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Restful Webservice に RestKit を使用して、LAMP 環境と iOS アプリの間で通信したいと考えています。したがって、利用可能なチュートリアルとRestKitページで説明されているように、すべてがうまくいくかどうかを確認するための最初のテストを行いました.

現在、コードは次のようになっています。

RKObjectManager* objectManager = [RKObjectManager managerWithBaseURLString:@"http://localhost/resttest"];

objectManager.client.requestQueue.showsNetworkActivityIndicatorWhenBusy = YES;

#ifdef RESTKIT_GENERATE_SEED_DB
    NSString *seedDatabaseName = nil;
    NSString *databaseName = RKDefaultSeedDatabaseFileName;
#else
    NSString *seedDatabaseName = RKDefaultSeedDatabaseFileName;
    NSString *databaseName = @"CoreData.sqlite";
#endif

objectManager.objectStore = [RKManagedObjectStore objectStoreWithStoreFilename:databaseName usingSeedDatabaseName:seedDatabaseName managedObjectModel:nil delegate:self];

// Map Person Object
RKManagedObjectMapping *personMapping = [RKManagedObjectMapping mappingForClass:[Person class] inManagedObjectStore:objectManager.objectStore];
//RKManagedObjectMapping *personMapping = [RKManagedObjectMapping mappingForEntityWithName:@"Person" inManagedObjectStore:[RKObjectManager sharedManager].objectStore];
[personMapping mapKeyPath:@"id" toAttribute:@"person_id"];
[personMapping mapKeyPath:@"firstname" toAttribute:@"person_firstname"];
[personMapping mapKeyPath:@"lastname" toAttribute:@"person_lastname"];
[personMapping mapKeyPath:@"gender" toAttribute:@"person_gender"];
personMapping.primaryKeyAttribute = @"id";


// Register our mappings with the provider;    
[objectManager.mappingProvider setMapping:personMapping forKeyPath:@"/person"];
objectManager.acceptMIMEType = RKMIMETypeJSON;

#ifdef RESTKIT_GENERATE_SEED_DB
    RKLogConfigureByName("RestKit/ObjectMapping", RKLogLevelInfo);
    RKLogConfigureByName("RestKit/CoreData", RKLogLevelTrace);
#endif

[objectManager loadObjectsAtResourcePath:@"/person" delegate:self];



これは私の管理対象オブジェクトがどのように見えるかです:

@interface Person : NSManagedObject

@property (nonatomic, retain) NSString * person_firstname;
@property (nonatomic, retain) NSString * person_lastname;
@property (nonatomic, retain) NSString * person_gender;
@property (nonatomic, retain) NSNumber * person_id;

@end



そして、これはサーバー側のダミーコードで、json の例の文字列のみを返します。

<?php

    header('Content-type: application/json');

    if($_SERVER['REQUEST_METHOD'] == 'GET')
    {
        $json_string = '{ "persons": [
                            { "id": "1",
                              "firstname": "hans",
                              "lastname": "maier",
                              "genre": "m"
                            },
                            { "id": "2",
                              "firstname": "michael",
                              "lastname": "schmidt",
                              "genre": "w"
                            }]
                        }';

        echo $json_string;
    }

?>


返された json-String を取得する URI はhttp://localhost/resttest/person(/index.php ) です。


私の問題は次のとおりです。

  • 「」のリソースパスを定義しないと、常にこのエラーが発生します。

    E restkit.network:RKObjectLoader.m:216 マッピング中にエラーが発生しました: keyPath のオブジェクト マッピングが見つかりませんでした: ''

なぜこれが起こるのかわかりません。私が試した他の例にはこの問題はありませんが、何が間違っているのかわかりません。

  • それが機能すると (ベース URL をhttp://localhost/resttest/personに変更する必要があります)、エラーではなく空のオブジェクトが返されます。



今のところ何が間違っているのかわからないので、このトピックに関する助けをいただければ幸いです。

ありがとうございました！

2012 年 3 月 5 日を編集:

