内容转自:http://www.dev26.com/blog/article/421
- package test;
- import java.io.File;
- import java.io.FileInputStream;
- import java.io.FileOutputStream;
- import java.io.FileWriter;
- import java.io.InputStream;
- import java.io.PrintWriter;
- public class FileOperate {
- public FileOperate() {
- }
- public void newFolder(String folderPath) {
- try {
- String filePath = folderPath;
- filePath = filePath.toString();
- File myFilePath = new File(filePath);
- if (!myFilePath.exists()) {
- myFilePath.mkdir();
- }
- } catch (Exception e) {
- System.out.println("新建目录操作出错 ");
- e.printStackTrace();
- }
- }
- public void newFile(String filePathAndName, String fileContent) {
- try {
- String filePath = filePathAndName;
- filePath = filePath.toString();
- File myFilePath = new File(filePath);
- if (!myFilePath.exists()) {
- myFilePath.createNewFile();
- }
- FileWriter resultFile = new FileWriter(myFilePath);
- PrintWriter myFile = new PrintWriter(resultFile);
- String strContent = fileContent;
- myFile.println(strContent);
- resultFile.close();
- } catch (Exception e) {
- System.out.println("新建文件操作出错 ");
- e.printStackTrace();
- }
- }
- public void delFile(String filePathAndName) {
- try {
- String filePath = filePathAndName;
- filePath = filePath.toString();
- java.io.File myDelFile = new java.io.File(filePath);
- myDelFile.delete();
- } catch (Exception e) {
- System.out.println("删除文件操作出错 ");
- e.printStackTrace();
- }
- }
- public void delFolder(String folderPath) {
- try {
- delAllFile(folderPath); // 删除完里面所有内容
- String filePath = folderPath;
- filePath = filePath.toString();
- java.io.File myFilePath = new java.io.File(filePath);
- myFilePath.delete(); // 删除空文件夹
- } catch (Exception e) {
- System.out.println("删除文件夹操作出错 ");
- e.printStackTrace();
- }
- }
- public void delAllFile(String path) {
- File file = new File(path);
- if (!file.exists()) {
- return;
- }
- if (!file.isDirectory()) {
- return;
- }
- String[] tempList = file.list();
- File temp = null;
- for (int i = 0; i < tempList.length; i++) {
- if (path.endsWith(File.separator)) {
- temp = new File(path + tempList[i]);
- } else {
- temp = new File(path + File.separator + tempList[i]);
- }
- if (temp.isFile()) {
- temp.delete();
- }
- if (temp.isDirectory()) {
- delAllFile(path + "/ " + tempList[i]);// 先删除文件夹里面的文件
- delFolder(path + "/ " + tempList[i]);// 再删除空文件夹
- }
- }
- }
- public void copyFile(String oldPath, String newPath) {
- try {
- int bytesum = 0;
- int byteread = 0;
- File oldfile = new File(oldPath);
- if (oldfile.exists()) { // 文件存在时
- InputStream inStream = new FileInputStream(oldPath); // 读入原文件
- FileOutputStream fs = new FileOutputStream(newPath);
- byte[] buffer = new byte[1444];
- while ((byteread = inStream.read(buffer)) != -1) {
- bytesum += byteread; // 字节数 文件大小
- System.out.println(bytesum);
- fs.write(buffer, 0, byteread);
- }
- inStream.close();
- }
- } catch (Exception e) {
- System.out.println("复制单个文件操作出错 ");
- e.printStackTrace();
- }
- }
- public void copyFolder(String oldPath, String newPath) {
- try {
- (new File(newPath)).mkdirs(); // 如果文件夹不存在 则建立新文件夹
- File a = new File(oldPath);
- String[] file = a.list();
- File temp = null;
- for (int i = 0; i < file.length; i++) {
- if (oldPath.endsWith(File.separator)) {
- temp = new File(oldPath + file[i]);
- } else {
- temp = new File(oldPath + File.separator + file[i]);
- }
- if (temp.isFile()) {
- FileInputStream input = new FileInputStream(temp);
- FileOutputStream output = new FileOutputStream(newPath
- + "/ " + (temp.getName()).toString());
- byte[] b = new byte[1024 * 5];
- int len;
- while ((len = input.read(b)) != -1) {
- output.write(b, 0, len);
- }
- output.flush();
- output.close();
- input.close();
- }
- if (temp.isDirectory()) {// 如果是子文件夹
- copyFolder(oldPath + "/ " + file[i], newPath + "/ "
- + file[i]);
- }
- }
- } catch (Exception e) {
- System.out.println("复制整个文件夹内容操作出错 ");
- e.printStackTrace();
- }
- }
- public void moveFile(String oldPath, String newPath) {
- copyFile(oldPath, newPath);
- delFile(oldPath);
- }
- public void moveFolder(String oldPath, String newPath) {
- copyFolder(oldPath, newPath);
- delFolder(oldPath);
- }
- }