jsp第七次作业
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>
<title>My JSP 'Work1_main.jsp' starting page</title>
</head>
<body>
<%
double price = 98.78;
%>
<p style = "font-family:宋体;font-size:18;color:blue">
商品编号A1001,价格8765
<a href = "Work1_receive.jsp?id=A1001&price=8765">购买</a><br>
商品编号A1002,价格<%=price %>
<a href = "Work1_receive.jsp?id=A1002&price=<%=price %>>">购买</a>
</p>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'Work1_receive.jsp' starting page</title>
</head>
<body>
<p style = "font-family:宋体;font-size:18;color:blue">
<%
String id=request.getParameter("id");
String price=request.getParameter("price");
%>
商品编号:<%=id %><br>
商品价格:<%=price %>
</p>
</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>
<title>My JSP 'Work2_input.jsp' starting page</title>
</head>
<body bgcolor=#ffccff>
<form action="Work2_computer.jsp" method=post name=form>
<p style="font_family:宋体；font-size:18;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
</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"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'Work2_computer.jsp' starting page</title>
</head>
<body>
<%
String numberOne = request.getParameter("numberOne");
String numberTwo = request.getParameter("numberTwo");
String operator = request.getParameter("operator");
String submit = request.getParameter("submit");
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 c = 0;
if(operator.equals("+")){
c=a+b;
}else if(operator.equals("-")){
c=a-b;
}else if(operator.equals("*")){
c=a-b;
}else if(operator.equals("/")){
c=a/b;
}
out.print(a+""+operator+""+b+"="+c);
}catch(Exception e){
out.print("请输入数字字符");
}
%>
</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）
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'Work3_main.jsp' starting page</title>
</head>
<body>
<script>
function login() {
if (form.user.value == "") {
alert("账号不能为空!");
return;
}
if (form.password.value == "") {
alert("密码不能为空!");
return;
}
form.submit();
}
</script>
<form action="Work3_jump.jsp" method="post" name="form">
用户名:<input type="text" name="user" /> <br>
密码：<input type="password" name="password" /><br>
<input type="submit" value="登录" onclick="login()" />
<br>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'Work3_jump.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("Work3_ok.jsp").forward(request, response);
} else {
request.getRequestDispatcher("Work3_no.jsp").forward(request, response);
}
%>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'Work3_ok.jsp' starting page</title>
</head>
<body>
<% request.setCharacterEncoding("utf-8");%>
登录成功<br>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'Work3_no.jsp' starting page</title>
</head>
<body>
<% request.setCharacterEncoding("utf-8");%>
登录失败<br>
</body>
</html>
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”。
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'Work4_jump.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("Work4_ok.jsp").forward(request, response);
} else {
request.getRequestDispatcher("Work4_no.jsp").forward(request, response);
}
%>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'Work4_login.jsp' starting page</title>
</head>
<body>
<script>
function login() {
if (form.user.value == "") {
alert("账号不能为空!");
return;
}
if (form.password.value == "") {
alert("密码不能为空!");
return;
}
form.submit();
}
</script>
<form action="Work4_jump.jsp" method="post" name="form">
用户名:<input type="text" name="user" /> <br>
密码：<input type="password" name="password" /><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="login()" />
<br>
</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>
<title>My JSP 'Work4_no.jsp' starting page</title>
</head>
<body>
<% request.setCharacterEncoding("utf-8");%>
登录失败<br>
</body>
</html>
复制代码
复制代码
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'Work4_ok.jsp' starting page</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String lg=request.getParameter("lg");
if(lg.equals("是")){
out.print("欢迎您注册为会员");
}
%>
登录成功<br>
</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>
<title>My JSP 'Work5_main.jsp' starting page</title>
</head>
<body>
<form action="Work5_huanying.jsp" method="post">
<input type="text" name="num" />
<input type="submit" value="提交" />
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'Work5_huanying.jsp' starting page</title>
</head>
<body>
<%
String string=request.getParameter("num");
int i=string==null? -1:Integer.parseInt(string);
for(int j=0;j<i;j++){
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。
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'Work6_login.jsp' starting page</title>
</head>
<body>
<script>
function login() {
if (form.user.value == "") {
alert("账号不能为空!");
form.user.focus();
return;
}
if (form.password.value == "") {
alert('密码不能为空!');
form.password.focus();
return;
}
if(form.user.value==form.password.value){
form.submit();
}else{
alert('登陆失败');
form.password.focus();
return;
}
}
</script>
<form action="Work6_jump.jsp" method="post" name="form">
账号：<input type="text" name="admin" /> <br>
密码：<input type="password" name="password" /><br>
<input type="submit" value="登录" onclick="login()" />
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'Work6_login.jsp' starting page</title>
</head>
<body>
<script>
function login() {
if (form.user.value == "") {
alert("账号不能为空!");
form.user.focus();
return;
}
if (form.password.value == "") {
alert('密码不能为空!');
form.password.focus();
return;
}
if(form.user.value==form.password.value){
form.submit();
}else{
alert('登陆失败');
form.password.focus();
return;
}
}
</script>
<form action="Work6_jump.jsp" method="post" name="form">
账号：<input type="text" name="admin" /> <br>
密码：<input type="password" name="password" /><br>
<input type="submit" value="登录" onclick="login()" />
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'Work6_jump.jsp' starting page</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String admin = request.getParameter("admin");
String password = request.getParameter("password");
if (admin.equals(password)) {
request.getRequestDispatcher("Work6_ok.jsp").forward(request, response);
} else {
request.getRequestDispatcher("Work6_no.jsp").forward(request, response);
}
%>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'Work6_text.jsp' starting page</title>
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String admin=request.getParameter("admin");
String uname=request.getParameter("uname");
out.print("用户名："+uname+"<br>"+"账号："+admin);
%>
</body>
</html>
