如何使用AFNetworking 2设置HTTP请求？

Question

我需要发送普通的HTTP请求(GET)，并在text/html中回答will。如何使用AFNetworkin 2发送此响应？

现在我试着用

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"https://example.com"]];
[self HTTPRequestOperationWithRequest:request
                              success:^(AFHTTPRequestOperation *operation, id responseObject) {
                                  NSLog(@"JSON: %@", responseObject);
                              } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                                  NSLog(@"Error: %@", error);
                              }];

很沮丧--什么也做不了。调试时，未触发成功或失败子句。

此外，我还尝试使用GET:parameters:success:failure: method，但作为响应，我看到了以下错误：

错误:错误Domain=AFNetworkingErrorDomain代码=-1016“请求失败:不可接受的内容类型: text/html”

请，任何人都可以解释我哪里出了问题，以及发送请求的正确方式是什么(如果我会以text/html的形式得到响应)？

你好，亚历克斯。

Answer 1

你在评论中说，作为对使用AFHTTPRequestOperationManager的建议的回应

当我使用GET时，我得到了如下错误: Error: error Domain=AFNetworkingErrorDomain代码=-1016“请求失败:不可接受的内容类型: text/html”

你可以用AFHTTPResponseSerializer来弥补这个问题。

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
[manager GET:@"https://example.com" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
    // do whatever you'd like here; for example, if you want to convert 
    // it to a string and log it, you might do something like:

    NSString *string = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
    NSLog(@"%@", string);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

您也可以使用AFHTTPRequestOperation

NSOperationQueue *networkQueue = [[NSOperationQueue alloc] init];
networkQueue.maxConcurrentOperationCount = 5;

NSURL *url = [NSURL URLWithString:@"https://example.com"];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
    // do whatever you'd like here; for example, if you want to convert 
    // it to a string and log it, you might do something like:

    NSString *string = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
    NSLog(@"%@", string);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"%s: AFHTTPRequestOperation error: %@", __FUNCTION__, error);
}];
[networkQueue addOperation:operation];

但是，理想情况下，最好编写返回JSON (或XML)的服务器代码，因为对于应用程序来说，这更容易使用和解析。

Answer 2

//AFN 2.0 is just support IOS 7,and it's standard use as follow:

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager GET:@"http://example.com/resources.json" 
  parameters:nil
     success:^(AFHTTPRequestOperation *operation, id responseObject) {
               NSLog(@"JSON: %@", responseObject)
     }failure:^(AFHTTPRequestOperation *operation, NSError *error) {
               NSLog(@"Error: %@", error);
     }
];