简单的正则表达式在JS中的使用

最新推荐文章于 2025-05-30 22:28:00 发布

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#正则表达式 #stylesheet #string #html #jsp #path

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本文介绍了一种使用正则表达式进行敏感词过滤的方法，并通过多个实例展示了如何利用正则表达式实现文本匹配，包括简单匹配、分组匹配及用户输入验证等。

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1. 对敏感字符的过滤

<%@ 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 'filter.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">  </head> <mce:script type="text/javascript"></mce:script> <body> This is my JSP page. <br> </body> </html>

2. 一些简单的匹配例子：

<%@ 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 '2.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">  </head> <mce:script type="text/javascript"></mce:script> <body> This is my JSP page. <br> </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 '3.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">  </head> <mce:script type="text/javascript"></mce:script> <body> <form action="" name="form1"> <center> <p> 用户名合法性检测程序 </p> <p> 规则:数字或英文字符串+数字 </p> <input type="text" name="username" value=""></input> <input type="button" value="匹配" onclick="check()"/> </center> </form> </body> </html>