在我的应用程序中，我有一个Settings类，它使用RestKit映射服务器响应。
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
...
[manager.router.routeSet addRoute:[RKRoute routeWithClass:[Settings class]
pathPattern:kAPIPathSettingsAllRequest
method:RKRequestMethodGET]];
[manager.router.routeSet addRoute:[RKRoute routeWithClass:[Settings class]
pathPattern:kAPIPathSettingsAllRequest
method:RKRequestMethodPOST]];
...
}
@property (nonatomic, retain) Settings *settings;
- (void)loadSettings
{
[[RKObjectManager sharedManager] getObject:_settings
path:nil
parameters:SessionTokenDictionary()
success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult)
{
RKLogInfo(@"Settings received: %@", mappingResult.firstObject);
[self.tableView reloadData];
}
failure:^(RKObjectRequestOperation *operation, NSError *error)
{
RKLogError(@"Failed getting settings: %@", error);
}];
}
#import <Foundation/Foundation.h>
#import "RKSupportDelegate.h"
@interface Settings : NSObject <RKSupportDelegate>
@property (nonatomic, assign) BOOL flightStatusUpdated;
@property (nonatomic, assign) BOOL friendInTheCity;
@property (nonatomic, assign) BOOL friendRequest;
#import <RestKit/RestKit.h>
#import "Settings.h"
@implementation Settings
+ (RKMapping *)mapping
{
RKObjectMapping* responseMapping = [RKObjectMapping mappingForClass:[self class]];
[responseMapping addAttributeMappingsFromDictionary:@{
@"push_friends": @"friendRequest",
@"my_flight_status": @"flightStatusUpdated",
@"meet_friends": @"friendInTheCity",
}];
return responseMapping;
}
+ (void)generateRKDescriptors
{
/*
* Response
*/
RKResponseDescriptor *responseDescriptor;
NSIndexSet *codesSet = [NSIndexSet indexSetWithIndexesInRange:RKStatusCodeRangeForClass(RKStatusCodeClassSuccessful)];
responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:[self mapping]
method:RKRequestMethodAny
pathPattern:nil
keyPath:@"settings"
statusCodes:codesSet];
[[RKObjectManager sharedManager] addResponseDescriptor:responseDescriptor];
/*
* Request
*/
RKObjectMapping *requestMapping = [RKObjectMapping requestMapping];
[requestMapping addAttributeMappingsFromDictionary:@{
@"friendRequest": @"push_friends",
@"flightStatusUpdated": @"my_flight_status",
@"friendInTheCity": @"meet_friends",
}];
RKRequestDescriptor *requestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:requestMapping objectClass:[self class] rootKeyPath:nil method:RKRequestMethodAny];
[[RKObjectManager sharedManager] addRequestDescriptor:requestDescriptor];
}
2014-06-23 15:23:22.369 App[16622:410b] D restkit.network:RKResponseMapperOperation.m:463 Mapping HTTP response to unmanaged target object with `RKManagedObjectResponseMapperOperation`: <Settings: 0x1a484470>
2014-06-23 15:23:22.624 App[16622:700f] T restkit.network:RKObjectRequestOperation.m:218 GET '<.....>' (200 OK / 0 objects) [request=0.0000s mapping=0.0114s total=0.5428s]:
response.headers={
"Access-Control-Allow-Origin" = "*";
"Cache-Control" = "private, no-cache, no-store, must-revalidate";
Connection = "Keep-Alive";
"Content-Length" = 390;
"Content-Type" = "application/json; charset=UTF-8";
Date = "Mon, 23 Jun 2014 13:23:22 GMT";
Expires = "Mon, 26 Jul 1997 05:00:00 GMT";
"Keep-Alive" = "timeout=5, max=100";
Pragma = "no-cache";
Server = Apache;
}
response.body={
"settings": {
"push_friends": false,
"my_flight_status": false,
"meet_friends": false,
}
}
2014-06-23 15:23:23.105 App[16622:60b] T restkit.network:RKObjectRequestOperation.m:148 GET '<.....>':
request.headers={
Accept = "application/json";
"Accept-Language" = "de;q=1, en;q=0.9, fr;q=0.8, ja;q=0.7, nl;q=0.6, it;q=0.5";
"User-Agent" = "App/1.5.1 (iPhone; iOS 7.1.1; Scale/2.00)";
}
request.body=(null)
2014-06-23 15:23:23.123 App[16622:60b] I app:SettingsViewController.m:370 Settings received: (null)
我不明白为什么映射不起作用，显然导致：
2014-06-23 15:23:23.123 App[16622:60b] I app:SettingsViewController.m:370 Settings received: (null)
和此：
2014-06-23 15:23:22.369 App[16622:410b] D restkit.network:RKResponseMapperOperation.m:463 Mapping HTTP response to unmanaged target object with 'RKManagedObjectResponseMapperOperation': <Settings: 0x1a484470>
我希望有人可以帮助我。非常感谢！
2014-06-23 16:47:47.363 App[17122:3e13] D restkit.object_mapping:RKMapperOperation.m:378 Executing mapping operation for representation: {
settings = {
"meet_friends" = 0;
"my_flight_status" = 0;
"push_friends" = 0;
};
}
and targetObject: <Settings: 0x18c21860>
2014-06-23 16:47:47.366 App[17122:3e13] T restkit.object_mapping:RKMapperOperation.m:321 Examining keyPath '' for mappable content...
