java文件操作工具类

最近为了修改大量收藏的美剧文件名，用swing写了个小工具，代码是文件处理部分，具体内容如下

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 转义文件目录
*
* @param path
* @return
*/
public static String formatPath(String path) {
return path.replaceAll("\\\\", "/");
}
/**
* combainPath文件路径合并
*
* @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);//子文件原文件路径
String des = combainPath(destination.getPath(), subPath);//子文件目标路径
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;//基本大小，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) {//如果文件小于基本大小，直接输出
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 移动文件
*
* @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 移动文件
*
* @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 移动文件
*
* @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("."), "_副本");
} else {
fileName.append("_副本");
}
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());
}
}
String[] fileArray = {};
if (files.size() > 0) {
fileArray = list2Array(files);
Arrays.sort(fileArray);
if (!asc) {
Arrays.sort(fileArray, Collections.reverseOrder());
}
}
String[] dirArray = {};
if (dirs.size() > 0) {
dirArray = list2Array(dirs);
Arrays.sort(dirArray);
if (!asc) {
Arrays.sort(dirArray, Collections.reverseOrder());
}
}
return concat2FileArray(fileArray, dirArray);
}
/**
* concat2FileArray 合并文件数组
*
* @param old1
* @param old2
* @return
*/
private static File[] concat2FileArray(String[] old1, String[] old2) {
File[] newArray = new File[old1.length + old2.length];
for (int i = 0, n = old1.length; i < n; i++) {
newArray[i] = new File(old1[i]);
}
for (int i = 0, j = old1.length, n = (old1.length + old2.length); j < n; i++, j++) {
newArray[j] = new File(old2[i]);
}
return newArray;
}
/**
* read 读取文本文件
*
* @param filePath
* @param fileName
* @param charset
* @return
*/
public static StringBuilder read(String filePath, String fileName, String charset) {
StringBuilder sb = new StringBuilder();
try {
String fullPath = combainPath(filePath, fileName);
File file = new File(fullPath);
sb.append(FileTools.tail(file, false, 0, charset));
} catch (Exception ex) {
j2log(null, null, ex);
}
return sb;
}
/**
* read 读取文本文件
*
* @param fullPath
* @param charset
* @return
*/
public static StringBuilder read(String fullPath, String charset) {
StringBuilder sb = new StringBuilder();
try {
File file = new File(fullPath);
sb.append(FileTools.tail(file, false, 0, charset));
} catch (Exception ex) {
j2log(null, null, ex);
}
return sb;
}
/**
* read 读取文本文件
*
* @param file
* @param charset
* @return
*/
public static StringBuilder read(File file, String charset) {
StringBuilder sb = new StringBuilder();
try {
sb.append(FileTools.tail(file, false, 0, charset));
} catch (Exception ex) {
j2log(null, null, ex);
}
return sb;
}
/**
* find 读取文本文件指定行
*
* @param filePath
* @param fileName
* @param line
* @param charset
* @return
*/
public static StringBuilder find(String filePath, String fileName, int line, String charset) {
StringBuilder sb = new StringBuilder();
try {
String fullPath = combainPath(filePath, fileName);
File file = new File(fullPath);
sb.append(FileTools.tail(file, true, line, charset));
} catch (Exception ex) {
j2log(null, null, ex);
}
return sb;
}
/**
* find 读取文本文件指定行
*
* @param fullPath
* @param line
* @param charset
* @return
*/
public static StringBuilder find(String fullPath, int line, String charset) {
StringBuilder sb = new StringBuilder();
try {
File file = new File(fullPath);
sb.append(FileTools.tail(file, true, line, charset));
} catch (Exception ex) {
j2log(null, null, ex);
}
return sb;
}
/**
* find 读取文本文件指定行
*
* @param file
* @param line
* @param charset
* @return
*/
public static StringBuilder find(File file, int line, String charset) {
StringBuilder sb = new StringBuilder();
try {
sb.append(FileTools.tail(file, true, line, charset));
} catch (Exception ex) {
j2log(null, null, ex);
}
return sb;
}
/**
* tail 读取文本文件
*
* @param filePath
* @param fileName
* @param charset
* @param find
* @param line
* @return
*/
public static StringBuilder tail(String filePath, String fileName, boolean find, int line, String charset) {
StringBuilder sb = new StringBuilder();
try {
String fullPath = combainPath(filePath, fileName);
File file = new File(fullPath);
sb.append(FileTools.tail(file, find, line, charset));
} catch (Exception ex) {
j2log(null, null, ex);
}
return sb;
}
/**
* tail 读取文本文件
*
* @param fullPath
* @param charset
* @param find
* @param line
* @return
*/
public static StringBuilder tail(String fullPath, boolean find, int line, String charset) {
StringBuilder sb = new StringBuilder();
try {
File file = new File(fullPath);
sb.append(FileTools.tail(file, find, line, charset));
} catch (Exception ex) {
j2log(null, null, ex);
}
return sb;
}
/**
* tail 读取文本文件
*
* @param file
* @param charset
* @param find
* @param line
* @return
*/
public static StringBuilder tail(File file, boolean find, int line, String charset) {
StringBuilder sb = new StringBuilder();
BufferedReader bufferReader = null;
if (null == charset || "".equals(charset)) {
charset = "UTF-8";
}
try {
if (!file.exists() || file.isDirectory()) {
throw new FileNotFoundException();
}
String fullPath = file.getPath();
bufferReader = new BufferedReader(new InputStreamReader(new FileInputStream(fullPath), charset));
String temp;
for (int i = 0; (temp = bufferReader.readLine()) != null; i++) {
if (!find || line == i) {
sb.append(temp);
}
}
} catch (Exception ex) {
j2log(null, null, ex);
} finally {
if (null != bufferReader) {
try {
bufferReader.close();
} catch (IOException ex) {
j2log(null, null, ex);
}
}
}
return sb;
}
/**
* sed 读取文本文件
*
* @param filePath
* @param fileName
* @param charset
* @return
*/
public static List<String> sed(String filePath, String fileName, String charset) {
List<String> list = new ArrayList();
try {
String fullPath = combainPath(filePath, fileName);
File file = new File(fullPath);
list.addAll(FileTools.sed(file, charset));
} catch (Exception ex) {
j2log(null, null, ex);
}
return list;
}
/**
* sed 读取文本文件
*
* @param fullPath
* @param charset
* @return
*/
public static List<String> sed(String fullPath, String charset) {
List<String> list = new ArrayList();
try {
File file = new File(fullPath);
list.addAll(FileTools.sed(file, charset));
} catch (Exception ex) {
j2log(null, null, ex);
}
return list;
}
/**
* sed 读取文本文件
*
* @param file
* @param charset
* @return
*/
public static List<String> sed(File file, String charset) {
List<String> list = new ArrayList();
BufferedReader bufferReader = null;
if (null == charset || "".equals(charset)) {
charset = "UTF-8";
}
try {
if (!file.exists() || file.isDirectory()) {
throw new FileNotFoundException();
}
String fullPath = file.getPath();
bufferReader = new BufferedReader(new InputStreamReader(new FileInputStream(fullPath), charset));
String temp;
for (int i = 0; (temp = bufferReader.readLine()) != null; i++) {
list.add(temp);
}
} catch (Exception ex) {
j2log(null, null, ex);
} finally {
if (null != bufferReader) {
try {
bufferReader.close();
} catch (IOException ex) {
j2log(null, null, ex);
}
}
}
return list;
}
/**
* cat 读取文本文件
*
* @param filePath
* @param fileName
* @return
*/
public static byte[] cat(String filePath, String fileName) {
byte[] output = {};
try {
String fullPath = combainPath(filePath, fileName);
File file = new File(fullPath);
output = FileTools.cat(file);
} catch (Exception ex) {
j2log(null, null, ex);
}
return output;
}
/**
* cat 读取文本文件
*
* @param fullPath
* @return
*/
public static byte[] cat(String fullPath) {
byte[] output = {};
try {
File file = new File(fullPath);
output = FileTools.cat(file);
} catch (Exception ex) {
j2log(null, null, ex);
}
return output;
}
/**
* cat 读取文本文件
*
* @param file
* @return
*/
public static byte[] cat(File file) {
InputStream in = null;
byte[] output = {};
try {
if (!file.exists() || file.isDirectory()) {
throw new FileNotFoundException();
}
String fullPath = file.getPath();
long length = du(file, false);
long _2M = 2097152;
byte[] bytes = new byte[(int) length];
in = new FileInputStream(fullPath);
for (int count = 0; count != -1;) {
if (length > 16 * _2M) {
length = 4 * _2M;
} else if (length > 8 * _2M) {
length = 2 * _2M;
} else if (length > 4 * _2M) {
length = _2M;
} else if (length > 2 * _2M) {
length = _2M / 2;
} else if (length > _2M) {
length = _2M / 4;
} else {
length = 4096;
}
bytes = new byte[(int) length];
count = in.read(bytes);
output = concatArray(bytes, output);
length = in.available();
}
} catch (Exception ex) {
j2log(null, null, ex);
} finally {
if (null != in) {
try {
in.close();
} catch (Exception ex) {
j2log(null, null, ex);
}
}
}
return output;
}
/**
* 合并数组
*
* @param old1
* @param old2
* @return
*/
private static byte[] concatArray(byte[] old1, byte[] old2) {
byte[] newArray = new byte[old1.length + old2.length];
System.arraycopy(old1, 0, newArray, 0, old1.length);
System.arraycopy(old2, 0, newArray, old1.length, old2.length);
return newArray;
}
/**
* dd 写入文件fullPath内容content
*
* @param filePath
* @param fileName
* @param content
* @param isAppend
*/
public static void dd(String filePath, String fileName, byte[] content, boolean isAppend) {
try {
String fullPath = combainPath(filePath, fileName);
File file = new File(fullPath);
FileTools.dd(file, content, isAppend);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* dd 写入文件fullPath内容content
*
* @param fullPath
* @param content
* @param isAppend
*/
public static void dd(String fullPath, byte[] content, boolean isAppend) {
try {
File file = new File(fullPath);
