iOS开发--http请求设置Cookie

    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：

NSMutableString *cookieString = [[NSMutableString alloc] init];
[cookieString appendFormat:@"userid=%@;", @"xxxx"];
[cookieString appendFormat:@" sessionid=%@;", @"xxxx"];
[cookieString appendFormat:@" nickname=%@;", @"xxxx"];

[request setValue:cookieString forHTTPHeaderField:@"Cookie"];

方法二：

NSDictionary *properties1 = [NSDictionary dictionaryWithObjectsAndKeys:
@"domain.com", NSHTTPCookieDomain,
@"/", NSHTTPCookiePath,
@"userid", NSHTTPCookieName,
strUserId, NSHTTPCookieValue,
nil];

NSDictionary *properties2 = [NSDictionary dictionaryWithObjectsAndKeys:
@"domain.com", NSHTTPCookieDomain,
@"/", NSHTTPCookiePath,
@"pid", NSHTTPCookieName,
pid, 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