Question

我正在尝试使用OAConsumer API获取数据。我尝试了下面的代码，它给我一个错误。

-(void)performQuery
{
 OAConsumer *consumer = [[OAConsumer alloc] initWithKey:OAUTH_KEY
                                                  secret:OAUTH_SECRET];

 NSURL *url = [NSURL URLWithString:@"https://api.semantics3.com/v1/products"];

 OAMutableURLRequest *request = [[OAMutableURLRequest alloc] initWithURL:url
                                                               consumer:consumer
                                                                  token:nil   
                                                                  realm:nil  
                                                      signatureProvider:nil]; // use the default method, HMAC-SHA1

  [request setHTTPMethod:@"GET"];
  [consumer release];


  OARequestParameter * qParam = [[OARequestParameter alloc] initWithName:@"q" value:@"{\"cat_id\":13658,\"model\":\"Satellite\"}"];


 NSArray *params = [NSArray arrayWithObjects:qParam, nil];
 [qParam release];

 [request setParameters:params];
 OADataFetcher *fetcher = [[OADataFetcher alloc] init];

 [fetcher fetchDataWithRequest:request
                     delegate:self
            didFinishSelector:@selector(requestDidFinishWithData:)
              didFailSelector:@selector(requestDidFailWithError:)];

  [request release];

}

错误如下：

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[OAServiceTicket bytes]: unrecognized selector sent to instance 0x1ed65bf0'

此行发生错误： ** NSString response = [[NSString alloc] initWithData：data 编码：NSUTF8StringEncoding];

  - (void)requestDidFinishWithData:(NSData *)data {

    NSString *response= [[NSString alloc] initWithData:data
                                                   encoding:NSUTF8StringEncoding];

    //here do what you want with the response, I use SBJson to parse it.

    NSLog(@"Request success!%@", response); 
    [responseBody release];


 }


  - (void)requestDidFailWithError:(NSError *)error {

    NSLog(@"Request did fail with error: %@", [error localizedDescription]);

  }

知道我在这做什么吗？

Answer 1

当它实际上是OAServiceTicket对象时，你试图读作NSData。

OAServiceTicket对象具有以下内容：

request = [aRequest retain];
response = [aResponse retain];
data = [aData retain];
didSucceed = success;

所以你的代表必须如下：

- (void)requestDidFinishWithData:(OAServiceTicket *)ticket {

    NSString *response= [[NSString alloc] initWithData:ticket.data
                                              encoding:NSUTF8StringEncoding];

    //here do what you want with the response, I use SBJson to parse it.

    NSLog(@"Request success!%@", response);
    [response release];

}

适合我。

Answer 2

请票是否成功，就像这样...

 - (void)fetchingVideoTicket:(OAServiceTicket *)ticket didFinishWithData:(NSData *)data{
if(ticket.didSucceed)
{
  your code...
 }

在您的情况下似乎请求成功但是没有生成响应，表明您没有包含该请求的所有必需参数，当我尝试连接Vimeo时我也遇到了同样的问题但是在我添加之后请求的回调参数，连接成功并生成响应。检查是否添加了所有参数。

Consumer API会在接收数据上引发错误

2 个答案: