第七周作业

1.教材P78-79  例4-9

example4_9.jsp:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>???????</title>
</head>
<body>
<% 
double price = 98.78;
%>
<p style ="font-family:宋体;font-size:36;color:blue">
商品编号A1001,价格8765
<a href ="example4_9_receive.jsp?id=A1001&price=8765">购买</a><br>
商品编号A1002,价格<%=price%>
<a href ="example4_9_receive.jsp?id=A1001&price=<%=price %>">购买</a>
</p>
</body>
</html>
example4_9.jsp:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>???????</title>
</head>
<body>
<% 
double price = 98.78;
%>
<p style ="font-family:宋体;font-size:36;color:blue">
商品编号A1001,价格8765
<a href ="example4_9_receive.jsp?id=A1001&price=8765">购买</a><br>
商品编号A1002,价格<%=price%>
<a href ="example4_9_receive.jsp?id=A1001&price=<%=price %>">购买</a>
</p>
</body>
</html>

 

 

 2.教材P97 实验2

input.jsp:

<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>???????</title>
</head>
<body>
<form action="computer.jsp" method=post name=form>
<p style="font-family:宋体;font-size:18;color:blue">
输入运算数,选择运算符号:<br>
<input type=text name="numberOne" size=6/>
  <select name="operator">
     <option selected="selected" value="+"><option value="-"><option value="*"><option value="/"></select>
     <input type=text name="numberTwo"size=6/>
     <br><input type="submit" name="submit" value="提交"/>
     </form>>
</body>
</html>
computer.jsp:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>???????</title>
</head>
<body>
<p style="font-family=宋体;font-size:18;color:black">
<%
  String numberOne=request.getParameter("numberOne");
String numberTwo=request.getParameter("numberTwo");
String operator=request.getParameter("operator");
if(numberOne == null||numberOne.length()==0){
    response.sendRedirect("input.jsp");
    return;
}
else if(numberTwo ==null||numberTwo.length()==0){
    response.sendRedirect("input.jsp");
    return;
}
   try{
        double a=Double.parseDouble(numberOne);
        double b=Double.parseDouble(numberTwo);
        double r=0;
        if(operator.equals("+"))
            r=a+b;
        else  if(operator.equals("-"))
            r=a-b;
        else if(operator.equals("*"))
                r=a*b;
        else if(operator.equals("/"))
            r=a/b;
        out.print(a+""+operator+""+b+"="+r);
}
   catch(Exception e){
       out.println("请输入字符");
   }

%>
</body>
</html>

 

 

 3.制作一个登陆表单,输入账号和密码,如果账号密码相同,跳转到“登录成功”页面,否则跳转到“登录失败”页面。(加上JS非空验证)(选做,加验证码)

login.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>登录页面</title>
</head>
<body>
<script type="text/javascript">
        function validate(){
            if(loginForm.uname.value==""){
                alert("账号不能为空!");
                return;
            }
            if(loginForm.upwd.value==""){
                alert("密码不能为空!");
                return;
            }
            loginForm.submit();
        }
    </script>
    <form name="loginForm" action="dologin.jsp" method="post">    
           用户名:<input type="text" name="uname" ><br>
     <br>密码: <input  type="password" name="upwd" >
            <br><input type="button" value="登录" onClick="validate()">    
               <input type="reset" value="重置">
    </form>
</body>
</html>

dologin.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    request.setCharacterEncoding("utf-8");
    String uname = request.getParameter("uname");
    String upwd = request.getParameter("upwd");
    if (uname.equals("admin") && upwd.equals("admin"))
        //跳转Ok页面
        request.getRequestDispatcher("ok.jsp").forward(request,    response);
    else
        //跳转no页面
        request.getRequestDispatcher("no.jsp").forward(request,    response);
%>
ok.jsp:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>登录成功页面</title>
</head>
<body>
<h1>登陆成功!!</h1>
</body>
</html>

no.jsp:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>登录失败页面</title>
</head>
<body>
<h1>登陆失败!!</h1>
</body>
</html>

