Ios 使用复杂对象数组的RestKit映射

我一直在很好地解析JSON，但我的服务器刚刚发生了变化。我的JSON过去是这样的：

{
    "blobs": [  
        {
            "createdOn": "2012-03-16T15:13:12.551Z",
            "description": "Fake description",
            "hint": "And a useless hint",
            "id": 400,
            "name": "Fake CA one",
            "publicId": "FF6",
            "type": 0
        },
        {
            "createdOn": "2012-03-16T17:33:48.514Z",
            "description": "No hint on this one, but it does have a description.",
            "hint": "Hint",
            "id": 402,
            "name": "Second fake one in CA",
            "publicId": "FF8",
            "type": 0
        }
    ]
}

RKObjectMapping* blobMapping = [RKObjectMapping mappingForClass:[GetResponseInRegionResponse class]];

[blobMapping mapKeyPath:@"name" toAttribute:@"name"];
[blobMapping mapKeyPath:@"id" toAttribute:@"blobId"];
[blobMapping mapKeyPath:@"description" toAttribute:@"description"];
[blobMapping mapKeyPath:@"hint" toAttribute:@"hint"];

[[RKObjectManager sharedManager].mappingProvider setMapping:blobMapping forKeyPath:@"blobs"];

我的地图是这样的：

{
    "blobs": [  
        {
            "createdOn": "2012-03-16T15:13:12.551Z",
            "description": "Fake description",
            "hint": "And a useless hint",
            "id": 400,
            "name": "Fake CA one",
            "publicId": "FF6",
            "type": 0
        },
        {
            "createdOn": "2012-03-16T17:33:48.514Z",
            "description": "No hint on this one, but it does have a description.",
            "hint": "Hint",
            "id": 402,
            "name": "Second fake one in CA",
            "publicId": "FF8",
            "type": 0
        }
    ]
}

RKObjectMapping* blobMapping = [RKObjectMapping mappingForClass:[GetResponseInRegionResponse class]];

[blobMapping mapKeyPath:@"name" toAttribute:@"name"];
[blobMapping mapKeyPath:@"id" toAttribute:@"blobId"];
[blobMapping mapKeyPath:@"description" toAttribute:@"description"];
[blobMapping mapKeyPath:@"hint" toAttribute:@"hint"];

[[RKObjectManager sharedManager].mappingProvider setMapping:blobMapping forKeyPath:@"blobs"];

现在，我的服务器已更改，我得到了以下信息：

{
    "blobsList": {
        "blobs": [  
            {
                "createdOn" :"2012-03-16T15:13:12.551Z",
                "description": "Fake description",
                "hint": "And a useless hint",
                "id": 400,
                "name": "Fake CA one",
                "publicId": "FF6",
                "type": 0
            },
            {
                "createdOn": "2012-03-16T17:33:48.514Z",
                "description": "No hint on this one, but it does have a description.",
                "hint": "Hint",
                "id": 402,
                "name": "Second fake one in CA",
                "publicId": "FF8",
                "type": 0
            }
        ]
    }
}

因此，我在映射中添加了以下内容：

RKObjectMapping* blobsListMapping = [RKObjectMapping mappingForClass:[GetResponseInRegionResponseList class]];
[blobsListMapping mapKeyPath:@"blobsList" toAttribute:@"blobsList"];

[[RKObjectManager sharedManager].mappingProvider setMapping:blobsListMapping forKeyPath:@"blobsList"];

我的课程是：

@interface GetResponseInRegionResponse : NSObject
{
    NSString* name;
    NSString* blobId;
    NSString* description;
    NSString* hint;
}       

@interface GetResponseInRegionResponseList : NSObject
{
    NSArray  *blobsList;
}

当我解析这个JSON时，我得到一个包含两个对象的JKArray的对象，这两个对象都是JKDictionary对象。很明显，这是我的数据，但它是以字典的形式存在的。它从未映射到GetResponseInRegionResponse类

通过阅读github文档，我似乎想对数组使用toRelationship方法，但我不知道该将其放在哪里。如果我遵循“文章”示例并尝试以下方法：

[blobListMapping mapKeyPath:@"blobs" toAttribute:@"blobsList"];
[blobListMapping mapKeyPath:@"blobs" toRelationship:@"blobsList" withMapping:blobMapping];

我得到一个例外：

2012-03-19 14:59:53.704 Ferret[8933:16303] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Unable to add mapping for keyPath blobsList, one already exists...'

那么，如何在JSON中映射复杂对象的数组

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谢谢你的帮助。谢谢

您是否只尝试过改变

    [[RKObjectManager sharedManager].mappingProvider setMapping:blobMapping forKeyPath:@"blobsList.blobs"];

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要反映更改后的数据数组路径？

接受的答案似乎是针对v0.2之前的版本，即当前版本。我的解决方案看起来略有不同，代码粘贴如下：

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当我这样做时，我得到：。--***由于未捕获的异常“NSUnknownKeyException”而终止应用程序，原因：“[valueForUndefinedKey:]：该类不符合密钥id的键值编码。“啊，这是我的错误，JSON有一个标记为“id”的元素，我有一个名为“blobId”而不是“id”的类成员。但我还需要加入toRelationship部分。我从RestKit邮件列表上查到的。如果那个人在这里插话说问题的那一部分，我看我能不能把赏金分给你们两个。非常感谢你！JSON的设置方式不需要关系。在对象“blobsList”中，直接有另一个对象“blobs”，只有在那里才有数组。“blobList”永远不会包含数组，如果它真的像您的示例中那样的话。是的，我需要进一步检查它。现在我的didLoadObject的对象是由3个而不是2个对象组成的数组，外部对象和2个内部对象。真奇怪。。。我明天试试。谢谢对我忘了提到你应该保留你原来的设置，只在上面添加一行-没有额外的关系…谢谢，但如果它使用类名和关键路径，从问题而不是“事件”等等，那就更清楚了@murrayc免费编辑我两年前的答案，如果你认为它更有用的话！