【JavaWeb】JSP动作元素
2021/11/19 22:12:21
本文主要是介绍【JavaWeb】JSP动作元素，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！
文章目录
- 1.``动作元素
- 1.1示例
- 2.``动作元素
- 2.1示例
- 3书城JSP页面演示
1.<jsp:include>动作元素
在JSP 页面中，为了把其他资源的输出内容插入到当前JSP页面的输出内容中，JSP技术提供了<jsp:include>动作元素,<jsp:include>动作元素的具体语法格式如下所示。
<jsp:include page="relativeURL" flush="true lfalse"/>
在上述语法格式中，page属性用于指定被引入资源的相对路径;flush属性用于指定是否将当前页面的输出内容刷新到客户端,默认情况下，flush 属性的值为false。
1.1示例
新建include.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN ">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>include</title>
</head>
<body>
<% Thread.sleep(5000); %>
include 页面的中文--------->这个就是被包含页面。
</body>
</html>
新建dynamiclnclude.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>dynamiclnclude page</title>
</head>
<body>
dynamiclnclude.jsp内的中文
<br/>
<jsp:include page="include.jsp" flush="true"></jsp:include>
</body>
</html>
启动Tomacat服务器
2.<jsp:forward>动作元素
<jsp:forward>动作元素将当前请求转发到其他Web 资源(HIMiL贝山、JS 贝图和Servle等)，在执行请求转发之后的当前页面将不再执行，而是执行该元素指正的日杯贝面。其具体语法格式如下所示。
<jsp:forward page="relativeURL"/>
2.1示例
新建jspforward.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN ">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
转发到欢迎页面：
<jsp:forward page="welcome.jsp"></jsp:forward>
</body>
</html>
新建welcome.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>welcome page</title>
</head>
<body>
你好，欢迎进入首页，当前访问时间是：
<% out.print(new java.util.Date()); %>
</body>
</html>
启动tomcat服务器
3书城JSP页面演示
代码：
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>首页</title>
<link rel="stylesheet" href="css/main.css" type="text/css" />
<!-- 导入首页轮播图css和js脚本 -->
<link type="text/css" href="css/autoplay.css" rel="stylesheet" />
<script type="text/javascript" src="js/autoplay.js"></script>
</head>
<body class="main">
<!-- 1.网上书城顶部 start -->
<div id="divhead">
<table cellspacing="0" class="headtable">
<tr>
<td>
<a href="#">
<img src="images/logo.png" width="200" height="60" border="0" />
</a>
</td>
<td style="text-align:right">
<img src="images/cart.gif" width="26" height="23" style="margin-bottom:-4px" /> <a href="#">购物车</a>
| <a href="#">帮助中心</a>
| <a href="#">我的帐户</a>
| <a href="register.jsp">新用户注册</a>
</td>
</tr>
</table>
</div>
<!-- 网上书城顶部 end -->
<!--2. 网上书城菜单列表 start -->
<div id="divmenu">
<a href="#">文学</a>
<a href="#">生活</a>
<a href="#">计算机</a>
<a href="#">外语</a>
<a href="#">经管</a>
<a href="#">励志</a>
<a href="#">社科</a>
<a href="#">学术</a>
<a href="#">少儿</a>
<a href="#">艺术</a>
<a href="#">原版</a>
<a href="#">科技</a>
<a href="#">考试</a>
<a href="#">生活百科</a>
<a href="#" style="color:#FFFF00">全部商品目录</a>
</div>
<div id="divsearch">
<form action="#" id="searchform">
<table width="100%" border="0" cellspacing="0">
<tr>
<td style="text-align:right; padding-right:220px">
Search
<input type="text" name="textfield" class="inputtable" id="textfield" value="请输入书名"
onmouseover="this.focus();"
onclick="my_click(this, 'textfield');"
onBlur="my_blur(this, 'textfield');"/>
<a href="#">
<img src="images/serchbutton.gif" border="0" style="margin-bottom:-4px" onclick="search()"/>