 

 

 4.在上题的表单中增加一个checkbox,让用户选择“是否注册为会员",如果注册为会员,则在显示时增加文本“欢迎您注册为会员”。

login.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>登录页面</title>
</head>
<body>
<script type="text/javascript">
        function validate(){
            if(loginForm.uname.value==""){
                alert("账号不能为空!");
                return;
            }
            if(loginForm.upwd.value==""){
                alert("密码不能为空!");
                return;
            }
            loginForm.submit();
        }
    </script>
    <form name="loginForm" action="dologin.jsp" method="post">    
           用户名:<input type="text" name="uname" ><br>
     <br>密码: <input  type="password" name="upwd" ><br>
            
         <br>  是否注册会员:
        <input type="checkbox" name="yes" value="1"/>注册
        <input type="checkbox" name="yes" value="2"/>不注册<br>
       <br><input type="button" value="登录" onClick="validate()">    
               <input type="reset" value="重置">
    </form>
</body>
</html>

ok.jsp:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>登录成功页面</title>
</head>
<body>
<h1>登陆成功!!</h1>
<%
    String []yes=request.getParameterValues("yes");
    for(int i=0;i<yes.length;i++){
    if(yes[i].equals("1")){
    out.print("注册为会员");
    }
    }
     %>
</body>
</html>

 

5.在页面1的表单内输人一个数字N,提交,能够在另一个页面打印N个“欢迎”字符串。

New.File.jsp:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>???????</title>
</head>
<body>
<form action="NewFile1.jsp" name="logindo">
        请输入数字: <input type="text" name="number" size=6><br> <input
            type="submit" value="提交" />
    </form>
</body>
</html>

New.File1.jsp:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>???????</title>
</head>
<body>
 <%
        String number = request.getParameter("number");
        int n = Integer.parseInt(number);
        for (int i = 0; i < n; i++) {
            out.print("欢迎" + "</br>");
        }
    %>
</body>
</html>

 

 

 

 6.在页面1中输入账号和密码,进行登录,如果账号和密码相同,则认为成功登录到页面2,在页面2中显示一个文本框输人用户姓名,输人之后提交,在页面3中显示用户的账号和姓名。(转发)request.getRequestDispacher.....forward

login.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title>登录页面</title>
</head>
<body>
<script type="text/javascript">
        function login() {
            if (logindo.admin.value == "") {
                alter("账号不能为空");
                return;
            } else if (logindo.password.value == "") {
                alter("密码不能为空");
                return;
            }
            logindo.submit();
        }
    </script>
    <form action="dologin.jsp" name="logindo">
        账号: 
        <input type="text" name="admin" size=6><br>
         密码:
          <input type="password" name="password" size=6><br>
          <br><input type="button" value="登录" onclick="login()" />
    </form>
</body>
</html>

dologin.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
        String admin = request.getParameter("admin");
        String password = request.getParameter("password");
        if (admin.equals(password)) {
            request.getRequestDispatcher("ok.jsp").forward(request,
                    response);
        } else {
            response.sendRedirect("no.jsp");
        }
    %>
%>

ok.jsp:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>登录成功页面</title>
</head>
<body>
<h1>登陆成功!!</h1>
  <%
    String admin = request.getParameter("admin");
     %>
    <form action="NewFile2.jsp">
        用户名:<input type="text" name="uname"> <input type="submit"value="提交"> 
        <input name="admin" type="hidden" value="<%= admin %>">
    </form>
</body>
</html>

New.File2:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>???????</title>
</head>
<body>
 <%
    String admin = request.getParameter("admin");
    String uname = request.getParameter("uname");
    out.print("账号:"+admin+"</br>"+"用户名称:"+uname);
     %>
</body>
</html>

no.jsp:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>登录失败页面</title>
</head>
<body>
<h1>登陆失败!!</h1>
</body>
</html>

 

 

 

posted @ 2022-04-17 17:39  好多鱼好多鱼好剩余  阅读(16)  评论(0编辑  收藏  举报