handleexit.java

来自「jsp+javabean实现的会员管理系统」· Java 代码 · 共 52 行

package myservlet.control;

import mybean.data.*;
import java.sql.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class HandleExit extends HttpServlet {
	public void init(ServletConfig config) throws ServletException {
		super.init(config);
		try {
			Class.forName("com.mysql.jdbc.Driver");
		} catch (Exception e) {
		}
	}

	public String handleString(String s) {
		try {
			byte bb[] = s.getBytes("iso-8859-1");
			s = new String(bb);
		} catch (Exception ee) {
		}
		return s;
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		HttpSession session = request.getSession(true);
		Login login = (Login) session.getAttribute("login"); // 获取用户登录时的Javabean
		boolean ok = true;
		if (login == null) {
			ok = false;
			response.sendRedirect("login.jsp"); // 重定向到登录页面
		}
		if (ok == true) {
			continueDoPost(request, response);
		}
	}

	public void continueDoPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		HttpSession session = request.getSession(true);
		session.invalidate(); // 销毁用户的session对象
		response.sendRedirect("index.jsp"); // 返回主页
	}

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doPost(request, response);
	}
}