ログに記録される内容は次のとおりです。

2012-05-03 12:52:05.067 RESTKitCoreDataTest[5139:13807] D restkit.object_mapping:RKObjectMapper.m:320 Performing object mapping sourceObject: {
    persons =     (
                {
            firstname = hans;
            gender = m;
            id = 1;
            lastname = maier;
        },
                {
            firstname = michael;
            gender = w;
            id = 2;
            lastname = schmidt;
        }
    );
}
 and targetObject: (null)
2012-05-03 12:52:05.067 RESTKitCoreDataTest[5139:13807] T restkit.object_mapping:RKObjectMapper.m:278 Examining keyPath '' for mappable content...
2012-05-03 12:52:05.067 RESTKitCoreDataTest[5139:13807] D restkit.object_mapping:RKObjectMapper.m:264 Found mappable data at keyPath '': {
    persons =     (
                {
            firstname = hans;
            gender = m;
            id = 1;
            lastname = maier;
        },
                {
            firstname = michael;
            gender = w;
            id = 2;
            lastname = schmidt;
        }
    );
}
2012-05-03 12:52:05.073 RESTKitCoreDataTest[5139:13807] D restkit.object_mapping:RKObjectMapper.m:210 Asked to map source object {
    persons =     (
                {
            firstname = hans;
            gender = m;
            id = 1;
            lastname = maier;
        },
                {
            firstname = michael;
            gender = w;
            id = 2;
            lastname = schmidt;
        }
    );
} with mapping <RKManagedObjectMapping:0x811eb60 objectClass=Person keyPath mappings => (
    "RKObjectKeyPathMapping: id => person_id",
    "RKObjectKeyPathMapping: firstname => person_firstname",
    "RKObjectKeyPathMapping: lastname => person_lastname",
    "RKObjectKeyPathMapping: gender => person_gender"
)>
2012-05-03 12:52:05.074 RESTKitCoreDataTest[5139:13807] D restkit.object_mapping:RKObjectMappingOperation.m:617 Starting mapping operation...
2012-05-03 12:52:05.074 RESTKitCoreDataTest[5139:13807] T restkit.object_mapping:RKObjectMappingOperation.m:618 Performing mapping operation: RKObjectMappingOperation for 'Person' object. Mapping values from object {
    persons =     (
                {
            firstname = hans;
            gender = m;
            id = 1;
            lastname = maier;
        },
                {
            firstname = michael;
            gender = w;
            id = 2;
            lastname = schmidt;
        }
    );
} to object <Person: 0x6e295d0> (entity: Person; id: 0x6e29610 <x-coredata:///Person/t99EFF6DC-EBDA-405C-8AFF-D082E4A8542F2> ; data: {
    "person_firstname" = nil;
    "person_gender" = nil;
    "person_id" = 0;
    "person_lastname" = nil;
}) with object mapping <RKManagedObjectMapping:0x811eb60 objectClass=Person keyPath mappings => (
    "RKObjectKeyPathMapping: id => person_id",
    "RKObjectKeyPathMapping: firstname => person_firstname",
    "RKObjectKeyPathMapping: lastname => person_lastname",
    "RKObjectKeyPathMapping: gender => person_gender"
)>
2012-05-03 12:52:05.074 RESTKitCoreDataTest[5139:13807] T restkit.object_mapping:RKObjectMappingOperation.m:388 Did not find mappable attribute value keyPath 'id'
2012-05-03 12:52:05.074 RESTKitCoreDataTest[5139:13807] T restkit.object_mapping:RKObjectMappingOperation.m:388 Did not find mappable attribute value keyPath 'firstname'
2012-05-03 12:52:05.075 RESTKitCoreDataTest[5139:13807] T restkit.object_mapping:RKObjectMappingOperation.m:388 Did not find mappable attribute value keyPath 'lastname'
2012-05-03 12:52:05.075 RESTKitCoreDataTest[5139:13807] T restkit.object_mapping:RKObjectMappingOperation.m:388 Did not find mappable attribute value keyPath 'gender'
2012-05-03 12:52:05.075 RESTKitCoreDataTest[5139:13807] D restkit.object_mapping:RKObjectMappingOperation.m:638 Mapping operation did not find any mappable content
2012-05-03 12:52:05.075 RESTKitCoreDataTest[5139:13807] T restkit.core_data:RKManagedObjectMappingOperation.m:98 relationshipsAndPrimaryKeyAttributes: {
}
2012-05-03 12:52:05.075 RESTKitCoreDataTest[5139:13807] D restkit.object_mapping:RKObjectMapper.m:351 The following operations are in the queue: (
)
2012-05-03 12:52:05.075 RESTKitCoreDataTest[5139:13807] D restkit.object_mapping:RKObjectMapper.m:366 Finished performing object mapping. Results: {
}
2012-05-03 12:52:05.080 RESTKitCoreDataTest[5139:fb03] Loaded persons: (
)
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1 に答える 1

1

可能性1：

マッピングを間違ったキーパスに設定しているようです。

試す

// Register our mappings with the provider;    
[objectManager.mappingProvider setMapping:personMapping forKeyPath:@"persons"];

それが機能するかどうかを確認します。

可能性2：

マッピングでJSONのルートパスを指定します。

試す

// Map Person Object
RKManagedObjectMapping *personMapping = [RKManagedObjectMapping mappingForClass:[Person class] inManagedObjectStore:objectManager.objectStore];
[personMapping mapKeyPath:@"id" toAttribute:@"person_id"];
[personMapping mapKeyPath:@"firstname" toAttribute:@"person_firstname"];
[personMapping mapKeyPath:@"lastname" toAttribute:@"person_lastname"];
[personMapping mapKeyPath:@"gender" toAttribute:@"person_gender"];
personMapping.rootKeyPath = @"persons";
personMapping.primaryKeyAttribute = @"id";

それが機能するかどうかを確認します。

于 2012-05-03T12:37:34.093 に答える