</a>
</td>
</tr>
</table>
</form>
</div>
<!-- 网上书城菜单列表 end -->
<!-- 3.网上书城首页轮播图 start -->
<div id="box_autoplay">
<div class="list">
<ul>
<li><img src="ad/index_ad1.jpg" width="900" height="335" /></li>
<li><img src="ad/index_ad2.jpg" width="900" height="335" /></li>
<li><img src="ad/index_ad3.jpg" width="900" height="335" /></li>
<li><img src="ad/index_ad4.jpg" width="900" height="335" /></li>
<li><img src="ad/index_ad5.jpg" width="900" height="335" /></li>
</ul>
</div>
</div>
<!-- 网上书城首页轮播图 end -->
<!--4. 公告板和本周热卖 start -->
<div id="divcontent">
<table width="900px" border="0" cellspacing="0">
<tr>
<td width="497">
<img src="images/billboard.gif" width="497" height="38" />
<table cellspacing="0" class="ctl">
<tr>
<td width="485" height="29">
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</td>
</tr>
</table>
</td>
<td style="padding:5px 15px 10px 40px">
<table width="100%" border="0" cellspacing="0">
<tr>
<td>
<img src="images/hottitle.gif" width="126" height="29" />
</td>
</tr>
</table>
<table width="100%" border="0" cellspacing="0">
<tr>
<td style="width:80; text-align:center">
<a href="#">
<img src="bookcover/105.jpg" width="102" height="130" border="0" />
</a>
<br />
</td>
<td style="width:80; text-align:center">
<a href="#">
<img src="bookcover/106.jpg" width="102" height="130" border="0" />
</a>
<br />
</td>
</tr>
</table>
</td>
</tr>
</table>
</div>
<!-- 公告板和本周热卖 end -->
<!--5. 网上书城底部 start -->
<div id="divfoot">
<table width="100%" border="0" cellspacing="0" >
<tr>
<td rowspan="2" style="width:10%">
<img src="images/logo.png" width="195" height="50"
style="margin-left:175px" />
</td>
<td style="padding-top:5px; padding-left:50px">
<a href="#">
<font color="#747556"><b>CONTACT US</b></font>
</a>
</td>
</tr>
<tr>
<td style="padding-left:50px">
<font color="#CCCCCC">
<b>COPYRIGHT 2015 © BookStore All Rights RESERVED.</b>
</font>
</td>
</tr>
</table>
</div>
<!-- 网上书城底部 end -->
</body>
</html>
register.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>用户注册</title>
<link rel="stylesheet" href="css/main.css" type="text/css" />
<script type="text/javascript" src="js/form.js"></script>
</head>
<body class="main">
<!-- 1.网上书城顶部 start -->
<div id="divhead">
<table cellspacing="0" class="headtable">
<tr>
<td>
<a href="index.jsp">
<img src="images/logo.png" width="200" height="60" border="0" />
</a>
</td>
<td style="text-align:right">
<img src="images/cart.gif" width="26" height="23" style="margin-bottom:-4px" /> <a href="#">购物车</a>
| <a href="#">帮助中心</a>
| <a href="#">我的帐户</a>
| <a href="register.jsp">新用户注册</a>
</td>
</tr>
</table>
</div>
<!-- 网上书城顶部 end -->
<!--2. 网上书城菜单列表 start -->
<div id="divmenu">
<a href="#">文学</a>
<a href="#">生活</a>
<a href="#">计算机</a>
<a href="#">外语</a>
<a href="#">经管</a>
<a href="#">励志</a>
<a href="#">社科</a>
<a href="#">学术</a>
<a href="#">少儿</a>
<a href="#">艺术</a>
<a href="#">原版</a>
<a href="#">科技</a>
<a href="#">考试</a>
<a href="#">生活百科</a>
<a href="#" style="color:#FFFF00">全部商品目录</a>
</div>
<div id="divsearch">
<form action="#" id="searchform">
