import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.Timer;
import java.util.TimerTask;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.gmcc.kuchuan.MessageConstants;
/**
* 定時清理上傳文件(超過7天)
*
* @author Join
*
*/
public class DelUploadFileTimerTask {
private Log logger = LogFactory.getLog(DelUploadFileTimerTask.class);
private Timer timer;
private final static long SEVER_DAY = 7 * 1000 * 60 * 60 * 24;//7天轉換成毫秒
private final static String BACK_FILE_ROOT = "/data/www_back";// 服務器存儲備份文件根目錄
public DelUploadFileTimerTask() {
timer = new Timer();
timer.schedule(new RemindTask(), 0, // initial delay
SEVER_DAY); // subsequent rate 7天1次
logger.debug("DelUploadFileTimerTask is Started");
}
class RemindTask extends TimerTask {
public void run() {
delUploadFile();
// System.exit(0);
}
}
/**
* 清理上傳文件(7天)
*/
public void delUploadFile() {
ListDirectoryAndDelUploadFile(MessageConstants.FILE_ROOT);
}
/**
* 遍歷目錄文件和刪除超過時間的上傳文件(移動到備份目錄)
* @param path 根目錄
*/
public void ListDirectoryAndDelUploadFile(String path) {
File file = new File(path);
File[] files = file.listFiles();
for (File fl : files) {
if (fl.isDirectory()) {
ListDirectoryAndDelUploadFile(fl.toString());
} else {
// 刪除超過7天的文件
if (fl.lastModified() + SEVER_DAY < System.currentTimeMillis()) {
moveFile(fl.getAbsolutePath(), BACK_FILE_ROOT + File.separator +fl.getName());
}
}
}
}
/**
* 刪除文件
*
* @param filePathAndName
*/
public void delFile(String filePathAndName) {
try {
String filePath = filePathAndName;
filePath = filePath.toString();
File myDelFile = new File(filePath);
myDelFile.delete();
} catch (Exception e) {
logger.error("DelUploadFileTimerTask. Cleaning upload files. Delete file error." ,e);
e.printStackTrace();
}
}
/**
* 複製文件
*
* @param oldPath
* @param newPath
*/
public void copyFile(String oldPath, String newPath) {
try {
int bytesum = 0;
int byteread = 0;
File oldfile = new File(oldPath);
if (oldfile.exists()) { // 文件存在時
// 讀入原文件
InputStream inStream = new FileInputStream(oldPath);
FileOutputStream fs = new FileOutputStream(newPath);
byte[] buffer = new byte[1444];
while ((byteread = inStream.read(buffer)) != -1) {
bytesum += byteread; // 字節數 文件大小
// System.out.println(bytesum);
fs.write(buffer, 0, byteread);
}
inStream.close();
}
} catch (Exception e) {
logger.error("DelUploadFileTimerTask. Cleaning upload files. Copy file error." ,e);
e.printStackTrace();
}
}
/**
* 移動文件到指定路徑
*
* @param oldPath
* @param newPath
*/
public void moveFile(String oldPath, String newPath) {
copyFile(oldPath, newPath);
delFile(oldPath);
}
public static void main(String[] args) {
new DelUploadFileTimerTask();
}
}
定時器TimerTask:定時清理上傳文件
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