Question

我正在尝试在我的iPhone App中创建登录。

NSURL *urlNew = [NSURL URLWithString:urlstring];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:urlNew];
NSString *msgLength = [NSString stringWithFormat:@"%d", [parameterString length]];
[theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];
[theRequest setHTTPMethod:@"POST"];
[theRequest setValue:length forHTTPHeaderField:@"Content-Length"];
[theRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[theRequest setHTTPBody: httpbody];

NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self startImmediately:YES];

[connection start];

这就是我将数据发布到服务器的方式，它有效 - 我得到了回复。问题是，响应是登录端的代码，而不是“已保存”区域的代码。我想我必须创建cookie，以便网站知道我已登录。

我搜索了互联网，但没有找到任何有用的东西。那么当我登录时，如何创建cookie？当我要去“已保存”区域中的另一个链接时，我是否每次都要发布此cookie？

希望你能解决我的问题。

格尔茨

Answer 1

试试这个

[theRequest setValue:@"myCookie" forHTTPHeaderField:@"Cookie"];

编辑：

OP想知道如何创建cookie。所以这里有一些代码

NSDictionary *cookieProperties = [NSDictionary dictionaryWithObjectsAndKeys:
                        @"domain.com", NSHTTPCookieDomain,
                        @"\\", NSHTTPCookiePath,  
                        @"myCookie", NSHTTPCookieName,
                        @"1234", NSHTTPCookieValue,
                        nil];
NSHTTPCookie *cookie = [NSHTTPCookie cookieWithProperties:cookieProperties];
NSArray* cookieArray = [NSArray arrayWithObject:cookie];
NSDictionary * headers = [NSHTTPCookie requestHeaderFieldsWithCookies:cookieArray];
[request setAllHTTPHeaderFields:headers];

Answer 2

不确定它是否仍然相关，但是如果有人发现它有用，这里是您在提出请求后获取cookie的方式。您应该在指定为connectionDidFinishLoading:的委托的对象中实现选择器NSURLConnection（在您的情况下为self）：

NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self startImmediately:YES];

在这个connectionDidFinishLoading：选择器中你可以像这样访问cookie：

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    NSHTTPCookieStorage * storage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
    NSArray * cookies = [storage cookiesForURL:connection.currentRequest.URL];
    for (NSHTTPCookie * cookie in cookies)
    {
        NSLog(@"%@=%@", cookie.name, cookie.value);
        // Here you can store the value you are interested in for example
    }
}

然后，这个存储的值可以用在这样的请求中：

[request setValue:[NSString stringWithFormat:@"%@=%@", cookieName, cookieValue] forHTTPHeaderField:@"Cookie"];

或更高级的setAllHTTPHeaderFields:，但请记住在NSHTTPCookiePath字段中使用正确的值，请参阅详细信息here

NSHTTPCookieStorage也有选择器-setCookies:forURL:mainDocumentURL:，也可以用来设置Cookie。

Answer 3

我遇到了同样的问题，WKWebView在初始加载时在PHP页面上显示了cookie，但是在重新加载/刷新页面时cookie已被清除。这就是我为使其发挥作用所做的一切。

我的WKWebView与cookie设置：

WKWebViewConfiguration *webViewConfig = [[WKWebViewConfiguration alloc] init]; // empty for now
_awesomeWebView = [[WKWebView alloc] initWithFrame:self.view.frame configuration:webViewConfig];
_awesomeWebView.UIDelegate = self;
[self.view addSubview:_awesomeWebView];

NSString *url = @"https://phpwebsitewithcookiehandling.com";
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url]];

// set all the cookies from my NSHTTPCookieStorage in the WKWebView too
[request setHTTPShouldHandleCookies:YES];
[request setAllHTTPHeaderFields:[NSHTTPCookie requestHeaderFieldsWithCookies:[NSHTTPCookieStorage sharedHTTPCookieStorage].cookies]];

// set the cookie on the initial load
NSString *cookie = @"status=awesome";
[request setValue:cookie forHTTPHeaderField:@"Cookie"];
NSLog(@"cookie set in WKwebView header: %@", cookie);

[_awesomeWebView loadRequest:request];

在我的phpwebsitewithcookiehandling.com上，我使用以下内容验证它是否有效：

<?php
    echo "<li>status is: " . $_COOKIE['status'];

    // Here comes the magic which set the servers SET-COOKIE header (apparently) so it works on consecutive page loads
    setcookie('status', $_COOKIE['status'], time() + (86400 * 30), '/');

    echo '<li><a href="">Blank reload</a>';
    echo '<li><a href="#" onclick="location.reload(true);">Javascript reload</a>';

    exit;
?>

经过多次试验和错误，它对我有用。祝好运。 :)

Answer 4

有源代码可以从NSHTTPURLResponse中提取Cookie字符串：

static NSString *CookieFromResponse(NSHTTPURLResponse *response) {
    NSArray<NSHTTPCookie *> *cookies = [NSHTTPCookie cookiesWithResponseHeaderFields:response.allHeaderFields forURL:response.URL];

    NSMutableString *cookieStr = [NSMutableString string];
    for (NSHTTPCookie *cookie in cookies) {
        if (cookieStr.length) {
            [cookieStr appendString:@"; "];
        }
        [cookieStr appendFormat:@"%@=%@", cookie.name, cookie.value];
    }
    return cookieStr.length ? cookieStr : nil;
}

并将Cookie字符串设置为NSMutableURLRequest：

NSString *cookieStr = CookieFromResponse(response);
[request addValue:cookieStr forHTTPHeaderField:@"Cookie"];

如何使用NSURLRequest设置Cookie？

4 个答案: