AFNetworking - 如何使POST請求

Question

編輯07/14

正如比爾·伯吉斯在他回答的評論mentionned，這個問題是關係到AFNetworking的version 1.3。這裏的新手可能已經過時了。

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我是很新的iPhone的發展，我使用AFNetworking作爲我的服務庫。

我查詢的API是REST風格的API，我需要發出POST請求。要做到這一點，我試着用下面的代碼：

NSDictionary *parameters = [NSDictionary dictionaryWithObjectsAndKeys:@"my_username", @"username", @"my_password", @"password", nil]; 
NSURL *url = [NSURL URLWithString:@"http://localhost:8080/login"]; 

NSURLRequest *request = [NSURLRequest requestWithURL:url]; 
AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) { 
    NSLog(@"Pass Response = %@", JSON); 
} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) { 
    NSLog(@"Failed Response : %@", JSON); 
}]; 
[operation start]; 

沒有與此代碼兩個主要問題：

• AFJSONRequestOperation似乎使一個GET請求，而不是一個POST一個。
• 我不能把參數放到這個方法中。

我也試圖與此代碼：

NSDictionary *parameters = [NSDictionary dictionaryWithObjectsAndKeys:@"my_username", @"username", @"my_password", @"password", nil]; 
NSURL *url = [NSURL URLWithString:@"http://localhost:8080"]; 
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url]; 

[httpClient postPath:@"/login" parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) { 
    NSLog(@"Succes : %@", responseObject); 
} failure:^(AFHTTPRequestOperation *operation, NSError *error) { 
    NSLog(@"Failure : %@", error); 
}]; 

有沒有更好的辦法，使我想在這裏把它做？

感謝您的幫助！

Answer 1

您可以覆蓋與AFNetworking一起使用的請求的默認行爲，以作爲POST進行處理。

NSURLRequest *request = [client requestWithMethod:@"POST" path:path parameters:nil]; 

這假定您已經覆蓋默認的AFNetworking設置以使用自定義客戶端。如果你不是，我會建議這樣做。只需創建一個自定義類來處理您的網絡客戶端。

MyAPIClient.h

#import <Foundation/Foundation.h> 
#import "AFHTTPClient.h" 

@interface MyAPIClient : AFHTTPClient 

+(MyAPIClient *)sharedClient; 

@end 

MyAPIClient.m

@implementation MyAPIClient 

+(MyAPIClient *)sharedClient { 
    static MyAPIClient *_sharedClient = nil; 
    static dispatch_once_t oncePredicate; 
    dispatch_once(&oncePredicate, ^{ 
     _sharedClient = [[self alloc] initWithBaseURL:[NSURL URLWithString:webAddress]]; 
    }); 
    return _sharedClient; 
} 

-(id)initWithBaseURL:(NSURL *)url { 
    self = [super initWithBaseURL:url]; 
    if (!self) { 
     return nil; 
    } 
    [self registerHTTPOperationClass:[AFJSONRequestOperation class]]; 
    [self setDefaultHeader:@"Accept" value:@"application/json"]; 
    self.parameterEncoding = AFJSONParameterEncoding; 

    return self; 

} 

那麼你應該能夠火過的操作隊列沒有問題，您的網絡電話。

MyAPIClient *client = [MyAPIClient sharedClient]; 
    [[AFNetworkActivityIndicatorManager sharedManager] setEnabled:YES]; 
    [[AFNetworkActivityIndicatorManager sharedManager] incrementActivityCount]; 

    NSString *path = [NSString stringWithFormat:@"myapipath/?value=%@", value]; 
    NSURLRequest *request = [client requestWithMethod:@"POST" path:path parameters:nil]; 

    AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) { 
     // code for successful return goes here 
     [[AFNetworkActivityIndicatorManager sharedManager] decrementActivityCount]; 

     // do something with return data 
    }failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) { 
     // code for failed request goes here 
     [[AFNetworkActivityIndicatorManager sharedManager] decrementActivityCount]; 

     // do something on failure 
    }]; 

    [operation start];