JSP第五次作业
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>
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