IOS开发 JSON 数据转化成 Arrays 或者 Dictionaries

来源：互联网发布：php tp框架分页编辑：程序博客网时间：2024/06/05 10:26

转自：http://blog.csdn.net/developer_zhang/article/details/8921677

通过将字典或者数组转化成json数据，然后打印出来

#import "TestDemo.h"@implementation TestDemo-(void)convseFromJson{        //字典    NSMutableDictionary *dictionary = [[NSMutableDictionary alloc] init];    [dictionary setValue:@"Anthony" forKey:@"First Name"];    [dictionary setValue:@"Robbins" forKey:@"Last Name"];    [dictionary setValue:[NSNumber numberWithUnsignedInteger:51] forKey:@"Age"];    NSArray *arrayOfAnthonysChildren = [[NSArray alloc] initWithObjects:                                        @"Anthony's Son 1",                                        @"Anthony's Daughter 1",                                        @"Anthony's Son 2",                                        @"Anthony's Son 3",                                        @"Anthony's Daughter 2", nil];    [dictionary setValue:arrayOfAnthonysChildren forKey:@"children"];//数组//    NSMutableArray *dictionary = [NSMutableArray arrayWithObjects:@"sww",@"123",@"chjt",@"hund",@"syn", nil];        NSError *error = nil;    NSData *jsonData = [NSJSONSerialization                        dataWithJSONObject:dictionary options:NSJSONWritingPrettyPrinted error:&error];    if ([jsonData length] > 0 && error == nil){        NSLog(@"Successfully serialized the dictionary into data.");        /* Json转数组/字典 */        error = nil;        //转换方法        id jsonObject = [NSJSONSerialization                         JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments                         error:&error];        if (jsonObject != nil && error == nil){            NSLog(@"Successfully deserialized...");            //如果jsonObject是字典类            if ([jsonObject isKindOfClass:[NSDictionary class]]){                NSDictionary *deserializedDictionary = (NSDictionary *)jsonObject;                NSLog(@"Dersialized JSON Dictionary = %@", deserializedDictionary);            }            //如果jsonObject是数组类            else if ([jsonObject isKindOfClass:[NSArray class]]){                NSArray *deserializedArray = (NSArray *)jsonObject;                NSLog(@"Dersialized JSON Array = %@", deserializedArray);            } else {                NSLog(@"I can't deal with it");            }        }        else if (error != nil){            NSLog(@"An error happened while deserializing the JSON data."); }    }    else if ([jsonData length] == 0 &&error == nil){        NSLog(@"No data was returned after serialization.");    }    else if (error != nil){        NSLog(@"An error happened = %@", error);    }}@end

输出打印结果：

1.json数据是字典

2015-08-02 16:02:16.046 FromJsonTest[1478:188561] Dersialized JSON Dictionary = {

Age = 51;

"First Name" = Anthony;

"Last Name" = Robbins;

children = (

"Anthony's Son 1",

"Anthony's Daughter 1",

"Anthony's Son 2",

"Anthony's Son 3",

"Anthony's Daughter 2"

);

}

2. json数据是数组

2015-08-02 16:08:47.193 FromJsonTest[1494:194307] Dersialized JSON Array = (

sww,

123,

chjt,

hund,

syn

)

从打印出的数据可以看出字典一般以｛｝结尾，而数组一般以（）结尾。

demo下载地址：点击打开链接

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