JSP第七周作业
1.教材P78-79 例4-9
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <% double price = 98.78; %> 商品编号 A1001,价格 8765 <a href="MyJsp.jsp?id=A1001&price=8765">购买</a><br> 商品编号 A1002,价格 <%=price %> <a href="MyJsp.jsp?id=A1002&price=<%=price %>">购买</a><br> </p> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'MyJsp.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String id=request.getParameter("id");
String price=request.getParameter("price");
%>
<b>商品编号：<%=id %><br>
商品价格：<%=price %>
</body>
</html>
2.教材P97 实验2
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<form action="MyJsp.jsp" method=post name=form>
输入运算数，选择运算符：<br>
<input type=text name="numberOne" size=6 />
<select name="op">
<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>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'MyJsp.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String numberOne=request.getParameter("numberOne");
String numberTwo=request.getParameter("numberTwo");
String op=request.getParameter("op");
if(numberOne==null||numberOne.length()==0){
response.sendRedirect("index.jsp");/* 获取方法 */
return;
}
else if(numberTwo==null||numberTwo.length()==0){
response.sendRedirect("index.jsp");
return;
}
try{
double a=Double.parseDouble(numberOne);
double b=Double.parseDouble(numberTwo);
double r=0;
if(op.equals("+"))
r=a+b;
else if(op.equals("-"))
r=a-b;
else if(op.equals("*"))
r=a*b;
else if(op.equals("/"))
r=a/b;
out.print(a+" "+op+" "+b+"-"+r);
}
catch(Exception e){
out.println("请输入数字字符");
}
%>
</body>
</html>
4.
index
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<script>
function lg() {
if (form.user.value == "") {
alert("账号不能为空!");
return;
}
if (form.password.value == "") {
alert("密码不能为空!");
return;
}
if (form.validationCode.value == "") {
alert("验证码不能为空，请输入验证码");
form.validationCode.focus();
return;
}
if (form.validationCode.value != form.validationCode1.value) {
alert("请输入正确的验证码");
form.validationCode.focus();
return;
}
form.submit();
}
</script>
<%
int intmethod1 = (int) ((((Math.random()) * 5)) + 1);
int intmethod2 = (int) ((((Math.random()) * 5)) + 1);
int intmethod3 = (int) ((((Math.random()) * 5)) + 1);
int intmethod4 = (int) ((((Math.random()) * 5)) + 1);
String intsum = intmethod1 + "" + intmethod2 + intmethod3
+ intmethod4;
%>
<form action="MyJsp.jsp" method="post" name="form">
用户名:<input type="text" name="user" /> <br>
密码：<input type="password" name="password" /><br>
验证码：<input type="text" name="validationCode"
onKeyDown="if(event.keyCode==13){form.submit.focus();}" size="6">
<input type="button" name="validationCode1" size="1"
value="<%=intsum%>"><br>
是否注册会员：<input type="radio" name="lg" value="是" />是
<input type="radio" name="lg" value="否" />否 <br>
<input type="submit" value="登录" onclick="yz()" />
<br>
</form>
</body>
</html>
</html>
MyJsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String user = request.getParameter("user") == null ? "" : request.getParameter("user");
String password = request.getParameter("password") == null ? "": request.getParameter("password");
if (user.equals(password)) {
request.getRequestDispatcher("M.jsp").forward(request, response);
} else {
request.getRequestDispatcher("E.jsp").forward(request, response);
}
%>
</body>
</html>
M
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'M.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<h1>登陆成功</h1>
<%
request.setCharacterEncoding("utf-8");
String lg=request.getParameter("lg");
if(lg.equals("是")){
out.print("欢迎您注册为会员");
}
%>
</body>
</html>
E
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'E.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<h1>登陆失败</h1>
<% request.setCharacterEncoding("utf-8");%>
</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"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<form action="MyJsp.jsp" method="post" name="form">
输入任意整数N：<input type="text" name="name" >
<input type="submit" value="提交">
</form>
</body>
</html>
MyJsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<%
request.setCharacterEncoding("UTF-8");
String name=request.getParameter("name");
int n=Integer.parseInt(name);
for(int i=0;i<n;i++){
out.print("欢迎"+"<br>");
}
%>
</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
index
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<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="MyJsp.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>
</html>
MyJsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<%
request.setCharacterEncoding("UTF-8");
String user=request.getParameter("user");
String password=request.getParameter("password");
if(user.equals(password)){
request.getRequestDispatcher("M.jsp").forward(request, response);
}
else{
request.getRequestDispatcher("E.jsp").forward(request, response);
}
%>
</body>
</html>
M
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<%
request.setCharacterEncoding("UTF-8");
String user=request.getParameter("user");
%>
<h1> 登陆成功！</h1>
<form action="index2.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>
</html>
E
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<%
request.setCharacterEncoding("UTF-8");
%>
<h1> 登陆失败！</h1>
</body>
</html>
index2
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<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>
</html>
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