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  • jsp中退出功能实现代码

    jsp中<a href="/bbs/servlet/Logout">退出</a>

    servlet中

    package inspur.bbs.control;

    import java.io.IOException;
    import java.io.PrintWriter;

    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import javax.servlet.http.HttpSession;

    public class Logout extends HttpServlet {

     /**
      * Constructor of the object.
      */
     public Logout() {
      super();
     }

     /**
      * Destruction of the servlet. <br>
      */
     public void destroy() {
      super.destroy(); // Just puts "destroy" string in log
      // Put your code here
     }

     /**
      * The doGet method of the servlet. <br>
      *
      * This method is called when a form has its tag value method equals to get.
      *
      * @param request the request send by the client to the server
      * @param response the response send by the server to the client
      * @throws ServletException if an error occurred
      * @throws IOException if an error occurred
      */
     public void doGet(HttpServletRequest request, HttpServletResponse response)
       throws ServletException, IOException {

      this.doPost(request, response);
     }

     /**
      * The doPost method of the servlet. <br>
      *
      * This method is called when a form has its tag value method equals to post.
      *
      * @param request the request send by the client to the server
      * @param response the response send by the server to the client
      * @throws ServletException if an error occurred
      * @throws IOException if an error occurred
      */
     public void doPost(HttpServletRequest request, HttpServletResponse response)
       throws ServletException, IOException {

      response.setContentType("text/html");
      PrintWriter out = response.getWriter();
      HttpSession session=request.getSession(true);
      session.invalidate();
      this.getServletConfig().getServletContext().getRequestDispatcher("/login.jsp").forward(request, response);
      out.flush();
      out.close();
     }

     /**
      * Initialization of the servlet. <br>
      *
      * @throws ServletException if an error occurs
      */
     public void init() throws ServletException {
      // Put your code here
     }

    }

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  • 原文地址:https://www.cnblogs.com/moonfans/p/2700561.html
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