如何使用Restkit映射空的200响应?

如上所述 in this post ,还有更好的解决方案。

您可以简单地将带有ObjectMapping的ResponseDescriptor添加到NSNull:

// Create RKObjectMapping for NSNull:
RKObjectMapping* responseMapping = [RKObjectMapping mappingForClass:[NSNull class]];

// Create RKResponseDescriptor with mapping:
RKResponseDescriptor* response = [RKResponseDescriptor responseDescriptorWithMapping:responseMapping
                                                                              method:RKRequestMethodAny
                                                                         pathPattern:@"/yourPathPattern"       
                                                                             keyPath:nil
                                                                         statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];


// Add RKResponseDescriptor to RKObjectManager:
[[RKObjectManager sharedManager] addResponseDescriptor:response];

在这种情况下,您不应该有两个响应描述符,而应该只有一个。一个响应描述符链接到 dynamic mapping 它分析响应并返回适当的映射(来自2个现有映射)。