如何处理不同url的servlet会话?

时间:2012-10-31 07:29:36

标签: java java-ee servlets

我有一个使用过滤器servlet创建会话的Web应用程序,但是我遇到如下问题:

url1: localhost:8080/home.html

url2: localhost:8080/user/1.html

如果用户首先访问url1,则会创建会话,如果用户导航到url2。它不会创建第二个会话。

但如果用户首先访问url2,则会创建会话,如果用户导航到url2。它将创建第二个新会话。

它出了什么问题?

如果用户首先访问/,它会为/user创建一个JSESSIONID cookie,为url2创建另一个。

我的代码在这里:

public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws IOException, ServletException  {
String errorMsg = null;
if (request instanceof HttpServletRequest && response instanceof HttpServletResponse)
{
  final HttpServletRequest httpRequest = (HttpServletRequest) request;
  final HttpServletResponse httpResponse = (HttpServletResponse) response;
  httpRequest.setCharacterEncoding("UTF-8");
  HttpSession httpSession = httpRequest.getSession(false);
  String path = httpRequest.getServletPath();

  if ("/login.htm".equals(path)){
       String mail = httpRequest.getParameter("mail");
      String password = httpRequest.getParameter("password"); 

      if ((!Utils.isNull(mail)) && (!Utils.isNull(password)))
      {
        UserDTO dto = new UserDTO();
        dto.setPassword(password);
        dto.setMail(mail);
        dto = is.loginValidate(dto);

        if(dto!=null){
            dto.setClientid(httpRequest.getHeader("User-Agent") + httpRequest.getRemoteAddr());
            httpSession.setAttribute("system.userinfo", dto);
            is.saveLastLoginDate(httpRequest);
        }
      }
  }else{
      if(httpSession==null){
          httpSession = httpRequest.getSession(true);
      }
      Object obj = httpSession.getAttribute("system.userinfo");
      if(obj==null){
        UserDTO dto = new UserDTO();
        dto.setUid(GUESTID);
        dto.setClientid(httpRequest.getHeader("User-Agent") + httpRequest.getRemoteAddr());
        httpSession.setAttribute("system.userinfo", dto);
      }
  }

1 个答案:

答案 0 :(得分:0)

它看起来是一个环境问题,如果我更换另一台电脑,问题就会消失