using Newtonsoft.Json;
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using System;
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using System.Collections.Generic;
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using System.Configuration;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading.Tasks;
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namespace HDLMonitorService.Helper
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{
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public class HttpHp
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{
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/// <summary>
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/// 发送POST请求
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="url"></param>
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/// <param name="reqDataStr"></param>
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/// <returns></returns>
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public static T Post<T>(string url, string reqDataStr) where T : class
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{
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return HttpRequet<T>(url, reqDataStr, "POST", "application/json;charset=UTF-8");
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}
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/// <summary>
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/// 发送HTTP请求
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="url"></param>
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/// <param name="reqDataStr"></param>
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/// <param name="token"></param>
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/// <returns></returns>
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public static T HttpRequet<T>(string url, string reqDataStr, string Method, string contentType) where T : class
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{
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ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true;
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var request = (HttpWebRequest)WebRequest.Create(url);
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request.Method = Method;
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request.ContentType = contentType;
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request.ContentLength = 0;
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if (reqDataStr != null)
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{
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var reqData = Encoding.UTF8.GetBytes(reqDataStr);
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request.ContentLength = reqData.Length;
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using (var stream = request.GetRequestStream())
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{
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stream.Write(reqData, 0, reqData.Length);
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}
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}
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var response = (HttpWebResponse)request.GetResponse();
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var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();
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return JsonConvert.DeserializeObject<T>(responseString);
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}
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/// <summary>
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/// 2020-11-02
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/// 基础服务的接口都要校验sign
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/// 计算sign签名
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/// </summary>
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/// <returns></returns>
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public static string GetSignRequestJson(object requestObj, Dictionary<string, object> paramDictionary = null)
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{
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try
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{
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//1. 将model实体转为Dictionary<string, object>
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if (paramDictionary == null)
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{
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paramDictionary = Newtonsoft.Json.JsonConvert.DeserializeObject<Dictionary<string, object>>(Newtonsoft.Json.JsonConvert.SerializeObject(requestObj));
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}
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//2. 计算sign
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if (paramDictionary != null)
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{
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paramDictionary.Add("appKey", ConfigurationManager.AppSettings["AppKey"].ToString());
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paramDictionary.Add("timestamp", GetTimestamp());
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//2.1 字典升序
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paramDictionary = paramDictionary.OrderBy(o => o.Key).ToDictionary(o => o.Key, p => p.Value);
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//2.2 拼接按URL键值对
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string str = string.Empty;
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foreach (KeyValuePair<string, object> item in paramDictionary)
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{
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//Value为null不参加校验
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if (item.Value != null)
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{
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//Value.ToString()为null或者""也不参加校验
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//if (!string.IsNullOrEmpty(item.Value.ToString()) && (item.Value is string || item.Value.GetType().IsValueType))
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//{
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//检测当前参数是否需要参与校验
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if (IfValueNeedSign(item.Value.ToString()))
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{
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//如果是bool类型，要转小写
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if (item.Value is bool)
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{
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str += item.Key + "=" + item.Value.ToString().ToLower() + "&";
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}
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else
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{
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str += item.Key + "=" + item.Value.ToString() + "&";
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}
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}
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}
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}
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//2.3 拼接SECRET_KEY
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str = str.Substring(0, str.Length - 1) + ConfigurationManager.AppSettings["SecretKey"].ToString();
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//2.4 MD5转换+转小写
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var signstr = SignMD5Encrypt(str);
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paramDictionary.Add("sign", signstr);
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var signResult = Newtonsoft.Json.JsonConvert.SerializeObject(paramDictionary);
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return signResult;
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}
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else
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{
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return "";
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}
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}
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catch
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{
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return "";
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}
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}
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/// <summary>
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/// 判断当前值是否需要参与签名，保持跟云端一致
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/// 空字符串不参与
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/// 数组,集合,对象不参与
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/// </summary>
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/// <param name="valueStr"></param>
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/// <returns></returns>
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static bool IfValueNeedSign(string valueStr)
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{
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if (string.IsNullOrEmpty(valueStr) || valueStr.StartsWith("{") || valueStr.StartsWith("["))
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{
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return false;
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}
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return true;
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}
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static long GetTimestamp()
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{
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return (long)(DateTime.Now - new DateTime(1970, 1, 1, 0, 0, 0)).TotalMilliseconds;
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}
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static string SignMD5Encrypt(string str)
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{
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byte[] result = Encoding.UTF8.GetBytes(str.Trim()); //tbPass为输入密码的文本框
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var md5 = new MD5CryptoServiceProvider();
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byte[] output = md5.ComputeHash(result);
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string passwordMD5 = BitConverter.ToString(output).Replace("-", string.Empty); //tbMd5pass为输出加密文本的文本框
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return passwordMD5.Trim().ToLower();
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}
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}
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}
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