josn数据的解析呀呀呀。

Question

简单地说就是我做的一个登录验证从网站返回的数据，我现在要把数据解析出来但是我不会呀。.h文件为#import
#import "JSONKit.h"
@interface ViewController : UIViewController

@property (weak, nonatomic) IBOutlet UITextField *username;

@property (weak, nonatomic) IBOutlet UITextField *pwd;

• (IBAction)signin:(id)sender;

@end

.m文件为
#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

-(BOOL)textFieldShouldReturn:(UITextField*)textField{

[textField resignFirstResponder];
return YES;

}

• (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib.

}

• (void)didReceiveMemoryWarning {
  [super didReceiveMemoryWarning];
  // Dispose of any resources that can be recreated.
  }

• (IBAction)signin:(id)sender {

  NSString*username=self.username.text;
  NSString*pwd=self.pwd.text;
  NSString *str =[NSString stringWithFormat:@"ActionCode=0x2001&parameter=pwd###%@#####userNo###%@&LoginID=&LoginIp=",pwd,username];//设置参数

  NSString *encodedValue = [str stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

  NSString*str2=[NSString stringWithFormat:@"http://14.17.84.128:8088/wcf/ActionService.svc/action/web/get/do?%@",encodedValue];

  NSURL*url=[NSURL URLWithString:str2];

  NSURLRequest *request = [[NSURLRequest alloc]initWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10];

  //NSURLRequest初始化方法第一个参数：请求访问路径，第二个参数：缓存协议，第三个参数：网络请求超时时间（秒）

  //第三步，连接服务器

  NSData *received = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];

  NSString *str3 = [[NSString alloc]initWithData:received encoding:NSUTF8StringEncoding];

  // NSLog(@"%@",str2);

  NSLog(@"%@",str3);

  }

@end接受到的数据为2015-08-10 21:36:37.038 百汇百通[626:6884] {"ErrorCode":0,"Exception":null,"IsCompleted":true,"Result":"{\"CompanyCode\":\"100000\",\"CompanyID\":\"1\",\"CompanyName\":\"百汇百通位置服务平台\",\"DataRights\":\"ALL\",\"GprsPort\":\"\",\"GpsDeviceNo\":\"\",\"GpsDeviceType\":\"\",\"LicensePlate\":\"\",\"Privileges\":\"ALL\",\"Result\":\"0\",\"RoleID\":\"1\",\"RoleName\":\"系统管理员\",\"SimcardNo\":\"\",\"UserName\":\"超级管理员\",\"UserType\":\"1\",\"VehicleID\":\"\"}"}大神告诉我如何解析并提取键值呀。

Answer 1

NSDictionary *dict=[NSJSONSerialization JSONObjectWithData: received options:NSJSONReadingMutableLeaves error:nil];

recieved 为你接收到的NSData类型。

通过dict[@"ErrorCode"],dict[@"IsCompleted"]等来提取；

我发现 键 result对应好像还是一个JSON数据，所以要再次解析出来

NSDictionary *res=dict[@"Result"];
然后再取Result里的键值。比如：
NSString *company_code =res[@"CompanyCode"];
NSString *company_name=res[@"CompanyName"];

你先试试吧，不行的话你再找我。