ios - RestKit:POST 反序列化 - 预期类型 A 的对象映射，提供者为 B 返回一个

Question

这是我的路由设置:

[manager.router.routeSet addRoute:[RKRoute routeWithClass:[UserProfile class]  pathPattern:@"/api/v1/users" method:RKRequestMethodPOST]];
[manager.router.routeSet addRoute:[RKRoute routeWithClass:[UserProfileAndStatistics class]  pathPattern:@"/api/v1/profile/:userId" method:RKRequestMethodGET]];
[manager.router.routeSet addRoute:[RKRoute routeWithClass:[PrivateUserProfile class] pathPattern:@"/api/v1/privateprofile/" method:RKRequestMethodGET]];
[manager.router.routeSet addRoute:[RKRoute routeWithClass:[PrivateUserProfile class] pathPattern:@"/api/v1/privateprofile/" method:RKRequestMethodPOST]];

下面是我如何注册映射:

    RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:mapping pathPattern:nil keyPath:nil statusCodes:nil];
    [[RKObjectManager sharedManager] addResponseDescriptor:responseDescriptor];

    //the serialisation step
    RKRequestDescriptor *requestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:[mapping inverseMapping] objectClass:[mapping objectClass] rootKeyPath:nil];
    [[RKObjectManager sharedManager] addRequestDescriptor:requestDescriptor];

最后我打电话:

[[RKObjectManager sharedManager] postObject:userProfile path:nil parameters:nil success:^(RKObjectRequestOperation *operation, RKMappingResult *result) { ... }

正确发布，我得到一个 HTTP 状态代码 200，数据发送到服务器。这意味着序列化步骤正在运行。当响应返回时，我得到一个错误:

Adding mapping error: Expected an object mapping for class of type 'PrivateUserProfile', provider returned one for 'UserProfileAndStatistics'

现在 PrivateUserProfile 和 UserProfileAndStatistics 的映射非常相似

RKObjectMapping *mapping = [RKObjectMapping mappingForClass:[PrivateUserProfile class]];
[mapping addAttributeMappingsFromDictionary:@{
 @"UserIdentifier" :   @"userId",
 @"UserName"       :   @"userName",
 @"Name"           :   @"name",
 @"Email"          :   @"emailAddress",
 @"Bio"            :   @"bio",
 @"Website"        :   @"webSite",
 @"Avatar"         :   @"avatar"
 }];

RKObjectMapping *mapping = [RKObjectMapping mappingForClass:[UserProfileAndStatistics class]];
[mapping addAttributeMappingsFromDictionary:@{
 @"UserIdentifier" :   @"userId",
 @"UserName"       :   @"userName",
 @"Name"           :   @"name",
 @"Bio"            :   @"bio",
 @"Website"        :   @"webSite",
 @"Avatar"         :   @"avatar",
 @"Posts"          :   @"posts",
 @"Followers"      :   @"followers",
 @"Following"      :   @"following"
 }];

但为什么 RestKit 会选择一个而不是另一个呢？如何成功调试？ RKRoute 和RKObjectMapping 之间有没有关系。 PrivateUserProfile 的映射用于序列化步骤，那么为什么它不用于对应的反序列化，我该如何使用它？

Answer 1

您在这里需要两个响应描述符 - 一个路径为 /api/v1/privateprofile/ 用于类 PrivateUserProfile，另一个路径为 /api/v1/profile/:userId 类 UserProfileAndStatistics:

[manager addResponseDescriptorsFromArray:@[

 [RKResponseDescriptor responseDescriptorWithMapping:privateUserProfileMapping
                                         pathPattern:@"/api/v1/privateprofile/"
                                             keyPath:nil
                                         statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)],
 [RKResponseDescriptor responseDescriptorWithMapping:userProfileAndStatisticsMapping
                                         pathPattern:@"/api/v1/profile/:userId"
                                             keyPath:nil
                                         statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)]
 ]];