1.p78-p79的例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=#9370DB > <%double price=98.78; %> <p style="font-family:宋体;font-size:36;color:Thistle"> 商品编号A1001，价格8765 <a href="two.jsp?id=A1001&price=8765">购买</a><br> 商品编号A1002，价格<%=price %> <a href="two.jsp?id=A1002&price=<%=price %>">购买</a> </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 'two.jsp' starting page</title> </head> <body bgcolor=#FFB6C1> <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 %></b><br> 商品价格：<%=price %> </p> </body></html>
2.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>p79实验2计算器</title></head><body> <form action="three.jsp" method="post"> 输入运算数，选择运算符号<br> <br> <input type="text" name="d1" value="4"> <select name="fu"> <option>+</option> <option>-</option> <option>*</option> <option>/</option> </select> <input type="text" name="d2" value="23"><br> <br> <input type="submit" name="ti" 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>计算器</title></head><body> <% request.setCharacterEncoding("utf-8"); String d1 = request.getParameter("d1"); String d2 = request.getParameter("d2"); String fu = request.getParameter("fu"); if (d1 == null || d1.length() == 0) { response.sendRedirect("index.jsp"); return; } else if (d2 == null || d2.length() == 0) { response.sendRedirect("index.jsp"); return; } try { double a = Double.parseDouble(d1); double b = Double.parseDouble(d2); double r = 0; if (fu.equals("+")) r = a + b; else if (fu.equals("-")) r = a - b; else if (fu.equals("*")) r = a * b; else if (fu.equals("/")) r = a / b; out.print(a + "" + fu + "" + 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）
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>登录表单</title></head><body> <form action="four.jsp" method="post" name="form1"> 账号：<input type="text" name="name"><br> <br> 密码：<input type="password" name="password"><br> <br><input type="checkbox" name="vip" value="欢迎您注册为会员">是否注册为会员<br> <br> <input type="button" name="ti" value="提交" onclick="fu()"> </form> <script type="text/javascript"> function fu() { if (form1.name.value == "") { alert("账号不能为空"); return; } if (form1.password.value == "") { alert("密码不能为空"); return; } form1.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>第3题</title></head><body> <% request.setCharacterEncoding("utf-8"); String name = request.getParameter("name"); String password = request.getParameter("password"); String[] vip = request.getParameterValues("vip"); if (name.equals(password)) { out.println("登录成功"+"<br>");if(vip!=null){ out.println("欢迎注册为会员"); } } else { out.println("登录失败"); } %></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>欢迎</title></head><body> <form action="five.jsp" method="post"> 请输入一个数字：<br> <br> <input type="text" name="shu"><br> <br> <input type="submit" name="ti" 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>欢迎</title></head><body> <% request.setCharacterEncoding("utf-8"); String shu = request.getParameter("shu"); double a = Double.parseDouble(shu); for(int i=0;i<a;i++){ out.println("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.Enumeration" pageEncoding="utf-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title>6</title></head><body> <form action="one6-1.jsp" method="post"> 账号：<input type="text" name="name1" /><br> <br> 密码：<input type="password" name="password" /><br> <br> <input type="submit" value="登录" /> </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>第6题</title></head><body> <% request.setCharacterEncoding("utf-8"); String name1=request.getParameter("name1"); String password=request.getParameter("password"); if(name1.equals(password)){ request.getRequestDispatcher("two6-1.jsp").forward(request, response); } else{ request.getRequestDispatcher("one6-2.jsp").forward(request, response); } %></body></html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title>第6题</title></head><body>登录失败</body></html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title>第6题</title></head><body> <% request.setCharacterEncoding("utf-8"); String name1 = request.getParameter("name1"); %> <form action="two6-2.jsp" method="post"> 用户姓名：<input type="text" name="name2"><br> <br> <input type="submit" value="提交"><br> <br> <input type="hidden" name="name1" value="<%= name1 %>" /> </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>第6题</title></head><body> <% request.setCharacterEncoding("utf-8"); String name1 = request.getParameter("name1"); String name2 = request.getParameter("name2"); out.print("账号：" + name1 + "</br>" + "用户姓名:" + name2); %></body></html>
