Java tutorial
/** * Copyright © 2012-2013 <a href="https://github.com/thinkgem/jeesite">JeeSite</a> All rights reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); */ package com.ieasy.basic.util.file; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.io.RandomAccessFile; import java.io.Reader; import java.text.DecimalFormat; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.alibaba.fastjson.JSON; /** * ? ?????????? * * @author ThinkGem * @version 2013-06-21 */ public class FileUtils extends org.apache.commons.io.FileUtils { private static Logger logger = LoggerFactory.getLogger(FileUtils.class); /** * ??? * * @param srcFileName * ??? * @param descFileName * ?? * @return ??true?false */ public static boolean copyFile(String srcFileName, String descFileName) { return FileUtils.copyFileCover(srcFileName, descFileName, false); } /** * ?? * * @param srcFileName * ??? * @param descFileName * ?? * @param coverlay * ? * @return ??true?false */ public static boolean copyFileCover(String srcFileName, String descFileName, boolean coverlay) { File srcFile = new File(srcFileName); // ?? if (!srcFile.exists()) { logger.debug("?? " + srcFileName + " ?!"); return false; } // ??? else if (!srcFile.isFile()) { logger.debug("?" + srcFileName + " ?!"); return false; } File descFile = new File(descFileName); // ? if (descFile.exists()) { // ? if (coverlay) { logger.debug("!"); if (!FileUtils.delFile(descFileName)) { logger.debug(" " + descFileName + " !"); return false; } } else { logger.debug("? " + descFileName + " !"); return false; } } else { if (!descFile.getParentFile().exists()) { // ? logger.debug("?!"); // if (!descFile.getParentFile().mkdirs()) { logger.debug("!"); return false; } } } // ? // ?? int readByte = 0; InputStream ins = null; OutputStream outs = null; try { // ? ins = new FileInputStream(srcFile); // ? outs = new FileOutputStream(descFile); byte[] buf = new byte[1024]; // ?1024readByte-1?? while ((readByte = ins.read(buf)) != -1) { // ??? outs.write(buf, 0, readByte); } logger.debug("?? " + srcFileName + " " + descFileName + "?!"); return true; } catch (Exception e) { logger.debug("?" + e.getMessage()); return false; } finally { // ????? if (outs != null) { try { outs.close(); } catch (IOException oute) { oute.printStackTrace(); } } if (ins != null) { try { ins.close(); } catch (IOException ine) { ine.printStackTrace(); } } } } /** * ?? * * @param srcDirName * ??? * @param descDirName * ?? * @return ??true?false */ public static boolean copyDirectory(String srcDirName, String descDirName) { return FileUtils.copyDirectoryCover(srcDirName, descDirName, false); } /** * ? * * @param srcDirName * ??? * @param descDirName * ?? * @param coverlay * ? * @return ??true?false */ public static boolean copyDirectoryCover(String srcDirName, String descDirName, boolean coverlay) { File srcDir = new File(srcDirName); // ?? if (!srcDir.exists()) { logger.debug("?? " + srcDirName + " ?!"); return false; } // ?? else if (!srcDir.isDirectory()) { logger.debug("?" + srcDirName + " ?!"); return false; } // ??? String descDirNames = descDirName; if (!descDirNames.endsWith(File.separator)) { descDirNames = descDirNames + File.separator; } File descDir = new File(descDirNames); // if (descDir.exists()) { if (coverlay) { // ? logger.debug("!"); if (!FileUtils.delFile(descDirNames)) { logger.debug(" " + descDirNames + " !"); return false; } } else { logger.debug("? " + descDirNames + " !"); return false; } } else { // logger.debug("?!"); if (!descDir.mkdirs()) { logger.debug("!"); return false; } } boolean flag = true; // ?????? File[] files = srcDir.listFiles(); for (int i = 0; i < files.length; i++) { // ?? if (files[i].isFile()) { flag = FileUtils.copyFile(files[i].getAbsolutePath(), descDirName + files[i].getName()); // ? if (!flag) { break; } } // ?? if (files[i].isDirectory()) { flag = FileUtils.copyDirectory(files[i].getAbsolutePath(), descDirName + files[i].getName()); // ? if (!flag) { break; } } } if (!flag) { logger.debug("? " + srcDirName + " " + descDirName + " !"); return false; } logger.debug("? " + srcDirName + " " + descDirName + " ?!"); return true; } /** * ?? * @param fileName ?? * @return ?true?false */ public static boolean delFile(String fileName) { File file = new File(fileName); if (!file.exists()) { logger.debug(fileName + " ?!"); return true; } else { if (file.isFile()) { return FileUtils.deleteFile(fileName); } else { return FileUtils.deleteDirectory(fileName); } } } /** * ? * @param fileName ?? * @return ?true?false */ public static boolean deleteFile(File file) { if (null == file) { logger.error("Filenull"); return false; } if (file.exists() && file.isFile()) { if (file.delete()) { logger.debug("? ?[" + file + "]"); return true; } else { logger.error("?[" + file + "]"); return false; } } else { logger.error("??[" + file + "]"); return true; } } /** * ? * @param fileName ?? * @return ?true?false */ public static boolean deleteFile(String fileName) { File file = new File(fileName); if (file.exists() && file.isFile()) { if (file.delete()) { logger.debug("? ?[" + fileName + "]"); return true; } else { logger.error("?[" + fileName + "]"); return false; } } else { logger.error("??[" + fileName + "]"); return true; } } /** * * ? * * @param dirName * * @return ?true?false */ public static boolean deleteDirectory(String dirName) { String dirNames = dirName; if (!dirNames.endsWith(File.separator)) { dirNames = dirNames + File.separator; } File dirFile = new File(dirNames); if (!dirFile.exists() || !dirFile.isDirectory()) { logger.debug(dirNames + " ?!"); return true; } boolean flag = true; // ?? File[] files = dirFile.listFiles(); for (int i = 0; i < files.length; i++) { // ? if (files[i].isFile()) { flag = FileUtils.deleteFile(files[i].getAbsolutePath()); // if (!flag) { break; } } // ? else if (files[i].isDirectory()) { flag = FileUtils.deleteDirectory(files[i].getAbsolutePath()); // ? if (!flag) { break; } } } if (!flag) { logger.debug("!"); return false; } // ? if (dirFile.delete()) { logger.debug("?[" + dirName + "]"); return true; } else { logger.debug("[" + dirName + "]"); return false; } } /** * ? * * @param descFileName * ??? * @return ?true?false */ public static boolean createFile(String descFileName) { File file = new File(descFileName); if (file.exists()) { logger.debug(" " + descFileName + " !"); return false; } if (descFileName.endsWith(File.separator)) { logger.debug(descFileName + " ?!"); return false; } if (!file.getParentFile().exists()) { // ? if (!file.getParentFile().mkdirs()) { logger.debug("!"); return false; } } // try { if (file.createNewFile()) { logger.debug(descFileName + " ?!"); return true; } else { logger.debug(descFileName + " !"); return false; } } catch (Exception e) { e.printStackTrace(); logger.debug(descFileName + " !"); return false; } } /** * * * @param descDirName * ??,? * @return ?true?false */ public static boolean createDirectory(String descDirName) { String descDirNames = descDirName; if (!descDirNames.endsWith(File.separator)) { descDirNames = descDirNames + File.separator; } File descDir = new File(descDirNames); if (descDir.exists()) { logger.debug(" " + descDirNames + " !"); return false; } // if (descDir.mkdirs()) { logger.debug(" " + descDirNames + " ?!"); return true; } else { logger.debug(" " + descDirNames + " !"); return false; } } /** * * * @param content * @param filePath */ public static void