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最近在调用腾讯云的人像动漫化接口，感觉挺好玩的，自己去看文档写了一下，遇到了各种问题，最后都解决了 ，遇到最多的就是签名错误（AuthFailure.SignatureFailure），都是看文档不看完导致的，要注意签名参数的顺序、请求参数的值必须进行url编码之内的，甚至我还sb的把调用签名加密方法的参数顺序搞混了，害得我找了好久 -_-|| ，还好都解决了。下面展示代码：
常规的GET和POST的请求方式：
using System;using System.Collections.Generic;using System.Drawing;using System.IO;using System.Linq;using ;using System.Security.Cryptography;using System.Text;using System.Threading.Tasks;using System.Web;namespace ConsoleApp2{class Main_3{static void Main(string[] args){string action = "FaceCartoonPic";//接口名称string secretid = "你的SecretId";//SecretIdstring secretKey = "你的SecretKey";//SecretKeystring version = "-03-04";//版本string region = "ap-guangzhou";//云服务器区域，离你越近越好string url = "/";//接口地址string host = "";//域名Random rd = new Random();string nonce = rd.Next().ToString();///随机正整数，用于防止重放攻击string timestamp = GetCurrentTimestamp();//时间戳string filename = @"F:\XXX\XXX\xy.jpg";//图片路径string imgbase64 = ImgToBase64(filename);//base64字串要是图片转base64的方式才行，文件转base64的方式会报URL过长的错Dictionary<string, string> postdata = new Dictionary<string, string>();postdata.Add("Action", action);postdata.Add("Image", imgbase64);postdata.Add("Language", "zh-CN");postdata.Add("Nonce", nonce);postdata.Add("Region", region);postdata.Add("SecretId", secretid);//dic.Add("SignatureMethod", "HmacSHA1");//加密方式 默认HmacSHA1postdata.Add("Timestamp", timestamp);postdata.Add("Version", version);string data = string.Empty;SortedDictionary<string, string> sortDc = new SortedDictionary<string, string>(postdata, StringComparer.Ordinal);//排序 加密的数据必须排序foreach (var item in sortDc){if (!string.IsNullOrEmpty(data)){data += "&";}data += string.Format("{0}={1}", item.Key, item.Value);}string qm = $"POST{host}/?" + data;//POST请求的加密前字串string signature = Sign(secretKey, qm);postdata.Add("Signature", signature);//添加上签名字段data = string.Empty;foreach (var item in postdata){if (!string.IsNullOrEmpty(data)){data += "&";}data += string.Format("{0}={1}", item.Key, HttpUtility.UrlEncode(item.Value));//参数的值必须要进行URL编码}Dictionary<string, string> headers = new Dictionary<string, string>();//headers.Add("Host", host);//请求头带有Hoststring res = Post(url, data);//Post的请求方式//string res = Get(url + "?" + data);Get的请求方式Console.WriteLine(res);Console.ReadKey();}/// <summary>/// 进行SHA1签名加密/// </summary>/// <param name="signKey">secretKey</param>/// <param name="secret">需要加密的字符串</param>/// <returns></returns>public static string Sign(string signKey, string secret){string signRet = string.Empty;using (HMACSHA1 mac = new HMACSHA1(Encoding.UTF8.GetBytes(signKey))){byte[] hash = puteHash(Encoding.UTF8.GetBytes(secret));signRet = Convert.ToBase64String(hash);}return signRet;}/// <summary>/// 图片转Base64/// </summary>/// <param name="filename">文件路径</param>/// <returns></returns>public static string ImgToBase64(string filename){string base64_3;MemoryStream ms = new MemoryStream();try{Bitmap bmp = new Bitmap(filename);bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);byte[] arr = new byte[ms.Length];ms.Position = 0;ms.Read(arr, 0, (int)ms.Length);base64_3 = Convert.ToBase64String(arr);bmp.Dispose();return base64_3;}catch (Exception ex){return ex.Message;}finally{ms.Close();}}/// <summary>///获取时间戳/// </summary>/// <returns></returns>public static string GetCurrentTimestamp(){//TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);//return Convert.ToInt64(ts.TotalSeconds).ToString();var