本文实例讲述了JS+JSP通过img标签调用实现静态页面访问次数统计的方法。分享给大家供大家参考，具体如下：
测试页面： test.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>test</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> this is a test page. <script type="text/javascript">document.write("<img src=http://127.0.0.1:8080/EasyCMS/pv.jsp border=0 width=0 height=0>");</script> </body> </html>
统计程序: pv.jsp：
假设部署位置为http://127.0.0.1:8080/EasyCMS/pv.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <%@page import="java.io.*"%> <% String path="/opt/test.txt"; writeNumber(String.valueOf(readNumber(path)+1),path); %> <%=readNumber(path) %> <%! /** * 写入数字内容 * * @param number * @param filename * @return */ public boolean writeNumber(String number, String filename) { try { FileOutputStream fos = new FileOutputStream(filename); OutputStreamWriter writer = new OutputStreamWriter(fos); writer.write(number); writer.close(); fos.close(); } catch (IOException e) { e.printStackTrace(); return false; } return true; } /** * 读取数字内容 * * @param filename * @return */ public int readNumber(String filename) { int number = 0; try { File file = new File(filename); if (file.exists()) { FileReader fr = new FileReader(file); BufferedReader br = new BufferedReader(fr); String contents = br.readLine(); if (contents != null && contents.length() > 0) { contents = contents.replaceAll("[^0-9]", ""); number = Integer.valueOf(contents); } br.close(); fr.close(); } } catch (IOException e) { e.printStackTrace(); } return number; } %>
基本思想:
访问静态页面时,通过img标签指定src 为访问统计的地址, img标签向统计程序发出请求,实现统计.
统计示例代码采用文件来记录访问次数,实际项目可以记录数据库.
关键代码:
复制代码 代码如下:<script type="text/javascript">document.write("<img src=http://127.0.0.1:8080/EasyCMS/pv.jsp border=0 width=0 height=0>");</script>
希望本文所述对大家JavaScript程序设计有所帮助。