第七次作业
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>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body bgcolor="#ffccff">
<%
double price = 97.78;
%>
<p style="font-family:宋体;font-size:36;color:blue">
商品编号 A1001,价格 8765 <a href="MyJsp.jsp?id=A1001&price=8765">购买</a><br>
商品编号A1002,价格<%=price%>
<a href="MyJsp.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>
<title>My JSP 'MyJsp.jsp' starting page</title>
</head>
<body bgcolor="#EEEEEE">
<p style="font-family:宋体;font-size:36;color:blue">
<%
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
String id=request.getParameter("id");
String price=request.getParameter("price");
%>
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"%> <% 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 'index.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=cyan> <p style ="font-family:宋体;font-size:18;color:black"> <% String numberOne=request.getParameter("numberOne"); String numberTwo=request.getParameter("numberTwo"); String operator=request.getParameter("operator"); if(numberOne==null||numberOne.length()==0){ response.sendRedirect("MyJsp.jsp"); return; } else if(numberTwo==null||numberTwo.length()==0){ response.sendRedirect("MyJsp.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.println("请输入数字字符"); } %> </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 'MyJsp.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> <form action="index.jsp"method=post name=form> <p style="font-family:宋体;font-size:18;color:blue"> 输入运算数，选择运算符号：<br> <input type=text name="numberOne"size=6/> <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/> <br><input type="submit"name="submit"value="提交"/> </form> </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>
<title>My JSP 'login.jsp' starting page</title>
</head>
<body>
<%
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 name="loginForm" action="target.jsp" method="post">
请输入账号：<input type="text" name="account"> <br>
请输入密码：<input type="password" name="password"> <br>
验证码：<input type="text" name="validationCode" onKeyDown="if(event.keyCode==13){loginForm.submit.focus();}" size="6">
<input type="button" name="validationCode1" size="1" value="<%=intsum%>" /><br>
是否注册会员：<input type="radio" name="sf" value="是" />是
<input type="radio" name="sf" value="否" />否<br>
<input type="button" value="登录" onClick="validate()">
</form>
<script type="text/javascript">
function validate(){
if(loginForm.account.value==""){
alert("账号不能为空!");
return;
}
if(loginForm.password.value==""){
alert("密码不能为空!");
return;
}
if (loginForm.validationCode.value == "") {
alert("验证码不能为空，请输入验证码");
loginForm.validationCode.focus();
return;
}
if (loginForm.validationCode.value != loginForm.validationCode1.value) {
alert("请输入正确的验证码");
loginForm.validationCode.focus();
return;
}
loginForm.submit();
}
</script>
</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 'target.jsp' starting page</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String uname = request.getParameter("account");
String upwd = request.getParameter("password");
if (uname.equals("admin") && upwd.equals("admin"))
request.getRequestDispatcher("succes.jsp").forward(request,
response);
else
request.getRequestDispatcher("fail.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> <head> <base href="<%=basePath%>"> <title>My JSP 'succes.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> <h1>登录成功！！！！</h1> <% request.setCharacterEncoding("utf-8"); String sf=request.getParameter("sf"); if(sf.equals("是")){ out.print("欢迎您注册为会员"); } %> </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 'fail.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> <h1>登陆失败！！！</h1> </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"%> <% 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 'a.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> <form action="b.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"%> <% 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 'b.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"); response.setCharacterEncoding("UTF-8"); String number = request.getParameter("number1"); int n = Integer.parseInt(number); 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.getRequestDispatcher.....forward (request,response)
<%@ 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 'a.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> <form action="b.jsp" method="post" name="zero"> <p> <span>账号：</span> <input type="text" name="account" > </p> <p> <span>密码：</span> <input type="password" name="pwd" > </p> <p> <input type="submit" value="提交"> <input type="reset" value="重置"> </p> </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> <head> <base href="<%=basePath%>"> <title>My JSP 'b.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 account=request.getParameter("account"); String pwd=request.getParameter("pwd"); if(account.equals("admin")&&pwd.equals("admin")){ request.getRequestDispatcher("c.jsp").forward(request,response); }else{ response.sendRedirect("a.jsp"); } %> </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 'c.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> <form action="d.jsp" method="post" name="d"> 请输入姓名：<input type="text" name="name"><br> <input id="hidden_account" type="hidden" value="<%=request.getParameter("account")%>" /> <input type="submit" value="提交" onclick="doClick()"> </form> <script type="text/javascript"> function doClick() { document.forms[0].action = "d.jsp?account=" + document.getElementById("hidden_account").value; document.forms[0].submit(); } </script> </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 'd.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"); response.setCharacterEncoding("UTF-8"); String name=request.getParameter("name"); %> 用户的姓名：<%=name %><br> 用户的账号：<%= request.getParameter("account") %> </body> </html>
