ios-webview登录

Posted on

ios webview登录最重要的就是将登陆之后的cookie存起来
在ios12之前我们登录都能正常从- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler方法中取到response之后，直接处理成cookie存起来
但是ios12开始 此方法登录就取不到response里最重要的set-cookie的值 我们就只能在h5那边登录之后的页面取到cookie经过字符串处理 将他们存起来

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
-(void)loginSuccess:(NSHTTPURLResponse*)response orWithCookie:(NSString*)cookie{
    //清除之前的coockie
        NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
        NSArray *_tmpArray = [NSArray arrayWithArray:[cookieJar cookies]];
        for (id obj in _tmpArray) {
            [cookieJar deleteCookie:obj];
        }
        // 删除NSUserDefault里面的值
        NSUserDefaults *defatluts = [NSUserDefaults standardUserDefaults];
        NSDictionary *dictionary = [defatluts dictionaryRepresentation];
        for(NSString *key in [dictionary allKeys]){
            if([key isEqualToString:@"cookie"]){
                [defatluts removeObjectForKey:key];
            }
            [defatluts synchronize];
        }
    //读取wkwebview中的cookie 方法
    NSArray *cookies =[NSHTTPCookie cookiesWithResponseHeaderFields:[response allHeaderFields] forURL: response.URL];
    if (cookies.count <= 0){
        NSString *b =[[self achieveStringWithRootString:cookie key:@"_ResumeHack_session"] stringByAppendingString:@" path=/; HttpOnly, "];
         NSMutableArray* mcookies =  [cookies mutableCopy];
        [mcookies addObject:[b cookie]];
         cookies = [NSArray arrayWithArray:mcookies];
    }
    
    for (NSHTTPCookie *cookie in cookies) {
            //将 cookie 存进NSHTTPCookieStorage
            [[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:cookie];
        }
        //把cookie存到NUserDefault里面
        NSData *cookiesData = [NSKeyedArchiver archivedDataWithRootObject: [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]];
        NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
        [defaults setObject: cookiesData forKey: @"cookie"];
        [defaults synchronize];
        NSLog(@"userdefault中的cookie%@",[defaults objectForKey:@"cookie"]);
    
        //看看存入到了NSHTTPCookieStorage了没有
        NSHTTPCookieStorage *cookieJar2 = [NSHTTPCookieStorage sharedHTTPCookieStorage];
        for (NSHTTPCookie *cookie in cookieJar2.cookies) {
            NSLog(@"NSHTTPCookieStorage中的cookie%@", cookie);
        }

    [self dismissViewControllerAnimated:YES completion:^{
        _loginComplete();
    }];
    [Loading hide];
}

字符串处理cookie

1
2
3
4
5
6
7
8
- (NSString *)achieveStringWithRootString:(NSString *)rootString key:(NSString *)key{
    NSRange aRange = [rootString rangeOfString:[NSString stringWithFormat:@"%@=",key]];
    NSString *c = [rootString substringFromIndex:aRange.location];
    NSLog(@"c===============%@", c);
    NSRange bRange = [c rangeOfString:@";"];//匹配得到的下标
    NSString *d = [c substringToIndex:bRange.location + bRange.length];
    return d;
}

ps:在登录、登出中清除cookie跟userdefault中的值的时候要避免清除其他有用的值 否则会导致userdefault值的丢失 造成很奇怪的bug