DEMO: Mail/Balance - 邮件余额查询

概览

• 支持.Net版本：2.0以上
• 依赖三方库 Newtonsoft.Json.dll

代码示例

using System;
using System.Text;
using System.Net;
using System.IO;
using System.Collections.Generic;
using System.Web;
using System.Security.Cryptography;
using Newtonsoft.Json.Linq;
namespace SUBMAILDEMO2021
{
    public class MailBalanceDemo
    {
        private const string API_MailBalance = "https://api-v4.mysubmail.com/balance/mail.json";
        private const string API_Timestamp = "https://api-v4.mysubmail.com/service/timestamp.json";
        public void Balance()
        {
            string appid = "16xxx";
            string appkey = "5d5d513716xxxxb7e4c7a5a6";
            string sign_type = "md5";             //加密方式有normal，md5，sha1
            Dictionary<string, string> d = new Dictionary<string, string>();
            d.Add("appid", appid);
            //如果不使用加密方式或者signature传normal则signature参数传入appkey的值
            if (sign_type.Equals("md5") || sign_type.Equals("sha1"))
            {
                string timestamp = JObject.Parse(HttpGet(API_Timestamp))["timestamp"].ToString();
                d.Add("sign_type", sign_type);
                d.Add("timestamp", timestamp);
                if (sign_type.Equals("md5"))
                {
                    d.Add("signature", GetMD5Signature(FormatRequest(d), appid, appkey));
                }
                else
                {
                    d.Add("signature", GetSHA1Signature(FormatRequest(d), appid, appkey));
                }
            }
            else
            {
                d.Add("signature", appkey);
            }
            string response = Httppost(API_MailBalance, d);
            Console.WriteLine(response);

        }


        //http post请求
        public string Httppost(string url, Dictionary<string, string> parameters)
        {
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;//创建请求对象
            request.Method = "POST";//请求方式
            request.ContentType = "application/x-www-form-urlencoded";//链接类型
                                                                      //构造查询字符串
            if (!(parameters == null || parameters.Count == 0))
            {
                StringBuilder buffer = new StringBuilder();
                bool first = true;
                foreach (string key in parameters.Keys)
                {

                    if (!first)
                    {
                        buffer.AppendFormat("&{0}={1}", HttpUtility.UrlEncode(key, Encoding.UTF8), HttpUtility.UrlEncode((string)parameters[key], Encoding.UTF8));
                    }
                    else
                    {
                        buffer.AppendFormat("{0}={1}", HttpUtility.UrlEncode(key, Encoding.UTF8), HttpUtility.UrlEncode((string)parameters[key], Encoding.UTF8));
                        first = false;
                    }
                }
                Console.WriteLine("requestParam：" + buffer.ToString());
                byte[] data = Encoding.UTF8.GetBytes(buffer.ToString());
                //写入请求流
                using (Stream stream = request.GetRequestStream())
                {
                    stream.Write(data, 0, data.Length);
                    stream.Close();
                }
            }
            HttpWebResponse hwp = request.GetResponse() as HttpWebResponse;
            string response = GetResponseString(hwp);
            hwp.Close();
            return response;
        }


        //获取服务器时间戳
        public string HttpGet(string url)
        {
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;//创建请求对象
            request.Method = "GET";//请求方式 
            request.ContentType = "application/x-www-form-urlencoded";
            HttpWebResponse hwp = request.GetResponse() as HttpWebResponse;
            string response = GetResponseString(hwp);
            hwp.Close();
            return response;
        }

        public string GetResponseString(HttpWebResponse webresponse)
        {
            using (Stream s = webresponse.GetResponseStream())
            {
                StreamReader reader = new StreamReader(s, Encoding.UTF8);
                return reader.ReadToEnd();
            }
        }


        //加密参数升序
        public string FormatRequest(Dictionary<string, string> data)
        {
            StringBuilder builder = new StringBuilder();
            if (data.Count > 0)
            {
                List<KeyValuePair<string, string>> lst = new List<KeyValuePair<string, string>>(data);
                lst.Sort(delegate (KeyValuePair<string, string> s1, KeyValuePair<string, string> s2)
                    {
                        return s1.Key.CompareTo(s2.Key);
                    });
                foreach (KeyValuePair<string, string> kvp in lst)
                {
                    if (kvp.Value != null)
                    {
                        builder.Append(string.Format("{0}={1}&", kvp.Key, kvp.Value));

                    }
                }
            }
            string formatData = builder.ToString();
            Console.WriteLine(formatData);
            if (formatData.Length > 0)
            {
                return formatData.Substring(0, formatData.Length - 1);
            }
            return null;
        }

        //获取md5加密后的签名字符串
        private string GetMD5Signature(string data, string appid, string appkey)
        {
            string signStr = string.Format("{0}{1}{2}{3}{4}", appid, appkey, data, appid, appkey);
            MD5 md5 = new MD5CryptoServiceProvider();
            byte[] fromData = Encoding.GetEncoding("utf-8").GetBytes(signStr);
            byte[] targetData = md5.ComputeHash(fromData);
            StringBuilder sBuilder = new StringBuilder();
            for (int i = 0; i < targetData.Length; i++)
            {
                sBuilder.Append(targetData[i].ToString("x2"));
            }
            return sBuilder.ToString();
        }

        //获取sha1加密后的签名字符串
        private string GetSHA1Signature(string data, string appid, string appkey)
        {
            string signStr = string.Format("{0}{1}{2}{3}{4}", appid, appkey, data, appid, appkey);
            SHA1 sha1 = new SHA1CryptoServiceProvider();
            byte[] fromData = Encoding.GetEncoding("utf-8").GetBytes(signStr);
            byte[] targetData = sha1.ComputeHash(fromData);
            StringBuilder sBuilder = new StringBuilder();
            for (int i = 0; i < targetData.Length; i++)
            {
                sBuilder.Append(targetData[i].ToString("x2"));
            }
            return sBuilder.ToString();
        }
    }
}