摘要:本文主要向大家介绍了C#编程之C#调用谷歌翻译API,通过具体的内容向大家展示,希望对大家学习C#编程有所帮助。
本文主要向大家介绍了C#编程之C#调用谷歌翻译API,通过具体的内容向大家展示,希望对大家学习C#编程有所帮助。
原资料为网上找到的原稿为://www.cnblogs.com/marso/p/google_translate_api.html(此处只做个人笔记参考)
主要分两块:通过WebRequest的方式请求内容;获取Get方式的请求参数(难点在于tk的获取)。
以下是TK的JS代码,把以下代码保存存到程序目录下
gettk.js
var b = function (a, b) {
for (var d = 0; d < b.length - 2; d += 3) {
var c = b.charAt(d + 2),
c = "a" <= c ? c.charCodeAt(0) - 87 : Number(c),
c = "+" == b.charAt(d + 1) ? a >>> c : a << c;
a = "+" == b.charAt(d) ? a + c & 4294967295 : a ^ c
}
return a
}
var tk = function (a,TKK) {
for (var e = TKK.split("."), h = Number(e[0]) || 0, g = [], d = 0, f = 0; f < a.length; f++) {
var c = a.charCodeAt(f);
128 > c ? g[d++] = c : (2048 > c ? g[d++] = c >> 6 | 192 : (55296 == (c & 64512) && f + 1 < a.length && 56320 == (a.charCodeAt(f + 1) & 64512) ? (c = 65536 + ((c & 1023) << 10) + (a.charCodeAt(++f) & 1023), g[d++] = c >> 18 | 240, g[d++] = c >> 12 & 63 | 128) : g[d++] = c >> 12 | 224, g[d++] = c >> 6 & 63 | 128), g[d++] = c & 63 | 128)
}
a = h;
for (d = 0; d < g.length; d++) a += g[d], a = b(a, "+-a^+6");
a = b(a, "+-3^+b+-f");
a ^= Number(e[1]) || 0;
0 > a && (a = (a & 2147483647) + 2147483648);
a %= 1E6;
return a.toString() + "." + (a ^ h)
}
然后在C#程序只引入Json.net(这个我用的版本为net4.5),然后再引入system.wed.dll(文件目录为:C:\WINDOWS\Microsoft.NET\Framework\找到相应版本)
以下为测试程序
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Web;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
google test = new google();
Console.WriteLine(test.GoogleTranslate("RCC_APB2Periph: specifies the APB2 peripheral to gates its clock.This parameter can be any combination of the following values", "auto", "zh-CN"));
Console.ReadKey();
}
}
class google
{
///
/// 谷歌翻译
///
/// 待翻译文本
/// 自动检测:auto
/// 中文:zh-CN,英文:en
/// 翻译后文本
public string GoogleTranslate(string text, string fromLanguage, string toLanguage)
{
CookieContainer cc = new CookieContainer();
string GoogleTransBaseUrl = "https://translate.google.cn/";
var BaseResultHtml = GetResultHtml(GoogleTransBaseUrl, cc, "");
Regex re = new Regex(@"(?<=TKK=)(.*?)(?=\);)");
var TKKStr = re.Match(BaseResultHtml).ToString() + ")";//在返回的HTML中正则匹配TKK的JS代码
var TKK = ExecuteScript(TKKStr, TKKStr);//执行TKK代码,得到TKK值
var GetTkkJS = File.ReadAllText("./gettk.js");
var tk = ExecuteScript("tk(\"" + text + "\",\"" + TKK + "\")", GetTkkJS);
string googleTransUrl = "https://translate.google.cn/translate_a/single?client=t&sl=" + fromLanguage + "&tl=" + toLanguage + "&hl=en&dt=at&dt=bd&dt=ex&dt=ld&dt=md&dt=qca&dt=rw&dt=rm&dt=ss&dt=t&ie=UTF-8&oe=UTF-8&otf=1&ssel=0&tsel=0&kc=1&tk=" + tk + "&q=" + HttpUtility.UrlEncode(text);
var ResultHtml = GetResultHtml(googleTransUrl, cc, "https://translate.google.cn/");
dynamic TempResult = Newtonsoft .Json.JsonConvert.DeserializeObject(ResultHtml);
string ResultText = Convert.ToString(TempResult[0][0][0]);
return ResultText;
}
public string GetResultHtml(string url, CookieContainer cookie, string refer)
{
var html = "";
var webRequest = WebRequest.Create(url) as HttpWebRequest;
webRequest.Method = "GET";
webRequest.CookieContainer = cookie;
webRequest.Referer = refer;
webRequest.Timeout = 20000;
webRequest.Headers.Add("X-Requested-With:XMLHttpRequest");
webRequest.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
webRequest.UserAgent = " Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0)";
using (var webResponse = (HttpWebResponse)webRequest.GetResponse())
{
using (var reader = new StreamReader(webResponse.GetResponseStream(), Encoding.UTF8))
{
html = reader.ReadToEnd();
reader.Close();
webResponse.Close();
}
}
return html;
}
///
/// 执行JS
///
/// 参数体
/// JavaScript代码的字符串
///
private string ExecuteScript(string sExpression, string sCode)
{
MSScriptControl.ScriptControl scriptControl = new MSScriptControl.ScriptControl();
scriptControl.UseSafeSubset = true;
scriptControl.Language = "JScript";
scriptControl.AddCode(sCode);
try
{
string str = scriptControl.Eval(sExpression).ToString();
return str;
}
catch (Exception ex)
{
string str = ex.Message;
}
return null;
}
}
}
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