java文件/文件夹操作

import java.io.*;public class FileOperate {public FileOperate() {}/*** 新建目录* * @param folderPath*            String 如 c:/fqf* @return boolean*/public void newFolder(String folderPath) {try {String filePath = folderPath;filePath = filePath.toString();java.io.File myFilePath = new java.io.File(filePath);if (!myFilePath.exists()) {myFilePath.mkdir();}} catch (Exception e) {System.out.println("新建目录操作出错 ");e.printStackTrace();}}/*** 新建文件* * @param filePathAndName*            String 文件路径及名称 如c:/fqf.txt* @param fileContent*            String 文件内容* @return boolean*/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("新建目录操作出错 ");e.printStackTrace();}}/*** 删除文件* * @param filePathAndName*            String 文件路径及名称 如c:/fqf.txt* @param fileContent*            String* @return boolean*/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();}}/*** 删除文件夹* * @param filePathAndName*            String 文件夹路径及名称 如c:/fqf* @param fileContent*            String* @return boolean*/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();}}/*** 删除文件夹里面的所有文件* * @param path*            String 文件夹路径 如 c:/fqf*/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}}}/*** 复制单个文件* * @param oldPath*            String 原文件路径 如：c:/fqf.txt* @param newPath*            String 复制后路径 如：f:/fqf.txt* @return boolean*/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];int length;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();}}/*** 复制整个文件夹内容* * @param oldPath*            String 原文件路径 如：c:/fqf* @param newPath*            String 复制后路径 如：f:/fqf/ff* @return boolean*/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()&&!newPath.contains(oldPath)) {// 如果是子文件夹 还要判断是否是复制在本目录下如果复制本目录下 那只递归一次否则死循环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();}}/*** 移动文件到指定目录* * @param oldPath*            String 如：c:/fqf.txt* @param newPath*            String 如：d:/fqf.txt*/public void moveFile(String oldPath, String newPath) {copyFile(oldPath, newPath);delFile(oldPath);}/*** 移动文件到指定目录* * @param oldPath*            String 如：c:/fqf.txt* @param newPath*            String 如：d:/fqf.txt*/public void moveFolder(String oldPath, String newPath) {copyFolder(oldPath, newPath);delFolder(oldPath);}
}