第七周作业
1.教材P78-79 例4-9
<%@ page contentType="text/html"%> <%@ page pageEncoding="utf-8"%> <html> <head> <title>My JSP 'index.jsp' starting page</title> </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="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> </p> </body> </html>
<%@ page contentType="text/html"%> <%@ page pageEncoding="utf-8"%> <html> <head> <title>My JSP 'index.jsp' starting page</title> </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 %> </b> </p> </body> </html>
2.教材P97 实验2
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ pagecontentType="text/html" %> <% 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 '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;coloe: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" value="提交"> </form> </body> </html> 复制代码
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ pagecontentType="text/html" %> <% 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 'input.jsp' starting page</title> </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("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; if(operator.equals("-")) r=a-b; if(operator.equals("*")) r=a*b; 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>
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"%> <% 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> <title>My JSP 'index.jsp' starting page</title> </head> <body> <script type="text/javascript"> function validate() { if (loginForm.uname.value == "") { alert("账号不能为空!"); return; } if (loginForm.upwd.value == "") { alert("密码不能为空!"); return; } loginForm.submit(); } </script> <form name="loginForm" action="2.jsp" method="post"> 用户名:<input type="text" name="uname"><br> 密码: <input type="password" name="upwd"> <br> <input type="button" 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> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String upwd = request.getParameter("upwd"); if (uname.equals(upwd)) request.getRequestDispatcher("3.jsp").forward(request, response); else request.getRequestDispatcher("4.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> <title>My JSP '3.jsp' starting page</title> </head> <body bgcolor=#ffccff> <p>登录成功！</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> <title>My JSP '4.jsp' starting page</title> </head> <body bgcolor=#EEEEFF> <p>登录失败！</p> </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"%> <% 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> <title>My JSP '5.jsp' starting page</title> </head> <script type="text/javascript"> function validate() { if (loginForm.uname.value == "") { alert("账号不能为空!"); return; } if (loginForm.upwd.value == "") { alert("密码不能为空!"); return; } loginForm.submit(); } </script> <form name="loginForm" action="6.jsp" method="post"> 用户名:<input type="text" name="uname"><br> 密码: <input type="password" name="upwd"> <br> 是否注册为会员：<input type="checkbox" name="member" value="注册">注册 <input type="checkbox" name="member" value="不注册">不注册<br> <input type="button" 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> <head> <title>My JSP '6.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String upwd = request.getParameter("upwd"); if (uname.equals(upwd)) request.getRequestDispatcher("7.jsp").forward(request, response); else request.getRequestDispatcher("8.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> <title>My JSP '7.jsp' starting page</title> </head> <p>登录成功！</p> <% request.setCharacterEncoding("utf-8"); String[] member = request.getParameterValues("member"); for (int i = 0; i < member.length; i++) { if (member[i].equals("注册")) { out.print("欢迎您注册为会员！"); } } %> </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> <title>My JSP '9.jsp' starting page</title> </head> <form action="10.jsp" method="post"> <p style="font-family:宋体;font-size:18;color:black"> 请输入数字：<input type="text" name="number" size=10><br> <br> <br> <input type="submit" name="submit" value="提交"> </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> <title>My JSP '10.jsp' starting page</title> </head> <% request.setCharacterEncoding("utf-8"); String number = request.getParameter("number"); int a = Integer.parseInt(number); for (int i = 0; i < a; 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"%> <% 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> <title>My JSP '11.jsp' starting page</title> </head> <script type="text/javascript"> function validate() { if (loginForm.account.value == "") { alert("账号不能为空!"); return; } if (loginForm.upwd.value == "") { alert("密码不能为空!"); return; } loginForm.submit(); } </script> <form name="loginForm" action="12.jsp" method="post"> 账号:<input type="text" name="account"><br> 密码: <input type="password" name="upwd"> <br> <input type="button" 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> <head> <title>My JSP '12.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String account = request.getParameter("account"); String password = request.getParameter("upwd"); if (account.equals(password)) request.getRequestDispatcher("13.jsp").forward(request, response); else request.getRequestDispatcher("14.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> <title>My JSP '13.jsp' starting page</title> </head> <p>登录成功！</p> <% request.setCharacterEncoding("utf-8"); String account = request.getParameter("account"); %> <form action="15.jsp" method="post"> 用户名：<input type="text" name="username"><br> <br> <input type="submit" name="submit" value="提交"> <input type="hidden" name="account" value="<%=account%>"> </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> <title>My JSP '14.jsp' starting page</title> </head> <p>登录失败！</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> <title>My JSP '15.jsp' starting page</title> </head> <% request.setCharacterEncoding("utf-8"); String account = request.getParameter("account"); String uname = request.getParameter("username"); out.print("账号：" + account + "<br>" + "<br>"+"用户名：" + uname); %> </body> </html>
