ios - 使用 AFNetworking 获取 OMDb API 数据

Question

我正在尝试从 OMDb API 中获取电影数据

OMDb 提供的响应有一个错误的内容类型，但我能够规避这个问题。但是，我仍然收到来自 AFNetworking 的错误:

Error while fetching IMDBSingleMovieData: ErrorDomain=NSCocoaErrorDomain Code=3840 "The operation couldn’t becompleted. (Cocoa error 3840.)" (JSON text did not start with array orobject and option to allow fragments not set.) UserInfo=0x10a7451d0{NSDebugDescription=JSON text did not start with array or object andoption to allow fragments not set.}

代码:

// add url request parameters
NSDictionary* parameters = @{ @"i" : [NSString stringWithFormat:@"tt%d", identifier] };

// run the request operation
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];
[manager POST:@"http://www.omdbapi.com" parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
        self.singleIMDBMovieData = [NSDictionary dictionaryWithDictionary:responseObject];
        [self.delegate updateIMDBMovieDetails];
        NSLog(@"Object returned %@", self.singleIMDBMovieData);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error while fetching IMDBSingleMovieData: %@", error);
}];

我该怎么做才能解决这个问题？来自 API 的示例响应:http://www.omdbapi.com/?i=tt0993846

Answer 1

您正在发出 POST 请求，但您想要获取数据，因此您应该使用 GET:

[manager GET:@"http://www.omdbapi.com" parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
        self.singleIMDBMovieData = [NSDictionary dictionaryWithDictionary:responseObject];
        [self.delegate updateIMDBMovieDetails];
        NSLog(@"Object returned %@", self.singleIMDBMovieData);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error while fetching IMDBSingleMovieData: %@", error);
}];