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我目前正在使用带有 RKTBXMLSerialization 的 RestKit 来与基于 xml 的 web 服务进行通信。我有一个非常特殊的问题,即对象映射一个呼叫的响应。这个特殊元素有一个与节点本身同名的属性,比如说:

<List ListName="List1">
  <Item Name="ItemName1" Item="ItemValue1" />
  <Item Name="ItemName2" Item="ItemValue2" />
</List>

我相应的映射如下所示:

RKObjectMapping *listMapping = [RKObjectMapping mappingForClass:[ListModel class]];
[listMapping addAttributeMappingsFromArray:@[@"ListName"]];

RKObjectMapping *itemMapping = [RKObjectMapping mappingForClass:[ItemModel class]];
[itemMapping addAttributeMappingsFromArray:@[@"Name", @"Item"]];

RKRelationshipMapping *itemRelationship = [RKRelationshipMapping relationshipMappingFromKeyPath:@"Item" toKeyPath:@"Items" withMapping:itemMapping];

[listMapping addPropertyMapping:itemRelationship];

RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:listMapping method:RKRequestMethodGET pathPattern:nil keyPath:@"List" statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];

[[RKObjectManager sharedManager] addResponseDescriptorsFromArray:@[responseDescriptor]];

使用这些模型类:

@interface ListModel : NSObject
  @property (nonatomic, strong) NSArray* Items;
  @property (nonatomic, copy) NSString* ListName;
@end

@interface ItemModel : NSObject
  @property (nonatomic, copy) NSString* Name;
  @property (nonatomic, copy) NSString* Item;
@end

我得到的错误信息是:

'NSUnknownKeyException', reason: '[<__NSCFString 0xb816420> valueForUndefinedKey:]: this class is not key value coding-compliant for the key Item.'

我已经尝试了很多,并且可以将问题追溯到 xml 结构中的重复名称“项目”。由于我无法影响响应模式,我需要一个客户端解决方案。

问题也可能在 RKTBXMLSerialization (TBXML) 内部,所以我将尝试 RKXMLReaderSerialization。有没有人已经遇到过这个问题甚至解决方案?

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1 回答 1

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正如我已经发布的那样,我现在也尝试了 RKXMLReaderSerialization 并且问题消失了。代码方面的解决方案正在改变

[RKMIMETypeSerialization registerClass:[RKTBXMLSerialization class] forMIMEType:@"application/xml"];

[RKMIMETypeSerialization registerClass:[RKXMLReaderSerialization class] forMIMEType:@"application/xml"];

我将在 GitHub 上发布 RKTBXMLSerialization 的问题,所以它可能会在未来的版本中得到修复。

于 2013-12-07T13:10:01.863 回答