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>