C# HttpClient、HTTP/2和客户端证书.pfx、.p12

如何在.Net Core>=1.0中重新编写这段c#代码

我读到HttpClient不支持

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.Net Framework 4.5版本

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解决方案：-.Net核心版本 虽然不得不将证书从.p12更改为.pfx（私钥+SSL证书），但最终还是成功地让它工作了。它不适用于。p12

    private FormUrlEncodedContent GetLoginBodyAsContent(string username, string password)
    {
        var postData = new List<KeyValuePair<string, string>>();
        postData.Add(new KeyValuePair<string, string>("username", username));
        postData.Add(new KeyValuePair<string, string>("password", password));
        return new FormUrlEncodedContent(postData);
    }

    private async Task<LoginResponse> Login(string username, string password, string certFilename)
    {
        var clientHandler = GetClientHandler();

        var handler = AddCert(clientHandler, certFilename);
        var client = InitHttpClientInstance(handler, this.AppKey);

        var content = GetLoginBodyAsContent(username, password);

        var result = await client.PostAsync("/api/certlogin", content);
        result.EnsureSuccessStatusCode();
        var jsonSerialiser = new DataContractJsonSerializer(typeof(LoginResponse));
        var stream = new MemoryStream(await result.Content.ReadAsByteArrayAsync());
        var response = (LoginResponse)jsonSerialiser.ReadObject(stream);
        return response;
    }
    private HttpClientHandler AddCert(HttpClientHandler clientHandler, string certFilename)
    {
        var certPfx = new X509Certificate2(certFilename);
        clientHandler.SslProtocols = SslProtocols.Tls12;
        clientHandler.ClientCertificateOptions = ClientCertificateOption.Manual;
        clientHandler.ClientCertificates.Add(certPfx);

        clientHandler.ServerCertificateCustomValidationCallback += 
            (HttpRequestMessage req, X509Certificate2 cert2, X509Chain chain, SslPolicyErrors err) => { return true; };

        return clientHandler;
    }
    private HttpClient InitHttpClientInstance(HttpMessageHandler clientHandler, string appKey, string baseUrl = DefaultAuthServiceUrl)
    {
        var client = new HttpClient(clientHandler);
        client.BaseAddress = new Uri(baseUrl);
        client.DefaultRequestHeaders.Accept.Clear();
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
        client.DefaultRequestHeaders.Add("X-Application", appKey);
        client.DefaultRequestHeaders.ExpectContinue = true;
        client.DefaultRequestHeaders.Add("Connection", "Close");

        return client;
    }
    private HttpClientHandler GetClientHandler()
    {
        var clientHandler = new HttpClientHandler();
        return clientHandler;
    } 

private FormUrlEncodedContent GetLoginBodyContent（字符串用户名、字符串密码）
{
var postData=新列表（）；
添加（新的KeyValuePair（“用户名”，username））；
添加（新的KeyValuePair（“密码”，password））；
返回新的FormUrlEncodedContent（postData）；
}
专用异步任务登录（字符串用户名、字符串密码、字符串文件名）
{
var clientHandler=GetClientHandler（）；
var handler=AddCert（clientHandler，certFilename）；
var client=InitHttpClientInstance（处理程序，this.AppKey）；
var content=getLoginBodyContent（用户名、密码）；
var result=wait client.PostAsync（“/api/certlogin”，content）；
result.EnsureSuccessStatusCode（）；
var jsonSerialiser=新的数据契约jsonserializer（typeof（LoginResponse））；
var stream=newmemoryStream（wait result.Content.ReadAsByteArrayAsync（））；
var响应=（LoginResponse）jsonSerialiser.ReadObject（流）；
返回响应；
}
私有HttpClientHandler-AddCert（HttpClientHandler-clientHandler，字符串certFilename）
{
var certPfx=新的X509Certificate2（certFilename）；
clientHandler.SslProtocols=SslProtocols.Tls12；
clientHandler.ClientCertificateOptions=ClientCertificateOptions.Manual；
clientHandler.ClientCertificates.Add（certPfx）；
clientHandler.ServerCertificateCustomValidationCallback+=
（HttpRequestMessage-req，X509Certificate2-cert2，X509Chain-chain，SslPolicyErrors-err）=>{return true；}；
回程钳；
}
私有HttpClient InitHttpClientInstance（HttpMessageHandler-clientHandler，string-appKey，string-baseUrl=DefaultAuthServiceUrl）
{
var客户端=新的HttpClient（clientHandler）；
client.BaseAddress=新Uri（baseUrl）；
client.DefaultRequestHeaders.Accept.Clear（）；
client.DefaultRequestHeaders.Accept.Add（新的MediaTypeWithQualityHeaderValue（“应用程序/json”）；
client.DefaultRequestHeaders.Add（“X-Application”，appKey）；
client.DefaultRequestHeaders.ExpectContinue=true；
client.DefaultRequestHeaders.Add（“连接”，“关闭”）；
返回客户；
}
私有HttpClientHandler GetClientHandler（）
{
var clientHandler=新的HttpClientHandler（）；
回程钳；
} 

