是否有AFHTTPClient与AFNetworking一起发布json的例子？

Question

寻找一个如何发布json的例子AFHTTPClient.我看到有一个postPath方法接受一个NSDictionary并且AFJSONEncode方法返回一个NSData.是否有一种简单的方法来序列化对象NSDictionary,或者使用jsonkit是否有更简单的方法？

我只需要将对象作为json发布到REST API.

更新:所以我尝试传递一个字典,但它似乎打破序列化嵌套数组.

例如,如果我有一个对象:

Post* p = [[Post alloc] init];
p.uname = @"mike";
p.likes =[NSNumber numberWithInt:1];
p.geo = [[NSArray alloc] initWithObjects:[NSNumber numberWithFloat:37.78583], [NSNumber numberWithFloat:-122.406417], nil ];
p.place = @"New York City";
p.caption = @"A test caption";
p.date = [NSDate date];

谁得到字典有如下数据:

{
    caption = "A test caption";
    date = "2011-12-13 17:58:37 +0000";
    geo =     (
        "37.78583",
        "-122.4064"
    );
    likes = 1;
    place = "New York City";

}

序列化将直接失败或geo不会被序列化为数组,而是像字符串文字一样 ("37.78583", "-122.4064");

Answer 1

如果您要发布到JSON REST API,那么应该存在从object属性到JSON密钥的特定映射,对吧？也就是说,服务器期望某些命名字段中的某些信息.

所以你想要做的是构建一个NSDictionary或NSMutableDictionary使用API​​中使用的密钥及其相应的值.然后,只需将该字典传递给parameters任何请求方法的参数AFHTTPClient.如果parameterEncoding客户端的属性设置为AFJSONParameterEncoding,则请求的主体将自动编码为JSON.

Answer 2

最好和最简单的方法是将AFHTTPClient子类化.

使用此代码段

MBHTTPClient

#define YOUR_BASE_PATH @"http://sample.com"
#define YOUR_URL @"post.json"
#define ERROR_DOMAIN @"com.sample.url.error"

/**************************************************************************************************/
#pragma mark - Life and Birth

+ (id)sharedHTTPClient
{
    static dispatch_once_t pred = 0;
    __strong static id __httpClient = nil;
    dispatch_once(&pred, ^{
        __httpClient = [[self alloc] initWithBaseURL:[NSURL URLWithString:YOUR_BASE_PATH]];
        [__httpClient setParameterEncoding:AFJSONParameterEncoding];
        [__httpClient registerHTTPOperationClass:[AFJSONRequestOperation class]];
        //[__httpClient setAuthorizationHeaderWithUsername:@"" password:@""];
    });
    return __httpClient;
}

/**************************************************************************************************/
#pragma mark - Custom requests

- (void) post<#Objects#>:(NSArray*)objects
success:(void (^)(AFHTTPRequestOperation *request, NSArray *objects))success
failure:(void (^)(AFHTTPRequestOperation *request, NSError *error))failure
{
    [self postPath:YOUR_URL
       parameters:objects
          success:^(AFHTTPRequestOperation *request, id JSON){
              NSLog(@"getPath request: %@", request.request.URL);

              if(JSON && [JSON isKindOfClass:[NSArray class]])
              {
                  if(success) {
                      success(request,objects);
                  }
              }
              else {
                  NSError *error = [NSError errorWithDomain:ERROR_DOMAIN code:1 userInfo:nil];
                  if(failure) {
                      failure(request,error);
                  }
              }
          }
          failure:failure];
}

然后在你的代码中调用

[[MBHTTPClient sharedHTTPClient]  post<#Objects#>:objects
                                          success:^(AFHTTPRequestOperation *request, NSArray *objects) {
    NSLog("OK");
}
                                          failure:(AFHTTPRequestOperation *request, NSError *error){
    NSLog("NOK %@",error);
}

对象是NSArray(您可以将其更改为NSDictonary)并将以JSON格式进行编码