JSP中实现网页访问统计的方法(3)

            out.close(); 
        } catch (IOException e) { 
            // TODO: handle exception  
            e.printStackTrace(); 
        } 
    } 
     
    //读文件的方法  
    public static long readFromFile(String filename){ 
        File file = new File(filename); 
        long count = 0; 
        if(!file.exists()){ 
            try { 
                file.createNewFile(); 
            } catch (IOException e) { 
                // TODO Auto-generated catch block  
                e.printStackTrace(); 
            } 
            write2File(filename, 0); 
        } 
        try{ 
            BufferedReader in = new BufferedReader(new FileReader(file)); 
            try{ 
                count = Long.parseLong(in.readLine()); 
            } 
            catch (NumberFormatException e) { 
                // TODO: handle exception  
                e.printStackTrace(); 
            } catch (IOException e) { 
                // TODO Auto-generated catch block  
                e.printStackTrace(); 
            } 
        } catch (FileNotFoundException e) {