JSONModel无效的JSON数据

Question

我有这个Json的ASP MVC API 我有InvModel和LotModel

但是当我打电话时

_InvFeed = [[InvModel alloc] initFromURLWithString:@"http://192.168.1.206/service/api/dto/inventory/1?p=Red%20Globe"
                                        completion:^(JSONModel *model, JSONModelError *err) 
        {
            NSLog(@"Inventory: %@", _InvFeed );
            NSLog(@"Error: %@",err);
        }];

我无法弄清楚这个错误：

  

错误：错误域= JSONModelErrorDomain代码= 1 “无效的JSON数据：   尝试使用initWithDictionary初始化JSONModel对象：错误：   但字典参数不是'NSDictionary'。“
  UserInfo = 0x109075ff0 {NSLocalizedDescription =无效的JSON数据：   尝试使用initWithDictionary初始化JSONModel对象：错误：   但是字典参数不是'NSDictionary'。，   kJSONModelKeyPath = LotDTO}

以下是JSONModel：LotDTO

#import "JSONModel.h"

@interface InvLotModel : JSONModel
@property (assign, nonatomic) int lotid;
@property (strong, nonatomic) NSDate* expdate;
@property (strong, nonatomic) NSString* lotserial;
@property (strong, nonatomic) NSDate* lastupddate;
@property (strong, nonatomic) NSString<Optional>* providerlotserial;
@property (assign, nonatomic) NSDecimal* qtyoriginal;
@property (assign, nonatomic) NSDecimal* qtyallocated;
@property (assign, nonatomic) NSDecimal* qtyavailable;
@property (assign, nonatomic) NSDecimal* qtyonhand;
@property (strong, nonatomic) NSDate* receiptdate;
@property (strong, nonatomic) NSString* linecomment;
@property (assign, nonatomic) NSDecimal* unitcost;
@property (strong, nonatomic) NSString* warehouse;
@end

这里是库存模型

#import "JSONModel.h"
#import "InvLotModel.h"
@protocol InvModel @end
@interface InvModel : JSONModel
@property (assign, nonatomic) int id;
@property (strong, nonatomic) NSString* itemid;
@property (strong, nonatomic) NSString* description;
@property (strong, nonatomic) NSDate* createdate;
@property (strong, nonatomic) NSString* createuser;
@property (assign, nonatomic) float lastcost;
@property (assign, nonatomic) BOOL monitorlevel;
@property (assign, nonatomic) int minlevel;
@property (assign, nonatomic) int maxlevel;
@property (strong, nonatomic) NSString* gtin;
@property (assign, nonatomic) float weight;
@property (strong, nonatomic) NSString* uom;
@property (strong, nonatomic) NSString* sizes;
@property (strong, nonatomic) NSString* variety;
@property (strong, nonatomic) NSString <Optional>* bag;
@property (strong, nonatomic) NSString* style;
@property (strong, nonatomic) NSString* box;
@property (strong, nonatomic) NSString* label;
@property (strong, nonatomic) NSString* commodity;

@property (strong, nonatomic) InvLotModel* LotDTO;
@end

Answer 1

我看到两个问题：

1）在InvModel类中，你将LotDTO定义为单个对象，而不是数组。

2）在您发布的JSON响应中，LotDTO的语法对我来说似乎不是有效的JSON。它似乎是一个LotDTO个对象的数组，但它不遵循JSON数组的语法（您可以检查，例如，here）。

Answer 2

确保将任何扩展属性标记为Ignore。我试图复制模型时遇到了这样的问题。

Answer 3

请替换此

@property (strong, nonatomic) InvLotModel* LotDTO;

用这个

@property (strong, nonatomic) NSArray<InvLotModel,ConvertOnDemand>* LotDTO;

正如JSONModel的官员建议在他们的一个教程中使用ConvertOnDemand将NSArray转换为JSONModelArray以避免实现中的错误。

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