RestKit 对象映射问题

Question

我有这个 JSON 响应，但我不知道如何映射。它看起来像这样：

{
  "responseError": null,
  "displayMenuList": {
    "MenuList": [
      {
        "ID": "3223",
        "Name": "Main",
        "AddressURL": "www.mysite.com",
        "DisplayType": "True",
        "ImageURL": "main.png",
        "NotSplitBUser": "True",
        "ParentCategoryId": "3223",
        "PrivateUser": "True",
        "SortOrder": 1,
        "SplitBUser": "True",
        "TargetURL": "_self"
      },
      {
        "ID": "3307",
        "Name": "Contact",
        "AddressURL": "www.mysite.com",
        "DisplayType": "True",
        "ImageURL": "service.png",
        "NotSplitBUser": "True",
        "ParentCategoryId": "3224",
        "PrivateUser": "True",
        "SortOrder": 0,
        "SplitBUser": "True",
        "TargetURL": "_self"
      },
      {
        "ID": "3298",
        "Name": "Call Us",
        "AddressURL": "www.mysite.com",
        "DisplayType": "True",
        "ImageURL": "service.png",
        "NotSplitBUser": "True",
        "ParentCategoryId": "3224",
        "PrivateUser": "True",
        "SortOrder": 1,
        "SplitBUser": "True",
        "TargetURL": "_self"
      },
      {
        "ID": "3224",
        "Name": "Service",
        "AddressURL": "www.mysite.com",
        "DisplayType": "True",
        "ImageURL": "service.png",
        "NotSplitBUser": "True",
        "ParentCategoryId": "3224",
        "PrivateUser": "True",
        "SortOrder": 2,
        "SplitBUser": "True",
        "TargetURL": "_self"
      }
    ]
  },
  "responseCurrentBillState": null,
  "responseGetPcrfSubBuckets": null,
  "userData": {
    "abroadInd": null,
    "accountType": "B",
    "customerId": "",
    "fullName": "Juan",
    "subscriberNumber": ""
  }
}

我只是不知道如何映射这些对象，我创建了一个名为 RKSideMenu 的对象，还有一个名为 RKUserData 的对象，它们看起来像这样：

@interface RKSideMenu : NSObject
@property (copy, nonatomic) NSString *addressURL;
@property (copy, nonatomic) NSString *displayType;
@property (copy, nonatomic) NSNumber *id_number;
@property (copy, nonatomic) NSString *imageURL;
@property (copy, nonatomic) NSString *name;
@property (assign, nonatomic) BOOL splitBUser;
+ (NSDictionary*)getAttributes;
@end

@implementation RKSideMenu
+ (NSDictionary*)getAttributes
{
    return [NSDictionary dictionaryWithObjects:@[@"addressURL", @"displayType", @"id_number", @"imageURL", @"name", @"splitBUser"]
                                       forKeys:@[@"AddressURL", @"DisplayType", @"ID", @"ImageURL", @"Name", @"SplitBUser"]];
}
@end

@interface RKUserData : NSObject
@property (copy, nonatomic) NSString *abroadInd;
@property (copy, nonatomic) NSString *accountType;
@property (copy, nonatomic) NSString *customerID;
@property (copy, nonatomic) NSString *fullName;
@property (copy, nonatomic) NSString *subscriberNumber;
+ (NSDictionary*)getAttributes;
@end

@implementation RKUserData
+ (NSDictionary*)getAttributes
{
    return [NSDictionary dictionaryWithObjects:@[@"abroadInd", @"accountType", @"customerID", @"fullName;", @"subscriberNumber"]
                                       forKeys:@[@"abroadInd", @"accountType", @"customerId", @"fullName;", @"subscriberNumber"]];
}
@end

我开始使用这两种方法进行映射，但是我卡住了，不知道该怎么做。我查看了https://github.com/RestKit/RestKit/wiki/Object-mapping，但仍然无法正确。

RKObjectMapping *sideMenuMapping = [RKObjectMapping mappingForClass:[RKSideMenu class]];
[sideMenuMapping addAttributeMappingsFromDictionary:[RKSideMenu getAttributes]];

RKObjectMapping *userDataMapping = [RKObjectMapping mappingForClass:[RKUserData class]];
[userDataMapping addAttributeMappingsFromDictionary:[RKUserData getAttributes]];

提前致谢！

编辑：顶部的 Json 替换为来自服务器的真实 json。

Answer 1

因此，为了设置映射，您首先需要定义 API 的基本 url，如下所示：

AFHTTPClient *client = [AFHTTPClient clientWithBaseURL:[NSURL URLWithString:@"URL_TO_YOUR_API"]];
RKObjectManager *objectManager = [[RKObjectManager alloc] initWithHTTPClient:client];

那么你需要为上面输出json的url设置一个响应描述符：

[[RKObjectManager sharedManager] addResponseDescriptor:[RKResponseDescriptor responseDescriptorWithMapping:sideMenuMapping
                                                                                                    method:RKRequestMethodAny
                                                                                               pathPattern:@"/mainScreenData"
                                                                                                   keyPath:@"displayMenuList.MenuList"
                                                                                               statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)]];

"RKRequestMethodAny" 应替换为您正在使用的请求方法，例如"RKRequestMethodGET"。

然后你只需通过调用来检索对象：

  [[RKObjectManager sharedManager] getObjectsAtPath:@"/mainScreenData"
                   parameters:nil
                      success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {

                          NSArray *sideMenuList = [NSMutableArray arrayWithArray:[mappingResult array]];
                      }
                      failure:^(RKObjectRequestOperation *operation, NSError *error) {
                          NSLog(@"%@",[error localizedDescription]);
                      }];  

我强烈建议您查看 RestKit 提供的演示。这使得整个过程更加清晰。

干杯，
塞巴斯蒂安