java - 如何在 java 和 servlet 中按天计算网站点击率..？

Question

我有如下要求显示网站访问者数量:

1. 访客总数
2. 当天的访客总数。

我已经完成了第一个要求。如何在每天的基础上实现第二个..？

这里是 Servlet 代码:

   public class HitCounterServlet extends HttpServlet {

     String fileName = "D://hitcounter.txt";
     long hitCounter;

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    readFile();
    updateHitCounterFile();
    HttpSession usersession = request.getSession();
    usersession.setAttribute("HITCOUNTER", hitCounter);
}

private void updateHitCounterFile() throws IOException {

    /**
     * Here I am increasing counter each time this HitCounterServlet is called. 
     * I am updating hitcounter.txt file which store total number of visitors on website.
     * Now I want total number of visitor on per day basis. 
    */

    hitCounter = hitCounter + 1;

    // read and update into file
    File file = new File(fileName);

    // if file doesnt exists, then create it
    if (!file.exists()) {
        file.createNewFile();
    }

    FileWriter fw = new FileWriter(file.getAbsoluteFile());
    BufferedWriter bw = new BufferedWriter(fw);
    bw.write(Long.toString(hitCounter));
    bw.close();
}

public void readFile() {
    BufferedReader br = null;
    String temp = "";
    try {
        br = new BufferedReader(new FileReader(fileName));
        while ((temp = br.readLine()) != null) {
            hitCounter = Long.parseLong(temp);
        }
        System.out.println("HIT Counter : " + hitCounter);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (br != null) {
            try {
                br.close();
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
    }
 }
}

Answer 1

您应该使用数据库并根据当天更新计数器。

喜欢

Counter   Date
444       10-23-1998
555       10-24-1998

或者为当前日期文件创建单独的文件当前日期文件名，如 10-23-1998.txt 并更新当天的计数器。希望对您有所帮助。