<table width="100%" border="0" cellspacing="0">
<tr>
<td style="text-align:right; padding-right:220px">
Search
<input type="text" name="textfield" class="inputtable" id="textfield" value="请输入书名"
onmouseover="this.focus();"
onclick="my_click(this, 'textfield');"
onBlur="my_blur(this, 'textfield');"/>
<a href="#">
<img src="images/serchbutton.gif" border="0" style="margin-bottom:-4px" onclick="search()"/>
</a>
</td>
</tr>
</table>
</form>
</div>
<!-- 网上书城菜单列表 end -->
<!-- 3.网上书城用户注册 start -->
<div id="divcontent" align="center">
<form action="registersuccess.jsp" method="post" onsubmit="return checkForm();">
<table width="850px" border="0" cellspacing="0">
<tr>
<td style="padding: 30px"><h1>新会员注册</h1>
<table width="70%" border="0" cellspacing="2" class="upline">
<tr>
<td style="text-align: right; width: 20%">会员邮箱：</td>
<td style="width: 40%">
<input type="text" class="textinput" id="email" name="email" onkeyup="checkEmail();"/>
</td>
<td colspan="2"><span id="emailMsg"></span><font color="#999999">请输入有效的邮箱地址</font></td>
</tr>
<tr>
<td style="text-align: right">会员名：</td>
<td><input type="text" class="textinput" id="username" name="username" onkeyup="checkUsername();"/>
</td>
<td colspan="2"><span id="usernameMsg"></span><font color="#999999">字母数字下划线1到10位, 不能是数字开头</font></td>
</tr>
<tr>
<td style="text-align: right">密码：</td>
<td><input type="password" class="textinput" id="password" name="password" onkeyup="checkPassword();"/></td>
<td><span id="passwordMsg"></span><font color="#999999">密码请设置6-16位字符</font></td>
</tr>
<tr>
<td style="text-align: right">重复密码：</td>
<td>
<input type="password" class="textinput" id="repassword" name="repassword" onkeyup="checkConfirm();"/>
</td>
<td><span id="confirmMsg"></span> </td>
</tr>
<tr>
<td style="text-align: right">性别：</td>
<td colspan="2">
<input type="radio" name="gender" value="男" checked="checked" /> 男
<input type="radio" name="gender" value="女" /> 女
</td>
<td> </td>
</tr>
<tr>
<td style="text-align: right">联系电话：</td>
<td colspan="2">
<input type="text" class="textinput"
style="width: 350px" name="telephone" />
</td>
<td> </td>
</tr>
<tr>
<td style="text-align: right">个人介绍：</td>
<td colspan="2">
<textarea class="textarea" name="introduce"></textarea>
</td>
<td> </td>
</tr>
</table>
<table width="70%" border="0" cellspacing="0">
<tr>
<td style="padding-top: 20px; text-align: center">
<input type="image" src="images/signup.gif" name="submit" border="0"/>
</td>
</tr>
</table>
</td>
</tr>
</table>
</form>
</div>
<!-- 网上书城用户注册 end -->
<!--4. 网上书城下方显示 start -->
<div id="divfoot" align="center">
<table width="100%" border="0" cellspacing="0" >
<tr>
<td rowspan="2" style="width:10%">
<img src="images/logo.png" width="195" height="50"
style="margin-left:175px" />
</td>
<td style="padding-top:5px; padding-left:50px">
<a href="#">
<font color="#747556"><b>CONTACT US</b></font>
</a>
</td>
</tr>
<tr>
<td style="padding-left:50px">
<font color="#CCCCCC">
<b>COPYRIGHT 2015 © BookStore All Rights RESERVED.</b>
</font>
</td>
</tr>
</table>
