第七周
1.教材P78-79 例4-9
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title></title>
</head>
<body>
<%
double price=98.78;
%>
商品编号 A1001,价格 8765
<a href="receive .jsp?id=A1001&price=8765">购买</a><br>
商品编号 A1002,价格 <%=price %>
<a href="receive .jsp?id=A1002&price=<%=price %>">购买</a><br>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
<title></title>
</head>
<body>
<p style="font-family: :宋体;font-size: 36;color:blue">
<%
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 %>
</p>
</body>
</html>
二、教材P97 实验2（计算器）
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>jsq1.jsp</title> </head> <body> <form action="jsq2.jsp" method="post"> <p style="font-family:宋体;font-size: 18"> 输入运算数并选择运算符：<br/><br/> <input type="text" name="shu1" size=6 /> <select name="operator"> <option selected="selected" value="+">加 <option value="-">减 <option value="*">乘 <option value="/">除 </select> <input type="text" name="shu2" size=6 /> <br/><br/> <input type="submit" name="submit" value="提交"/> </p> </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>jsq2.jsp</title>
</head>
<body>
<p style="font-family:宋体;font-size: 18">
<%String shu1=request.getParameter("shu1");
String shu2=request.getParameter("shu2");
String operator=request.getParameter("operator");
if(shu1==null||shu1.length()==0){
response.sendRedirect("jsq1.jsp");
return;
}else if(shu2==null||shu2.length()==0){
response.sendRedirect("jsq1.jsp");
return;
}
try{
double a=Double.parseDouble(shu1);
double b=Double.parseDouble(shu2);
double sum=0;
if(operator.equals("+"))
sum=a+b;
else if(operator.equals("-"))
sum=a-b;
else if(operator.equals("*"))
sum=a*b;
else if(operator.equals("/"))
sum=a/b;
out.print(a+""+operator+""+b+"="+sum);
}catch(Exception e){
out.print("请输入数字字符");
}
%>
</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）
<%@ 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("week7_05.jsp").forward(request, response); } else{ response.sendRedirect("week7_07.jsp"); } %> </body> </html>
<%@ 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="week7_04.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>
<%@ 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>
<%@ 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>
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”
<script type="text/javascript">
function validate(){
if(loginForm.uname.value==""&&loginForm.password.value==""){
alert("账号和密码都不能为空!");
return;
}
if(loginForm.uname.value==""){
alert("账号不能为空!");
return;
}
if(loginForm.password.value==""){
alert("密码不能为空!");
return;
}
loginForm.submit();
}
</script>
</head>
<body>
<form name="loginForm" action="3.test.jsp" method="post">
账号：<input type="text" name="uname"><br>
密码：<input type="password" name="password"><br>
验证码：<input type="text" name="yanzheng"><br>
输入下图中的字符，不区分大小写<br>
<img src="image/35452.png"> <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="button" value="登录" onClick="validate()">
</form>
</body>
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>
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。
<%@ 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>
<%@ 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>
<%@ 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 uname=request.getParameter("uname"); out.print("账号："+admin+"</br>"+"用户名称"+uname); %> </body> </html>
<%@ 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>
<%@ 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> 登录成功！！！！！！！ <% String admin=request.getParameter("admin"); %> <form action="ex03.jsp"> 用户名：<input type="text" name="uname" /> <input type="submit" value="提交"/> <input name="admin" type="hidden" value="<%= admin %>"> </form> </body> </html>
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