download：Java短视频小程序开发 全栈式实战我的项目【2021最新升级版】

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package datei.steuern;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
*

  • @author s.watson
    */

public class FileTools {

public FileTools() {

}

/**

  • formatPath 本义文件目录
    *
  • @param path
  • @return
    */

public static String formatPath(String path) {

return path.replaceAll("\\\\", "/");

}

/**

  • combainPath文件门路合并
    *
  • @param eins
  • @param zwei
  • @return
    */

private static String combainPath(String eins, String zwei) {

String dori = "";eins = null == eins ? "" : formatPath(eins);zwei = null == zwei ? "" : formatPath(zwei);if (!eins.endsWith("/") && zwei.indexOf("/") != 0) {  dori = eins + "/" + zwei;} else {  dori = (eins + zwei).replaceAll("//", "/");}return dori;

}

/**

  • list2Array 列表转换数组
    *
  • @param list
  • @return
    */

private static String[] list2Array(List list) {

String array[] = (String[]) list.toArray(new String[list.size()]);return array;

}

/**

  • cp 复制文件
    *
  • @param source
  • @param destination
  • @param loop
  • @return
    */

public static List<File> cp(String source, String destination, boolean loop) {

List<File> list = new ArrayList();try {  File srcFile = new File(source);  File desFile = new File(destination);  list.addAll(cp(srcFile, desFile, loop));} catch (Exception ex) {  j2log(null, null, ex);}return list;

}

/**

  • cp 复制文件
    *
  • @param source
  • @param destination
  • @param loop
  • @return
    */

public static List<File> cp(File source, File destination, boolean loop) {

List<File> list = new ArrayList();try {  if (!source.exists() || source.isDirectory()) {    throw new FileNotFoundException();  }  list.add(cp(source, destination));  if (loop) {    String[] subFile = source.list();    for (String subPath : subFile) {      String src = combainPath(source.getPath(), subPath);//子文件原文件门路      String des = combainPath(destination.getPath(), subPath);//子文件指标门路      File subfile = new File(src);      if (subfile.isFile()) {        list.add(cp(src, des));      } else if (subfile.isDirectory() && loop) {        list.addAll(cp(src, des, loop));      }    }  }} catch (Exception ex) {  j2log(null, null, ex);}return list;

}

/**

  • cp 单文件复制文件
    *
  • @param source
  • @param destination
  • @return
    */

public static File cp(String source, String destination) {

File desFile = null;try {  File srcFile = new File(source);  desFile = new File(destination);  desFile = cp(srcFile, desFile);} catch (Exception ex) {  j2log(null, null, ex);}return desFile;

}

/**

  • cp 单文件复制文件
    *
  • @param source
  • @param destination
  • @return
    */

public static File cp(File source, File destination) {

FileInputStream in = null;FileOutputStream out = null;FileChannel inc = null;FileChannel outc = null;try {  if (!source.exists() || source.isDirectory()) {    throw new FileNotFoundException();  }  if (source.getPath().equals(destination.getPath())) {    return source;  }  long allbytes = du(source, false);  if (!destination.exists()) {    destination.createNewFile();  }  in = new FileInputStream(source.getPath());  out = new FileOutputStream(destination);  inc = in.getChannel();  outc = out.getChannel();  ByteBuffer byteBuffer = null;  long length = 2097152;//根本大小，默认2M  long _2M = 2097152;  while (inc.position() < inc.size()) {    if (allbytes > (64 * length)) {//如果文件大小大于128M 缓存改为64M      length = 32 * _2M;    } else if (allbytes > (32 * length)) {//如果文件大小大于64M 缓存改为32M      length = 16 * _2M;    } else if (allbytes > (16 * length)) {//如果文件大小大于32M 缓存改为16M      length = 8 * _2M;    } else if (allbytes > (8 * length)) {//如果文件大小大于16M 缓存改为8M      length = 4 * _2M;    } else if (allbytes > (4 * length)) {//如果文件大小大于8M 缓存改为4M      length = 2 * _2M;    } else if (allbytes > (2 * length)) {//如果文件大小大于4M 缓存改为2M      length = _2M;    } else if (allbytes > (length)) {//如果文件大小大于2M 缓存改为1M      length = _2M / 2;    } else if (allbytes < length) {//如果文件小于根本大小，间接输入      length = allbytes;    }    allbytes = inc.size() - inc.position();    byteBuffer = ByteBuffer.allocateDirect((int) length);    inc.read(byteBuffer);    byteBuffer.flip();    outc.write(byteBuffer);    outc.force(false);  }} catch (Exception ex) {  j2log(null, null, ex);} finally {  try {    if (null != inc) {      inc.close();    }    if (null != outc) {      outc.close();    }    if (null != in) {      in.close();    }    if (null != out) {      out.close();    }  } catch (Exception ex) {    j2log(null, null, ex);  }}return destination;

