JSON数据解析------Function和JSON-Kit

最新推荐文章于 2025-04-15 18:04:35 发布

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最新推荐文章于 2025-04-15 18:04:35 发布

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本文链接：https://blog.youkuaiyun.com/zhongqing_fzq/article/details/48897827

本文介绍了如何解析JSON数据，包括使用NSJSONSerialization和JSONKit两种方法，并展示了如何将解析后的数据映射到Student对象上，通过设置属性并组装成数组。

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JSON文档有两种结构:对象、数据

对象:以“{”开始，以"}"结束，是名称/值对儿的集合。名称和值之间用":"隔开。

数组:以"["开始,以"]"结束，中间是数据。数据以,隔开。

JSON.txt文件

[
   {
   "name":"安越超",
   "age":20,
   "gender":"male",
   "hobby":"play",
   "phone":"15801002807"
   },
   {
   "name":"曹贺军",
   "age":20,
   "gender":"male",
   "hobby":"sleep",
   "phone":"112332222222"
   },
   {
   "name":"王博南",
   "age":20,
   "gender":"male",
   "hobby":"play",
   "phone":"333333333333"
   },
   {"name":"jdidi",
   "age":20,
   "gender":"male",
   "hobby":"play",
   "phone":"333333333333"
   }
]

数据模型

.h文件
@interface Student : NSObject

//声明属性
@property(nonatomic,copy) NSString *name;

@property(nonatomic,assign) NSInteger age;

@property(nonatomic,copy) NSString *gender;

@property(nonatomic,copy) NSString *hobby;

@property(nonatomic,copy) NSString *phone;

@end

.m文件

#pragma mark------------防止KVC出错
-(void)setValue:(id)value forUndefinedKey:(NSString *)key
{
    //1.防止键用了关键字
    if ([key isEqualToString:@"int"]) {

        _age = [value integerValue];

        //2.防止key值书写错误
        NSLog(@"%@",key);
    }

}

#pragma mark----------debug模式校验对象

-(NSString *)description
{
    return [NSString stringWithFormat:@"name:%@,age:%ld,gender:%@,hobby:%@,phone:%@",_name,_age,_gender,_hobby,_phone];
}

视图控制器的延展部分:
#pragma mark--------声明一个盛放model对象的数组
@property(nonatomic,strong) NSMutableArray *array;

JSON-Function方法解析JSON数据

- (IBAction)JSONAction:(UIButton *)sender {


    //1.获取文件路径

    NSString *path = [[NSBundle mainBundle] pathForResource:@"JSON" ofType:@"txt"];


    //2.根据文件路径创建data对象
    NSData *data = [NSData dataWithContentsOfFile:path];


    //3.解析
    NSArray *array = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];

    //NSLog(@"%@",array);



    //4.组装
    _array = [NSMutableArray arrayWithCapacity:6];

    for (NSDictionary *dict in array) {

        Student *stu = [Student new];

        [stu setValuesForKeysWithDictionary:dict];

        [_array addObject:stu];
    }



    //校验
    for (Student *stu in _array) {
        NSLog(@"%@",stu);
    }

}

JSON-Kit解析方式(要导入JSONKit.h和.m文件)

- (IBAction)jsonWithFSONKitAction:(UIButton *)sender {

    //1.获取文件路径
    NSString *path = [[NSBundle mainBundle] pathForResource:@"JSON" ofType:@"txt"];

    //2.根据文件路径创建data
    NSData *data = [NSData dataWithContentsOfFile:path];


    //3.解析
    NSArray *array = [data objectFromJSONData];


    //4.组装
    _array = [NSMutableArray arrayWithCapacity:6];

    for (NSDictionary *dict in array) {

        Student *stu = [Student new];

        [stu setValuesForKeysWithDictionary:dict];

        [_array addObject:stu];

    }

    //校验
    for (Student *stu in _array) {
        NSLog(@"%@",stu);
    }

}