每日学习090314

/**
  * Cookie.class 里面代码片断
  *
  */
private boolean isToken(String value){		 
		for(int i = 0 ;i<value.length();i++){
			char c = value.charAt(i);
			if( c < 0x20 || c > 0x7f ){
				return false;
			}
		}
		return true;
} 

//409 
response.sendError(HttpServletResponse.SC_CONFLICT);