jsp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>My JSP 'index.jsp' starting page</title>
</head>
<body>
<%
double price = 98.78;
%>
<p style="font-family: 宋体;font-style: 36;color: blue">
商品编号A1001,价格8765 <a href="index1.jsp?id=A1001&price=8765">购买</a>
商品编号A1002,价格<%=price%>
<a href="index1.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>My JSP 'index.jsp' starting page</title>
</head>
<body>
<p style="font-family: 宋体;font-style: 36;color: blue">
<%
String id = request.getParameter("id");
String price = request.getParameter("price");
%>
<strong>商品编号：<%=id%><br> 商品价格：<%=price%> </strong>
</p>
</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"%>
<html>
<head>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String num1 = request.getParameter("num1");
String num2 = request.getParameter("num2");
String sel = request.getParameter("sel");
if (num1 == null || num1.length() == 0) {
response.sendRedirect("input.jsp");
return;
} else if (num2 == null || num2.length() == 0) {
response.sendRedirect("input.jsp");
return;
}
try {
double n1 = Double.parseDouble(num1);
double n2 = Double.parseDouble(num2);
double s = 0;
if (sel.equals("+"))
s = n1 + n2;
else if (sel.equals("-"))
s = n1 - n2;
else if (sel.equals("*"))
s = n1 * n2;
else if (sel.equals("/"))
s = n1 / n2;
out.print(n1 + "" + sel + "" + n2 + "=" + s);
} catch (Exception e) {
out.print("输入错误");
}
%>
</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 > <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" name="hy" value="是" />是 <input type="radio" name="hy" value="否" />否 </td> </tr> <tr> <td><input type="button" value="登录" onclick="yz()" /> </td> </tr> </table> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML > <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <h1>登录成功</h1> <% request.setCharacterEncoding("utf-8"); String hy=request.getParameter("hy"); if(hy.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 >
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<% request.setCharacterEncoding("utf-8");%>
<h1> 登录失败</h1>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML > <html> <head> <title>My JSP 'index.jsp' starting page</title> </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("index1.jsp").forward(request, response); } else { request.getRequestDispatcher("index2.jsp").forward(request, response); } %> </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"%>
<html>
<head>
</head>
<body>
<form action="two.jsp" method="post">
<input type="text" name="text"/>
<input type="submit" value="提交"/>
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> </head> <body> <% String text = request.getParameter("text"); int n = Integer.parseInt(text); for (int i = 0; i < n; i++) { out.print("欢迎" + "<br>"); } %> </body> </html>
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