RKObjectMapping 中的混淆设置映射 - Rest

Posted 2023-02-23

【中文标题】RKObjectMapping 中的混淆设置映射 - Rest

【英文标题】：Confusion setting mapping in RKObjectMapping - Rest

【发布时间】：2013-09-19 08:47:55

【问题描述】：

请帮助使用 RestKit 进行设置映射，我不知道该怎么做。

我的 JSON 是这样的

"result":
    "success":"1",
    "message":"You logged in successfully.",
    "data":
        "user_id":"1",
        "firstname":"somefirstname",
        "lastname":"somelastname",
        "username":"someusername",
        "country_id":"someid",
        "country_name":"somecountry",
        "phone":"1234567890",
        "status":"active"
        
    

到目前为止我所做的是

RKObjectMapping *loginMapping = [RKObjectMapping mappingForClass:[Login class]];
[loginMapping addAttributeMappingsFromDictionary:@ @"user_id":@"intUserID", @"firstname":@"strFirstName", @"lastname":@"strLastName"];        
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:loginMapping
                                                                                            method:RKRequestMethodGET
                                                                                       pathPattern:@"PathTOLogin"
                                                                                          keyPath:@"result.data"
                                                                                      statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];

[AFNetworkActivityIndicatorManager sharedManager].enabled = YES;
NSURL *baseURL = [NSURL URLWithString:kAPIBaseURLString];
AFHTTPClient* client = [[AFHTTPClient alloc] initWithBaseURL:baseURL];
RKObjectManager *objectManager = [[RKObjectManager alloc] initWithHTTPClient:client];
Login *loginObject = [[Login alloc] init];
[objectManager getObject:loginObject path:kUserLogin parameters:params success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) 
 failure:^(RKObjectRequestOperation *operation, NSError *error) 
];

问题就像有时 JSON 响应可能是这样的

"result":
    "success":"0",
    "message":"Invalid Username or Password",      
     

所以会报错

Error Domain=org.restkit.RestKit.ErrorDomain Code=1001

所以我想在 Model 类中添加另外 2 个属性作为成功/消息以及所有其他属性，但我坚持设置自定义映射，因为这些属性位于根目录上，而其他属性位于关键路径“result.data”中。

有人可以帮忙吗？

【参考方案1】：

您应该将您的登录映射更改为：

RKObjectMapping *loginMapping = [RKObjectMapping mappingForClass:[Login class]];
[loginMapping addAttributeMappingsFromDictionary:@ @"success":@"success", @"message":@"message", @"data.user_id":@"intUserID", @"data.firstname":@"strFirstName", @"data.lastname":@"strLastName"];        
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:loginMapping
                                                                                        method:RKRequestMethodGET
                                                                                   pathPattern:@"PathTOLogin"
                                                                                       keyPath:@"result"
                                                                                   statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];

基本上，从响应描述符的键路径中删除“数据”，然后在映射键路径中使用它。

【参考方案2】：

您可以先通过检查以下条件来检查数据是否存在

if([yourDictionary valueForKeyPath:@"result.data"])

   RKObjectMapping *loginMapping = [RKObjectMapping mappingForClass:[Login class]];
[loginMapping addAttributeMappingsFromDictionary:@ @"user_id":@"intUserID", @"firstname":@"strFirstName", @"lastname":@"strLastName"];        
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:loginMapping
                                                                                            method:RKRequestMethodGET
                                                                                       pathPattern:@"PathTOLogin"
                                                                                          keyPath:@"result.data"
                                                                                      statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];

[AFNetworkActivityIndicatorManager sharedManager].enabled = YES;
NSURL *baseURL = [NSURL URLWithString:kAPIBaseURLString];
AFHTTPClient* client = [[AFHTTPClient alloc] initWithBaseURL:baseURL];
RKObjectManager *objectManager = [[RKObjectManager alloc] initWithHTTPClient:client];
Login *loginObject = [[Login alloc] init];
[objectManager getObject:loginObject path:kUserLogin parameters:params success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) 
 failure:^(RKObjectRequestOperation *operation, NSError *error) 
];


else
    NSLog(@"No data available");

希望这会对您有所帮助。

【讨论】：

映射是使用restkit完成的，这仍然适用吗？

你一定在 RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor respon..... 这行仪式上遇到错误？所以把你的整个代码放在 if 条件中，如果数据不可用，则在 else 部分处理这种情况..

我已经更新了如何调用，它总是进入失败块并出现我说的错误。

感谢您的帮助，但无济于事。