Question

我想用entityset

创建json对象

{
    "$id": "1",
    "EntitySet": [
        {
            "$id": "2",
            "id": 1,
            "title1": "Mr"
        },
        {
            "$id": "3",
            "id": 2,
            "title1": "Ms"
        },
        {
            "$id": "4",
            "id": 3,
            "title1": "Dr"
        },
        {
            "$id": "5",
            "id": 4,
            "title1": "Mrs"
        },
        {
            "$id": "6",
            "id": 5,
            "title1": "N/A"
        },
        {
            "$id": "7",
            "id": 6,
            "title1": "Other"
        }
    ],
    "OperationStatus": true,
    "OperationMessage": "Records Available",
    "RowsEffected": 0
}

使用create new class存储到数组中？有可能..？

Answer 1

我认为你的JSON应该是这个......

{
    "$id": "1",
    "EntitySet": [
        {
            "$id": "2",
            "id": 1,
            "title1": "Mr"
        },
        {
            "$id": "3",
            "id": 2,
            "title1": "Ms"
        },
        {
            "$id": "4",
            "id": 3,
            "title1": "Dr"
        },
        {
            "$id": "5",
            "id": 4,
            "title1": "Mrs"
        },
        {
            "$id": "6",
            "id": 5,
            "title1": "N/A"
        },
        {
            "$id": "7",
            "id": 6,
            "title1": "Other"
        }
    ],
    "OperationStatus": true,
    "OperationMessage": "Records Available",
    "RowsEffected": 0
}

在顶层，这是一个字典，其中一个键“EntitySet”指向一个数组。

把它变成一个对象......

NSDictionary *jsonDictionary = [NSJSONSerialization JSONObjectWithData:theJSONData options:0 error:nil];

此jsonDictionary将具有1个键/值对，其中键为“EntitySet”，值为字典数组。

修改

更新JSON之后，唯一改变的是字典将具有多个键/值对。

但其他一切都是一样的。

编辑2

然后，您可以将其保存到一个看起来像这样的新类......

@interface MyModelClass : NSObject @property NSString *id; @property NSArray *entities; @property (nonatomic, assign) BOOL operationStatus; @property NSString *operationMessage; @property NSNumber *rowsEffected; - (id)initWithDictionary:(NSDictionary *)dictionary; @end

然后实现看起来像......

#import "MyModelClass.h" @implementation MyModelClass - (id)initWithDictionary:(NSDictionary *)dictionary { self = [super init]; if (self) { self.id = dictionary[@"$id"]; self.entities = dictionary[@"EntitySet"]; // and so on... } return self; } @end

然后，当您在上面创建jsonDictionary时，您可以获得类似......
的课程
MyModelClass *myObject = [[MyModelClass alloc] initWithDictionary:jsonDictionary];

Answer 2

您可以从解析的NSDictory json数据生成Api。

//JsonModel.h Start
#import <Foundation/Foundation.h>

@class ModelEntitySet;

@interface Api : NSObject

@property(nonatomic,retain) NSString * id;
@property(nonatomic,retain) NSMutableArray * EntitySet;
@property(nonatomic,retain) NSString * OperationStatus;
@property(nonatomic,retain) NSString * OperationMessage;
@property(nonatomic,retain) NSNumber * RowsEffected;

+ (id) objectWithDictionary:(NSDictionary*)dictionary;
- (id) initWithDictionary:(NSDictionary*)dictionary;

@end


@interface ModelEntitySet : NSObject

@property(nonatomic,retain) NSString * Sid;
@property(nonatomic,retain) NSNumber * Id;
@property(nonatomic,retain) NSString * Title1;

+ (id) objectWithDictionary:(NSDictionary*)dictionary;
- (id) initWithDictionary:(NSDictionary*)dictionary;

@end

//JsonModel.h End


// JsonModel.m Start

#import "JsonModel.h"



@implementation Api

@synthesize id;
@synthesize EntitySet;
@synthesize OperationStatus;
@synthesize OperationMessage;
@synthesize RowsEffected;


+ (id) objectWithDictionary:(NSDictionary*)dictionary
{
    id obj = [[Api alloc] initWithDictionary:dictionary];
    return obj;
}

- (id) initWithDictionary:(NSDictionary*)dictionary
{
    self=[super init];
    if(self)
    {
        id = [dictionary objectForKey:@"$id"];

        NSArray* temp =  [dictionary objectForKey:@"EntitySet"];
        EntitySet =  [[NSMutableArray alloc] init];
        for (NSDictionary *d in temp) {
            [EntitySet addObject:[ModelEntitySet objectWithDictionary:d]];
        }
        OperationStatus = [dictionary objectForKey:@"OperationStatus"];
        OperationMessage = [dictionary objectForKey:@"OperationMessage"];
        RowsEffected = [dictionary objectForKey:@"RowsEffected"];
    }
    return self;
}


@end


@implementation ModelEntitySet

@synthesize Sid;
@synthesize Id;
@synthesize Title1;


+ (id) objectWithDictionary:(NSDictionary*)dictionary
{
    id obj = [[[ModelEntitySet alloc] initWithDictionary:dictionary] autorelease];
    return obj;
}

- (id) initWithDictionary:(NSDictionary*)dictionary
{
    self=[super init];
    if(self)
    {
        Sid = [dictionary objectForKey:@"$id"];
        Id = [dictionary objectForKey:@"Id"];
        Title1 = [dictionary objectForKey:@"Title1"];
    }
    return self;
}


@end

//JsonModel.m End

用json对象解析url

2 个答案: