iOS json解析 和生成json串

1.生成json字符串

        NSData * jsonData = [NSJSONSerialization dataWithJSONObject:detailDic options:0 error:nil];
        NSString * myString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
        

2.json解析

 NSDictionary * selectSimpleTest = [NSJSONSerialization JSONObjectWithData:[tizhiSimpleTest.detail dataUsingEncoding:NSUTF8StringEncoding] options:0 error:nil];

官方提供的JSON解析