JSP第五次上机作业
1.教材P78-79 例4-9
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title></title> </head> <body> <% 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="1.4-9-1.jsp?id=A1001&price=8765">购买</a><br> 商品编号 A1002，价格<%=price %> <a href="1.4-9-1.jsp?id=A1002&price=<%=price %>">购买</a> </p> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title></title> </head> <body> <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> 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></title> </head> <body> <form action="2.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 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> </p> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <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("2.97.jsp"); return; }else if(numberTwo==null||numberTwo.length()==0){ response.sendRedirect("2.97.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.print("请输入数字字符"); } %> </p> </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></title> <script type="text/javascript"> function validate(){ if(loginForm.uname.value==""&&loginForm.password.value==""){ alert("账号和密码都不能为空!"); return; } if(loginForm.uname.value==""){ alert("账号不能为空!"); return; } if(loginForm.password.value==""){ alert("密码不能为空!"); return; } loginForm.submit(); } </script> </head> <body> <form name="loginForm" action="3.test.jsp" method="post"> 账号：<input type="text" name="uname"><br> 密码：<input type="password" name="password"><br> 验证码：<input type="text" name="yanzheng"><br> 输入下图中的字符，不区分大小写<br> <img src="image/35452.png"> <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> <% String uname=request.getParameter("uname"); String password=request.getParameter("password"); String yanzheng=request.getParameter("yanzheng"); if(uname!=null&&password!=null&&uname.equals(password)&&yanzheng.equals("jcuv")){ request.getRequestDispatcher("3.ture.jsp").forward(request,response); }else{ request.getRequestDispatcher("3.false.jsp").forward(request,response); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>登录成功</title> </head> <body> <p style="font-family:宋体;font-size:25;color:blue">登录成功</p> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>登录失败</title> </head> <body> <p style="font-family:宋体;font-size:25;color:red">登录失败</p> </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></title> <script type="text/javascript"> function validate(){ if(loginForm.uname.value==""&&loginForm.password.value==""){ alert("账号和密码都不能为空!"); return; } if(loginForm.uname.value==""){ alert("账号不能为空!"); return; } if(loginForm.password.value==""){ alert("密码不能为空!"); return; } loginForm.submit(); } </script> </head> <body> <form name="loginForm" action="3.test.jsp" method="post"> 账号：<input type="text" name="uname"><br> 密码：<input type="password" name="password"><br> 验证码：<input type="text" name="yanzheng"><br> 输入下图中的字符，不区分大小写<br> <img src="image/35452.png"> <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>登录成功</title> </head> <body> <p style="font-family:宋体;font-size:25;color:blue">登录成功</p> <% String huiyuan=request.getParameter("huiyuan"); if(huiyuan.equals("yes")) out.print("欢迎您成为会员！"); %> </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"%> <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="5.t.jsp"> 输入一个数：<input type="text" name="shu"><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 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。（转发）request.getRequestDispacher.....forward
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>页面1</title> </head> <body> <form action="6.yy.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>判断登录</title> </head> <body> <% String account=request.getParameter("account"); String password=request.getParameter("password"); if(account.equals(password)){ request.getRequestDispatcher("6.ok.jsp").forward(request,response); }else{ out.print("登录失败！请重试"); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>页面2</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String account = request.getParameter("account"); String password=request.getParameter("password"); %> <form action="6.tt.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>页面3</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>
