带有来自 WebService 的会话 ID 的 IOS 登录 JSON 解析器

Posted 2023-03-16

【中文标题】带有来自 WebService 的会话 ID 的 IOS 登录 JSON 解析器

【英文标题】：IOS Login JSON parser with session Id from WebService

【发布时间】：2014-11-14 09:21:28

【问题描述】：

您好，我是 ios 开发新手。我正在开发一个从 web 服务中提取数据的应用程序。它具有登录和注销会话以及我打算使用 RestKit 实现的大量 JSON API 调用。

现在的问题是我的登录工作正常并获得成功代码 200 但无法转到下一个视图控制器场景，因为。我不知道如何获取 sessionId。

这是我的代码和 JSON；

  "details": 
    "username": "MY USER NAME",
"password": "MY MD5 CONVERTED PASS" 



Expected Returned JSON syntax (Success)


  "response": 
"code": 200,
"resp_code": "USER_SESSION_LOGGED_IN", "sid": "as4ads68ds468486essf879g8de9sdg", "session_info": 
"details": 
"firstname" : "MY NAME",
"email_address" : "MY EMAIL", "company_id" : 1,
"user_id" : 1,
"surname" : "MY SURNAME",
"cell_number" : "MY NUMBER",
"username" : "MY USERNAME"
 
 
//
//  ViewController.m
//
//  Created by Cockpit Alien on 2014/10/27.
//  Copyright (c) 2014 CockpitAlien. All rights reserved.
//

#import "ViewController.h"
#import <CommonCrypto/CommonDigest.h>

@interface ViewController ()

@end

@implementation ViewController

- (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.


/*+ (NSString*)md5HexDigest:(NSString*)input

    const char* str = [input UTF8String];
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5(str, strlen(str), result);
    
    NSMutableString *ret = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH*2];
    for(int i = 0; i<CC_MD5_DIGEST_LENGTH; i++) 
        [ret appendFormat:@"%02x",result[i]];
    
    return ret;
*/

- (NSString *) md5:(NSString *) input

    const char *cStr = [input UTF8String];
    unsigned char digest[16];
    CC_MD5( cStr, strlen(cStr), digest ); // This is the md5 call
    
    NSMutableString *output = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH * 2];
    
    for(int i = 0; i < CC_MD5_DIGEST_LENGTH; i++)
        [output appendFormat:@"%02x", digest[i]];
    
    return  output;
    


- (IBAction)signinClicked:(id)sender 
    NSInteger success = 0;
    NSString *username = self.txtUsername.text;
    NSString *password = self.txtPassword.text;
    NSString *md5Password = [self md5:password];
    
    @try 
        
        if([username isEqualToString:@""] || [password isEqualToString:@""] ) 
            [self alertStatus:@"Please enter Email and Password" :@"Sign in Failed!" :0];
            
         else 
            NSString *post = [[NSString alloc] initWithFormat:@"username=%@&password=%@",username,md5Password];
            NSLog(@"PostData: %@",post);
            // Create the request
            NSURL *url=[NSURL URLWithString:@"MY JSON HTTP/S URL HERE"];
            
            NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
            
            NSString *postLength = [NSString stringWithFormat:@"%lu",(unsigned long)[postData length]];
            
            
            NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
            NSLog(@"Request Mutable, %@", request);
            [request setURL:url];
            [request setHTTPMethod:@"POST"];
            [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
            [request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
            [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
            [request setHTTPBody:postData];
            
            //[NSURLRequest setAllowsAnyHTTPSCertificate:YES forHost:[url host]];
            
            NSError *error = [[NSError alloc] init];
            NSHTTPURLResponse *response = nil;
            
            // Create url connetion and fire requests
            NSData *urlData=[NSURLConnection sendSynchronousRequest:request
                                                  returningResponse:&response
                                                              error:&error];
            
            NSLog(@"Response code: %ld", (long)[response statusCode]);
            
            if ([response statusCode] >= 200 && [response statusCode] < 300)
            
                NSString *responseData = [[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
                NSLog(@"Response ==> %@", responseData);
                
                NSError *error = nil;
                NSDictionary *jsonData = [NSJSONSerialization
                                          JSONObjectWithData:urlData
                                          options:NSJSONReadingMutableContainers
                                          error:&error];
                
                success = [jsonData[@"success"] integerValue];
                NSLog(@"Success: %ld",(long)success);
                
                if(success == 1)
                
                    NSLog(@"Login SUCCESS");
                 else 
                    
                    NSString *error_msg = (NSString *) jsonData[@"error_message"];
                    [self alertStatus:error_msg :@"Sign in Failed!" :0];
                    NSLog(@"Loging failed");
                
                
             else 
                //if (error) NSLog(@"Error: %@", error);
                [self alertStatus:@"Connection Failed" :@"Sign in Failed!" :0];
            
        
    
    @catch (NSException * e) 
        NSLog(@"Exception: %@", e);
        [self alertStatus:@"Sign in Failed." :@"Error!" :0];
    
    if (success) 
        [self performSegueWithIdentifier:@"login_success" sender:self];
    


- (void) alertStatus:(NSString *)msg :(NSString *)title :(int) tag

    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:title
                                                        message:msg
                                                       delegate:self
                                              cancelButtonTitle:@"Ok"
                                              otherButtonTitles:nil, nil];
    alertView.tag = tag;
    [alertView show];

@end


//
//  ViewController.h
//      
//  Created by CockPit on 2014/10/27.
//  Copyright (c) 2014 CockpitAliens. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property (weak, nonatomic) IBOutlet UITextField *txtUsername;
@property (weak, nonatomic) IBOutlet UITextField *txtPassword;
- (IBAction)signinClicked:(id)sender;

@end

这是我的故事板。我希望能够登录并转到下一个视图控制器。因为我还必须注销解析此 JSON 的 sessionId。

【问题讨论】：

NSLog(@"Response ==> %@", responseData); 告诉你什么

我将发布我现在得到的响应数据

发布数据：username=cockpit&password=vsgsvah24bsbsbs5tbsb

那是你的post数据，我们需要查看响应数据

检查segue Identifier是否正确，应该和xib一样

【参考方案1】：

在你的signinClicked 方法中，

- (IBAction)signinClicked:(id)sender 

   ....
   ....

   if ([response statusCode] >= 200 && [response statusCode] < 300)
   
   ....
   ....
    if(success == 1)
    
       NSLog(@"Login SUCCESS");
    
   ....
   ....
   

   ....
   ....

所以你除了打印 NSLog 之外什么也没做。您正在检查 statusCode 是否成功以及检查 success 变量值。在这种情况下，您应该需要可执行代码或方法调用，这将推动应用程序进一步执行。

【讨论】：

是的，如果（成功 == 1）我相信你是对的，我相信应该有一个代码来操作在这种情况下下一步该做什么。请帮忙

if(success == 1) NSLog(@"登录成功"); [self performSegueWithIdentifier:@“登录成功”发件人：self]; 其他

如果我添加此代码仍然无法让视图控制器进入登录成功屏幕

那么你的故事板segue连接一定有问题。尝试删除您当前的连接并添加具有不同标识符名称的新连接。

这就是响应。除非我不明白你的意思。