【代码笔记】iOS-NSJSONSerializationDemo

一，代码。

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
 self.title=@"NSJSONSerialization"; [self initJson]; } -(void)initJson { NSDictionary* jsonDic = [NSDictionary dictionaryWithObjectsAndKeys:@"李小华",@"name",@"女",@"sex",@"23",@"age",@"BeiJing",@"from",nil]; NSLog(@"-------------jsonDic--%@",jsonDic); //将Dic转为NSData NSData *jsonData = [NSJSONSerialization dataWithJSONObject:jsonDic options:NSJSONWritingPrettyPrinted error:nil]; //将NSData转为字符串 NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding]; NSLog(@"--jsonString--%@",jsonString); NSLog(@"--jsonData---%@",jsonData); }

 

二，输出。

2015-10-22 15:04:05.112 NSJSONSerializationDemo[13058:272541] -------------jsonDic--{ age = 23; from = BeiJing; name = "\U674e\U5c0f\U534e"; sex = "\U5973"; } 2015-10-22 15:04:05.113 NSJSONSerializationDemo[13058:272541] --jsonString--{ "age" : "23", "sex" : "女", "name" : "李小华", "from" : "BeiJing" } 2015-10-22 15:04:05.113 NSJSONSerializationDemo[13058:272541] --jsonData---<7b0a2020 22616765 22203a20 22323322 2c0a2020 22736578 22203a20 22e5a5b3 222c0a20 20226e61 6d652220 3a2022e6 9d8ee5b0 8fe58d8e 222c0a20 20226672 6f6d2220 3a202242 65694a69 6e67220a 7d>