Java Web Session設置

一、前言

　　在做 java web項目時，我們很多時候都要用到 Session，那么我就簡單的寫一下 Session 的寫法。

二、代碼實現 Servlet Session 的設置

package com.wz.option;

import java.io.IOException;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

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

import com.wz.dto.AdminDto;
import com.wz.test.AdminCRUD;

import net.sf.json.JSONArray;

public class loginWZ extends BaseServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // 獲取session
        HttpSession hs = request.getSession();

        request.setCharacterEncoding("utf-8");
        String adminNumber = request.getParameter("adminNumber");
        String adminPassword = request.getParameter("adminPassword");

        AdminCRUD admin = new AdminCRUD();
        List<AdminDto> a = admin.getAdmin();
        int id = 0;
        for (AdminDto dto : a) {
            if (dto.getAccoutNumber().equals(adminNumber) && dto.getPassword().equals(adminPassword)) {
　　　　　　　　　　//設置 Session 的值
                id = dto.getId();
                hs.setAttribute("AdminID", dto.getId());
                hs.setAttribute("adminNumber", dto.getAccoutNumber());
                hs.setAttribute("adminPassword", dto.getPassword());
                hs.setAttribute("realName", dto.getRealName());
                break;
            }
        }

        if (id != 0) {
            request.getRequestDispatcher("Admin/index.jsp").forward(request, response);
        } else {
            request.getRequestDispatcher("login.jsp").forward(request, response);
        }

    }
}

三、獲取 Session

HttpSession hs=request.getSession();
String name=(String)hs.getAttribute("realName");

四、總結

　　這就是 Session 的使用，希望以后自己忘記了，就來看看！