝试从 xamarin android c# 向外部 PHP 脚本发送数据

Am trying to send data to an external PHP script from xamarin android c#

c#

networking

android

httpclient

xamarin