android - 发生了一个或多个错误(到 192.168.0.18 的纯文本 HTTP 流量不允许 Xamarin 表单

Question

我需要帮助。我正在尝试使用“MultipartFormDataContent”和“HttpClient”上传文件，但出现错误。我看到有很多人处于同样的情况，但他们的解决方案对我不起作用。

event click to upload

private async void upload_Clicked(object sender, EventArgs e) {
    var content = new MultipartFormDataContent();
    content.Add(new StreamContent(_mediaFile.GetStream()),
        "\"file\"",
        $ "\"{_mediaFile.Path}\"");

    var httpClient = new HttpClient();

    var uploadServiceBaseAdress = "http://192.168.0.18/upload";

    Console.WriteLine(_mediaFile.Path);
    try {
        var httpResponseMessage = httpClient.PostAsync(uploadServiceBaseAdress, content);
        message.Text = httpResponseMessage.Result.Content.ToString();
    } catch (Exception error) {
        await DisplayAlert("non", error.Message, "ok");
    }
}

manifest

<application android:networkSecurityConfig="@xml/network_security_config"></application>

Resources > xml > network_security_config.xml

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
  <domain-config cleartextTrafficPermitted="true">
    <domain includeSubdomains="true">192.168.0.18</domain>
  </domain-config>
</network-security-config>

在线 var httpResponseMessage = httpClient.PostAsync(uploadServiceBaseAdress, content);我收到以下错误:

One or more errors occurred (Clea-text HTTP traffic to 192.168.0.18 not permitted Xamarin forms

有什么解决办法吗？

编辑它适用于使用 HTTPS 的生产服务器，但我需要它适用于开发服务器 (192.168.0.18)。我该如何解决这个问题

Answer 1

根据文件Network security configuration

实现这一点的简单方法是将此属性用于您的 AndroidManifest.xml，您允许所有请求的所有 http:android:usesCleartextTraffic="true"

<?xml version="1.0" encoding="utf-8"?>
<manifest ...>
<uses-permission android:name="android.permission.INTERNET" />
<application
    ...
    android:usesCleartextTraffic="true"
    ...>
    ...
</application>

另一种方法:用base-config替换domain-config

XML res/xml/network_security_config.xml

 <?xml version="1.0" encoding="utf-8"?>
 <network-security-config>
   <base-config cleartextTrafficPermitted="true" />
 </network-security-config>

并像这样在 AndroidManifest.xml 中使用:

<?xml version="1.0" encoding="utf-8"?>
<manifest ...>
<uses-permission android:name="android.permission.INTERNET" />
<application
    ...
    android:networkSecurityConfig="@xml/network_security_config"
    ...>
    ...
</application>
</manifest>