Java递归获取目录下所有特定后缀文件

一段非常简单的java代码，写成了一个小util ：

package com.util;

import java.io.File;
import java.io.FileFilter;
import java.util.List;

public class FileUtil {
	
	/**
	 * provide two default file filters
	 */
	public static FileFilter DEFAULT_JSP_FILTER = new JSPFileFilter();
	public static FileFilter DEFAULT_TXT_FILTER = new TXTFileFilter();

	/**
	 * This method will get all the target files under a specific directory
	 * 
	 * @param targetDir
	 * @param filter
	 * @param resultFiles
	 * @return
	 */
	public static List filterTargetFiles(File targetDir,
			FileFilter filter, List resultFiles) {

		/**
		 * listFiles : only list the files in the current directory, not include
		 * the files in the sub directories.
		 */
		File[] files = targetDir.listFiles(filter);
		for (File file : files) {

			if (file.isDirectory()) {

				filterTargetFiles(file, filter, resultFiles);
			} else {

				resultFiles.add(file);
			}
		}

		return resultFiles;

	}

	private static class JSPFileFilter implements FileFilter {

		@Override
		public boolean accept(File file) {

			if (file.isDirectory()) {

				return true;
			}
			String fileName = file.getName();

			return fileName.matches("(?i).+jsp$");
		}

	}
	
	private static class TXTFileFilter implements FileFilter {

		@Override
		public boolean accept(File file) {

			if (file.isDirectory()) {

				return true;
			}
			String fileName = file.getName();

			return fileName.matches("(?i).+txt$");
		}

	}

}

测试代码 ：

package com.salmon;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import com.util.FileUtil;

public class TestReadFiles {
	
	public static void main(String[] args) {
		
		String targetDirPath = "D:\\ZZZZTestDir";
		File targetDir = new File(targetDirPath);
		List allFiles = new ArrayList();
		allFiles = FileUtil.filterTargetFiles(targetDir, FileUtil.DEFAULT_TXT_FILTER, allFiles);
		// after get all the files, do the specific logic for the target files
		doTheLogic(allFiles);
		
	}
	
	/**
	 * Get all the files in the target directory, here we could conduct any logic for the files
	 * 
	 * @param filesList
	 */
	private static void doTheLogic(List filesList){
		
		for(File file : filesList){
			
			System.out.println(file.getPath());
		}
	}

}