number = 10000 * 1000;return ((DateTime.Now.ToUniversalTime().Ticks - 621355968000000000) / number).ToString();}/// <summary>/// 常规Post请求/// </summary>/// <param name="url"></param>/// <param name="content"></param>/// <returns></returns>public static string Post(string url, string postData){// 创建一个WebRequest对象WebRequest request = WebRequest.Create(url);// 设置请求方法为POSTrequest.Method = "POST";// 将数据转换为字节数组byte[] byteArray = System.Text.Encoding.UTF8.GetBytes(postData);// 设置请求内容类型request.ContentType = "application/x-www-form-urlencoded";//设置代理request.Proxy = new WebProxy("代理IP", 端口);// 设置请求内容长度request.ContentLength = byteArray.Length;// 获取请求流并写入数据Stream dataStream = request.GetRequestStream();dataStream.Write(byteArray, 0, byteArray.Length);dataStream.Close();// 发送请求并获取响应WebResponse response = request.GetResponse();// 读取响应流StreamReader reader = new StreamReader(response.GetResponseStream());string responseText = reader.ReadToEnd();// 关闭响应流和请求对象reader.Close();response.Close();return responseText;}/// <summary>/// 常规Get请求/// </summary>/// <param name="url"></param>/// <param name="content"></param>/// <returns></returns>public static string Get(string url){string result = "";HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);request.Method = "GET";request.Proxy = new WebProxy("代理IP", 端口);//设置代理using (HttpWebResponse response = (HttpWebResponse)request.GetResponse()){using (Stream stream = response.GetResponseStream()){using (StreamReader reader = new StreamReader(stream)){result = reader.ReadToEnd();}}}return result;}}}
使用SDK的方式：
需要去neget上安装：TencentCloud
然后引用上，下面是代码：
using System;using System.Collections.Generic;using System.Drawing;using System.IO;using System.Linq;using ;using .Http;using System.Security.Cryptography;using System.Text;using System.Threading.Tasks;using mon;using mon.Profile;using TencentCloud.Ft.V;using TencentCloud.Ft.V.Models;namespace ConsoleApp2{class Main_1{static void Main(string[] args){try{// 密钥可前往官网控制台 https://console./cam/capi 进行获取Credential cred = new Credential{SecretId = "你的SecretId",SecretKey = "你的SecretKey"};// 实例化一个client选项，可选的，没有特殊需求可以跳过ClientProfile clientProfile = new ClientProfile();// 实例化一个http选项，可选的，没有特殊需求可以跳过HttpProfile httpProfile = new HttpProfile();httpProfile.Endpoint = ("");clientProfile.HttpProfile = httpProfile;clientProfile.HttpProfile.WebProxy = "http://你的代理IP:端口";//设置代理// 实例化要请求产品的client对象,clientProfile是可选的FtClient client = new FtClient(cred, "ap-guangzhou", clientProfile);// 实例化一个请求对象,每个接口都会对应一个request对象FaceCartoonPicRequest req = new FaceCartoonPicRequest();string filename = @"F:\XXX\XXX\xy.jpg";//图片路径string imgbase64 = ImgToBase64(filename);req.Image = imgbase64;// 返回的resp是一个FaceCartoonPicResponse的实例，与请求对象对应FaceCartoonPicResponse resp = client.FaceCartoonPicSync(req);// 输出json格式的字符串回包string res = AbstractModel.ToJsonString(resp);Console.WriteLine(res);}catch (Exception e){Console.WriteLine(e.ToString());}Console.ReadKey();}static string ImgToBase64(string filename){string base64_3;MemoryStream ms = new MemoryStream();try{Bitmap bmp = new Bitmap(filename);bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);byte[] arr = new byte[ms.Length];ms.Position = 0;ms.Read(arr, 0, (int)ms.Length);base64_3 = Convert.ToBase64String(arr);bmp.Dispose();return base64_3;}catch (Exception ex){return ex.Message;}finally{ms.Close();}}}}
代码就是这些，挺简单的，就是调接口时一些小细节没注意到，导致了很多次都是失败。
