Question

我正在尝试实施JNotify。但是当我编译程序时，我得到了一些奇怪的错误消息。我从这个站点获取示例代码ttp：//jnotify.sourceforge.net/sample.html

作为信息，JNotify用于目录监控，这就是我的源代码的样子。

这是watch.java类的内容

import net.contentobjects.jnotify.JNotifyListener;
import net.contentobjects.jnotify.JNotify;


public class watching{

public void watching(String s) throws Exception {
    // path to watch
    String path = System.getProperty(s);

    // 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);
    }
    void print(String msg) {
      System.err.println(msg);
    }
  }
}

然后这是名为nowwatch.java的主类

public class nowwatch
{
    public static void main(String[] args) throws Exception 
    {
        System.out.println("Hello World!");
        watching hello = new watching();
        hello.watching("C:/Users/Raden/Documents/Downloads");
    }
}

但为什么错误会像这样？我已截屏错误，因此您可以点击此link

查看错误

你们有没有遇到过这种错误？任何帮助将不胜感激。感谢

Answer 1

JNotify肯定使用JNI与依赖于操作系统的通知API进行交互。看起来JNotify中有一个错误。您是否尝试过在SourceForge上的JNotify论坛上询问？

Answer 2

我们遇到了同样的问题。因为我们还是使用了JNA，所以我们只使用了这个框架中的FileMonitor示例。像魅力一样。

Answer 3

它要求提供jNotify.dll文件，确保已将该文件放在窗口或jre / bin或jdk / bin中。然后尝试它将开始工作。

JNotify中的错误异常访问冲突

3 个答案: