扫描硬盘指定文件

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public class FileExtensionFileFilter implements FileFilter {private String extension;public FileExtensionFileFilter(String extension) {this.extension = extension;}/* * Pass the File if it has the extension. */public boolean accept(File file) {// Lowercase the filename for easier comparisonString lCaseFilename = file.getName().toLowerCase();return (file.isFile() && (lCaseFilename.indexOf(extension) > 0)) ? true: false;}}

FileExtensionFileFilter 被用来屏蔽名称中不含字符串extension 的文件。它还屏蔽了子目录－－这些子目录原本会让 listFiles() 方法正常返回。过滤器提供了一种很便利的方式选择性的向你的 Quartz 作业提供它能接受的作为输入的文件。

File dir = new File("/home/han/MyFile");if (!dir.exists()) {}FileFilter filter = new FileExtensionFileFilter(".xls");File[] files = dir.listFiles(filter);if (files == null || files.length <= 0) {return;}int size = files.length;for (int i = 0; i < size; i++) {File file = files[i];File aFile = file.getAbsoluteFile();long fileSize = file.length();String msg = aFile + " - Size: " + fileSize;}