}

/**

  • rename 文件重命名
    *
  • @param filePath
  • @param from
  • @param to
  • @return
    */

public static File rename(String filePath, String from, String to) {

File newFile = null;try {  File oldFile = new File(combainPath(filePath, from));  newFile = new File(combainPath(filePath, to));  rename(newFile, oldFile);} catch (Exception ex) {  j2log(null, null, ex);}return newFile;

}

/**

  • rename 文件重命名
    *
  • @param to
  • @param from
  • @return
    */

public static File rename(File from, File to) {

try {  String newPath = to.getPath();  String oldPath = from.getPath();  if (!oldPath.equals(newPath)) {    if (!to.exists()) {      from.renameTo(to);    }  }} catch (Exception ex) {  j2log(null, null, ex);}return to;

}

/**

  • mv 挪动文件
    *
  • @param fileName
  • @param source
  • @param destination
  • @param cover
    */

public static void mv(String fileName, String source, String destination, boolean cover) {

try {  if (!source.equals(destination)) {    File oldFile = new File(combainPath(source, fileName));    File newFile = new File(combainPath(destination, fileName));    mv(oldFile, newFile, cover);  }} catch (Exception ex) {  j2log(null, null, ex);}

}

/**

  • mv 挪动文件
    *
  • @param source
  • @param destination
  • @param cover
    */

public static void mv(String source, String destination, boolean cover) {

try {  if (!source.equals(destination)) {    File oldFile = new File(source);    File newFile = new File(destination);    mv(oldFile, newFile, cover);  }} catch (Exception ex) {  j2log(null, null, ex);}

}

/**

  • mv 挪动文件
    *
  • @param source
  • @param destination
  • @param cover
    */

public static void mv(File source, File destination, boolean cover) {

try {  if (!source.exists()) {    throw new FileNotFoundException();  }  StringBuilder fileName = new StringBuilder(source.getName());  if (!cover && source.getPath().equals(destination.getPath())) {    if (fileName.indexOf(".") > 0) {      fileName.insert(fileName.lastIndexOf("."), "_正本");    } else {      fileName.append("_正本");    }    cp(source, new File(combainPath(source.getParent(), fileName.toString())));  } else {    source.renameTo(destination);  }} catch (Exception ex) {  j2log(null, null, ex);}

}

/**

  • extensions 获取文件扩展名信息
    *
  • @param filePath
  • @param fileName
  • @return
    */

private static String[] extensions(String filePath, String fileName) {

String[] extension = {};try {  String fullPath = combainPath(filePath, fileName);  File file = new File(fullPath);  extensions(file);} catch (Exception ex) {  j2log(null, null, ex);}return extension;

}

/**

  • extensions 获取文件扩展名信息
    *
  • @param fullPath
  • @return
    */

private static String[] extensions(String fullPath) {

String[] extension = {};try {  File file = new File(fullPath);  extensions(file);} catch (Exception ex) {  j2log(null, null, ex);}return extension;

}

/**

  • extensions 获取文件扩展名信息
    *
  • @param file
  • @return
    */

private static String[] extensions(File file) {

String[] extension = {};try {  if (file.isFile()) {    String fileName = file.getName();    if (fileName.lastIndexOf(".") >= 0) {      int lastIndex = fileName.lastIndexOf(".");      extension[0] = String.valueOf(lastIndex);//扩展名的“.”的索引      extension[1] = fileName.substring(lastIndex + 1);//扩展名      extension[2] = fileName.substring(0, lastIndex);//文件名    }  }} catch (Exception ex) {  j2log(null, null, ex);}return extension;

}

/**

  • ls 遍历文件
    *
  • @param filePath
  • @param loop
  • @return
    */

public static List<File> ls(String filePath, boolean loop) {

List<File> list = new ArrayList();try {  File file = new File(filePath);  list.addAll(ls(file, loop));} catch (Exception ex) {  j2log(null, null, ex);}return list;

}

/**

  • ls 遍历文件
    *
  • @param file
  • @param loop
  • @return
    */

public static List<File> ls(File file, boolean loop) {

List<File> list = new ArrayList();try {  list.add(file);  if (!file.isDirectory()) {    list.add(file);  } else if (file.isDirectory()) {    File[] subList = file.listFiles();    subList = filesSort(subList, true);    for (File subFile : subList) {      if (subFile.isDirectory() && loop) {        list.addAll(ls(subFile.getPath(), loop));      } else {        list.add(subFile);      }    }  }} catch (Exception ex) {  j2log(null, null, ex);}return list;

}

/**

  • filesSort 文件排序（默认升序）
    *
  • @param parentPath
  • @param subList
  • @return
    */

private static File[] filesSort(File[] inFiles, boolean asc) {

List<String> files = new ArrayList();List<String> dirs = new ArrayList();for (File subFile : inFiles) {  if (subFile.isDirectory()) {    dirs.add(subFile.getPath());  } else if (subFile.isFile()) {    files.add(subFile.getPath());  }}