jsp第七周作业
1.教材P78-79 例4-9
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<%
double price=98.78;
%>
商品编号 A1001,价格 8765
<a href="first02.jsp?id=A1001&price=8765">购买</a><br>
商品编号 A1002,价格 <%=price %>
<a href="first02.jsp?id=A1002&price=<%=price %>">购买</a><br>
</body>
</html>
buy.jsp
<%@ 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 id=request.getParameter("id");
String price=request.getParameter("price");
%>
<b>商品编号：<%=id %><br>
商品价格：<%=price %>
</body>
</html>
2.教材P97 实验2
21.jsp
<%@ 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>
22.jsp
<%@ 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）
31.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<script type="text/javascript">
function login(){
if(logindo.admin.value==""){
alert("请输入账号");
return;
}
else if(logindo.pass.value==""){
alert("请输入密码");
return;
}
logindo.submit();
}
</script>
<form action="ex02.jsp" name ="logindo">
<p style="font-family: 宋体;font-size: 18; color:blue">
账号：
<input type="text" name="admin" size=6/>
密码：
<input type="password" name="pass" size=6/>
<br><input type="button" value="登录" onclick="login()"/>
</form>
</body>
</html>
32.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<%
String admin=request.getParameter("admin");
String pass=request.getParameter("pass");
if(admin.equals(pass)){
request.getRequestDispatcher("ok.jsp").forward(request, response);
}
else{
response.sendRedirect("no.jsp");
}
%>
</body>
</html>
no.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
登录失败！！！！！！！
</body>
</html>
ok,jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
登录成功！！！！！！！
</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="domain2.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="panduan()" />
<script type="text/javascript">
function panduan(){
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。
51.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<form action="index1.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>
52.jsp
<%@ 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 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。
61.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
</head>
<body>
<form action="dopage1.jsp" method="post" name="login">
账号:<input type="text" name="id" /><br>
密码:<input type="password" name="password" /><br>
<input type="button" value="登录" style="margin-left: 100px" onclick="panduan()" />
<script type="text/javascript">
function panduan(){
if(login.id.value==""){
alert("账号不能为空");
return;
}
if(login.password.value==""){
alert("密码不能为空");
return;
}
login.submit();
}
</script>
</form>
</body>
</html>
62.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String id=request.getParameter("id");
String password=request.getParameter("password");
if(id.equals(password)){
request.getRequestDispatcher("page2.jsp").forward(request, response);
}else{
out.print("登陆失败");
}
%>
</body>
</html>
63.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String name = request.getParameter("id");
%>
登录成功到页面2！！！
<form action="page3.jsp" method="post">
用户姓名<input type="text" name="uname" /><br>
<input type="submit" value="提交" />
<input type="hidden" name="src" value="<%=name%>" />
</form>
</body>
</html>
64.jsp
<%@ 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 'page3.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>
<%
request.setCharacterEncoding("utf-8");
String src = request.getParameter("src");
String name = request.getParameter("uname");
%>
账号：<%=src%><br>
姓名：<%=name%>
</body>
</html>
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