Js+jsp method of implementing static page Access Count via img tag _javascript tips

The example of this article describes the Js+jsp method of implementing static page access count through the IMG tag invocation. Share to everyone for your reference, specific as follows:

Test page: test.html

<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" >
 
 

Statistical procedure: pv.jsp:

Assume the deployment location is 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)%> <%! /** * Write Digital content * * @param number * @param filename * @return/public boolean writenumber (String
      , 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; /** * Read Digital content * * @param filename * @return/public int readnumber (String filename) {int Numbe
    R = 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;

 }%>

Basic idea:

Access static page, through the IMG tag specified SRC for Access statistics address, IMG tag to the statistical program to send a request to achieve statistics.
The statistics sample code uses files to record the number of accesses, and the actual project can record the database.

Key code:

Copy Code code as follows:

<script type= "Text/javascript" >document.write (" ");</script>

I hope this article will help you with JavaScript programming.