iOS：通常从NSObject类序列化/反序列化复杂的JSON [英] iOS: Serialize/Deserialize complex JSON generically from NSObject class

问题描述

任何人都知道如何序列化基于NSObject类的嵌套JSON？有一个讨论序列化简单的JSON 这里，但它不是通用的，足以应付复杂的嵌套JSON。

想象一下这是JSON的结果：

  {accounting：[{firstName：John，
lastName：Doe，
age：23}，
 
 {firstName：Mary，
lastName：Smith，
age：32} 
]，
sales：[{firstName ：Sally，
lastName：绿色，
年龄：27}，
 
 {firstName：Jim，
 lastName：Galley，
age：41} 
]} 
  

从这个类中：
$ b $ pre $ @interface Person：NSObject {}
@property（nonatomic，strong）NSString * firstName ;
@property（nonatomic，strong）NSString * lastName;
@property（nonatomic，strong）NSNumber * age;
@end

@interface部门：NSObject {}
@property（nonatomic，strong）NSMutableArray * accounting; //包含Person类
@property（nonatomic，strong）NSMutableArray * sales; //包含Person类
@end


如何基于类一般地序列化/反序列化它们？
$ b 编辑

目前我能够生成像这样的有效载荷在任何类：

  NSMutableDictionary * Payload = [self serialize：objClass]; 
  

但它并不适合嵌套的复杂JSON。任何人都有更好的解决方案？ C＃中的这个库 cater根据对象类序列化/反序列化。我希望根据NSObject重现相同的内容。

解决方案

最后，我们可以使用JSONModel 。这是迄今为止最好的方法。 JSONModel是一个通用的基于Class序列化/反序列化对象的库。你甚至可以使用基于non-nsobject的属性，如 int ， short 和 float 。它也可以提供嵌套复杂的JSON。



1）反序列化示例。通过引用上面的例子，在头文件中：



  #importJSONModel.h
 
 @接口Person：JSONModel 
 @property（非原子，强壮）NSString * firstName; 
 @property（nonatomic，strong）NSString * lastName; 
 @property（nonatomic，strong）NSNumber * age; 
 @end 
 
 @protocol Person; 
 
 @interface部门：JSONModel 
 @property（nonatomic，strong）NSMutableArray< Person> *会计; 
 @property（nonatomic，strong）NSMutableArray< Person> *销售; 
 @end 
  

在执行文件中：

  #importJSONModelLib.h
 #importmyJSONClass.h
 
 NSString * responseJSON = / * from example * /; 
 Department * department = [[Department alloc] initWithString：responseJSON error：& err]; （@％@，person.firstName）; 
 if 
 NSLog（@％@，person.lastName）; 
 NSLog（@％@，person.age）; 
 
 
（Person @ person in department.sales）{
 
 NSLog（@％@，person.firstName）; 
 NSLog（@％@，person.lastName）; 
 NSLog（@％@，person.age）; 
 
 
 $ c 
 
 
 
  2）序列化示例 。在执行文件中： 
 
 
  #importJSONModelLib.h
 #importmyJSONClass.h
 
 Department * department = [[Department alloc] init]; 
 
 Person * personAcc1 = [[Person alloc] init]; 
 personAcc1.firstName = @Uee; 
 personAcc1.lastName = @Bae; 
 personAcc1.age = [NSNumber numberWithInt：22]; 
 [department.accounting addOject：personAcc1]; 
 
 Person * personSales1 = [[Person alloc] init]; 
 personSales1.firstName = @Sara; 
 personSales1.lastName = @Jung; 
 personSales1.age = [NSNumber numberWithInt：20]; 
 [department.sales addOject：personSales1]; 
 
 NSLog（@％@，[department toJSONString]）; 
  
这就是Serialize示例中的NSLog结果： 
 
 
  {accounting：[{firstName：Uee，
lastName：Bae，
age：22} 
]，
sales：[{firstName：Sara，
lastName：Jung，
age：20} 
] } 
  
 
Anyone have  idea how to serialize nested JSON based on NSObject class? There is a discussion to serialize simple JSON here , but it is not generic enough to cater complex nested JSON.


Imagine this is the result of JSON:
{ "accounting" : [{ "firstName" : "John",  
                    "lastName"  : "Doe",
                    "age"       : 23 },

                  { "firstName" : "Mary",  
                    "lastName"  : "Smith",
                    "age"       : 32 }
                              ],                            
  "sales"      : [{ "firstName" : "Sally", 
                    "lastName"  : "Green",
                    "age"       : 27 },

                  { "firstName" : "Jim",   
                    "lastName"  : "Galley",
                    "age"       : 41 }
                  ]}
From this class:
@interface Person : NSObject{}
@property (nonatomic, strong) NSString *firstName;
@property (nonatomic, strong) NSString *lastName;
@property (nonatomic, strong) NSNumber *age;
@end

@interface Department : NSObject{}
@property (nonatomic, strong) NSMutableArray *accounting; //contain Person class
@property (nonatomic, strong) NSMutableArray *sales; //contain Person class
@end
How to  serialize/deserialize them based on class generically?

EDIT

Currently i'm able to generate payload  like this based on any class:
NSMutableDictionary *Payload = [self serialize:objClass];
But it does not cater  nested complex JSON. Anyone have better solution for this? This library for C# cater serialize/deserialze based on object class. I want to reproduce something the same based on NSObject
解决方案
Finally we can solve this problem easily using JSONModel. This is the best method so far. JSONModel is a library that generically serialize/deserialize your object based on Class. You can even use non-nsobject based for property like int, short and float. It can also cater nested-complex JSON.

1) Deserialize example. By referring to above example, in header file:
#import "JSONModel.h"

@interface Person : JSONModel 
@property (nonatomic, strong) NSString *firstName;
@property (nonatomic, strong) NSString *lastName;
@property (nonatomic, strong) NSNumber *age;
@end

@protocol Person;

@interface Department : JSONModel
@property (nonatomic, strong) NSMutableArray<Person> *accounting;
@property (nonatomic, strong) NSMutableArray<Person> *sales;
@end
in implementation file:
#import "JSONModelLib.h"
#import "myJSONClass.h"

NSString *responseJSON = /*from example*/;
Department *department = [[Department alloc] initWithString:responseJSON error:&err];
if (!err)
{
    for (Person *person in department.accounting) {

        NSLog(@"%@", person.firstName);
        NSLog(@"%@", person.lastName);
        NSLog(@"%@", person.age);         
    }

    for (Person *person in department.sales) {

        NSLog(@"%@", person.firstName);
        NSLog(@"%@", person.lastName);
        NSLog(@"%@", person.age);         
    }
}
2) Serialize Example. In implementation file:
#import "JSONModelLib.h"
#import "myJSONClass.h"

Department *department = [[Department alloc] init];

Person *personAcc1 = [[Person alloc] init];
personAcc1.firstName = @"Uee";
personAcc1.lastName = @"Bae";
personAcc1.age = [NSNumber numberWithInt:22];
[department.accounting addOject:personAcc1];

Person *personSales1 = [[Person alloc] init];
personSales1.firstName = @"Sara";
personSales1.lastName = @"Jung";
personSales1.age = [NSNumber numberWithInt:20];
[department.sales addOject:personSales1];

NSLog(@"%@", [department toJSONString]);
And this is NSLog result from Serialize example: 
{ "accounting" : [{ "firstName" : "Uee",  
                    "lastName"  : "Bae",
                    "age"       : 22 }
                 ],                            
  "sales"      : [{ "firstName" : "Sara", 
                    "lastName"  : "Jung",
                    "age"       : 20 }
                  ]}


                        
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