循环读取多级文件目录，并以目录格式输出。

package write_read;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.File;

public class ReadFile {
        public ReadFile() {
        }
        /**
         * 读取某个文件夹下的所有文件
         */
        public static boolean readfile(String filepath) throws FileNotFoundException, IOException {
                try {

                        File file = new File(filepath);
                        if (!file.isDirectory()) {
                                //如果是文件
                              
                                System.out.println("文件绝对路径=" + file.getAbsolutePath());
                              
                        } else if (file.isDirectory()) {
                                //如果是文件夹（及目录）;
                                String[] filelist = file.list();
                                for (int i = 0; i < filelist.length; i++) {
                                        File readfile = new File(filepath + "\\" + filelist[i]);
                                        if (!readfile.isDirectory()) {
                                           
                                                System.out.println("文件绝对路径="
                                                                + readfile.getAbsolutePath());
                                           

                                        } else if (readfile.isDirectory()) {
                                                readfile(filepath + "\\" + filelist[i]);
                                        }
                                }

                        }

                } catch (FileNotFoundException e) {
                        System.out.println("readfile()   Exception:" + e.getMessage());
                }
                return true;
        }
        public static void main(String[] args) {
            try {
                    readfile("E:/getimgs");
                  
            } catch (FileNotFoundException ex) {
            } catch (IOException ex) {
            }
            System.out.println("目录读取成功");
    }

}



输出结果如下：
文件绝对路径=E:\getimgs\1\1\2.jpg
文件绝对路径=E:\getimgs\1\2\2.jpg
文件绝对路径=E:\getimgs\1\2.jpg
文件绝对路径=E:\getimgs\2\1\2.jpg
文件绝对路径=E:\getimgs\2\2\2.jpg
文件绝对路径=E:\getimgs\2\2.jpg
文件绝对路径=E:\getimgs\2.jpg
目录读取成功