java-6 - what's a good alternative to Java7 WatchService?

Question

i need to pick a frameWork similar to watch service available on Java7 . what's a good alternative framework t to track changes on file System .

thanks in advance

Answer 1

您可以使用 JNotify 事件库。它允许 java 应用程序监听文件系统事件，例如创建、修改、重命名、删除。

通知链接

Answer 2

如果你使用 nodeJS。 Chokidar非常有趣。node.js fs.watch / fs.watchFile 的简洁包装器。

var chokidar = require('chokidar');

var watcher = chokidar.watch('file or dir', {ignored: /[\/\\]\./, persistent: true});

watcher
  .on('add', function(path) {console.log('File', path, 'has been added');})
  .on('addDir', function(path) {console.log('Directory', path, 'has been added');})
  .on('change', function(path) {console.log('File', path, 'has been changed');})
  .on('unlink', function(path) {console.log('File', path, 'has been removed');})
  .on('unlinkDir', function(path) {console.log('Directory', path, 'has been removed');})
  .on('error', function(error) {console.error('Error happened', error);})

// 'add', 'addDir' and 'change' events also receive stat() results as second argument.
// http://nodejs.org/api/fs.html#fs_class_fs_stats
watcher.on('change', function(path, stats) {
  console.log('File', path, 'changed size to', stats.size);
});

watcher.add('new-file');
watcher.add(['new-file-2', 'new-file-3']);

// Only needed if watching is persistent.
watcher.close();

// One-liner
require('chokidar').watch('.', {ignored: /[\/\\]\./}).on('all', function(event, path) {
  console.log(event, path);
});

Answer 3

使用commonIO

开始看： http ://andreinc.net/2012/06/30/writing-a-simple-file-monitor-in-java-using-commons-io/