第七周作业
1.教材P78-79 例4-9
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML>
<html>
<head>
<title>首页</title>
</head>
<body bgcolor="#ffccff">
<%
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="receive.jsp?id=A1001&price=8765">购买</a><br>
商品编号A1002，价格<%=price%>
<a href="receive.jsp?id=A1002&price=<%=price%>">购买</a>
</p>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML>
<html>
<head>
<title>第二页</title>
</head>
<body bgcolor="#eeeeff">
<p style="font-family: 宋体; font-size: 36; color: blue">
<%
String id = request.getParameter("id");
String price = request.getParameter("price");
%>
商品编号：<%=id %><br>
商品价格：<%=price %>
</p>
</body>
</html>
二、教材P97 实验2（计算器）
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>jsq1.jsp</title>
</head>
<body>
<form action="jsq2.jsp" method="post">
<p style="font-family:宋体;font-size: 18">
输入运算数并选择运算符：<br/><br/>
<input type="text" name="shu1" size=6 />
<select name="operator">
<option selected="selected" value="+">加
<option value="-">减
<option value="*">乘
<option value="/">除
</select>
<input type="text" name="shu2" size=6 /> <br/><br/>
<input type="submit" name="submit" value="提交"/>
</p>
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>jsq2.jsp</title>
</head>
<body>
<p style="font-family:宋体;font-size: 18">
<%String shu1=request.getParameter("shu1");
String shu2=request.getParameter("shu2");
String operator=request.getParameter("operator");
if(shu1==null||shu1.length()==0){
response.sendRedirect("jsq1.jsp");
return;
}else if(shu2==null||shu2.length()==0){
response.sendRedirect("jsq1.jsp");
return;
}
try{
double a=Double.parseDouble(shu1);
double b=Double.parseDouble(shu2);
double sum=0;
if(operator.equals("+"))
sum=a+b;
else if(operator.equals("-"))
sum=a-b;
else if(operator.equals("*"))
sum=a*b;
else if(operator.equals("/"))
sum=a/b;
out.print(a+""+operator+""+b+"="+sum);
}catch(Exception e){
out.print("请输入数字字符");
}
%>
</p>
</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）
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<body>
<script type="text/javascript">
function validate() {
if (loginForm.account.value == "") {
alert("账号不能为空！");
return;
} else if (loginForm.password.value == "") {
alert("密码不能为空！");
return;
}
loginForm.submit();
}
</script>
<form action="zhanghao.jsp" name="loginForm" method="post">
账号：<input type="text" name="account" placeholder="请输入账号"/><br>
密码:<input type="password" name="password" placeholder="请输入密码"/><br>
<input type="button" value="登录"onClick="validate()">
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<body>
<%
String account=request.getParameter("account");
String password=request.getParameter("password");
if(account.equals(password)){
request.getRequestDispatcher("ok.jsp").forward(request,response);
}
else{
response.sendRedirect("no.jsp");
}
%>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
%>
<html>
<body>
登陆成功！
</body>
</html>
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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); %><html> <body> 登陆失败！ </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”。
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head></head>
<body>
<form action="index1.jsp" method="post" name="login">
账号:<input type="text" name="account" /><br>
密码:<input type="password" name="psd" /><br>
是否注册为会员:<input type="checkbox" name="checkbox" />
<br>
<input type="submit" value="登录" style="margin-left: 100px" onclick="check()" />
<script type="text/javascript">
function check(){
if(login.account.value==""||login.account.value==null&&login.psd.value==""||login.psd.value==null){
alert("账号或密码不能为空！！！");
return ;
}
login.submit();
}
</script>
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String account=request.getParameter("account");
String psd=request.getParameter("psd");
String checkbox=request.getParameter("checkbox");
if(account.equals("123456")&&psd.equals("123456")){
if(checkbox!=null)
out.print("欢迎注册为会员"+"<br>");
out.print("登录成功！！！");
}
else{
out.print("登录失败！！！");
}
%>
</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。
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<form action="index2.jsp" method="post" name="form">
输入任意整数N：<input type="text" name="name" >
<input type="submit" value="提交">
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'index2.jsp' starting page</title>
</head>
<body>
<%
request.setCharacterEncoding("UTF-8");
String name=request.getParameter("name");
int n=Integer.parseInt(name);
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。
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
<head>
<title></title>
</head>
<body>
<form action="2.jsp" method="post" name="form">
<table>
<tr>
<td>账号</td>
<td><input type="text" name="zh" />
</td>
</tr>
<tr>
<td>密码</td>
<td><input type="password" name="password" />
</td>
</tr>
<tr>
<td><input type="button" value="登录" onclick="login()" />
</td>
</tr>
</table>
</form>
<script>
function login() {
if (form.zh.value == "") {
alert("用户名不能为空!");
form.zh.focus();
return;
}
if (form.password.value == "") {
alert('密码不能为空!');
form.password.focus();
return;
}
if(form.zh.value==form.password.value){
form.submit();
}else{
alert('登陆失败');
form.password.focus();
return;
}
}
</script>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
<head>
<title></title>
</head>
<body>
<%
String zh=request.getParameter("zh");
%>
<form action="3.jsp" method="post">
<input type="text" name="name" />
<input type="submit" value="提交" />
<input type="hidden" name="zh" value="<%=zh %>"/>
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
<head>
<title></title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String zh=request.getParameter("zh");
String name=request.getParameter("name");
out.print("用户姓名："+name+"<br>"+"用户账号："+zh);
%>
</body>
</html>
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