1.原理图(简图)
2.代码
设置session
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imp
imp
public class setSession extends HttpServlet{
public void doGet(HttpServletRequest req,
HttpServletResponse resp)
throws ServletException,
IOException{
HttpSession session=req.getSession();//返回与当前request相关联的session,如果没有则在服务器端创建一个;
session.setAttribute("username","zhangjie");
resp.getWriter().println("------setSession() is ok--------");
}
}
获取session:
imp
imp
imp
public class getSession extends HttpServlet{
public void doGet(HttpServletRequest req,
HttpServletResponse resp)
throws ServletException,
IOException{
HttpSession session=req.getSession();//返回与当前request相关联的session,如果没有则在服务器端创建一个;
resp.getWriter().println(session.getAttribute("username"));
resp.getWriter().println("------getSession() is ok--------");
}
}