按正则表达式过滤符合条件的文件或文件夹的工具类

import java.io.File;import java.io.FileFilter;import java.io.FilenameFilter;import java.util.ArrayList;import java.util.regex.Matcher;import java.util.regex.Pattern;public class FilesFilter {// 用于缓存文件列表@SuppressWarnings("unchecked")private ArrayList files = new ArrayList();// 用于承载文件路径private String _path;// 用于承载未合并的正则公式private String _regexp;// 文件过滤器class MyFileFilter implements FileFilter {public boolean accept(File file) {try {Pattern pattern = Pattern.compile(_regexp);// 文件夹不过滤掉if (file.isDirectory())return true;Matcher match = pattern.matcher(file.getName());return match.find();} catch (Exception e) {return false;}}}// 文件名过滤器class MyFilenameFilter implements FilenameFilter {public boolean accept(File dir, String name) {try {Pattern pattern = Pattern.compile(_regexp);File file = new File(dir.getPath() + name);// 文件夹过滤掉if (file.isDirectory())return false;return pattern.matcher(name).find();} catch (Exception e) {return false;}}}FilesFilter() {} /** * 分析文件名并加入files * * @param input */@SuppressWarnings("unchecked")private void getFile(String path, String regexp) {// 目录_path = path;_regexp = regexp;File directory = new File(_path);File[] filesFile = directory.listFiles(new MyFileFilter());if (filesFile == null)return;for (int j = 0; j < filesFile.length; j++) {if(filesFile[j].isDirectory()){//递归获取子目录中符合条件的文件getFile(filesFile[j].getAbsolutePath()+"//",_regexp);}else{files.add(filesFile[j]);System.out.println(filesFile[j].getPath()+filesFile[j].getName());}}return;}private void getFileNames(String path, String regexp) {// 目录_path = path;_regexp = regexp;File directory = new File(_path);String[] filesFile = directory.list(new MyFilenameFilter());for (String s : filesFile) {System.out.println(s);}} public static void main(String[] args) {FilesFilter fa = new FilesFilter();//过滤e盘中已jar和zip为扩展名的文件fa.getFileNames("E:", "[//s//S]*.(sql)$");System.out.println("----------------------------------");fa.getFile("E:", "[//s//S]*.(sql)$"); }}