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public class TokenProcessor {
private long privious;//ÉÏ´ÎÉú³É±íµ¥±êʶºÅµÃʱ¼äÖµ
private static TokenProcessor instance=new TokenProcessor();
public static String FORM_TOKEN_KEY="FORM_TOKEN_KEY";
private TokenProcessor(){
}
public static TokenProcessor getInstance(){
return instance;
}
/**
* ÑéÖ¤ÇëÇóÖеñêʶºÅÊÇ·ñÓÐЧ£¬Èç¹ûÇëÇóÖÐµÄ±íµ¥±êʶÓ뵱ǰÓû§sessionÖеÄÏàͬ£¬·µ»Ø½á¹ûtrue=
*/
public synchronized boolean isTokenValid(HttpServletRequest request){
//δ±ÜÃâsession¶ÔÏó²»´æÔÚʱºò´´½¨Session¶ÔÏó
HttpSession session=request.getSession(false);
if(session==null){return false;}
String saved=(String)session.getAttribute(FORM_TOKEN_KEY);
if(saved==null){
return false;
}
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