JSP第五次作业
1.教材P78-79 例4-9
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </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="example2.jsp?id=A1001&price=8765">购买</a><br> 商品编号A1002,价格<%=price %> <a href="example2.jsp?id=A1002&price=<%=price %>">购买</a> </p> </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 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>
</body>
</html>
2.教材P97 实验2
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'input.jsp' starting page</title>
</head>
<body bgcolor="#ffccff">
<form action="computer.jsp" method="post" name="form">
<p style="font-family:宋体;font-size=18;color=blue"></p>
输入运算数，选择运算符号:<br>
<input type="text" name="numberOne" size="6" value=56>
<select name="operator">
<option selected="selected" value="+">加
<option value="-">减
<option value="*">乘
<option value="/">除
</select> <input type="text" name="numberTwo" size="6" value=88 /> <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>
<title>My JSP 'computer.jsp' starting page</title>
</head>
<body bgcolor="cyan">
<p style="font-family:宋体;font-size:18;color:black">
<%
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
String numberOne=request.getParameter("numberOne");
String numberTwo=request.getParameter("numberTwo");
String operator=request.getParameter("operator");
if(numberOne==null||numberOne.length()==0){
response.sendRedirect("input.jsp");
return;
}else if(numberTwo==null||numberTwo.length()==0){
response.sendRedirect("input.jsp");
return;
}
try{
double a=Double.parseDouble(numberOne);
double b=Double.parseDouble(numberTwo);
double r=0;
if(operator.equals("+"))
r=a+b;
else if(operator.equals("-"))
r=a-b;
else if(operator.equals("*"))
r=a*b;
else if(operator.equals("/"))
r=a/b;
out.print(a+""+operator+""+b+"="+r);
}catch(Exception e){
out.print("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 PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<form action="Login1.jsp"method="post">
请输入账号:<input name="account"type="text"><br>
请输入密码:<input name="password"type="password"><br>
<input type="submit"value="登陆">
</form>
<br>
</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>
<% String account=request.getParameter("account");
String password=request.getParameter("password");
if(account.equals(password)){
response.sendRedirect("welcome.jsp");
}else{
out.print("登录错误");
}%>
</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>
<%out.print("登陆成功，欢迎来到本系统"); %> <br>
</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"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<form action="Login1.jsp"method="post">
请输入账号:<input name="account"type="text"><br>
请输入密码:<input name="password"type="password"><br>
是否注册会员
<input type="checkbox" name="huiyuan" value="yes">是
<input type="checkbox" name="huiyuan" value="no">否<br>
<input type="submit"value="登陆"><br>
</form>
<br>
</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>
<% String account=request.getParameter("account");
String password=request.getParameter("password");
String huiyuan=request.getParameter("huiyuan");
if(account.equals(password)){
out.print("注册成功");
}else if(account.equals(password)&&huiyuan.equals("yes"))
{out.print("欢迎您成为会员！");
}else if(account.equals(password)&&huiyuan.equals("no")) {
out.print("没有成为会员");
}else{
out.print("登录错误");}
%>
</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 'page.jsp' starting page</title>
</head>
<body>
<form action="page1.jsp" method="post" name="page0">
输入一个数字：<input type="number" name="number1"><br>
<input type="submit" value="提交" >
<input type="reset" value="重置">
</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 'page1.jsp' starting page</title>
</head>
<body>
<%
//设置编码
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
//获取数据
String number = request.getParameter("number1");
//转换数据类型
int n = Integer.parseInt(number);
//循环
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。（转发）request.getRequestDispacher.....forward
<%@ 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>
<body>
<script type="text/javascript">
function validate() {
if (loginForm.id.value == "") {
alert("账号不能为空");
return;
} else if (loginForm.mi.value == "") {
alert("密码不能为空");
return;
}
loginForm.submit();
}
</script>
<form name="loginForm" action="panduan.jsp" method="post">
请输入相同的账号密码 <br> 账号: <input type="text" name="id" value="请输入账号">
<br> 密码: <input type="password" name="mi" value="请输入密码">
<br> <input type="button" name="admir" value="登录"
onClick="validate()">
</form>
</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>
<body>
登录失败！
</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>
<body>
<%
request.setCharacterEncoding("utf-8");
String id = request.getParameter("id");
%>
<form action="zuihou.jsp" method="post">
请输入姓名: <input type="text" name="xingming" value=""> <input
type="submit" value="确定"> <input type="hidden" name="id"
value="<%=id%>" />
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
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>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String id = request.getParameter("id");
String mi = request.getParameter("mi");
if (id.equalsIgnoreCase(mi)) {
request.getRequestDispatcher("ok.jsp").forward(request,
response);
} else {
request.getRequestDispatcher("no.jsp").forward(request,
response);
}
%>
</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>
<body>
<%
request.setCharacterEncoding("utf-8");
String id = request.getParameter("id");
String name = request.getParameter("xingming");
out.print("用户姓名：" + name + "<br>" + "用户账号：" + zh);
%>
</body>
</html>
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