Question

我正在使用Restkit和对象映射，但我似乎收到错误Encountered errors during mapping: Expected an object mapping for class of type 'Rating', provider returned one for 'Error' - 现在我已经为Rating和Error对象设置了映射和序列化，所以我不明白为什么它困惑。有人可以帮忙吗？

这是从类

返回的映射

// Rating class
+ (RKObjectMapping *)getRestKitObjectMapping {
    RKObjectMapping *mapping = [RKObjectMapping mappingForClass:[Rating class]];
    [mapping mapAttributes:@"id", @"mics", @"mdate", @"ipaddress", nil];
    [mapping mapKeyPath:@"user_id" toAttribute:@"userID"];
    [mapping mapKeyPath:@"fid" toAttribute:@"fid"];


    return mapping;
}

// Error class
+ (RKObjectMapping *)getRestKitObjectMapping {
    RKObjectMapping *mapping = [RKObjectMapping mappingForClass:[Error class]];
    [mapping mapKeyPath:@"code" toAttribute:@"code"];
    [mapping mapKeyPath:@"message" toAttribute:@"message"];

    return mapping;
}

这是对象路由

[[RKObjectManager sharedManager].router routeClass:[Rating class] toResourcePath:@"/mic/:id"];
    [[RKObjectManager sharedManager].router routeClass:[Rating class] toResourcePath:@"/mic" forMethod:RKRequestMethodPOST];

[[RKObjectManager sharedManager].mappingProvider setMapping:[Rating getRestKitObjectMapping] forKeyPath:@"ratings"];
    [[RKObjectManager sharedManager].mappingProvider setMapping:[Error getRestKitObjectMapping] forKeyPath:@"error"];

[[RKObjectManager sharedManager].mappingProvider setSerializationMapping:[[Rating getRestKitObjectMapping] inverseMapping] forClass:[Rating class]];
    [[RKObjectManager sharedManager].mappingProvider setSerializationMapping:[[Error getRestKitObjectMapping] inverseMapping] forClass:[Error class]];

Rating *rating = [[Rating alloc] init];
[[RKObjectManager sharedManager] postObject:rating delegate:self];

这些是委托方法，didLoadObjects确实被称为

- (void)objectLoader:(RKObjectLoader *)objectLoader didFailWithError:(NSError *)error
{
    NSLog(@"Object loading failed with error: %@ ----- body: %@", error.localizedDescription, objectLoader.response.bodyAsString);
}


- (void)objectLoader:(RKObjectLoader *)objectLoader didLoadObjects:(NSArray *)objects
{
    NSLog(@"Objects received: %@", objects);
    NSLog(@"Respond body: %@", objectLoader.response.bodyAsString);
}

这是JSON响应

{"error":{"error":1,"code":342,"message":"You have already rated this one"}}

当我查看REST PHP后端的$ _POST值时，它实际上是空的，这意味着它没有收到发布对象......为什么会这样？我的路由似乎没问题？

Answer 1

您是否可以控制您的后端服务？

如果是这样，我会改变你发回数据的方式。当您进行“postObject”调用时，唯一预期的响应是“评级”。我意识到你设置了一个“错误”映射，但是因为你发布的对象是一个“评级”对象，所以它期待回来。

这里更合适的是服务将HTTP状态代码更改为403（禁止），或者不是200（OK）。然后你可以处理“objectLoader：didFailWithError：”委托方法中的错误。

Restkit对象映射在映射期间遇到错误

1 个答案: