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> </head> <body bgcolor="#ffccff"> <form action="computer.jsp"method="post name=from"> <p style="font-famiy:宋体;font-size:18;color:blue"> 输入运算数,选则运算符号:<br> <input type=text name="numberOne"size=6/> <select name="operator"> <option selected="selected"value="+">加 <opting selected="selected"value="-">减 <option selected="selected"value="/">除</select> <input type=text name="numberTwo"size=6/> <br><input type="submit"name="submit"value="提交"/> </from> </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"> <%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("请输入数字字符"); }%> <br> </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>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</title> </head> <body> <form action="second.jsp"> 输入一个数:<input type="text" name="shu"><br> <input type="submit" value="提交"> </form> </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> <% String shu=request.getParameter("shu"); int n=Integer.parseInt(shu); for(int i=0;i<n;i++){ out.print("欢迎"+"!! "); } %> </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"%> <html> <head> <title>first</title> </head> <body> <form action="panduan.jsp"> 账号:<input type="text" name="account"><br> 密码:<input type="password" name="password"><br> <input type="submit" value="登录"> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>second</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String account = request.getParameter("account"); String password=request.getParameter("password"); %> <form action="three.jsp"> 登录成功!<br> 请输入用户名:<input type="text" name="uname"> <input type="hidden" name="src1" value="<%=account%>" /> <input type="hidden" name="src2" value="<%=password%>" /> <input type="submit" value="提交"> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>three</title> </head> <body> <% String uname=request.getParameter("uname"); String src1=request.getParameter("src1"); String src2=request.getParameter("src2"); %> <%=uname %>用户信息如下:<br> 账号:<%=src1 %><br> 密码:<%=src2 %> </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 account=request.getParameter("account"); String password=request.getParameter("password"); if(account.equals(password)){ request.getRequestDispatcher("second.jsp").forward(request,response); }else{ out.print("登录失败!请重试"); } %> </body> </html>