第7次作业
1.教材P78-79 例4-9
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML > <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <% double price = 98.78; %> <p style="font-family: 宋体;font-style: 36;color: blue"> 商品编号A1001,价格8765 <a href="index1.jsp?id=A1001&price=8765">购买</a> 商品编号A1002,价格<%=price%> <a href="index1.jsp?id=A1002&price=<%=price%>">购买</a> </p> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML > <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <p style="font-family: 宋体;font-style: 36;color: blue"> <% String id = request.getParameter("id"); String price = request.getParameter("price"); %> <strong>商品编号：<%=id%><br> 商品价格：<%=price%> </strong> </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> </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"%> <% 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”
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> </head> <body> <script type="text/javascript"> function validate() { if (loginForm.account.value == "") { alert("账号不能为空！"); return; } else if (loginForm.password.value == "") { alert("密码不能为空！"); return; } loginForm.submit(); } </script> <form action="index2.jsp" name="loginForm" method="post"> 输入账号：<input name="account" type="text" /><br> 输入密码:<input name="password" type="password" /><br> 是否注册会员： <input type="checkbox" name="yes" value="1"/>注册 <input type="checkbox" name="yes" value="2"/>不注册<br> <input type="button" value="登录"onClick="validate()"> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> </head> <body> <h1>登录成功</h1> <% String []yes=request.getParameterValues("yes"); for(int i=0;i<yes.length;i++){ if(yes[i].equals("1")){ out.print("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"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <form action="index2.jsp" method="post" name="form"> 输入任意整数N：<input type="text" name="name" > <input type="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 'index2.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("UTF-8"); String name=request.getParameter("name"); int n=Integer.parseInt(name); 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"%> <% 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 'a.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> <form action="b.jsp" method="post" name="zero"> <p> <span>账号：</span> <input type="text" name="account" > </p> <p> <span>密码：</span> <input type="password" name="pwd" > </p> <p> <input type="submit" value="提交"> <input type="reset" value="重置"> </p> </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> <base href="<%=basePath%>"> <title>My JSP 'b.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> <% request.setCharacterEncoding("UTF-8"); String account=request.getParameter("account"); String pwd=request.getParameter("pwd"); if(account.equals("admin")&&pwd.equals("admin")){ request.getRequestDispatcher("c.jsp").forward(request,response); }else{ response.sendRedirect("a.jsp"); } %> </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 'c.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> <form action="d.jsp" method="post" name="d"> 请输入姓名：<input type="text" name="name"><br> <input id="hidden_account" type="hidden" value="<%=request.getParameter("account")%>" /> <input type="submit" value="提交" onclick="doClick()"> </form> <script type="text/javascript"> function doClick() { document.forms[0].action = "d.jsp?account=" + document.getElementById("hidden_account").value; document.forms[0].submit(); } </script> </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 'd.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> <% request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); String name=request.getParameter("name"); %> 用户的姓名：<%=name %><br> 用户的账号：<%= request.getParameter("account") %> </body> </html>
