getsessionvalueservlet.java

《j2ee应用开发祥解》一书的源代码

package com.j2ee14.ch8;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
/**
 *从session中获得一些属性
 */
public class GetSessionValueServlet extends HttpServlet
{
		public void doGet(HttpServletRequest request,
                      HttpServletResponse response)
        throws IOException, ServletException
    {
        request.setCharacterEncoding("gb2312");
        response.setContentType("text/html;charset=gb2312");
        PrintWriter out = response.getWriter();
        //获得session
        HttpSession session=request.getSession(true);
        out.println("下面是session中userName属性的值:");
        //获得session中的属性
        out.println(session.getAttribute("userName"));
        out.println("<br>");
        out.println("下面是session中anotherAttr属性的值:");
        out.println(session.getAttribute("anotherAttr"));
        out.println("<br>");
        out.flush();
    }
}