我在java中创建了一个线程，它在1小时的时间间隔后不断检查窗口中的最近项目，并生成所有最近项目的.csv文件。此外，我有最近项目中所有文件的访问时间和文件夹位置。现在我想要做的是因为最近的项目不断更新自己，所以如果最近的项目中有一个新文件，它应该附加在已经制作的csv文件的末尾但是我被困在这里并且不知道如何做到这一点请帮助我，我的代码在这里
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*/
package record;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.attribute.BasicFileAttributeView;
import java.nio.file.attribute.BasicFileAttributes;
import java.nio.file.attribute.FileTime;
import static java.sql.DriverManager.println;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;
import sun.awt.shell.ShellFolder;
/**
*
* @author zeeshan
*/
public class Record
{
static String user=System.getProperty("user.name");
static String path1="C:\\Users\\"+user+"\\AppData\\Roaming\\Microsoft\\Windows\\Recent\\";
static String path2="C:\\Users\\Fa16Rcs028\\Dropbox\\Spring 17\\Special Topics In HCI\\Sir Aimal Project\\output.csv";
static PrintWriter pw;
static StringBuilder sb = new StringBuilder();
public void createcsv()throws IOException
{
File directory = new File(path1);
File[] fList = directory.listFiles();
pw = new PrintWriter(new File(path2));
sb.append("File/Folder Name");
sb.append(',');
sb.append("Access Time");
sb.append(',');
sb.append("File Location");
sb.append('\n');
for (int i=0;i<fList.length;i++)
{
String filename=fList[i].getName();
String actualfilename=filename.replace(".lnk", "");
ShellFolder sf = ShellFolder.getShellFolder(fList[i]);
ShellFolder target = sf.getLinkLocation();
if (target != null)
{
Path p = Paths.get(path1+filename);
BasicFileAttributes view= Files.getFileAttributeView(p, BasicFileAttributeView.class).readAttributes();
FileTime fileTime=view.creationTime();
sb.append(actualfilename);
sb.append(',');
sb.append(new SimpleDateFormat("dd/MM/yyyy HH:mm:ss").format((fileTime.toMillis())));
sb.append(',');
sb.append(target.getAbsolutePath());
sb.append('\n');
}
}
pw.write(sb.toString());
pw.close();
}
public static class maintainrecord extends Thread
{
@Override
public void run()
{
File directory = new File(path1);
File[] fList = directory.listFiles();
for (File fList1 : fList) {
try {
String filename = fList1.getName();
String actualfilename=filename.replace(".lnk", "");
Path p = Paths.get(path1+filename);
BasicFileAttributes view= Files.getFileAttributeView(p, BasicFileAttributeView.class).readAttributes();
FileTime fileTime=view.creationTime();
String time=new SimpleDateFormat("dd/MM/yyyy HH:mm:ss").format((fileTime.toMillis())).toString();
String line = "";
String cvsSplitBy = ",";
try (BufferedReader br = new BufferedReader(new FileReader(path2)))
{
while ((line = br.readLine()) != null)
{
String[] record = line.split(cvsSplitBy);
String name=record[0];
String checktime=record[1];
if(actualfilename.equals(name) && !time.equals(checktime))
{
br.close();
pw = new PrintWriter(new File(path2));
sb.append(actualfilename);
sb.append(',');
sb.append(actualfilename);
sb.append(',');
}
}
}
}catch (IOException ex)
{
Logger.getLogger(Record.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
}
public static void main(String[] args) throws IOException
{
Record r=new Record();
r.createcsv();
Thread zeeshan=new Thread(new maintainrecord());
zeeshan.start();
Thread.sleep(600000);
}
}