Question

我正在尝试使用RestKit 0.20处理包含嵌套字典的休息响应。这是我正在尝试处理的json响应：

{
"name": "Tom",
"msgTo": "Hi ",
"msgFrom": "Hey",
"uuid": "4",
"ClientInfo": {
    "Tom": {
        "AttributeA": "0",
        "AttributeB": "28"
    },
    "Sam": {
        "AttributeA": "10",
        "AttributeB": "28"
    }
}

}

问题出在ClientInfo对象周围。该对象是使用pojo jackson序列化从服务器发布的地图[Map＆gt;]的序列化Java地图。

这是iOS / RestKit中我用来处理响应的2个模型：

@interface IAPClientInfo : NSObject
@property (weak, nonatomic) NSString * mapName;
@property (weak,nonatomic) NSString *propertyCount;
@property (weak,nonatomic) NSString *affinityValue;
@end

@interface IAPClientMessage : NSObject
@property (weak, nonatomic) NSString * name;
@property (weak, nonatomic) NSString * msgTo;
@property (weak, nonatomic) NSString * msgFrom;
@property (weak, nonatomic) NSString * uuid;
// should this be an array?
@property (weak, nonatomic) NSArray * iapClientInfoArray;
@end

这是代码

// inner mapping
RKObjectMapping *clientInfoMapping = [RKObjectMapping mappingForClass:[IAPClientInfo class]];
[clientInfoMapping setForceCollectionMapping:YES];
[clientInfoMapping addAttributeMappingFromKeyOfRepresentationToAttribute:@"mapName"];
[clientInfoMapping addAttributeMappingsFromDictionary:@{@"(mapName).AttributeA" : @"propertyCount", @"(mapName).AttributeB" : @"affinityValue"}];

// outer mapping
RKObjectMapping *messageMapping = [RKObjectMapping mappingForClass:[IAPClientMessage class]];    
[messageMapping addAttributeMappingsFromDictionary:@{@"msgFrom" : @"msgFrom",@"msgTo" : @"msgTo",@"uuid" : @"uuid",@"name" : @"name"}];

// relationship b/w inner and outer   
RKRelationshipMapping *relationshipMapping = [RKRelationshipMapping relationshipMappingFromKeyPath:@"ClientInfo" toKeyPath:@"iapClientInfoArray" withMapping:clientInfoMapping];
[messageMapping addPropertyMapping:relationshipMapping];

// response
RKResponseDescriptor * responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:messageMapping
                                                                                    pathPattern:nil
                                                                                        keyPath:@""
                                                                                  statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
[objectManager addResponseDescriptor:responseDescriptor];

处理响应时，除了iapClientInfoArray属性（为null）之外，IAPClientMessage中的属性都是预期的。虽然有多个IAPClientInfo对象，但在json响应中，不清楚IAPClientMessage中的属性应该是什么（当前设置为NSArray *）。有任何建议使这项工作正常吗？

TX。

Answer 1

我通过将所有属性从“弱”改为“强”来实现这一点。

首先，我根据您的建议启动了日志记录

RKLogConfigureByName（“RestKit / ObjectMapping”，RKLogLevelTrace）;

它显示正确填充了IAPClientInfo和IAPClientMessage对象，表明基本设置没有问题。

IAPClientInfo对象正在正确填充但是为空，因此我怀疑存在内存管理问题。

阅读本文

http://www.raywenderlich.com/5677/beginning-arc-in-ios-5-part-1

澄清了所需的用法 - 我需要所有属性“拥有”他们所指向的内容。因此，我需要他们使用'强'而不是'弱'语义。我正在使用ARC。一旦'创建'代码超出范围，'弱'语义会使指针（我怀疑）指向'nil'。

一旦以这种方式改变了属性，一切都按预期工作 - iapClientInfoArray *指向正确构造的IAPClientInfo实例的数组。

感谢。

嵌套字典与RestKit 0.2.0

1 个答案: