Xcode:切换到google api v1 to api v2 (google翻译)

Question

这是谷歌翻译的解析器。我从v1接口切换到v2 (付费)接口，但我有一个问题。转换是在日志中完成的，但是responseStatus是0而不是200。您可以查看日志，翻译已完成。在Google的页面上，json说应该也会出现在顶部的"200 OK"，但并没有出现。想法？

-(void)getText:(NSString *)text lan1:(NSString *)lan1 lan2:(NSString *)lan2 {
translate = [[NSString stringWithString:text] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
lanTranslate = [[NSString stringWithString:lan1] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
lanTranslated = [[NSString stringWithString:lan2] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
[self performTranslation];
}
-(void)performTranslation {

responseData = [NSMutableData data];

NSString *_translation = [NSString stringWithFormat:@"%@&target=%@", lanTranslate,lanTranslated];
NSString *translation = [_translation stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

NSString *url = [NSString stringWithFormat:@"https://www.googleapis.com/language/translate/v2?key=MYKEY&source=%@&q=%@",translation, translate];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:url]];

NSURLConnection *go = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[go start];


}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response 
{
[responseData setLength:0];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
[responseData appendData:data];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {

NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
NSMutableDictionary *JSONDictionary = [responseString JSONValue];

NSLog(@"res %@  js%@",responseString, JSONDictionary);


if (JSONDictionary != nil) 
{
    NSDecimalNumber * responseStatus = [JSONDictionary objectForKey:@"responseStatus"];
    if ([responseStatus intValue] != 200) {

        **NSLog(@"responseStatus %i",(int)responseStatus);**

        return;
    }

    NSMutableDictionary *responseDataDict = [JSONDictionary objectForKey:@"responseData"];
    if (responseDataDict != nil) {
        NSString *translatedText = [responseDataDict objectForKey:@"translatedText"];
        translated = [NSString stringWithString:translatedText];    
        [viewSuperiore translate:translated];

    }
}


}

日志

 res {
 "data": {
 "translations": [
 {
 "translatedText": "text to be translated"
 }
 ]
 }
 }
js{
data =     {
    translations =         (
                    {
            translatedText = "text to be translated";
        }
    );
};
}

Answer 1

HTTP状态代码似乎不是google translate API v2结果的一部分。

(换句话说，您在上面的代码中得到了一个0，因为键@"responseStatus“没有出现在JSON有效负载中。)

解决方案(适用于我)：您应该从请求的响应中检索状态代码，该响应在connection:didReceiveResponse: delegate中返回，或者在为同步请求调用sendSynchronousRequest:returningResponse:error:之后立即返回：

NSInteger responseStatus = (NSHTTPURLResponse*)response statusCode；

希望这能有所帮助。