2014-06-23 16:47:47.368 App[17122:3e13] D restkit.object_mapping:RKMapperOperation.m:301 Found mappable data at keyPath '': {
settings = {
"push_friends" = 0;
"my_flight_status" = 0;
"meet_friends" = 0;
};
}
2014-06-23 16:54:29.044 App[17122:4433] D restkit.object_mapping:RKMapperOperation.m:230 Asked to map source object {
settings = {
"push_friends" = 0;
"my_flight_status" = 0;
"meet_friends" = 0;
};
} with mapping <RKObjectMapping:0x155c36f0 objectClass=User propertyMappings=(
"<RKAttributeMapping: 0x155c3740 countries => countriesCount>",
"<RKAttributeMapping: 0x155c3910 type => type>",
"<RKAttributeMapping: 0x155c3990 requested_me => requestedMe>",
"<RKAttributeMapping: 0x155c3a30 last_name => lastName>",
"<RKAttributeMapping: 0x155c39f0 gender => gender>",
"<RKAttributeMapping: 0x155c3a10 cities => citiesCount>",
"<RKAttributeMapping: 0x155c3da0 first_name => firstName>",
"<RKAttributeMapping: 0x155c4000 uid => uid>",
"<RKAttributeMapping: 0x155c4020 status => status>",
"<RKAttributeMapping: 0x155c4040 name => name>",
"<RKAttributeMapping: 0x155c3f60 miles => miles>",
"<RKAttributeMapping: 0x155c3f80 level => level>",
"<RKAttributeMapping: 0x155c4060 city => city>",
"<RKAttributeMapping: 0x155c4080 email => email>"
)>
2014-06-23 16:54:29.078 App[17122:4433] D restkit.object_mapping:RKMappingOperation.m:859 Starting mapping operation...
2014-06-23 16:54:29.143 App[17122:4433] T restkit.object_mapping:RKMappingOperation.m:860 Performing mapping operation: <RKMappingOperation 0x15781140> for 'User' object. Mapping values from object {
settings = {
"push_friends" = 0;
"my_flight_status" = 0;
"meet_friends" = 0;
};
} to object <User: uid=0, status=0, name=(null), miles=0, city=(null), level=(null), friend status:(null), statsInfo:(null), citiesCount:0, countriesCount:0> with object mapping (null)
2014-06-23 16:54:29.162 App[17122:4433] T restkit.object_mapping:RKMappingOperation.m:518 Did not find mappable attribute value keyPath 'countries'
2014-06-23 16:54:29.195 App[17122:4433] T restkit.object_mapping:RKMappingOperation.m:518 Did not find mappable attribute value keyPath 'home_airport'
2014-06-23 16:54:29.205 App[17122:4433] T restkit.object_mapping:RKMappingOperation.m:518 Did not find mappable attribute value keyPath 'isfriend'
2014-06-23 16:54:29.329 App[17122:4433] T restkit.object_mapping:RKMappingOperation.m:518 Did not find mappable attribute value keyPath 'name'
...
答案 0 :(得分：1)
当您创建响应描述符集时：
pathPattern:nil
并且可能您有许多其他响应描述符也是如此。您还必须有一些带有nil密钥路径的响应描述符。
这意味着RestKit无法正确过滤响应描述符，并尝试应用所有匹配项 - 这会导致一些错误且无意义的映射。
因此，将最严格的路径模式和密钥路径规范应用于响应描述符，以防止这种情况并提高性能。