AFNetworking 2.0将标头添加到GET请求

我刚刚开始使用AFNetworking 2.0，并且想知道如何将标头放入HTTP Get请求中。该文档设置了这样的GET：

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

但是由于我们没有处理，NSURLRequests所以我不确定如何设置HTTP标头。

任何帮助，将不胜感激。
问候，
迈克

AFNetworking 2.0的出色文档使这一点很难找到，但是它就在那里。上AFHTTPRequestSerializer是-setValue:forHTTPHeaderField:。

或者，如果遵循他们推荐的创建派生自其的会话管理器AFHTTPSessionManager的方法，则该类可以覆盖一个方法来修改每个请求的标头-dataTaskWithRequest:completionHandler:。我使用它来检查请求并根据具体情况修改标头，并且更喜欢它而不是修改序列化程序，因为它保留了该管理器中包含的联网责任（并避免了单例的混乱）

- (NSURLSessionDataTask *)dataTaskWithRequest:(NSURLRequest *)request completionHandler:(void (^)(NSURLResponse *, id, NSError *))completionHandler
{
    static NSString *deviceId;
    if(!deviceId)
    {
        deviceId = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
    }

    NSMutableURLRequest *req = (NSMutableURLRequest *)request;
    // Give each request a unique ID for tracing
    NSString *reqId = [NSString stringWithFormat:@"%@+%@", deviceId, [[NSUUID UUID] UUIDString] ];
    [req setValue:reqId forHTTPHeaderField:"x-myapp-requestId"];
    return [super dataTaskWithRequest:req completionHandler:completionHandler];
}

这是使用AFNetworking 2.0的示例

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [AFJSONResponseSerializer serializer];
manager.requestSerializer = [AFJSONRequestSerializer serializer];
[manager.requestSerializer setValue:@"calvinAndHobbesRock" forHTTPHeaderField:@"X-I do what I want"];

[manager GET:@"http://localhost:3000" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

关键是以下两行：

manager.requestSerializer = [AFJSONRequestSerializer serializer];
[manager.requestSerializer setValue:@"calvinAndHobbessRock" forHTTPHeaderField:@"X-I-do-what-I-want"];

添加响应和请求序列化程序解决了我的问题。

manager.responseSerializer = [AFJSONResponseSerializer serializer];
manager.requestSerializer = [AFJSONRequestSerializer serializer];

[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];

我已经使用此表格预约了特定的标题。

AFHTTPRequestOperationManager *operationManager = [AFHTTPRequestOperationManager manager];
[operationManager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[operationManager.requestSerializer setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];

[operationManager POST:url
            parameters:params
               success:^(AFHTTPRequestOperation *operation, id responseObject) {

                   if (success) {
                       success(responseObject);
                   }

               }
               failure:^(AFHTTPRequestOperation *operation, NSError *error) {

                   NSLog(@"Error: %@", [error description]);

               }
 ];

我认为这是最好的选择。在某个地方的单例中，AFHTTPSessionManager使用配置一个NSURLSessionConfiguration，然后在AFHTTPSessionManager每次您要发出请求时都使用它。

NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
config.HTTPAdditionalHeaders = @{@"Accepts": @"application/json"};

mySingletonSessionManager = [[AFHTTPSessionManager alloc] initWithBaseURL:[NSURL URLWithString:kMyBaseUrl] sessionConfiguration:config];

我这样做了...对于那些通过令牌的人

[manager.requestSerializer setValue:[NSString stringWithFormat:@"Token token=\"%@\"", _userObj.oAuth] forHTTPHeaderField:@"Authorization"];

使用以下代码放置任何类型的标头值：

[[FRHTTPReqManager sharedManager].requestSerializer setValue:value forHTTPHeaderField:key];