JSP第七周作业
1.教材P78-79 例4-9
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>p78 4-9</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="ex4-9-.jsp?id=A1001&price=8765">购买</a><br> 商品编号A1002，价格<%=price %> <a href="ex4-9-.jsp?id=A1002&price=<%=price %>">购买</a><br> </p> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title></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"); %> 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"%> <html> <head> <title>p97-2</title> </head> <body bgcolor=#ffccff> <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>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>p97-2</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("p97.jsp"); return; } else if(numberTwo==null||numberTwo.length()==0){ response.sendRedirect("p97.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.println(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"%> <html> <head> <title>制作一个登陆表单</title> </head> <body> <script type="text/javascript"> function validate() { if (form.uname.value == "") { alert("账号不能为空！"); return; } if (form.upwd.value == "") { alert("密码不能为空！"); return; } form.submit(); } </script> <form name="form" action="do7.1.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"%> <html> <head> <title></title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname=request.getParameter("uname"); String upwd=request.getParameter("upwd"); if(uname.equals(upwd)) request.getRequestDispatcher("yes.jsp").forward(request,response); else request.getRequestDispatcher("no.jsp").forward(request,response); %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <h1>登陆失败！！</h1> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <h1>登陆成功！！</h1> </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> <title>制作一个登陆表单</title> </head> <body> <script type="text/javascript"> function validate() { if (form.uname.value == "") { alert("账号不能为空！"); return; } if (form.upwd.value == "") { alert("密码不能为空！"); return; } form.submit(); } </script> <form name="form" action="do7.4.jsp" method="post"> 用户名：<input type="text" name="uname"><br> 密码：<input type="password" name="upwd"><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="button" value="登录" onClick="validate()"> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title></title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname=request.getParameter("uname"); String upwd=request.getParameter("upwd"); if(uname.equals(upwd)) request.getRequestDispatcher("yes.jsp").forward(request,response); else request.getRequestDispatcher("no.jsp").forward(request,response); %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <h1>登陆成功！！</h1> <% String hy=request.getParameter("huiyuan"); if(hy.equals("yes")){ out.println("欢迎您注册为会员"); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <h1>登陆失败！！</h1> </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"%> <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 name="form" action="do7.5.jsp" method="post"> 输入数字N：<input type="text" name="number"><br> <input type="submit" value="提交" > </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <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> <% String number=request.getParameter("number"); double n=Double.parseDouble(number); for(int i=0;i<n;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.*" pageEncoding="utf-8"%> <html> <head> <title>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，</title> </head> <body> <form name="form" action="do7.6.jsp" method="post"> 用户名：<input type="text" name="uname"><br> 密码：<input type="password" name="upwd"><br> <input type="submit" value="登录" > </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <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("y2.jsp").forward(request,response); else request.getRequestDispatcher("no.jsp").forward(request,response); %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <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"); %> <form name="form" action="y3.jsp" method="post"> 请输入用户名：<input type="text" name="unameTwo"><br> <input type="hidden" name="upwdTwo" value="<%=upwd%>" /> <input type="submit" value="登录" > </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String unameTwo=request.getParameter("unameTwo"); String upwdTwo=request.getParameter("upwdTwo"); %> 用户账号：<%=unameTwo %><br> 用户密码:<%=upwdTwo %> </body> </html>
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