iPhone SDK - Google TTS和编码

Question

我正在开发支持多种语言的文本到语音的iPhone应用程序。

这是我的请求的URL

requestUrlStr = @"http://www.translate.google.com/translate_tts?tl=en&q=hello"; 

英语上面的网址有没有问题

但对中国

requestUrlStr = @"http://www.translate.google.com/translate_tts?tl=zh-TW&q=你好"; 

我知道上面的网址会给 '坏URL'，所以我用follow方法将字符串编码成UTF-8

requestUrlStr = [requestUrlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 

它将成为

http://www.translate.google.com/translate_tts?tl=zh-CN&q=%E4%BD%A0%E5%A5%BD 

然后谷歌TTS不能认识到这一点中国的文字。

Answer 1

您必须假装为NSURLRequest中的默认（appName等）之外的用户代理。试试这个（我用希腊语）...

NSString* userAgent = @"Mozilla/5.0"; 

NSURL *url = [NSURL URLWithString:[@"http://www.translate.google.com/translate_tts?tl=el&q=Καλημέρα" 
            stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; 


NSMutableURLRequest* request = [[[NSMutableURLRequest alloc] initWithURL:url] autorelease]; 

[request setValue:userAgent forHTTPHeaderField:@"User-Agent"]; 


NSURLResponse* response = nil; 
NSError* error = nil; 
NSData* data = [NSURLConnection sendSynchronousRequest:request 
            returningResponse:&response 
               error:&error]; 



[data writeToFile:@"/var/tmp/tts.mp3" atomically:YES]; 

UPDATE 2017年

因为我们喜欢的公司享受的更新和贬低的东西，这里是理所应当的，现在上面的例子...

NSString* text = @"καλημέρα"; 
NSString* lang = @"el"; 

NSString* sUrl = [NSString stringWithFormat:@"https://translate.google.com/translate_tts?q=%@&tl=%@&client=tw-ob", text, lang]; 
sUrl = [sUrl stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLFragmentAllowedCharacterSet]]; 
NSURL* url = [NSURL URLWithString:sUrl]; 

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; 
[request setHTTPMethod:@"GET"]; 
[request setValue:@"Mozilla/5.0" forHTTPHeaderField:@"User-Agent"]; 

NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration] 
                 delegate:nil 
               delegateQueue:[NSOperationQueue mainQueue]]; 

[[session dataTaskWithRequest:request 
      completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { 
       [data writeToFile:@"/var/tmp/tts.mp3" atomically:YES]; 
      } 
    ] resume]; 

...delegate:nil delegateQueue:[NSOperationQueue mainQueue]可以省略。