Cookie中某些特殊字符的使用

查阅了资料发现,Cookie对象的name和value属性中不可以包含空格和一下一些字符

[ ] ( ) = , " / ? @ : ;

解决办法
URL编码：

• (NSString )URLEncodedString
  {
  // CharactersToBeEscaped = @":/?&=;+!@#$()~',";
  // CharactersToLeaveUnescaped = @"[].";

  NSString *unencodedString = self;
  NSString *encodedString = (NSString )
  CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,
  (CFStringRef)unencodedString,
  NULL,
  (CFStringRef)@"!'();:@&=+$,/?%#[]",
  kCFStringEncodingUTF8));

  return encodedString;
  }
  URL解码：

• (NSString *)URLDecodedString
  {
  NSString *result = [(NSString *)self stringByReplacingOccurrencesOfString:@"+" withString:@" "];
  return [result stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
  }