第七周作业
一、教材P78-79 例4-9
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<%@ page contentType="text/html"%>
<%@ page pageEncoding="utf-8"%>
<html>
<head>
<title>My JSP 'index.jsp' starting page</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 contentType="text/html"%>
<%@ page pageEncoding="utf-8"%>
<html>
<head>
<title>My JSP 'index.jsp' starting page</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");
%>
<b>商品编号:<%=id %><br>
商品价格:<%=price %>
</b>
</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）
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"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head> <!-- seven04.jsp -->
</head>
<body>
<script>
function lg() {
if (form.user.value == "") {
alert("账号不能为空!");
return;
}
if (form.password.value == "") {
alert("密码不能为空!");
return;
}
if (form.validationCode.value == "") {
alert("验证码不能为空，请输入验证码");
form.validationCode.focus();
return;
}
if (form.validationCode.value != form.validationCode1.value) {
alert("请输入正确的验证码");
form.validationCode.focus();
return;
}
form.submit();
}
</script>
<%
int intmethod1 = (int) ((((Math.random()) * 5)) + 1);
int intmethod2 = (int) ((((Math.random()) * 5)) + 1);
int intmethod3 = (int) ((((Math.random()) * 5)) + 1);
int intmethod4 = (int) ((((Math.random()) * 5)) + 1);
String intsum = intmethod1 + "" + intmethod2 + intmethod3
+ intmethod4;
%>
<form action="seven05.jsp" method="post" name="form">
用户名:<input type="text" name="user" /> <br>
密码：<input type="password" name="password" /><br>
验证码：<input type="text" name="validationCode"
onKeyDown="if(event.keyCode==13){form.submit.focus();}" size="6">
<input type="button" name="validationCode1" size="1"
value="<%=intsum%>"><br>
是否注册会员：<input type="radio" name="lg" value="是" />是
<input type="radio" name="lg" value="否" />否 <br>
<input type="submit" value="登录" onclick="yz()" />
<br>
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <!-- seven05.jsp --> </head> <body> <% request.setCharacterEncoding("utf-8"); String user = request.getParameter("user") == null ? "" : request.getParameter("user"); String password = request.getParameter("password") == null ? "": request.getParameter("password"); if (user.equals(password)) { request.getRequestDispatcher("seven06.jsp").forward(request, response); } else { request.getRequestDispatcher("seven07.jsp").forward(request, response); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head> <!-- seven06.jsp -->
</head>
<body>
<h1>登陆成功</h1>
<%
request.setCharacterEncoding("utf-8");
String lg=request.getParameter("lg");
if(lg.equals("是")){
out.print("欢迎您注册为会员");
}
%>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head> <!-- seven07.jsp -->
</head>
<body>
<h1>登陆失败</h1>
<% request.setCharacterEncoding("utf-8");%>
</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> <!-- seven08.jsp -->
</head>
<body>
<form action="seven09.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> <!-- seven09.jsp --> </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>
六、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 PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>shouye.jsp</title>
</head>
<body>
<form action="panduan2.jsp" method="post" name="shouye">
请输入账号：<input name="uname" type="text"/><br/>
请输入密码：<input name="password" type="password"/><br/>
<input type="button" value="登录" onclick="denglu()">
<script type="text/javascript">
function denglu(){
if(shouye.uname.value==""){
alert("账号不能为空！");
return;
}
if(shouye.password.value==""){
alert("密码不能为空！");
return;
}
shouye.submit();
}
</script>
</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>panduan2.jsp</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String uname=request.getParameter("uname");
String password=request.getParameter("password");
if(uname.equals(password)){
request.getRequestDispatcher("zhuce.jsp").forward(request, response);
}else{
out.print("登陆失败");
}
%>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>zhuce.jsp</title>
</head>
<body>
<%String a=request.getParameter("uname"); %>
<form action="tijiao.jsp" method="post">
请输入姓名：<input type="text" name="name" /><br/>
<input type="hidden" name="b" value="<%=a %>" />
<input type="submit" name="ok" 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>tijiao.jsp</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String name=request.getParameter("name");
String uname=request.getParameter("b");
%>
你的账号为：<%=uname %><br/>
你的姓名为：<%=name %>
</body>
</html>
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