第七次作业
1.教材P78-79 例4-9
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'demo4.9.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body bgcolor=#ffccff>
<%
double price = 56.56;
%>
<p style="font-family:宋体;font-size:36;color:blue">
商品编号A0132,价格99 <a href="demo4.9receive.jsp?id=A0132&price=56.56">购买</a><br>
商品编号A0133,价格<%=price%>
<a href="demo4.9receive.jsp?id=A0133&price=<%=price%> ">购买</a>
</p>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'demo4.9receive.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</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 %>
</p>
<a href="demo4.9.jsp">返回购买页</a>
</body>
</html>
2.教材P97 实验2
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><html> <head> </head> <body> <form action="counter.jsp" method="post"> 输入运算数，选择运输符号：<br> <input type="text" name="num1" size="5"/> <select name="sel"> <option selected="selected" value="+">加</option> <option value="-">减</option> <option value="*">乘</option> <option value="/">除</option> </select> <input type="text" name="num2" size="5"/><br> <input type="submit" name="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>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String numberOne=request.getParameter("numberOne");
String numberTwo=request.getParameter("numberTwo");
String op=request.getParameter("op");
if(numberOne==null||numberOne.length()==0){
response.sendRedirect("week7.jsp");/* 获取方法 */
return;
}
else if(numberTwo==null||numberTwo.length()==0){
response.sendRedirect("second01.jsp");
return;
}
try{
double a=Double.parseDouble(numberOne);
double b=Double.parseDouble(numberTwo);
double r=0;
if(op.equals("+"))
r=a+b;
else if(op.equals("-"))
r=a-b;
else if(op.equals("*"))
r=a*b;
else if(op.equals("/"))
r=a/b;
out.print(a+" "+op+" "+b+"-"+r);
}
catch(Exception e){
out.println("请输入数字字符");
}
%>
</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）
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML >
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<script>
function yz() {
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="index3.jsp" method="post" name="form">
<table>
<tr>
<td>用户名:<input type="text" name="user" />
</td>
</tr>
<tr>
<td>密码：<input type="password" name="password" />
</td>
</tr>
<tr>
<td>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%>"></td>
</tr>
<tr>
<td>是否注册会员：<input type="radio"