我的應用程序偵聽某個目錄,它是子目錄。爲了收聽目錄我使用JNotify。在目錄應用程序上創建新文件時,會檢查文件並以某種方式處理它。以下是代碼:加速Java應用程序
import net.contentobjects.jnotify.JNotify;
import net.contentobjects.jnotify.JNotifyListener;
public class JNotifyDemo {
public void sample() throws Exception {
// path to watch
//String path = System.getProperty("user.home");
String path = "/folder";
System.out.println(path);
// watch mask, specify events you care about,
// or JNotify.FILE_ANY for all events.
int mask = JNotify.FILE_CREATED
| JNotify.FILE_DELETED
| JNotify.FILE_MODIFIED
| JNotify.FILE_RENAMED;
// watch subtree?
boolean watchSubtree = true;
// add actual watch
int watchID = JNotify.addWatch(path, mask, watchSubtree, new Listener());
// sleep a little, the application will exit if you
// don't (watching is asynchronous), depending on your
// application, this may not be required
Thread.sleep(1000000);
// to remove watch the watch
boolean res = JNotify.removeWatch(watchID);
if (!res) {
// invalid watch ID specified.
}
}
class Listener implements JNotifyListener {
public void fileRenamed(int wd, String rootPath, String oldName,
String newName) {
print("renamed " + rootPath + " : " + oldName + " -> " + newName);
}
public void fileModified(int wd, String rootPath, String name) {
print("modified " + rootPath + " : " + name);
}
public void fileDeleted(int wd, String rootPath, String name) {
print("deleted " + rootPath + " : " + name);
}
public void fileCreated(int wd, String rootPath, String name) {
print("created " + rootPath + " : " + name);
//check file whether it is xml or not
//validate xml
//do some internal processing of file
// and do other jobs like inserting into database
}
void print(String msg) {
System.err.println(msg);
}
}
public static void main(String[] args) throws Exception {
new JNotifyDemo().sample();
}
}
正如您從代碼中看到的,應用程序每次處理一個文件。任何建議加快這個應用程序就像使用線程或其他任何東西?
什麼需要加快?在知道它是否應該優化之前不要進行優化,以及應該優化哪些內容。 –
我在這裏看不到任何瓶頸,因爲你沒有對你的代碼做任何事情。它只是演示中的一個觀察者代碼。 – gigadot
也許'同步打印'?然後推遲消息隊列。 –