• iOS webView、WKWebView、AFNetworking 中的cookie存取


    当前一些公司为了快速出一款app,很多时候采用UINavigationController+WebView或者NavigationController+UITabbarVC+WebView的方式,这样就不可避免的需要使用cookie与Html5交互,下面讲述几种常用情景下cookie的添加方法:

    一. UIWebView:

    // 工厂类中存储cookie的方法
    + (void)saveCookies {
        // 创建一个可变字典存放cookie
        NSMutableDictionary *fromappDict = [NSMutableDictionary dictionary];
        [fromappDict setObject:@"fromapp" forKey:NSHTTPCookieName];
        [fromappDict setObject:@"ios" forKey:NSHTTPCookieValue];
        // kDomain是公司app网址
        [fromappDict setObject:kDomain forKey:NSHTTPCookieDomain];
        [fromappDict setObject:kDomain forKey:NSHTTPCookieOriginURL];
        [fromappDict setObject:@"/" forKey:NSHTTPCookiePath];
        [fromappDict setObject:@"0" forKey:NSHTTPCookieVersion];
    
        // 将可变字典转化为cookie
        NSHTTPCookie *cookie = [NSHTTPCookie cookieWithProperties:params];
    
        // 获取cookieStorage
        NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage]
    
        // 存储cookie
        [cookieStorage setCookie:cookie];
    }
    • UIWebView使用时间较长,只要在cookieStorage中设置了相应的cookie,每次就会自动带上;
    • 但是这样的弊端是随着与H5的交互增加,Cookie占用的空间越来越大,每次交互都夹带大量的cookie,不仅增加服务器端压力,也浪费用户的流量。比如每次交互都夹带5kb的cookie内容,但是真正用到的只有两三百字节。

    二. WKWebView

    • WKWebView相比于UIWebView:

      • 速度快了一倍,内存却减少为原来的一半;
      • cookie不再是自动携带,需要手动设置;
      • 交互更加顺畅,比如app底部四个tabBar也都是网页的,在UIWebView下点击,整个H5页面都会闪白一下,但是在WKWebView下点击,四个tabBar效果与原生app效果更加类似,不会有闪白现象。
      • 增减了一些代理方法,更方便的进行协议拦截和进度条展示
    • 1.在创建的时候存放到WKUserScript中进行添加cookie

        WKWebViewConfiguration *webConfig = [[WKWebViewConfiguration alloc] init];
        // 设置偏好设置
        webConfig.preferences = [[WKPreferences alloc] init];
        // 默认为0
        webConfig.preferences.minimumFontSize = 10;
        // 默认认为YES
        webConfig.preferences.javaScriptEnabled = YES;
        // 在iOS上默认为NO,表示不能自动通过窗口打开
        webConfig.preferences.javaScriptCanOpenWindowsAutomatically = NO;
    
        // web内容处理池
        webConfig.processPool = [[WKProcessPool alloc] init];
        // 将所有cookie以document.cookie = 'key=value';形式进行拼接
        #warning 然而这里的单引号一定要注意是英文的,不要问我为什么告诉你这个(手动微笑)
        NSString *cookieValue = @"document.cookie = 'fromapp=ios';document.cookie = 'channel=appstore';";
    
        // 加cookie给h5识别,表明在ios端打开该地址
        WKUserContentController* userContentController = WKUserContentController.new;
        WKUserScript * cookieScript = [[WKUserScript alloc]
                                       initWithSource: cookieValue
                                       injectionTime:WKUserScriptInjectionTimeAtDocumentStart forMainFrameOnly:NO];
        [userContentController addUserScript:cookieScript];
        webConfig.userContentController = userContentController;
    
        WKWebView *wkWebView = [[WKWebView alloc] initWithFrame:frame configuration:webConfig];
    
        wkWebView.UIDelegate = wkWebView;
        wkWebView.navigationDelegate = wkWebView;
    • 2.加载某个url的时候添加cookie

      如果WKWebView在加载url的时候需要添加cookie,需要先手动获取当前NSHTTPCookieStorage中的所有cookie,然后将cookie放到NSMutableURLRequest请求头中

    - (void)loadRequestWithUrlString:(NSString *)urlString {
    
        // 在此处获取返回的cookie
        NSMutableDictionary *cookieDic = [NSMutableDictionary dictionary];
    
        NSMutableString *cookieValue = [NSMutableString stringWithFormat:@""];
        NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
    
        for (NSHTTPCookie *cookie in [cookieJar cookies]) {
            [cookieDic setObject:cookie.value forKey:cookie.name];
        }
    
        // cookie重复,先放到字典进行去重,再进行拼接
        for (NSString *key in cookieDic) {
            NSString *appendString = [NSString stringWithFormat:@"%@=%@;", key, [cookieDic valueForKey:key]];
            [cookieValue appendString:appendString];
        }
    
        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString]];
        [request addValue:cookieValue forHTTPHeaderField:@"Cookie"];
    
        [self loadRequest:request];
    }

    3.AFNetworking

    AFNetworking存取cookie就比较常见了,话不多说,都在代码里了 

        // 获取AFHTTPRequestOperationManager
        AFHTTPRequestOperationManager *operationManager = [AFHTTPRequestOperationManager manager];
    
        // 创建可变字典用于存放Cookie
        NSMutableDictionary *cookieDic = [NSMutableDictionary dictionary];
    
        // 存放新添加的cookie
        #warning 单个的Cookie还好,但是楼主在工厂类方法中拼接了一个包含6个设备信息的value值,最后忘记加分号了,测试也没测出来
        #warning 因为不影响功能,但是后面的cookie就自动拼接上了,H5那边也识别不到,险造成重大事故(涉及金融。。),望后来者看到,提前做好准备(就凭这个坑,你得给我个赞)
        NSMutableString *cookieValue = [NSMutableString stringWithFormat:@"fromapp=ios;"];
    
        // 获取
        NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
    
        for (NSHTTPCookie *cookie in [cookieJar cookies]) {
            [cookieDic setObject:cookie.value forKey:cookie.name];
        }
    
        // cookie重复,先放到字典去重,再进行拼接
        for (NSString *key in cookieDic) {
            NSString *appendString = [NSString stringWithFormat:@"%@=%@;", key, [cookieDic valueForKey:key]];
            [cookieValue appendString:appendString];
        }
    
        // 将cookie存到请求头中
        [operationManager.requestSerializer setValue:cookieValue forHTTPHeaderField:@"Cookie"];
    
        //  拼接url地址
        NSString *urlStr = [NSString stringWithFormat:@"%@%@", kHostIP, kPath];
    
        // 设置参数字典
        NSDictionary *paraDict = @{
                                      @"key" : value
                                      };
        // 发送请求,处理结果
        [operationManager POST:urlStr parameters:paraDict success:^(AFHTTPRequestOperation * _Nonnull operation, id  _Nonnull responseObject) {
    
             NSLog(@"responseObject-->%@", responseObject);
    
        } failure:^(AFHTTPRequestOperation * _Nullable operation, NSError * _Nonnull error) {
    
             NSLog(@"error-->%@", error);
        }];



    转载:http://www.jianshu.com/p/d2c478bbcca5
  • 相关阅读:
    概率面试题
    机器学习概率题总结(转载)
    筛素数以及判断数是否是素数
    腾讯2019正式批春笔试题
    推荐系统架构
    文本表示与匹配
    CTR预估经典模型总结
    spark运行原理
    leetcode 字符串动态规划总结
    无向图的邻接矩阵创建代码以及深度遍历广度遍历
  • 原文地址:https://www.cnblogs.com/LoveStoryJX/p/6548145.html
Copyright © 2020-2023  润新知