C# 调用科大讯飞语音转写接口上传音频文件转文字可直接用
科大讯飞语音转写，录音文件识别，新用户可领取5个小时时长免费识别，以下代码可直接用；
WebAPI接口调用，用的是HttpClient
using System; using System.Collections.Generic; using System.ComponentModel; using System.IO; using System.Linq; using System.Net; using System.Net.Http; using System.Net.Http.Headers;using System.Security.Cryptography; using System.Text; using System.Text.RegularExpressions; using System.Threading; using System.Threading.Tasks; namespace ConsoleApp0//科大讯飞语音转写接口调用 { class Program { static string appId = "*******"; static string appKey = "****************";//SecretKey static void Main(string[] args) { var filePath = @"E:\A\smallCan.wav"; var taskid = Prepare(filePath); UploadFile(taskid, filePath); MergeFile(taskid); Thread.Sleep(1000 * 60 * 2);//等待时间 GetProgress(taskid); GetResult(taskid); Console.ReadKey(); } static string Prepare(string filePath) { FileInfo t = new FileInfo(filePath); var fileSize = t.Length; var fileName = Path.GetFileName(filePath); var url = @"http://raasr.xfyun.cn/api/prepare"; TimeSpan mTimeSpan = DateTime.Now.ToUniversalTime() - new DateTime(1970, 1, 1, 0, 0, 0); long time = (long)mTimeSpan.TotalSeconds; var baseString = appId + time.ToString(); //MD5加密 var md5Str = Md5Encrypt(baseString); var signa = HMACSHA1Text2(md5Str, appKey);//HMACSHA1加密兼base64 var dic = new Dictionary<string, string>(); dic.Add("app_id", $"{appId}"); dic.Add("signa", $"{signa}"); dic.Add("ts", time.ToString()); dic.Add("file_len", $"{fileSize}"); dic.Add("file_name", $"{fileName}"); dic.Add("slice_num", "1"); dic.Add("language", "cn_cantonese");//广东话参数 var result = string.Empty; using (HttpClient client = new HttpClient()) { HttpContent httpContent = new FormUrlEncodedContent(dic); httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/x-www-form-urlencoded"); httpContent.Headers.ContentType.CharSet = "utf-8"; HttpResponseMessage responseMessage = client.PostAsync(url, httpContent).Result; result = responseMessage.Content.ReadAsStringAsync().Result; } Console.WriteLine(result); var taskId = Regex.Match(result, @"(?<=""data"":"").+?(?="")").ToString(); Console.WriteLine(taskId); return taskId; } public static void UploadFile(string taskId, string filePath) { var fileName = Path.GetFileName(filePath); var uploadUrl = @"https://raasr.xfyun.cn/api/upload"; var signa2 = GetSigna(); var ts2 = GetTs(); var sliceId = GetSliceId(); using (HttpClient client = new HttpClient()) { var content = new MultipartFormDataContent(); //content.Headers.ContentType = MediaTypeHeaderValue.Parse("multipart/form-data");//这条不能加 content.Add(new StringContent($"{appId}"), "app_id");//参数 content.Add(new StringContent($"{signa2}"), "signa"); content.Add(new StringContent($"{ts2}"), "ts"); content.Add(new StringContent($"{taskId}"), "task_id"); content.Add(new StringContent($"{sliceId}"), $"slice_id"); FileStream fStream = File.Open(filePath, FileMode.Open, FileAccess.Read); content.Add(new StreamContent(fStream, (int)fStream.Length), "content", fileName);//文件,content为文件参数名称 var res = client.PostAsync(uploadUrl, content).GetAwaiter().GetResult().Content.ReadAsStringAsync().Result; Console.WriteLine(res); } } public static void MergeFile(string taskId) { var url = @"https://raasr.xfyun.cn/api/merge"; var signa = GetSigna(); var ts = GetTs(); var dic = new Dictionary<string, string>(); dic.Add("app_id", $"{appId}"); dic.Add("signa", $"{signa}"); dic.Add("ts", ts.ToString()); dic.Add("task_id", $"{taskId}"); var