📄 indexservlet.java
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package com.allan.ums.view;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class IndexServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=gbk");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println(" <head>");
out.println(" <title>系统登录</title></head>");
out.println(" <body>");
out.println(" <h3 align=\"center\">欢迎使用用户信息管理系统</h3>");
out.println(" <hr>");
out.println(" <form method=\"post\" action=\"/ums/login.action\">");
out.println(" <table align=\"center\" border=\"1\">");
out.println(" <tr>");
out.println(" <td>用户名</td>");
out.println(" <td>");
out.println(" <input type=\"text\" name=\"username\" value=\"" + getCookie(request, "username") + "\">");
out.println(" </td>");
out.println(" </tr>");
out.println(" <tr>");
out.println(" <td>密码</td>");
out.println(" <td>");
out.println(" <input type=\"password\" name=\"password\" value=\"" + getCookie(request, "password") + "\">");
out.println(" </td>");
out.println(" </tr> ");
out.println(" <tr>");
out.println(" <td>验证码</td>");
out.println(" <td>");
out.println(" <input type=\"text\" name=\"token\">");
out.println(" <img src=\"/ums/token/image\" onclick=\"this.src='/ums/token/image'\">");
out.println(" </td>");
out.println(" </tr> ");
out.println(" <tr>");
out.println(" <td>记录登录信息</td>");
out.println(" <td>");
out.println(" <select name=\"period\">");
out.println(" <option value=\"0\">不计录</option>");
out.println(" <option value=\"1\">一个月</option>");
out.println(" <option value=\"6\">半年</option>");
out.println(" <option value=\"12\">一年</option>");
out.println(" </select>");
out.println(" </td>");
out.println(" </tr> ");
out.println(" </table>");
out.println(" <br>");
out.println(" <center>");
out.println(" <input type=\"submit\" value=\"登录\">");
out.println(" </center>");
out.println(" </form>");
out.println(" </body>");
out.println("</html>");
out.flush();
out.close();
}
private String getCookie(HttpServletRequest request, String name){
Cookie[] cookies = request.getCookies();
if(cookies == null){
return "";
}
for(Cookie c : cookies){
if(c.getName().equals(name)){
return c.getValue();
}
}
return "";
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
}
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