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上篇文章我们介绍了
.NET应用系统的国际化-基于Roslyn抽取词条、更新代码
系统国际化改造整体设计思路如下:
- 提供一个工具,识别前后端代码中的中文,形成多语言词条,按语言、界面、模块统一管理多有的多语言词条
- 提供一个翻译服务,批量翻译多语言词条
- 提供一个词条服务,支持后端代码在运行时根据用户登录的语言,动态获取对应的多语言文本
- 提供前端多语言JS生成服务,按界面动态生成对应的多语言JS文件,方便前端VUE文件使用。
- 提供代码替换工具,将VUE前端代码中的中文替换为$t("词条ID"),后端代码中的中文替换为TermService.Current.GetText("词条ID")
本篇文章我们重点和大家分享多语言翻译服务的设计和实现。
一、业务背景
通过上一篇文章,我们把sln解决方案中各个Project下的中文文本,识别成大量的多语言词条。
这些多语言词条临时存储在数据库中,我们要对这个临时结果集,通过多语言翻译服务,按支持的语言,翻译成多语言词条。
对应的类图设计:
对应的词条管理界面:
因此我们需要一个多语言词条翻译服务,实现词条的批量、快速机器翻译。
二、多语言词条翻译服务
首先,抽象一个翻译接口II18NTermTranslateService- /// <summary>
- /// 词条翻译服务接口
- /// </summary>
- public interface II18NTermTranslateService
- {
- string Translate(string text, string language);
- }
复制代码 设计一个翻译服务提供者类,通过Facade模式,对外统一提供翻译服务TranslateServiceProvider- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Text;
- using System.Threading.Tasks;
- using I18N.SPI;
- namespace I18N.Translation
- {
- /// <summary>
- /// 翻译服务提供者
- /// </summary>
- public class TranslateServiceProvider
- {
- public static II18NTermTranslateService GetTranslateService(Translater translater)
- {
- switch (translater)
- {
- case Translater.Youdao:
- default:
- return new YoudaoTranslateService();
- case Translater.Baidu:
- return new BaiduTranslateService();
- case Translater.Google:
- return new GoogleTranslateService();
- case Translater.Azure:
- return new AzureTranslateService();
- }
- }
- public static II18NTermTranslateService GetYoudaoTranslateService()
- {
- return new YoudaoTranslateService();
- }
- public static II18NTermTranslateService GetGoogleTranslateService()
- {
- return new GoogleTranslateService();
- }
- public static II18NTermTranslateService GetBaiduTranslateService()
- {
- return new BaiduTranslateService();
- }
- public static II18NTermTranslateService GetAzureTranslateService()
- {
- return new AzureTranslateService();
- }
- }
- }
复制代码 这里的Translater是个枚举- public enum Translater
- {
- Youdao,
- Baidu,
- Google,
- Azure
- }
复制代码 三、多语言词条翻译服务-Azure翻译服务
这里我们使用Azure认知服务中的服务服务,实现上面抽象好的翻译接口- using Newtonsoft.Json;
- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Net.Http;
- using System.Text;
- using I18N.SPI;
- namespace I18N.Translation
- {
- /// <summary>
- /// Azure翻译服务
- /// </summary>
- /// <remarks>
- /// https://learn.microsoft.com/zh-cn/azure/cognitive-services/translator/text-translation-overview
- /// </remarks>
- public class AzureTranslateService : II18NTermTranslateService
- {
- private readonly string _endpoint = "https://api.cognitive.microsofttranslator.com";
- private readonly string _key = "XXXXXXXXXXXXXX";
- public string Translate(string text, string language)
- {
- return Post(text, language);
- }
- private string Post(string text, string language)
- {
- using (var client = new HttpClient())
- {
- using (var request = new HttpRequestMessage())
- {
- var url = $"/translate?api-version=3.0&to={language}";
- request.Method = HttpMethod.Post;
- request.RequestUri = new Uri($"{_endpoint}{url}");
- object[] body = { new { Text = text } };
- var requestBody = JsonConvert.SerializeObject(body);
- request.Content = new StringContent(requestBody, Encoding.UTF8, "application/json");
- request.Headers.Add("Ocp-Apim-Subscription-Key", _key);
- var response = client.SendAsync(request).ConfigureAwait(false).GetAwaiter().GetResult();
- if (!response.IsSuccessStatusCode)
- {
- return null;
- }
- string result = response.Content.ReadAsStringAsync().Result;
- var translationResults = JsonConvert.DeserializeObject<TranslationResult[]>(result);
- if (translationResults.Length > 0)
- {
- return translationResults[0].Translations.FirstOrDefault()?.Text;
- }
- }
- }
- return null;
- }
- }
- }
复制代码 这里用到了几个参数类- namespace I18N.Translation
- {