writeFile(String content, String filePath) { try { if (FileUtils.createFile(filePath)) { FileWriter fileWriter = new FileWriter(filePath, true); BufferedWriter bufferedWriter = new BufferedWriter(fileWriter); bufferedWriter.write(content); bufferedWriter.close(); fileWriter.close(); } else { logger.debug("??"); } } catch (Exception e) { e.printStackTrace(); } } /** * ??? <b>function:</b> type??????type * <p> * example: type = html index.html.html -> index.html * </p> * <p> * example: type = zh_CN index.html.zh_CN -> index.html * </p> * <p> * batchRename("F:\\server\\chat-tomcat-7.0.32\\webapps\\jwchat", "zh_CN"); * </p> * * @author hoojo * @createDate 2012-5-16 ?02:16:48 * @param path * @param type * @throws Exception */ public static void batchRename(String path, String type) throws Exception { if (path == null || "".equals(path)) { throw new Exception("???"); } File dir = new File(path); File[] list = dir.listFiles(); for (File file : list) { String name = file.getName(); String[] s = name.split("\\."); if (s.length == 3 && type.equals(s[2])) { System.out.println(s[0] + "--" + s[1] + "--" + s[2]); file.renameTo(new File(path + "/" + s[0] + "." + s[1])); } } } public static void WriteJSON(String outPath, Object obj) { WriteJSON(outPath, null, obj); } public static void WriteJSON(String outPath, String perfix, Object obj) { try { String json = JSON.toJSONStringWithDateFormat(obj, "yyyy-MM-dd HH:mm:ss"); OutputStreamWriter out = new OutputStreamWriter(new FileOutputStream(outPath), "UTF-8"); out.write((null != perfix ? perfix : "") + json); out.flush(); out.close(); } catch (IOException e) { logger.error("?JSON" + e.getMessage()); } logger.debug("?JSON-->" + outPath); } /** * ?????? * * @param fileName * ?? */ public static void readFileByBytes(String fileName) { File file = new File(fileName); InputStream in = null; try { System.out.println("???"); // in = new FileInputStream(file); int tempbyte; while ((tempbyte = in.read()) != -1) { System.out.write(tempbyte); } in.close(); } catch (IOException e) { e.printStackTrace(); return; } try { System.out.println("???"); // byte[] tempbytes = new byte[100]; int byteread = 0; in = new FileInputStream(fileName); showAvailableBytes(in); // byteread while ((byteread = in.read(tempbytes)) != -1) { System.out.write(tempbytes, 0, byteread); } } catch (Exception e1) { e1.printStackTrace(); } finally { if (in != null) { try { in.close(); } catch (IOException e1) { } } } } /** * ??? * * @param fileName * ?? */ public static void readFileByChars(String fileName) { File file = new File(fileName); Reader reader = null; try { System.out.println("???"); // reader = new InputStreamReader(new FileInputStream(file)); int tempchar; while ((tempchar = reader.read()) != -1) { // windowsrn? // ? // ?r?n? if (((char) tempchar) != 'r') { System.out.print((char) tempchar); } } reader.close(); } catch (Exception e) { e.printStackTrace(); } try { System.out.println("???"); // char[] tempchars = new char[30]; int charread = 0; reader = new InputStreamReader(new FileInputStream(fileName)); // charread? while ((charread = reader.read(tempchars)) != -1) { // ??r? if ((charread == tempchars.length) && (tempchars[tempchars.length - 1] != 'r')) { System.out.print(tempchars); } else { for (int i = 0; i < charread; i++) { if (tempchars[i] == 'r') { continue; } else { System.out.print(tempchars[i]); } } } } } catch (Exception e1) { e1.printStackTrace(); } finally { if (reader != null) { try { reader.close(); } catch (IOException e1) { } } } } /** * ?????? * * @param fileName * ?? */ public static void readFileByLines(String fileName) { File file = new File(fileName); BufferedReader reader = null; try { System.out.println("???"); reader = new BufferedReader(new FileReader(file)); String tempString = null; int line = 1; // null? while ((tempString = reader.readLine()) != null) { // ? System.out.println("line " + line + ": " + tempString); line++; } reader.close(); } catch (IOException e) { e.printStackTrace(); } finally { if (reader != null) { try { reader.close(); } catch (IOException e1) { } } } } /** * ?? * * @param fileName * ?? */ public static void readFileByRandomAccess(String fileName) { RandomAccessFile randomFile = null; try { System.out.println("??"); // ???? randomFile = new RandomAccessFile(fileName, "r"); // long fileLength = randomFile.length(); // ? int beginIndex = (fileLength > 4) ? 4 : 0; // ?beginIndex? randomFile.seek(beginIndex); byte[] bytes = new byte[10]; int byteread = 0; // 10?10 // ?byteread while ((byteread = randomFile.read(bytes)) != -1) { System.out.write(bytes, 0, byteread); } } catch (IOException e) { e.printStackTrace(); } finally { if (randomFile != null) { try { randomFile.close(); } catch (IOException e1) { } } } } /** * ? * * @param in */ private static void showAvailableBytes(InputStream in) { try { System.out.println("??:" + in.available()); } catch (IOException e) { e.printStackTrace(); } } /** * ?? * * @param filePath * ?? * @param definedName * ?? * @return */ public static boolean rename(String filePath, String definedName) { File file = new File(filePath); if (file.exists()) { String fileExt = file.getName().substring(file.getName().lastIndexOf(".") + 1).toLowerCase(); String rename = file.getParent() + "/" + definedName + "." + fileExt; if (file.renameTo(new File(rename))) { logger.debug("???{} TO {}", file.getAbsoluteFile(), rename); return true; } else { logger.debug("??{} TO {}", file.getAbsoluteFile(), rename); return false; } } else { logger.debug("?{}", file.getAbsoluteFile()); return false; } } /** * ??? * * @param filename * @return */ public static String getExtend(String filename) { return getExtend(filename, ""); } /** * ??? * * @param filename * @return */ public static String getExtend(String filename, String defExt) { if ((filename != null) && (filename.length() > 0)) { int i = filename.lastIndexOf('.'); if ((i > 0) && (i < (filename.length() - 1))) { return (filename.substring(i + 1)).toLowerCase(); } } return defExt.toLowerCase(); } /** * ???[?????] * * @param * @return String */ public static String getFilePrefix(String fileName) { int splitIndex = fileName.lastIndexOf("."); return fileName.substring(0, splitIndex).replaceAll("\\s*", ""); } /** * ???[?????] * ? * @param * @return String */ public static String getFilePrefix2(String fileName) { int splitIndex = fileName.lastIndexOf("."); return fileName.substring(0, splitIndex); } public static String formetFileSize(long fileS) {// ?? DecimalFormat df = new DecimalFormat("#.00"); String fileSizeString = ""; if (fileS < 1024) { fileSizeString = df.format((double) fileS) + "B"; } else if (fileS < 1048576) { fileSizeString = df.format((double) fileS / 1024) + "K"; } else if (fileS < 1073741824) { fileSizeString = df.format((double) fileS / 1048576) + "M"; } else { fileSizeString = df.format((double) fileS / 1073741824) + "G"; } return fileSizeString; } public static void main(String[] args) { //System.out.println(formetFileSize(755996)); ; String s = "D:\\work\\app_server\\tomcat-7.0.55\\temp\\backup\\"; String t = "D:\\work\\app_server\\tomcat-7.0.55\\webapps\\ieasy\\attached\\ueditor\\"; String t1 = "D:\\work\\app_server\\tomcat-7.0.55\\webapps\\ieasy\\attached\\emp_touxiang\\"; try { copyDirectoryToDirectory(new File(t), new File(s)); copyDirectoryToDirectory(new File(t1), new File(s)); } catch (IOException e) { e.printStackTrace(); } } }