4.14

public class tea {
    private int uid;
    private String uname;
    private String upass;
    //访问器
    public int getUid() {
        return uid;
    }
    public void setUid(int uid) {
        this.uid = uid;
    }
    public String getUname() {
        return uname;
    }
    public void setUname(String uname) {
        this.uname = uname;
    }
    public String getUpass() {
        return upass;
    }
    public void setUpass(String upass) {
        this.upass = upass;
    }
    //构造器
    public tea(int uid, String uname, String upass) {
        super();
        this.uid = uid;
        this.uname = uname;
        this.upass = upass;
    }
    public tea() {
        super();
    }
    
    
    
    
    
}

body {
  margin:0;
  height:1080;
  1920;
  background-image:url(beijing.png);
  background-repeat:no-repeat;
}

ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
background-color: #333;
position: fixed;
top: 0;
 100%;
}

li {
float: left;
}

li a {
display: block;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}

li a:hover:not(.active) {
background-color: #111;
}

p {
  text-align:center;
}


.active {
background-color: #4CAF50;
}

.form {
  350px;
  height:200px;
  background-color:rgba(1,0,1,0.5);
}

.weizhi {
  position:relative;
  top:200px;
  left:610px;
}
.up {
  position: relative;
  top:150px;
}

<%@page import="com.gd.dao.StuDao"%>
<%@page import="com.gd.bean.Stu"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
    Stu s = new Stu();
    
    String uname = request.getParameter("uname");
    s.setUname(uname);
    String upwd = request.getParameter("upwd");
    s.setUpwd(upwd);
    
    StuDao sd=new StuDao();
    if(sd.addStu(s)>0){
        //跳转注册成功页面 
        request.getRequestDispatcher("welcome.jsp").forward(request,response);
    }else{
        //错误页面 
        request.getRequestDispatcher("no.jsp").forward(request,response);
    }
    
    
    
%>

<%@page import="com.gd.dao.stuDao"%>
<%@page import="com.gd.bean.stu"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
    stu s = new stu();
    int id = Integer.parseInt(request.getParameter("sid"));
    s.setSid(id);
    String uname = request.getParameter("uname");
    s.setUname(uname);
    String upwd = request.getParameter("upwd");
    s.setUpwd(upwd);
    stuDao sd=new stuDao();
    if(sd.addstu(s)>0){
        //跳转注册成功页面 
    }else{
        //错误页面 
    }    
%>
<%    
    if(uname.equals("zs")&&upwd.equals("123")){
    //跳转成功登录页面
    request.getRequestDispatcher("welcome.jsp").forward(request, response);
    session.setAttribute("uname",uname);
    }
    else{
    //错误页面
    request.getRequestDispatcher("index.jsp").forward(request, response);
    }
%>