</div>
<!--4. 网上书城下方显示 start -->
</body>
</html>
registersuccess.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<center>
<font color="green" size="7">注册成功</font>
</center>
</body>
</html>
regDemo.jsp（由于字符编码问题，占时还没解决）
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title> ±íµ¥Ð£Ñé </title>
</head>
<body>
<h3>×¢²áÒ³Ãæ</h3>
<form action="registersuccess.jsp" method="get" onsubmit="return checkForm();" >
Óû§Ãû£º<input type="text" name="username" id="usernameId" onkeyup="checkName();"/>
<span id="usernameMsg"></span><br/><br/>
ÃÜÂ룺 <input type="password" name="password" id="passwordId" onkeyup="checkPassword();"/>
<span id="passwordMsg"></span><br/><br/>
ÊÖ»úºÅ£º<input type="text" name="phone" id="phoneId" onkeyup="checkPhone();" />
<span id="phoneMsg"></span><br/><br/>
<input type="submit" value="×¢²á" />
</form>
</body>
<script type="text/javascript">
/*±íµ¥Ð£Ñé*/
//1.¶¨ÒåÈ«¾Ö±äÁ¿ÓÃÀ´½ÓÊÕ±ê¼Ç¶ÔÏó
var usernameObj;
var passwordObj;
var phoneObj;
var usernameMsg;
var passwordMsg;
var phoneMsg;
//2.»ñÈ¡±ê¼Ç¶ÔÏó
window.onload=function(){
//2.1»ñÈ¡ÊäÈë¿Ø¼þµÄ±ê¼Ç¶ÔÏó
usernameObj = document.getElementById("usernameId");
passwordObj = document.getElementById("passwordId");
phoneObj = document.getElementById("phoneId");
//2.2 »ñÈ¡´íÎóÐÅÏ¢µÄ±ê¼Ç¶ÔÏó
usernameMsg = document.getElementById("usernameMsg");
passwordMsg = document.getElementById("passwordMsg");
phoneMsg= document.getElementById("phoneMsg");
}
//±íµ¥Ð£Ñé,ͨ¹ý·µ»Øtrue»òÕßflase À´¿ØÖÆ±íµ¥ÊÇ·ñÌá½»¡£
function checkForm(){
var usernameFlag= checkName();
var passwordFlag = checkPassword();
var phoneFlag = checkPhone();
return usernameFlag && passwordFlag && phoneFlag;
}
//3.УÑéÓû§Ãû
function checkName(){
//3.1»ñÈ¡Óû§Ãû
var value = usernameObj.value;
//3.2 ´´½¨ÕýÔò±í´ïʽÀ´Ð£ÑéÓû§Ãû
var regex=/^[a-zA-Z]\w{3,6}$/; // Óû§ÃûÒÔ²»·Ö´óСдµÄ×Öĸ¿ªÊ¼£¬°üº¬×Öĸ¡¢Êý×Ö¡¢Ï»®Ïߣ¬³¤¶È4-7λ
//3.3 УÑé
if(value==""){ // !value µÈͬÓÚ value==""
usernameMsg.innerHTML = "Óû§Ãû±ØÐëÌîд";
return false;
} else if( !regex.test(value)){
usernameMsg.innerHTML = "Óû§Ãû±ØÐëÒÔ×Öĸ¿ªÊ¼£¬²»Çø·Ö´óСд£¬°üº¬Êý×Ö¡¢×Öĸ¡¢Ï»®Ïߣ¬³¤¶È4-7λ";
return false;
}else {
usernameMsg.innerHTML ="";
return true;
}
}
// 4.УÑéÃÜÂë
function checkPassword(){
//4.1 »ñÈ¡Óû§ÊäÈëµÄÃÜÂë
var value = passwordObj.value;
//4.2 ´´½¨ÕýÔò±í´ïʽ
var regex = /^[a-zA-Z0-9]{3,6}$/;//ÃÜÂëÊÇ×ÖĸºÍÊý×Ö×é³É£¬³¤¶ÈÊÇ3-6λ
//4.3 УÑé
if(!value){
passwordMsg.innerHTML = "|ÃÜÂë²»ÄÜΪ¿Õ";
return false;
}else if(!regex.test(value)){
passwordMsg.innerHTML = "ÃÜÂëÊÇ×ÖĸºÍÊý×Ö×é³É£¬³¤¶ÈÊÇ3-6λ";
return false;
}else {
passwordMsg.innerHTML = "";
return true;
}
}
// 5.УÑéÊÖ»úºÅ
function checkPhone(){
//5.1 »ñÈ¡ÊÖ»úºÅ
var value = phoneObj.value;
//4.2 ´´½¨ÕýÔò±í´ïʽ
var regex = /^1[3|5|7|8][0-9]{9}$/;//ÊÖ»úºÅ¿ªÊ¼1£¬µÚ¶þλÊÇ3£¬»òÕß5£¬»òÕß7£¬»òÕß8£¬ºóÃæ9λÈÎÒâд
//4.3 УÑé
if(!value){
phoneMsg.innerHTML = "ÊÖ»úºÅΪ¿Õ";
return false;
}else if(!regex.test(value)){
phoneMsg.innerHTML = "ÊÖ»úºÅ·ûºÏ¹æ·¶";
return false;
}else {
phoneMsg.innerHTML = "";
return true;
}
}
</script>
</html>
运行效果：
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