JAVA 遍历文件夹下的所有文件(递归调用和非递归调用)

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1.不使用递归的方法调用.

public void traverseFolder1(String path) {int fileNum = 0, folderNum = 0;File file = new File(path);if (file.exists()) {LinkedList<File> list = new LinkedList<File>();File[] files = file.listFiles();for (File file2 : files) {if (file2.isDirectory()) {System.out.println("文件夹:" + file2.getAbsolutePath());list.add(file2);fileNum++;} else {System.out.println("文件:" + file2.getAbsolutePath());folderNum++;}}File temp_file;while (!list.isEmpty()) {temp_file = list.removeFirst();files = temp_file.listFiles();for (File file2 : files) {if (file2.isDirectory()) {System.out.println("文件夹:" + file2.getAbsolutePath());list.add(file2);fileNum++;} else {System.out.println("文件:" + file2.getAbsolutePath());folderNum++;}}}} else {System.out.println("文件不存在!");}System.out.println("文件夹共有:" + folderNum + ",文件共有:" + fileNum);}

2.使用递归的方法调用.

public void traverseFolder2(String path) {File file = new File(path);if (file.exists()) {File[] files = file.listFiles();if (files.length == 0) {System.out.println("文件夹是空的!");return;} else {for (File file2 : files) {if (file2.isDirectory()) {System.out.println("文件夹:" + file2.getAbsolutePath());traverseFolder2(file2.getAbsolutePath());} else {System.out.println("文件:" + file2.getAbsolutePath());}}}} else {System.out.println("文件不存在!");}}

public static List<File> getFileList(String strPath) {File dir = new File(strPath);File[] files = dir.listFiles(); // 该文件目录下文件全部放入数组if (files != null) {for (int i = 0; i < files.length; i++) {String fileName = files[i].getName();if (files[i].isDirectory()) { // 判断是文件还是文件夹getFileList(files[i].getAbsolutePath()); // 获取文件绝对路径} else if (fileName.endsWith("avi")) { // 判断文件名是否以.avi结尾String strFileName = files[i].getAbsolutePath();System.out.println("---" + strFileName);filelist.add(files[i]);} else {continue;}}}return filelist;}