Question

我有一个Web服务，它以下列格式返回JSON：

{
"client": {
         "firstName": "Aaron"
         },
"error": {
         "code":""
         }
}

我正在设置restkit中的映射。我一直收到以下错误：

Error Domain=org.restkit.RestKit.ErrorDomain Code=1001 "Could not find an object mapping for keyPath: ''" UserInfo=0x5961f0 {=RKObjectMapperKeyPath, NSLocalizedDescription=Could not find an object mapping for keyPath: ''}

以下是我设置映射的方法：

    [[RKObjectManager sharedManager].mappingProvider setMapping:[Client objectMapping] forKeyPath:@"client"];
    [[RKObjectManager sharedManager].mappingProvider setMapping:[ErrorObject objectMapping] forKeyPath:@"error"];

客户端映射：

+(RKObjectMapping*) objectMapping {
   RKObjectMapping* responseObjectMapping = [RKObjectMapping mappingForClass:[Client class]];
   [responseObjectMapping setRootKeyPath:@"client"];
   [responseObjectMapping mapKeyPathsToAttributes:
    @"firstName", @"firstName",
    nil];
   return responseObjectMapping;
}

错误映射：

+(RKObjectMapping*) objectMapping {
   RKObjectMapping* responseObjectMapping = [RKObjectMapping mappingForClass:[ErrorObject class]];
   [responseObjectMapping setRootKeyPath:@"error"];
   [responseObjectMapping mapKeyPathsToAttributes:
    @"code", @"code",
    nil];
   return responseObjectMapping;
}

并按照以下方式调用服务：

//Send initial load request
[[RKObjectManager sharedManager] loadObjectsAtResourcePath:[@"/getdetails" stringByAppendingQueryParameters:params] usingBlock:^(RKObjectLoader *loader) {
    loader.delegate = self;
    loader.userData = INITIAL_LOAD_REQUEST;
}];

修改

我通过遵循以下建议解决了我的问题，并将我的映射从init方法移动到在对象加载器块中设置它，如下所示：

    //Send initial load request
[[RKObjectManager sharedManager] loadObjectsAtResourcePath:[@"/getdetails" stringByAppendingQueryParameters:params] usingBlock:^(RKObjectLoader *loader) {
    loader.delegate = self;

    //set mapping explicitly
    RKObjectMappingProvider *provider = [[RKObjectMappingProvider alloc] init];
    [provider setMapping:[Clien objectMapping] forKeyPath:@"client"];
    [provider setMapping:[ErrorObject objectMapping] forKeyPath:@"error"];
    [loader setMappingProvider:provider];

    loader.userData = INITIAL_LOAD_REQUEST;
}];

Answer 1

删除行

[responseObjectMapping setRootKeyPath:@"client"];

和

[responseObjectMapping setRootKeyPath:@"error"];

具有多个根对象的Restkit对象映射

1 个答案: