具有嵌套对象数组的Restkit复杂对象映射,位于Core Data中

// 首先，我们需要定义一个Core Data模型，包含一个实体和一个关系
// 假设我们有一个User实体和一个Post实体，每个User可以有多个Post

// 然后，我们可以使用Restkit的映射功能将JSON数据映射到Core Data模型中
RKEntityMapping *userMapping = [RKEntityMapping mappingForEntityForName:@"User" inManagedObjectStore:managedObjectStore];
userMapping.identificationAttributes = @[@"id"];
[userMapping addAttributeMappingsFromDictionary:@{
    @"id": @"userId",
    @"name": @"userName",
}];

RKEntityMapping *postMapping = [RKEntityMapping mappingForEntityForName:@"Post" inManagedObjectStore:managedObjectStore];
postMapping.identificationAttributes = @[@"id"];
[postMapping addAttributeMappingsFromDictionary:@{
    @"id": @"postId",
    @"title": @"postTitle",
    @"content": @"postContent",
}];

// 定义关系映射
RKRelationshipMapping *postsMapping = [RKRelationshipMapping relationshipMappingFromKeyPath:@"posts" toKeyPath:@"posts" withMapping:postMapping];
[userMapping addPropertyMapping:postsMapping];

// 最后，我们可以使用Restkit的请求操作来获取JSON数据，并将其映射到Core Data中
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:userMapping method:RKRequestMethodGET pathPattern:nil keyPath:@"" statusCodes:RKStatusCodeIndexSetForSuccessfulResponses];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"https://api.example.com/users"]];
RKManagedObjectRequestOperation *operation = [[RKManagedObjectRequestOperation alloc] initWithRequest:request responseDescriptors:@[responseDescriptor]];
[operation setManagedObjectContext:managedObjectContext];
[operation setCompletionBlockWithSuccess:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
    // 请求成功，数据已经映射到Core Data中
} failure:^(RKObjectRequestOperation *operation, NSError *error) {
    // 请求失败，处理错误
}];
[operation start];