ios 中有的请求需要带cookie, 验证登陆等.
ios默认是会把url 的cookie保存到本地, 但不是实时保存的, 会有延迟, 一般理解为在系统空闲时去保存 . 所以为了实时给url添加cookie, 我们最好将请求url 后获取到的cookie 保存到本地, 用NSUserDefault即可
在设置Cookie之前，先让我们了解一下通用Cookie格式，多个Cookie的格式通常为：cookie1=value1; cookie2=value2; cookie3=value3;
这里特别要注意，多个cookie之间用分号+空格分隔开，不是&也不是单纯的空格。我所了解到的iOS设置Cookie的方法有两种，分别如下。
方法一：
NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@",YourURL]]];
NSMutableString *cookieString = [[NSMutableString alloc]init];
[cookieString appendFormat:@"userid=%@;",@"xxxx"];
[cookieString appendFormat:@"sessionid=%@;",@"xxxx"];
[cookieString appendFormat:@"nickname=%@;",@"xxxx"];
[req setValue:cookieString forHTTPHeaderField:@"Cookie"];
方法二：
NSDictionary *properties1 = [NSDictionary dictionaryWithObjectsAndKeys:
@"domain.com", NSHTTPCookieDomain,
@"/", NSHTTPCookiePath,
@"userid", NSHTTPCookieName,
@"tangtang", NSHTTPCookieValue, nil];
NSDictionary *properties2 = [NSDictionary dictionaryWithObjectsAndKeys:
@"domain.com", NSHTTPCookieDomain,
@"/", NSHTTPCookiePath,
@"pid", NSHTTPCookieName,
@"xiaotang", NSHTTPCookieValue,
nil];
NSHTTPCookie *cookie1 = [NSHTTPCookie cookieWithProperties:properties1];
NSHTTPCookie *cookie2 = [NSHTTPCookie cookieWithProperties:properties2];
NSArray* cookies = [NSArray arrayWithObjects:cookie1, cookie2, nil];
NSDictionary * headers = [NSHTTPCookie requestHeaderFieldsWithCookies:cookies];
request.allHTTPHeaderFields = headers; //这句才是关键
注意: 一定要把cookie设置到request.allHTTPHeaderFields中才会生效.
网上好多的demo都是这样设置cookie的 --- [[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:cookie]; 亲测不能用
update 于当天下午
现在是这样, 要在每一次请求的时候都要带cookie, 如果要按上面那种写法之有在第一次请求的时候带cookie, 其他请求都带不上了,
解决方法 :
-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
NSString *urlString = [[request URL] absoluteString];
NSLog(@"urlString = %@",urlString);
NSMutableURLRequest *mutableRequest = [request mutableCopy];
NSDictionary *requestHeaders = request.allHTTPHeaderFields;
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
// 判断请求头是否已包含，如果不判断该字段会导致webview加载时死循环
if (!requestHeaders[@"Cookie"]) {
NSString *ticket = [userDefaults objectForKey:MMH_USER_DEFAULT_USER_TICKET];
NSMutableString *cookieString = [[NSMutableString alloc]init];
[cookieString appendFormat:@"ESHOP_H5_T=%@;",ticket];
[mutableRequest setValue:cookieString forHTTPHeaderField:@"Cookie"];
NSLog(@"ticket == %@", ticket);
request = [mutableRequest copy];
[webView loadRequest:request];
return NO;
}else{
return YES:
}