集成google翻译的小tips

google翻译的强大,就像我们公司的slogan : “让语言无国界,让世人心相通”

友情提示: google相关的服务都是需要翻墙的,不然在大陆无法访问

写这篇文章的目的就是为了整合一下这方面的资料, 大概是因为被墙,网上关于这方面的资料很少,有些是过于老旧,甚至是不适用的,所以就不得不做个笔记就当作是探探路。

google语音识别

1. 到google注册相关的API_KEY, 地址: https://cloud.google.com/speech-to-text/docs/samples
2. 下载demo https://github.com/GoogleCloudPlatform/ios-docs-samples/tree/master/speech/Objective-C/Speech-REST-Nonstreaming
3. 录制语音文件存于沙盒, 上传语音文件到 https://speech.googleapis.com/v1/speech:recognize?key=xxxxx

核心代码:

NSString *service = @"https://speech.googleapis.com/v1/speech:recognize";
service = [service stringByAppendingString:@"?key="];
service = [service stringByAppendingString:API_KEY];

NSData *audioData = [NSData dataWithContentsOfFile:[self soundFilePath]];//沙盒里的录音文件 具体看google提供的demo
NSDictionary *configRequest = @{@"encoding":@"LINEAR16",
                                @"sampleRateHertz":@(SAMPLE_RATE),
                                @"languageCode":@"zh-cn",
                                @"maxAlternatives":@30};
NSDictionary *audioRequest = @{@"content":[audioData base64EncodedStringWithOptions:0]};
NSDictionary *requestDictionary = @{@"config":configRequest,
                                    @"audio":audioRequest};
NSError *error;
NSData *requestData = [NSJSONSerialization dataWithJSONObject:requestDictionary
                                                      options:0
                                                        error:&error];

NSString *path = service;
NSURL *URL = [NSURL URLWithString:path];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL];
// if your API key has a bundle ID restriction, specify the bundle ID like this:
[request addValue:[[NSBundle mainBundle] bundleIdentifier] forHTTPHeaderField:@"X-Ios-Bundle-Identifier"];
NSString *contentType = @"application/json";
[request addValue:contentType forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:requestData];
[request setHTTPMethod:@"POST"];

NSURLSessionTask *task =
[[NSURLSession sharedSession]
 dataTaskWithRequest:request
 completionHandler:
 ^(NSData *data, NSURLResponse *response, NSError *error) {
   dispatch_async(dispatch_get_main_queue(),
                  ^{
                    NSString *stringResult = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
                    _textView.text = stringResult;
                    NSLog(@"RESULT: %@ ", stringResult);
                  });
 }];
[task resume];

google 文本翻译

文本翻译和语音识别类似,都需要API_KEY,同样是POST请求

/**
 MARK:- 文本互转

 @param text 文本
 @param targetCode 翻译的对应语言代码
 @param callBack 回调结果json字符串
 */
- (void)translateOriginText:(NSString *)text
								 targetCode:(NSString *)targetCode
									 callBack:(void(^)(NSString *objStr))callBack{
	NSString *urlStr = [NSString stringWithFormat:@"https://translation.googleapis.com/language/translate/v2?key=%@",API_KEY];
	NSURL *URL = [NSURL URLWithString: urlStr];
	NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL];
	[request addValue:[[NSBundle mainBundle] bundleIdentifier] forHTTPHeaderField:@"X-Ios-Bundle-Identifier"];
	NSString *contentType = @"application/json";
	[request addValue:contentType forHTTPHeaderField:@"Content-Type"];
// q: 原文本  tagret: 目标语言的代码 zh-cn,en-us...等
	NSDictionary *requestDictionary = @{  @"q" : text, @"target" : targetCode };
	NSError *error;
	NSData *requestData = [NSJSONSerialization dataWithJSONObject:requestDictionary options:0 error:&error];
	[request setHTTPBody:requestData];
	[request setHTTPMethod:@"POST"];
	NSURLSessionTask *task =
	[[NSURLSession sharedSession]
	 dataTaskWithRequest:request
	 completionHandler:
	 ^(NSData *data, NSURLResponse *response, NSError *error) {
		 dispatch_async(dispatch_get_main_queue(),
										^{
											NSString *stringResult = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
											NSLog(@"RESULT: %@ ", stringResult);
											!callBack? : callBack(stringResult);
										});
	 }];
	[task resume];
}

google 语音合成

• 合成是免费的 , 然后是这个接口 http://translate.google.com/translate_tts?ie=UTF-8&client=tw-ob&ttsspeed=1
• 参数组成

  //基地址
  BASE_URL = @"http://translate.google.com/translate_tts?ie=UTF-8&client=tw-ob&ttsspeed=1"
  
  //拼接规则和get请求类似
  total   //标准为100个字符为一组 然后total是总共多少组 
  idx    //下标,第几组
  textlen  //所有文字的计数,就是这个字符串的长度
  q     //合成的文字内容,中文的话需要转编码utf-8最为合适
  tl  //语言，跟识别的语言一致

  主要参数介绍:
  ie: 输入参数编码 input-encode 一般为utf-8
oe: 输入参数编码 output-encode 一般为utf-8
ttsspeed: 合成的语速
  tl: 目标语言代码 target language
hl: 当地语言代码 home language

url编码前:
http://translate.google.com/translate_tts?ie=UTF-8&client=tw-ob&ttsspeed=1&total=1&idx=1&textlen=6&q=某某某是傻逼&tl=zh-cn
url编码后:
http://translate.google.com/translate_tts?ie=UTF-8&client=tw-ob&ttsspeed=1&total=1&idx=1&textlen=6&q=%E9%99%88%E8%89%AF%E8%89%AF%E6%98%AF%E5%82%BB%E9%80%BC&tl=zh-cn

核心代码

///MARK:- 文本 转 语音在线合成
- (void)synthesisAudioWithTranslateWithText:(NSString *)text{
    NSString *baseUrl = @"http://translate.google.com/translate_tts?ie=UTF-8&client=tw-ob&ttsspeed=1";
 //url编码
    NSCharacterSet *encodeUrlSet = [NSCharacterSet URLQueryAllowedCharacterSet];
    NSString *encodeContent = [text stringByAddingPercentEncodingWithAllowedCharacters:encodeUrlSet];
    NSString *urlStr = [NSString stringWithFormat:@"%@&total=1&idx=1&textlen=%ld&q=%@&tl=%@",baseUrl,text.length,encodeContent,self.targetCode];
    NSURL *url = [NSURL URLWithString: urlStr];
      //播放拼接的链接 
	UIWebView *web = [[UIWebView alloc] init];
	web.hidden = YES;
	[self.view addSubview: web];
	NSURLRequest *req = [[NSURLRequest alloc] initWithURL:url];
	[web loadRequest: req];
}

主流的几种语言的代码对照表:

国家	languageCode
🇨🇳中文(简体)	zh-cn
🇨🇳中文(繁体)	zh-tw
🇺🇸英文(美式)	en-us
🇬🇧英文(英式)	en-gb
🇯🇵日语	ja
🇰🇷韩语	ko
🇷🇺俄语	ru
🇪🇸西班牙语	es
🇫🇷法语	fr
🇩🇪德语	de