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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：(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)
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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
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