第七周任务
1.例题4.9
<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 ="xg.jsp?id=A1001&price=8765">购买</a><br>
商品编号A1002，价格<%= price%>
<a href ="xg.jsp?id=A1002&price=<%= price%>">购买</a></p>
</body>
<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 %>
</body>
2.实验2
<body bgcolor = #ffccff>
<form action="xs.jsp" >
<p style="font-family:宋体;font-size:20;color:bleak">
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> </p>
</body>
<body bgcolor = cyan>
<p style="font-family:宋体;font-size:20;color:blue">
<%
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");
}
%>
</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
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”。
<body> <script type="text/javascript"> function pass(){ 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 action="tz.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> 是否注册为会员：<input type="checkbox" name="zc" value="yes">注册 <input type="checkbox" name="zc" value="n">不注册<br> <input type="submit" value="登陆"> </form> </body> <body> <% request.setCharacterEncoding("utf-8"); String account=request.getParameter("account")==null? "" :request.getParameter("account"); String password = request.getParameter("password") == null ? "" : request.getParameter("password"); if(account.equals(password)){ request.getRequestDispatcher("ok.jsp").forward(request, response); }else{ request.getRequestDispatcher("no.jsp").forward(request, response); } %> </body> <body> <h1>登陆成功</h1> <% request.setCharacterEncoding("utf-8"); String zc=request.getParameter("zc"); if(zc.equals("yes")){ out.print("欢迎您注册会员"); } %> </body> <body> 登陆失败<br> </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="tj.jsp">
<input type="text" name="num" />
<input type="submit" value="提交" />
</form>
</body>
<body>
<%
String number=request.getParameter("num");
int i=Integer.parseInt(number);
for(int j=0;j<i;j++){
out.print("欢迎"+"<br>");
}
%>
</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。
<body> <script type="text/javascript"> function val() { if (loginForm.account.value == "") { alert("账号不能为空"); return; } else if (loginForm.pas.value == "") { alert("密码不能为空"); return; } loginForm.submit(); } </script> <form action="two.jsp"> 账号<input type="text" name="account"> 密码<input type="password" name="pas"> <input type="submit" value="登录" /> </form> </body> <body> <% request.setCharacterEncoding("utf-8"); String zh=request.getParameter("account"); %> <form action="three.jsp"> 用户名<input type="text" name="user"> <input type="submit" value="提交" > <input name="zh" type="hidden" value="<%=zh%>"> </form> </body> <body> <% request.setCharacterEncoding("utf-8"); String zh=request.getParameter("zh"); String yh=request.getParameter("user"); out.print("用户名"+yh+"账号"+zh); %> </body>
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