jsp第7周作业
1.教材P78-79 例4-9
<%@ 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 'demo4.9.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> <% double price = 56.56; %> <p style="font-family:宋体;font-size:36;color:blue"> 商品编号A0132,价格99 <a href="demo4.9receive.jsp?id=A0132&price=56.56">购买</a><br> 商品编号A0133,价格<%=price%> <a href="demo4.9receive.jsp?id=A0133&price=<%=price%> ">购买</a> </p> </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 'demo4.9receive.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=#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> <a href="demo4.9.jsp">返回购买页</a> </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> </head> <body> <form action="week7_02.jsp" method=post name=form> 输入运算数，选择运算符：<br> <input type=text name="numberOne" size=6 /> <select name="op"> <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> </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> <% request.setCharacterEncoding("utf-8"); String numberOne=request.getParameter("numberOne"); String numberTwo=request.getParameter("numberTwo"); String op=request.getParameter("op"); if(numberOne==null||numberOne.length()==0){ response.sendRedirect("week7.jsp");/* 获取方法 */ return; } else if(numberTwo==null||numberTwo.length()==0){ response.sendRedirect("second01.jsp"); return; } try{ double a=Double.parseDouble(numberOne); double b=Double.parseDouble(numberTwo); double r=0; if(op.equals("+")) r=a+b; else if(op.equals("-")) r=a-b; else if(op.equals("*")) r=a*b; else if(op.equals("/")) r=a/b; out.print(a+" "+op+" "+b+"-"+r); } catch(Exception e){ out.println("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>
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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>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</title> </head> <body> <form action="second.jsp"> 输入一个数：<input type="text" name="shu"><br> <input type="submit" value="提交"> </form> </body> </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 shu=request.getParameter("shu"); int n=Integer.parseInt(shu); for(int i=0;i<n;i++){ out.print("欢迎"+"!! "); } %> </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"%> <html> <head> <title>first</title> </head> <body> <form action="panduan.jsp"> 账号：<input type="text" name="account"><br> 密码：<input type="password" name="password"><br> <input type="submit" value="登录"> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>second</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String account = request.getParameter("account"); String password=request.getParameter("password"); %> <form action="three.jsp"> 登录成功！<br> 请输入用户名：<input type="text" name="uname"> <input type="hidden" name="src1" value="<%=account%>" /> <input type="hidden" name="src2" value="<%=password%>" /> <input type="submit" value="提交"> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>three</title> </head> <body> <% String uname=request.getParameter("uname"); String src1=request.getParameter("src1"); String src2=request.getParameter("src2"); %> <%=uname %>用户信息如下：<br> 账号:<%=src1 %><br> 密码:<%=src2 %> </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> <% request.setCharacterEncoding("utf-8"); String account=request.getParameter("account"); String password=request.getParameter("password"); if(account.equals(password)){ request.getRequestDispatcher("second.jsp").forward(request,response); }else{ out.print("登录失败！请重试"); } %> </body> </html>
