第七周作业
1.教材P78-79 例4-9
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title></title> </head> <body bgcolor="#ffccff"> <% double price=98.78; %> <p style="font-family: 宋体; font-size: 36px; color: blue"> 商品编号A1001,价格8765 <a href="example4_9_receive.jsp?id=A1001&price=8765">购买</a><br> 商品编号A1002，价格<%=price%> <a href="example4_9_receive.jsp?id=A1002&price=<%=price%>">购买</a> </p> </body> </html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title></title> </head> <body bgcolor="#EEEEFF"> <p style="font-family: 宋体; font-size: 36px; 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 contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title></title> </head> <body bgcolor="#ffccff"> <form action="computer.jsp" method="post" name="form"> <p style="font-family: 宋体; font-size: 18px; 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 </option> </select> <input type="text" name="numberTwo" size="6"/> <br><input type="submit" name="submit" value="提交"/> </form> </p> </body> </html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title></title> </head> <body bgcolor="#00ffff"> <p style="font-family: 宋体; font-size: 18px; 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(""); } %> </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 contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title></title> </head> <body > <form action="second.jsp" method="post"> <p style="font-family:宋体;font-size:18px;color:black"> 请输入数字：<input type="text" name="number" size=10><br> <input type="submit" name="submit" value="提交"> </form> </body> </html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title></title> </head> <body > <% request.setCharacterEncoding("utf-8"); String number = request.getParameter("number"); int a = Integer.parseInt(number); for (int i = 0; i < a; i++) { out.print("欢迎" + "<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）
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”。
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。
3，4，6题合成一道
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title></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> 密码: <input type="password" name="upwd"> <br> 是否注册为会员： <input type="checkbox" name="member" value="注册">注册 <input type="checkbox" name="member" value="不注册">不注册<br> <input type="button" value="登录" onClick="validate()"> </form> </body> </html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title></title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String upwd = request.getParameter("upwd"); if (uname.equals("admin") && upwd.equals("admin")) //跳转Ok页面 request.getRequestDispatcher("ok.jsp").forward(request, response); else //跳转no页面 request.getRequestDispatcher("no.jsp").forward(request, response); %> </body> </html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title></title> </head> <body > <h1>登陆成功！！</h1> <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String[] member = request.getParameterValues("member"); for (int i = 0; i < member.length; i++) { if (member[i].equals("注册")) { out.print("欢迎您注册为会员！"); } } %> <form action="third.jsp" method="post"> 用户名：<input type="text" name="username"><br> <br> <input type="submit" name="submit" value="提交"> <input type="hidden" name="uname" value="<%=uname%>"> </form> </body> </html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title></title> </head> <body > <h1>登陆失败！！</h1> <a href="jsSubmit.jsp">返回首页面</a> </body> </html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title></title> </head> <body > <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String username= request.getParameter("username"); out.print("账号：" + uname + "<br>" + "<br>"+"用户名：" + username); %> </body> </html>