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似乎.net内核意味着让生活变得困难。。样板太多，容易出错。

试试看。您链接到的问题不相关。这是关于Windows UWP应用程序的。你试过了吗，它甚至没有用.net内核编译。CS1061“HttpWebRequest”不包含“ClientCertificates”的定义，也没有扩展方法……您必须提供完整的问题描述，包括任何编译错误。您链接到的问题无效。从您的问题中不清楚您是否确实尝试过-听起来好像您发现并发出了链接问题，并停止了尝试链接问题也是关于HttpClient的，而不是HttpWebRequest。你试过使用HttpClient吗？为什么要使用HttpWebRequest？如何重新编写这段c代码？我应该说清楚。

    private FormUrlEncodedContent GetLoginBodyAsContent(string username, string password)
    {
        var postData = new List<KeyValuePair<string, string>>();
        postData.Add(new KeyValuePair<string, string>("username", username));
        postData.Add(new KeyValuePair<string, string>("password", password));
        return new FormUrlEncodedContent(postData);
    }

    private async Task<LoginResponse> Login(string username, string password, string certFilename)
    {
        var clientHandler = GetClientHandler();

        var handler = AddCert(clientHandler, certFilename);
        var client = InitHttpClientInstance(handler, this.AppKey);

        var content = GetLoginBodyAsContent(username, password);

        var result = await client.PostAsync("/api/certlogin", content);
        result.EnsureSuccessStatusCode();
        var jsonSerialiser = new DataContractJsonSerializer(typeof(LoginResponse));
        var stream = new MemoryStream(await result.Content.ReadAsByteArrayAsync());
        var response = (LoginResponse)jsonSerialiser.ReadObject(stream);
        return response;
    }
    private HttpClientHandler AddCert(HttpClientHandler clientHandler, string certFilename)
    {
        var certPfx = new X509Certificate2(certFilename);
        clientHandler.SslProtocols = SslProtocols.Tls12;
        clientHandler.ClientCertificateOptions = ClientCertificateOption.Manual;
        clientHandler.ClientCertificates.Add(certPfx);

        clientHandler.ServerCertificateCustomValidationCallback += 
            (HttpRequestMessage req, X509Certificate2 cert2, X509Chain chain, SslPolicyErrors err) => { return true; };

        return clientHandler;
    }
    private HttpClient InitHttpClientInstance(HttpMessageHandler clientHandler, string appKey, string baseUrl = DefaultAuthServiceUrl)
    {
        var client = new HttpClient(clientHandler);
        client.BaseAddress = new Uri(baseUrl);
        client.DefaultRequestHeaders.Accept.Clear();
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
        client.DefaultRequestHeaders.Add("X-Application", appKey);
        client.DefaultRequestHeaders.ExpectContinue = true;
        client.DefaultRequestHeaders.Add("Connection", "Close");

        return client;
    }
    private HttpClientHandler GetClientHandler()
    {
        var clientHandler = new HttpClientHandler();
        return clientHandler;
    }