ActionMessages的使用&cookies操作验证码

ActionMessages errors = new ActionMessages(); 

AuthCodeCookie authCodeCookie = new AuthCodeCookie(request,response); 

if (!authCodeCookie.getAuthCode().equals(form.getAuthCode())) {//验证码不正确 

 errors.add("error.login.authcode", new ActionMessage("error.login.authcode"));//ApplicationResources.properties 

 this.saveErrors(request, errors); 

         return mapping.getInputForward();//不跳转，必须在action中指定input属性 

} 


html中必须有：<html:errors/>接收 


登录的时候保存验证码到cookies，详见：验证码的生成，并且“看不清，换一张” 

AuthCodeCookie authCodeCookie = new AuthCodeCookie(request, response); 

authCodeCookie.addAuthCode(authCode);//保存验证码到cookies 


cookies类 

public class AuthCodeCookie { 

 private HttpServletRequest request; 

 private HttpServletResponse response; 

 public AuthCodeCookie(HttpServletRequest request, 

 HttpServletResponse response) { 

 this.request = request; 

 this.response = response; 

 } 


 public void addAuthCode(String authCode) { 

 addCookie("AUTHCODE", authCode); 

 } 


 public void addCookie(String name, String value) { 

 Cookie cookies = new Cookie(name, value); 

 cookies.setPath("/"); 

 cookies.setMaxAge(-1);//设置cookie经过多长秒后被删除。如果0，就说明立即删除。如果是负数就表明当浏览器关闭时自动删除。 

 response.addCookie(cookies); 

 } 


 public String getAuthCode(){ 

 return getCookies("AUTHCODE"); 

 } 


 public String getCookies(String cookieName) { 

 Cookie[] cookies = request.getCookies(); 

 Cookie cookie = null; 

 try { 

 if (cookies != null && cookies.length > 0) { 

 for (int i = 0; i < cookies.length; i++) { 

 cookie = cookies[i]; 

 if (cookie.getName().equals(cookieName)) { 

 return cookie.getValue(); 

 } 

 } 

 } 

 } catch (Exception e) { 

 e.printStackTrace(); 

 } 

 return ""; 

 } 

}