AFNetworking - 如何使POST请求

Question

编辑07/14

正如比尔·伯吉斯在他回答的评论mentionned，这个问题是关系到AFNetworking的version 1.3。这里的新手可能已经过时了。

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我是很新的iPhone的发展，我使用AFNetworking作为我的服务库。

我查询的API是REST风格的API，我需要发出POST请求。要做到这一点，我试着用下面的代码：

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]; 

没有与此代码两个主要问题：

• AFJSONRequestOperation似乎使一个GET请求，而不是一个POST一个。
• 我不能把参数放到这个方法中。

我也试图与此代码：

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); 
}]; 

有没有更好的办法，使我想在这里把它做？

感谢您的帮助！

Answer 1

您可以覆盖与AFNetworking一起使用的请求的默认行为，以作为POST进行处理。

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

这假定您已经覆盖默认的AFNetworking设置以使用自定义客户端。如果你不是，我会建议这样做。只需创建一个自定义类来处理您的网络客户端。

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; 

} 

那么你应该能够火过的操作队列没有问题，您的网络电话。

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];