HAPENLY / UIWebviewWithCookie

两步实现iOS UIWebView 通过 cookie 完成自动登录。

UIWebviewWithCookie

这两天有个项目需求，在网上找了好多博文都不可以拿来就能实现（对于伸手党怎么能行），为了避免浪费大家的时间我在这里给出一份一定可行的方法：

1、相关知识点介绍

1. iOS在`UIWebView`中获取的cookie的方法：`NSHTTPCookieStorage * nCookies = [NSHTTPCookieStorage sharedHTTPCookieStorage]`
2. 再具体获取某个域的饼干：`NSArray* cookiesURL = [nCookies cookiesForURL：[NSURL URLWithString：@“你的URL”]];`
3. 通过`[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie]`方法将 `cookies`来保存起来，但是这样虽然可以保存`cookies`但是你应用退出之后还是会丢失(其实是cookies过期的问题)，做好的方法是把`cookies`放到`NSUserDefaults`保存起来:

2、实现方法

###1. 在UIWebView的代理方法中实现获取cookies并将cookies放到NSUserDefaults保存起来：

(void)webViewDidFinishLoad:(UIWebView *)webView中写入

 NSArray *nCookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies];
    NSHTTPCookie *cookie;
    for (id c in nCookies)
    {
        if ([c isKindOfClass:[NSHTTPCookie class]])
        {
            cookie=(NSHTTPCookie *)c;
            if ([cookie.name isEqualToString:@"PHPSESSID"]) {
                NSNumber *sessionOnly = [NSNumber numberWithBool:cookie.sessionOnly];
                NSNumber *isSecure = [NSNumber numberWithBool:cookie.isSecure];
                NSArray *cookies = [NSArray arrayWithObjects:cookie.name, cookie.value, sessionOnly, cookie.domain, cookie.path, isSecure, nil];
                [[NSUserDefaults standardUserDefaults] setObject:cookies forKey:@"cookies"];
                break;
            }
        }
    }

###2.获取cookies：运行之后，UIWebview加载url之前获取保存好的cookies，并设置cookies完

 NSArray *cookies =[[NSUserDefaults standardUserDefaults]  objectForKey:@"cookies"];
        NSMutableDictionary *cookieProperties = [NSMutableDictionary dictionary];
        [cookieProperties setObject:[cookies objectAtIndex:0] forKey:NSHTTPCookieName];
        [cookieProperties setObject:[cookies objectAtIndex:1] forKey:NSHTTPCookieValue];
        [cookieProperties setObject:[cookies objectAtIndex:3] forKey:NSHTTPCookieDomain];
        [cookieProperties setObject:[cookies objectAtIndex:4] forKey:NSHTTPCookiePath];
        NSHTTPCookie *cookieuser = [NSHTTPCookie cookieWithProperties:cookieProperties];
        [[NSHTTPCookieStorage sharedHTTPCookieStorage]  setCookie:cookieuser];

注意：要在[self.webView loadRequest:req];之前设置获取cookies！ 到现在为止你的应用肯定就已经实现了你想要的功能！ 简书地址