C#发起带证书的https请求

在对接API过程中,需要用到对方提供的xxx.p12证书,以及对应的密码,解决方案如下:

/// <summary>
/// 带证书请求
/// </summary>
/// <param name="url">请求地址</param>
/// <param name="method">请求方式</param>
/// <param name="content">请求的字符串</param>
/// <param name="headers">请求头</param>
/// <param name="certificatePath">证书路径</param>
/// <param name="certPassword">证书密码</param>
/// <returns>响应结果</returns>
/// <example>
/// Console.WriteLine(HttpWebRequestWithCertificate("https://host:port/path","POST", "{JsonData}", null,@"......\xxx.p12","123456"));
/// </example>

public string HttpWebRequestWithCertificate(string url, string method, string content, Dictionary<string, string> headers, string certificatePath, string certPassword)
{
    string result = string.Empty;
    try
    {
        ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | (SecurityProtocolType)768 | (SecurityProtocolType)3072 | (SecurityProtocolType)0x300 | (SecurityProtocolType)0xC00;
        ServicePointManager.ServerCertificateValidationCallback += (q, w, e, r) => r == SslPolicyErrors.None;
        X509Certificate2 cer = new X509Certificate2(certificatePath, certPassword, X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable);
        byte[] bytes = System.Text.Encoding.UTF8.GetBytes(content);
        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
        request.ClientCertificates.Add(cer);//必须先最先配置ClientCertificates字段,否则会报有关SSL/TLS错
        request.ContentType = "application/json";
        request.Method = method;
        request.ContentLength = bytes.Length;
        if (headers != null && headers.Count > 0)
        {
            foreach (var item in headers)
            {
                 request.Headers.Add(item.Key, item.Value);
            }
        }
        using (Stream requestStream = request.GetRequestStream())
        {
            requestStream.Write(bytes, 0, bytes.Length);
            requestStream.Close();
        }
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        Stream responseStream = response.GetResponseStream();
        if (responseStream != null)
        {
            StreamReader reader = new StreamReader(responseStream, System.Text.Encoding.UTF8;
            result = reader.ReadToEnd().Trim();
            reader.Close();
            responseStream.Close();
            request.Abort();
            response.Close();
        }
    }
    catch (Exception ex)
    {
        return ex.Message + ex.StackTrace;
    }
    return result;
}

参考链接:
C#发起带证书的http请求（通常用于微信发红包）
java使用安全证书进行接口联调