jsp第七周作业
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> <title>My JSP 'index.jsp' starting page</title> </head> <body bgcolor = #000000> <% 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="id.jsp?id=A1001&price=8765">购买</a><br> 商品编号A1002，价格<%=price %> <a href="id.jsp?id=A1002&price=<%=price %>">购买</a><br> </p> </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 '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
input.jsp: <html> <head> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>???????</title> </head> <body> <form action="computer.jsp" method=post name=form> <p style="font-family:宋体;font-size:18;color: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" name="submit" value="提交"/> </form>> </body> </html>
computer.jsp: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>???????</title> </head> <body> <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; 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.println("请输入字符"); } %> </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> <script type="text/javascript"> function login(){ if(dologin.admin.value==""){ alert("请输入账号"); return; } else if(dologin.pass.value==""){ alert("请输入密码"); return; } dologin.submit(); } </script> <form action="curry.jsp" name ="dologin"> <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"%> <% 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> <% String admin=request.getParameter("admin"); String pass=request.getParameter("pass"); if(admin.equals(pass)){ request.getRequestDispatcher("ok.jsp").forward(request, response); } else{ response.sendRedirect("no.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> </head> <body> 登录成功！！！！！！！ </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> </head> <body> 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”。
login.jsp: <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>登录页面</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="dologin.jsp" method="post"> 用户名:<input type="text" name="uname" ><br> <br>密码: <input type="password" name="upwd" ><br> <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> <br><input type="button" value="登录" onClick="validate()"> <input type="reset" value="重置"> </form> </body> </html> ok.jsp: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>登录成功页面</title> </head> <body> <h1>登陆成功！！</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>
New.File.jsp: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>???????</title> </head> <body> <form action="NewFile1.jsp" name="logindo"> 请输入数字： <input type="text" name="number" size=6><br> <input type="submit" value="提交" /> </form> </body> </html> New.File1.jsp: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>???????</title> </head> <body> <% String number = request.getParameter("number"); int n = Integer.parseInt(number); 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"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <form action="J.jsp"> <input type="text" name="id" value="magic"/><br> <input type="password" name="password" value="magic"/><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> </head> <% String id=request.getParameter("id"); String password=request.getParameter("password"); if(id.equals(password)){ request.getRequestDispatcher("q.jsp").forward(request, response); }else{ response.sendRedirect("m.jsp"); } %> <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> 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> </head> <%String src=request.getParameter("id"); %> <body> 登录成功！<br> <form action="n.jsp"> 姓名<input type="text" name="name"/><br> <input type="submit" value="提交"/> <input type="hidden" name="src" value="<%= src %>"/> </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> <%String src=request.getParameter("src"); String name=request.getParameter("name"); %> 账号：<%=src %><br> 密码：<%=name %> </body> </html>
