这个是jsp的文件------------------------------------------------------------------------------------------------------------<%@ page language="java" import="java.net.URLDecoder" pageEncoding="utf-8"%><%String username="";String password="";Cookie cookies[]=request.getCookies();if(cookies!=null){ for(int i=0;i<=cookies.length;i++){ if(cookies[i].getName().equals("Name")){ username=URLDecoder.decode(cookies[i].getValue(),"utf-8"); }; if(cookies[i].getName().equals("Password")){ password=cookies[i].getValue(); }; };};%><html><head><title>登陆页面</title></head><body><form action="LoginServlet" method="post">用户名:<input type="text" name="username" value="<%out.print(username); %>">密码:<input type="password" name="password" value="<%out.print(password); %>">Cookies:<select name="cookietime"><option value="0">不保存</option><option value="1">一整天</option><option value="30">一整月</option><option value="365">一整年</option></select><input type="submit" name="login" value="登陆"><input type="reset" value="重置"></form></body></html>下面这个是java的文件------------------------------------------------------------------------------------------------------import java.io.*;import java.net.URLEncoder;import java.util.Calendar;import java.util.Date;import javax.servlet.*;import javax.servlet.http.*;public class LoginServlet extends HttpServlet { public LoginServlet() { super(); } public void destroy() { super.destroy(); } public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { req.setCharacterEncoding("utf-8"); String cookietime=req.getParameter("cookietime"); int cookietimes=Integer.parseInt(cookietime.trim()); Cookie c=new Cookie("Name",URLEncoder.encode(req.getParameter("username"),"utf-8")); c.setMaxAge(cookietimes*60*60*24); c.setPath("/"); res.addCookie(c); Cookie a=new Cookie("Password",req.getParameter("password")); a.setMaxAge(cookietimes*68*60*24); a.setPath("/"); res.addCookie(a); Calendar calendar=null; String message=null; calendar=Calendar.getInstance(); Date trialTime=new Date(); calendar.setTime(trialTime); int hour=calendar.get(Calendar.HOUR_OF_DAY); if(hour<12){ message="Good morning!"; } else{ message="Good afternoon!"; } if(req.getParameter("username").equals("张三")&&req.getParameter("password").equals("1234")){ req.setAttribute("message", message); req.getRequestDispatcher("/MyJsp.jsp").forward(req, res); } else { res.sendRedirect("http://localhost:8080/index1/index.jsp?message=sorry please register"); } } public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { this.doGet(req, res); } public void init() throws ServletException { }}
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逆光之羽
TA贡献55条经验 获得超13个赞
java.lang.ArrayIndexOutOfBoundsException: 1
报的异常是这个？
//jsp里这儿把等号去掉
for(int i=0;i<cookies.length;i++){添加回答
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