result = string.Empty; using (HttpClient client = new HttpClient()) { HttpContent httpContent = new FormUrlEncodedContent(dic); httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/x-www-form-urlencoded"); httpContent.Headers.ContentType.CharSet = "utf-8"; HttpResponseMessage responseMessage = client.PostAsync(url, httpContent).Result; result = responseMessage.Content.ReadAsStringAsync().Result; } Console.WriteLine(result); } public static void GetProgress(string taskId) { var url = "https://raasr.xfyun.cn/api/getProgress"; var signa = GetSigna(); var ts = GetTs(); var dic = new Dictionary<string, string>(); dic.Add("app_id", $"{appId}"); dic.Add("signa", $"{signa}"); dic.Add("ts", ts.ToString()); dic.Add("task_id", $"{taskId}"); var result = string.Empty; using (HttpClient client = new HttpClient()) { HttpContent httpContent = new FormUrlEncodedContent(dic); httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/x-www-form-urlencoded"); httpContent.Headers.ContentType.CharSet = "utf-8"; HttpResponseMessage responseMessage = client.PostAsync(url, httpContent).Result; result = responseMessage.Content.ReadAsStringAsync().Result; } Console.WriteLine(result); } public static void GetResult(string taskId) { var url = "https://raasr.xfyun.cn/api/getResult"; var signa = GetSigna(); var ts = GetTs(); var dic = new Dictionary<string, string>(); dic.Add("app_id", $"{appId}"); dic.Add("signa", $"{signa}"); dic.Add("ts", ts.ToString()); dic.Add("task_id", $"{taskId}"); var result = string.Empty; using (HttpClient client = new HttpClient()) { HttpContent httpContent = new FormUrlEncodedContent(dic); httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/x-www-form-urlencoded"); httpContent.Headers.ContentType.CharSet = "utf-8"; HttpResponseMessage responseMessage = client.PostAsync(url, httpContent).Result; result = responseMessage.Content.ReadAsStringAsync().Result; } Console.WriteLine(result); } public static string Md5Encrypt(string str) { MD5 md5 = MD5.Create(); byte[] buffer = Encoding.UTF8.GetBytes(str);//将字符串转成字节数组 byte[] byteArray = md5.ComputeHash(buffer);//调用加密方法 StringBuilder sb = new StringBuilder(); foreach (byte b in byteArray)//遍历字节数组 { sb.Append(b.ToString("x2"));//将字节数组转成16进制的字符串。X表示16进制，2表示每个16字符占2位 } return sb.ToString(); } //加密后再次Base64编码 public static string HMACSHA1Text2(string text, string key) { //HMACSHA1加密 HMACSHA1 hmacsha1 = new HMACSHA1(); hmacsha1.Key = System.Text.Encoding.UTF8.GetBytes(key); byte[] dataBuffer = System.Text.Encoding.UTF8.GetBytes(text); byte[] hashBytes = hmacsha1.ComputeHash(dataBuffer); return Convert.ToBase64String(hashBytes); } public static string GetSigna() { TimeSpan mTimeSpan = DateTime.Now.ToUniversalTime() - new DateTime(1970, 1, 1, 0, 0, 0); long time = (long)mTimeSpan.TotalSeconds; var baseString = appId + time.ToString(); //MD5加密 var md5Str = Md5Encrypt(baseString); var signa = HMACSHA1Text2(md5Str, appKey);//HMACSHA1加密兼base64 return signa; } public static string GetTs() { TimeSpan mTimeSpan = DateTime.Now.ToUniversalTime() - new DateTime(1970, 1, 1, 0, 0, 0); long time = (long)mTimeSpan.TotalSeconds; return time.ToString(); } public static string GetSliceId() { string sliceId = "aaaaaaaaa`"; char[] ch = sliceId.ToCharArray(); for (int i = 0, j = sliceId.Length - 1; i < sliceId.Length && j >= 0; i++) { if (ch[j] != 'z') { ch[j]++; break; } else { ch[j] = 'a'; j--; continue; } } return new String(ch); } } }
