第七次jsp
1.教材P78-79 例4-9
<body> <%double price=98.78; %> <p style="font-family: 宋体;font-size: 36;color: red"> 商品编号A1001,价格8765 <a href="show1.jsp?id=A1001&price=98.78 ">购买</a><br> 商品编号A1002,价格<%=price%> <a href="show1.jsp?id=A1002&price=<%=price%>" >购买</a> </p> </body>
<body> <% String id=request.getParameter("id"); String price=request.getParameter("price"); %> 商品编号<%=id%><br> 商品价格<%=price%> </body>
2.教材P97 实验2
<body> <form action="show2.jsp" method=post name="from"> <p>输入运算的数,选择运算符:<br> <input type=text name="one"/> <select name="operator"> <option value="+">加 <option value="-">减 <option value="*">乘 <option value="/">除 </select> <input type=text name="two"/> <br><input type="submit"name="submit" value="提交" size="4"/> </form> </body>
<body> <% String a1=request.getParameter("one"); String b1=request.getParameter("two"); String operator=request.getParameter("operator"); double a=Double.parseDouble(a1); double b=Double.parseDouble(b1); double s=0; if(operator.equals("+")) s=a+b; else if(operator.equals("-")) s=a-b; else if(operator.equals("*")) s=a*b; else if(operator.equals("/")) s=a/b; out.print("运算结果是:"+s); %> </body>
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”。
<head> <script type="text/javascript"> function yanzheng(){ if(zhuce.user.value==""){ alert("账号不能为空"); return; } if(zhuce.pass.value==""){ alert("密码不能为空"); return; } zhuce.submit(); } </script> </head> <body> <form action="show1.jsp" method="post" name="zhuce"> 用户名 <input type="text" name="user" value="" /><br> 登录密码 <input type="password" name="pass" value="" /><br> 是否注册为会员:<br> 是<input type="checkbox" name="vip" value="11"> 否<input type="checkbox" name="vip" value=""><br> <input type="button" value="登录" onclick="yanzheng()"> </form> </body>
<body> <% request.setCharacterEncoding("utf-8"); String user=request.getParameter("user"); String pass=request.getParameter("pass"); String vip=request.getParameter("vip"); if(vip.equals("")){ if(user.equals(pass)){ request.getRequestDispatcher("ok.jsp").forward(request, response);} else request.getRequestDispatcher("no.jsp").forward(request, response); } else{ if(user.equals(pass)){ request.getRequestDispatcher("ok1.jsp").forward(request, response);} else request.getRequestDispatcher("no.jsp").forward(request, response); } %>
<body> 欢迎您注册为会员<br> 登录成功 </body>
<body> 登录成功 </body>
<body> 登录失败 </body>
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。
<body> <form action="show2.jsp" method="post" name="zhuce"> 输入一个数字N:<br> <input type="text" name="number" value="" /><br> <input type="submit" value="提交"> </form> </body>
<body> <% request.setCharacterEncoding("utf-8"); String a=request.getParameter("number"); int num=Integer.parseInt(a); for(int i=0;i<num;i++){ %> 欢迎<%} %> </body>
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
<body> <script> function lg() { if (form.user.value == "") { alert("用户名不能为空!"); form.user.focus(); return; } if (form.password.value == "") { alert("密码不能为空!"); form.password.focus(); return; } } </script> <form action="index2.jsp" method="post" name="form"> 账号:<input type="text" name="user"/><br> 密码:<input type="password" name="password"/><br> <input type="submit" value="登录"/> </form> </body>
<body> <% request.setCharacterEncoding("UTF-8"); String user=request.getParameter("user"); String password=request.getParameter("password"); if(user.equals(password)){ request.getRequestDispatcher("index2ok.jsp").forward(request, response); } else{ request.getRequestDispatcher("index2no.jsp").forward(request, response); } %> </body>
<body> <% request.setCharacterEncoding("UTF-8"); %> <h1> 登陆失败!</h1> </body>
<body> <% request.setCharacterEncoding("UTF-8"); String user=request.getParameter("user"); %> <h1> 登陆成功!</h1> <form action="index3.jsp" method="post" name="form"> 用户姓名:<input type="text" name="username"/><br> <input type="submit" value="提交"/><br> <input type="hidden" name="user" value="<%= user %>"/> </form> </body>
<body> <% request.setCharacterEncoding("UTF-8"); String user=request.getParameter("user"); String username=request.getParameter("username"); out.print("账号:"+user+"</br>"+"用户姓名:"+"   "+username); %> </body>