Asp.Net Core 实现谷歌翻译ApI 免费版
由于谷歌翻译官方API是付费版本，本着免费和开源的精神。分享一下用 Net Core 实现谷歌翻译API的代码。
项目引用的Nuget 包：
ChakraCore.NET
Newtonsoft.Json
JavaScriptEngineSwitcher.ChakraCore.Native.win-x86(特别说明一下"win-x86",代表程序运行环境。)
翻译地址：https://translate.google.cn (国内可以访问)
参数说明：
text：待翻译文本
sl：需要翻译的语言(中文：zh-CN，英文：en)
tl： 翻译结果的语言(中文：zh-CN，英文：en)
1 public class HttpHelper 2 { 3 /// <summary> 4 /// 请求 5 /// </summary> 6 /// <param name="url">地址</param> 7 /// <param name="args">参数</param> 8 /// <returns></returns> 9 public static string GetRequest(string url, CookieContainer cookieContainer, Dictionary<string, dynamic> args) 10 { 11 try 12 { 13 if (args.Count > 0) 14 { 15 var argStr = string.Empty; 16 17 foreach (var item in args) 18 { 19 if (item.Key == null || item.Value == null) 20 { 21 continue; 22 } 23 argStr = $"{argStr}{item.Key}={item.Value}&"; 24 } 25 26 url = $"{url}?{argStr.TrimEnd('&')}"; 27 } 28 29 HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); 30 request.Method = "get"; 31 request.Timeout = 100000; 32 request.CookieContainer = cookieContainer; 33 request.UserAgent = GetUserAgent(); 34 request.Headers.Add("X-Requested-With:XMLHttpRequest"); 35 request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8"; 36 using (var webResponse = (HttpWebResponse)request.GetResponse()) 37 { 38 using (var reader = new StreamReader(webResponse.GetResponseStream(), Encoding.UTF8)) 39 { 40 41 return reader.ReadToEnd(); 42 } 43 } 44 } 45 catch (Exception) 46 { 47 return string.Empty; 48 } 49 } 50 51 /// <summary> 52 /// 用户代理 53 /// </summary> 54 /// <returns></returns> 55 private static string GetUserAgent() 56 { 57 var userAgents = new List<string> 58 { 59 "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/22.0.1207.1 Safari/537.1", 60 "Mozilla/5.0 (X11; CrOS i686 2268.111.0) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.57 Safari/536.11", 61 "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.6 (KHTML, like Gecko) Chrome/20.0.1092.0 Safari/536.6", 62 "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.6 (KHTML, like Gecko) Chrome/20.0.1090.0 Safari/536.6", 63 "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/19.77.34.5 Safari/537.1", 64 "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.9 Safari/536.5", 65 "Mozilla/5.0 (Windows NT 6.0) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.36 Safari/536.5", 66 "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1063.0 Safari/536.3", 67 "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1063.0 Safari/536.3", 68 "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_0) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1063.0 Safari/536.3", 69 "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1062.0 Safari/536.3", 70 "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1062.0 Safari/536.3", 71 "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.1 Safari/536.3", 72 "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.1 Safari/536.3", 73 "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.1 Safari/536.3", 74 "Mozilla/5.0 (Windows NT 6.2) AppleWebKit/536.3 (KHTML, like Gecko) Chrome/19.0.1061.0 Safari/536.3", 75 "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.24 (KHTML, like Gecko) Chrome/19.0.1055.1 Safari/535.24", 76 "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/535.24 (KHTML, like Gecko) Chrome/19.0.1055.1 Safari/535.24", 77 "Mozilla/5.0 (Macintosh; U; Mac OS X Mach-O; en-US; rv:2.0a) Gecko/20040614 Firefox/3.0.0 ", 78 "Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5; en-US; rv:1.9.0.3) Gecko/2008092414 Firefox/3.0.3", 79 "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1) Gecko/20090624 Firefox/3.5", 80 "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.14) Gecko/20110218 AlexaToolbar/alxf-2.0 Firefox/3.6.14", 81 "Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5; en-US; rv:1.9.2.15) Gecko/20110303 Firefox/3.6.15", 82 "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0.1) Gecko/20100101 Firefox/4.0.1", 83 "Opera/9.80 (Windows NT 6.1; U; en) Presto/2.8.131 Version/11.11", 84 "Opera/9.80 (Android 2.3.4; Linux; Opera mobi/adr-1107051709; U; zh-cn) Presto/2.8.149 Version/11.10", 85 "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/531.21.8 (KHTML, like Gecko) Version/4.0.4 Safari/531.21.10", 86 "Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US) AppleWebKit/533.17.8 (KHTML, like Gecko) Version/5.0.1 Safari/533.17.8", 87 "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.19.4 (KHTML, like Gecko) Version/5.0.2 Safari/533.18.5", 88 "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0", 89 "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0)", 90 "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)", 91 "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)" 92 }; 93 94 return userAgents.OrderBy(x => Guid.NewGuid()).First(); 95 } 96 }
1 /// <summary> 2 /// 翻译 助手 3 /// </summary> 4 public static class TranslationHelper 5 { 6 /// <summary> 7 /// Chakra 上下文 8 /// </summary> 9 private static readonly ChakraContext _chakraContext; 10 11 /// <summary> 12 /// Cookie 13 /// </summary> 14 private static readonly CookieContainer _cookieContainer; 15 16 /// <summary> 17 /// 请求地址 18 /// </summary> 19 private static readonly string _baseUrl; 20 21 /// <summary> 22 /// 静态 23 /// </summary> 24 static TranslationHelper() 25 { 26 var runtime = ChakraRuntime.Create(); 27 28 _baseUrl = "http://translate.google.cn/translate_a/single"; 29 _cookieContainer = new CookieContainer(); 30 _chakraContext = runtime.CreateContext(true); 31 32 var basePath = PlatformServices.Default.Application.ApplicationBasePath; 33 var jsFileText = File.ReadAllText($@"{basePath}\gettk.js"); 34 35 _chakraContext.RunScript(jsFileText); //运行脚本 36 } 37 38 /// <summary> 39 /// 获取翻译结果(需要翻译的文字默认使用中文) 40 /// </summary> 41 /// <param name="toLang">语言</param> 42 /// <param name="originalText">待翻译的文本</param> 43 /// <returns></returns> 44 public static string GetTranslation(this string toLang, string originalText) 45 { 46 if (string.IsNullOrEmpty(toLang)) 47 { 48 return toLang; 49 } 50 if (string.IsNullOrEmpty(originalText)) 51 { 52 return originalText; 53 } 54 55 return GetTranslation("zh-cn", toLang, originalText); 56 57 } 58 59 /// <summary> 60 /// 获取翻译结果 61 /// </summary> 62 /// <param name="fromLang">需要翻译的语言</param> 63 /// <param name="toLang">翻译结果的语言</param> 64 /// <param name="originalText">待翻译文本</param> 65 /// <returns></returns> 66 public static string GetTranslation(this string fromLang, string toLang, string originalText) 67 { 68 var args = new Dictionary<string, dynamic> 69 { 70 { "client", "t" }, 71 { "sl", fromLang }, 72 { "tl", toLang }, 73 { "dt", "t" }, 74 { "tk", GetTK(originalText) }, 75 { "text", HttpUtility.UrlEncode(originalText) } 76 }; 77 78 var result = HttpHelper.GetRequest(_baseUrl, _cookieContainer, args); 79 80 return result.FormattedJson(); 81 } 82 83 /// <summary> 84 /// 获取TK 85 /// </summary> 86 /// <param name="originalText"></param> 87 /// <returns></returns> 88 private static string GetTK(string originalText) 89 { 90 _chakraContext.GlobalObject.WriteProperty("originalText", originalText); 91 return _chakraContext.RunScript("getTK(originalText)"); 92 } 93 94 /// <summary> 95 /// 格式化Json 96 /// </summary> 97 /// <param name="jsonStr">Json</param> 98 /// <returns></returns> 99 private static string FormattedJson(this string jsonStr) 100 { 101 if (string.IsNullOrEmpty(jsonStr)) 102 { 103 return string.Empty; 104 } 105 106 var array = JsonConvert.DeserializeObject<JArray>(jsonStr); 107 108 var result = array[0][0][0].ToString(); 109 110 return result; 111 } 112 113 }
参考：C#实现谷歌翻译API