- public class TranslationResult
- {
- public DetectedLanguage DetectedLanguage { get; set; }
- public Translation[] Translations { get; set; }
- }
- public class DetectedLanguage
- {
- public string Language { get; set; }
- public float Score { get; set; }
- }
- public class Translation
- {
- public string Text { get; set; }
- public string To { get; set; }
- }
- }
复制代码 四、多语言词条翻译服务-有道云翻译服务
这里我们同时实现了有道云翻译服务- using System;
- using System.Linq;
- using System.Collections.Generic;
- using System.Net.Http;
- using System.Web;
- using I18N.SPI;
- namespace I18N.Translation
- {
- /// <summary>
- /// 有道云翻译服务
- /// </summary>
- /// <remarks>
- /// https://ai.youdao.com/DOCSIRMA/html/%E8%87%AA%E7%84%B6%E8%AF%AD%E8%A8%80%E7%BF%BB%E8%AF%91/API%E6%96%87%E6%A1%A3/%E6%96%87%E6%9C%AC%E7%BF%BB%E8%AF%91%E6%9C%8D%E5%8A%A1/%E6%96%87%E6%9C%AC%E7%BF%BB%E8%AF%91%E6%9C%8D%E5%8A%A1-API%E6%96%87%E6%A1%A3.html
- /// </remarks>
- public class YoudaoTranslateService : II18NTermTranslateService
- {
- private string appKey = "XXXXXX";
- private string appKeyMY = "XXXXXXXXX";
- public string Translate(string text, string language)
- {
- return Post(text, language);
- }
- public void Translate(List<I18NTerm> terms, string language)
- { }
- private string Post(string text, string language)
- {
- var salt = ToUnixTime(DateTime.Now);
- var sign = Encryptor.MD5Hash(appKey + text + salt + appKeyMY).ToUpper();
- switch (language.ToLower())
- {
- case "zh-cn": language = "zh-CHS"; break;
- case "en-us": language = "EN"; break;
- }
- HttpClient client = new HttpClient();
- var encodedText = System.Uri.EscapeUriString(text);
- var url = @"https://openapi.youdao.com/api?q=" + encodedText + "&from=auto&to=" + language + "&appKey=" + appKey + "&salt=" + salt + "&sign=" + sign;
- var result = client.GetStringAsync(url).Result;
- //{"returnPhrase":["系统"],"query":"系统","errorCode":"0","l":"zh-CHS2en","tSpeakUrl":"https://openapi.youdao.com/ttsapi?q=system&langType=en&sign=F1945F1CB2D0AEEE40B1277E6C871770&salt=1665580681639&voice=4&format=mp3&appKey=48045ce9f1d5f934&ttsVoiceStrict=false","web":[{"value":["System","lineage","Systematic problem-solving","Windows XP"],"key":"系统"},{"value":["Operating System","OS","Linux"],"key":"操作系统"},{"value":["Domain Name System","Domain Name Server","Domain System"],"key":"域名系统"}],"requestId":"cf134fc6-812b-49ab-a97a-85e56e6697cd","translation":["system"],"dict":{"url":"yddict://m.youdao.com/dict?le=eng&q=%E7%B3%BB%E7%BB%9F"},"webdict":{"url":"http://mobile.youdao.com/dict?le=eng&q=%E7%B3%BB%E7%BB%9F"},"basic":{"phonetic":"xì tǒng","explains":["system"]},"isWord":true,"speakUrl":"https://openapi.youdao.com/ttsapi?q=%E7%B3%BB%E7%BB%9F&langType=zh-CHS&sign=DF2CDF4E306FC8C4F8E224C6E7436B26&salt=1665580681639&voice=4&format=mp3&appKey=48045ce9f1d5f934&ttsVoiceStrict=false"}
- var dataResult = Newtonsoft.Json.JsonConvert.DeserializeObject<YoudaoResult>(result);
- if (dataResult != null)
- {
- return dataResult.translation.FirstOrDefault();
- }
- return null;
- }
- private long ToUnixTime(DateTime dateTime)
- {
- var start = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
- return Convert.ToInt64((dateTime.ToUniversalTime() - start).TotalMilliseconds);
- }
- }
- }
复制代码 有道云的翻译HttpAPI涉及到了几个参数类- public class YoudaoResult
- {
- /// <summary>
- /// 错误返回码
- /// </summary>
- public string errorCode { get; set; }
- /// <summary>
- /// 源语言和目标语言
- /// </summary>
- public string l { get; set; }
- /// <summary>
- /// 源语言
- /// </summary>
- public string query { get; set; }
- /// <summary>
- /// 源语言
- /// </summary>
- public List<string> translation { get; set; }
- }
复制代码
以上是和大家分享多语言翻译服务的设计和实现。
周国庆
2023/3/19
来源:https://www.cnblogs.com/tianqing/archive/2023/03/20/17232559.html
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