Objective c AFN网络中的ASIFormDataRequest？

我有一些ASITP代码，但我想继续使用AFHTTP。 我在一些POST请求中使用了ASIFormDataRequest，该代码运行良好：

NSURL *url = [NSURL URLWithString:@"http://someapiurl"];
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
[request setPostValue:@"123" forKey:@"phone_number"];
[request startSynchronous];
NSError *error = [request error];
if (!error) {
    NSLog(@"Response: %@", [[request responseString] objectFromJSONString]);

}

但是，当我试图用AFNetworking做同样的事情时，我发现内容类型有问题（我猜）

这是一段网络代码，但不起作用：

    NSURL *url = [NSURL URLWithString:@"http://dev.url"];
    AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];

    NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:
                            @"123", @"phone_number",
                            nil];
    NSMutableURLRequest *request = [httpClient requestWithMethod:@"POST" path:@"/api/get_archive" parameters:params];
    [request setValue:@"application/x-www-form-urlencoded; charset=UTF8" forHTTPHeaderField:@"Content-Type"];

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

URL是好的，这是检查。 我从服务器上获得以下信息：

{NSErrorFailingURLKey=http://dev.thisapiurl, NSLocalizedDescription=Expected content type {(
    "text/json",
    "application/json",
    "text/javascript"
)}, got text/html}

---

我最近和你经历了同样的事情。这是我编写的一个自定义类，它可以处理几乎所有的网络请求

NetworkClient.h：

//
//  NetworkClient.h
//
//  Created by LJ Wilson on 3/8/12.
//  Copyright (c) 2012 LJ Wilson. All rights reserved.
//

#import <Foundation/Foundation.h>

extern NSString * const ACHAPIKey;

@interface NetworkClient : NSObject

+(void)processURLRequestWithURL:(NSString *)url 
                      andParams:(NSDictionary *)params 
                          block:(void (^)(id obj))block;

+(void)processURLRequestWithURL:(NSString *)url 
                      andParams:(NSDictionary *)params 
                    syncRequest:(BOOL)syncRequest
                          block:(void (^)(id obj))block;

+(void)processURLRequestWithURL:(NSString *)url 
                      andParams:(NSDictionary *)params 
                    syncRequest:(BOOL)syncRequest
             alertUserOnFailure:(BOOL)alertUserOnFailure
                          block:(void (^)(id obj))block;

+(void)handleNetworkErrorWithError:(NSError *)error;

+(void)handleNoAccessWithReason:(NSString *)reason;
@end

NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:
                            @"ParamValue1", @"ParamName1",
                            @"ParamValue2", @"ParamName2",
                            nil];


    [NetworkClient processURLRequestWithURL:nil andParams:params block:^(id obj) {
        if ([obj isKindOfClass:[NSArray class]]) {
            // Do whatever you want with the object.  In this case, I knew I was expecting an Array, but it will return a Dictionary if that is what the web-service responds with.
        }
    }];    

这增加了一些您可能不需要或不想要的功能，只要版权部分保持不变，您可以根据需要随意修改。我使用那个APIKey来验证来自我的应用程序的请求，而不是试图破解的人

调用它（假设已包含NetworkClient.h:

//
//  NetworkClient.h
//
//  Created by LJ Wilson on 3/8/12.
//  Copyright (c) 2012 LJ Wilson. All rights reserved.
//

#import <Foundation/Foundation.h>

extern NSString * const ACHAPIKey;

@interface NetworkClient : NSObject

+(void)processURLRequestWithURL:(NSString *)url 
                      andParams:(NSDictionary *)params 
                          block:(void (^)(id obj))block;

+(void)processURLRequestWithURL:(NSString *)url 
                      andParams:(NSDictionary *)params 
                    syncRequest:(BOOL)syncRequest
                          block:(void (^)(id obj))block;

+(void)processURLRequestWithURL:(NSString *)url 
                      andParams:(NSDictionary *)params 
                    syncRequest:(BOOL)syncRequest
             alertUserOnFailure:(BOOL)alertUserOnFailure
                          block:(void (^)(id obj))block;

+(void)handleNetworkErrorWithError:(NSError *)error;

+(void)handleNoAccessWithReason:(NSString *)reason;
@end

NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:
                            @"ParamValue1", @"ParamName1",
                            @"ParamValue2", @"ParamName2",
                            nil];


    [NetworkClient processURLRequestWithURL:nil andParams:params block:^(id obj) {
        if ([obj isKindOfClass:[NSArray class]]) {
            // Do whatever you want with the object.  In this case, I knew I was expecting an Array, but it will return a Dictionary if that is what the web-service responds with.
        }
    }];    

还可以：

NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:
                            @"ParamValue1", @"ParamName1",
                            nil];

    NSString *urlString = @"https://SuppliedURLOverridesDefault";
    [NetworkClient processURLRequestWithURL:urlString 
                                  andParams:params 
                                syncRequest:YES 
                         alertUserOnFailure:NO 
                                      block:^(id obj) {
                                          if ([obj isKindOfClass:[NSArray class]]) {
                                              // Do stuff
                                          }
                                      }];

---

因此，它将接受任意数量的参数，如果您愿意，可以插入APIKey或其他任何东西，然后根据web服务返回字典或数组。这需要SBJson BTW。

您遇到的问题是因为您正在实例化AFJSONRequestOperation，默认情况下，它需要JSON友好的响应类型。是否需要JSON响应？如果不是，则应使用不太特定的请求类。例如，可以使用HTTPRequestOperationWithRequest:

NSURL *url = [NSURL URLWithString:@"http://dev.url"];
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];

NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:
                        @"123", @"phone_number",
                        nil];
NSMutableURLRequest *request = [httpClient requestWithMethod:@"POST" path:@"/api/get_archive" parameters:params];
[request setValue:@"application/x-www-form-urlencoded; charset=UTF8" forHTTPHeaderField:@"Content-Type"];

//Notice the different method here!
AFHTTPRequestOperation *operation = [httpClient HTTPRequestOperationWithRequest:request 
    success:^(AFHTTPRequestOperation *operation, id responseObject) {
            NSLog(@"Response: %@", responseObject);
        } 
    failure:^(AFHTTPRequestOperation *operation, NSError *error){
            NSLog(@"Error: %@", error);
        }];
//Enqueue it instead of just starting it.
[httpClient enqueueHTTPRequestOperation:operation];

---

如果您有更具体的请求/响应类型（JSON、XML等），您可以使用这些特定的AFHTTPRequestOperation子类。否则，只需使用普通的HTTP子类。

EIJay，thx作为您的答案，但我想使用AFNetworking framework，因为我知道它会得到维护并变得更好。这就是我离开Asitp的原因我离开ASI的原因是因为AFNetworking使用了块In不要使用委托方法，因为如果不重写.Yap，它永远不会与ARC兼容，这就是我所需要的。谢谢！你说的“期望JSON友好响应类型”是什么意思？我的web服务返回JSON响应。你能看看@jagill吗？你说的“期望JSON友好响应类型”是什么意思？是否检查内容类型=应用程序/json？