FileTools.dd(file, content, isAppend);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* dd 写入文件fullPath内容content
*
* @param file
* @param content
* @param isAppend
*/
public static void dd(File file, byte[] content, boolean isAppend) {
FileOutputStream fileOutputStream = null;
try {
if (!file.exists()) {
file.createNewFile();
}
fileOutputStream = new FileOutputStream(file, isAppend);
fileOutputStream.write(content);
} catch (Exception ex) {
j2log(null, null, ex);
} finally {
try {
if (null != fileOutputStream) {
fileOutputStream.close();
}
} catch (IOException ex) {
j2log(null, null, ex);
}
}
}
/**
* write 写文件内容content到文件fullPath
*
* @param filePath
* @param fileName
* @param content
*/
public static void write(String filePath, String fileName, String content) {
try {
String fullPath = combainPath(filePath, fileName);
File file = new File(fullPath);
FileTools.write(file, content, true);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* write 写文件内容content到文件fullPath
*
* @param fullPath
* @param content
*/
public static void write(String fullPath, String content) {
try {
File file = new File(fullPath);
FileTools.write(file, content, true);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* write 写文件内容content到文件fullPath
*
* @param file
* @param content
*/
public static void write(File file, String content) {
try {
FileTools.write(file, content, true);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* write 写（追加）文件内容content到文件fullPath
*
* @param filePath
* @param fileName
* @param content
* @param isAppend
*/
public static void write(String filePath, String fileName, String content, boolean isAppend) {
try {
String fullPath = combainPath(filePath, fileName);
File file = new File(fullPath);
FileTools.write(file, content, isAppend);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* write 写（追加）文件内容content到文件fullPath
*
* @param fullPath
* @param content
* @param isAppend
*/
public static void write(String fullPath, String content, boolean isAppend) {
try {
File file = new File(fullPath);
FileTools.write(file, content, isAppend);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* write 写（追加）文件内容content到文件fullPath
*
* @param file
* @param content
* @param isAppend
*/
public static void write(File file, String content, boolean isAppend) {
FileWriter fileWriter = null;
try {
if (!file.exists()) {
file.createNewFile();
}
fileWriter = new FileWriter(file.getPath(), isAppend);
fileWriter.write(content);
} catch (Exception ex) {
j2log(null, null, ex);
} finally {
if (null != fileWriter) {
try {
fileWriter.close();
} catch (IOException ex) {
j2log(null, null, ex);
}
}
}
}
/**
* tail 添加文件内容content到文件的index位置
*
* @param filePath
* @param fileName
* @param content
* @param index
*/
public static void tail(String filePath, String fileName, String content, long index) {
try {
String fullPath = combainPath(filePath, fileName);
File file = new File(fullPath);
FileTools.tail(file, content, index);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* tail 添加文件内容content到文件的index位置
*
* @param fullPath
* @param content
* @param index
*/
public static void tail(String fullPath, String content, long index) {
try {
File file = new File(fullPath);
FileTools.tail(file, content, index);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* tail 添加文件内容content到文件的index位置
*
* @param file
* @param content
* @param index
*/
public static void tail(File file, String content, long index) {
RandomAccessFile randomAccessFile = null;
try {
if (!file.exists()) {
file.createNewFile();
}
randomAccessFile = new RandomAccessFile(file.getPath(), "rw");
randomAccessFile.seek(index);
randomAccessFile.writeBytes(content);
} catch (Exception ex) {
j2log(null, null, ex);
} finally {
if (null != randomAccessFile) {
try {
randomAccessFile.close();
} catch (Exception ex) {
j2log(null, null, ex);
}
}
}
}
/**
* mkdir 创建目录
*
* @param filePath
* @param fileName
* @return
*/
public static File mkdir(String filePath, String fileName) {
File file = null;
try {
String fullPath = combainPath(filePath, fileName);
file = new File(fullPath);
file = mkdir(file);
} catch (Exception ex) {
j2log(null, null, ex);
}
return file;
}
/**
* mkdir 创建目录
*
* @param fullPath
* @return
*/
public static File mkdir(String fullPath) {
File file = null;
try {
file = new File(fullPath);
file = mkdir(file);
} catch (Exception ex) {
j2log(null, null, ex);
}
return file;
}
/**
* mkdir 创建目录
*
* @param file
* @return
*/
public static File mkdir(File file) {
try {
if (!file.exists()) {
file.mkdir();//如果文件夹不存在则创建
}
} catch (Exception ex) {
j2log(null, null, ex);
}
return file;
}
/**
* touch 创建文件
*
* @param filePath
* @param fileName
*/
public static void touch(String filePath, String fileName) {
try {
String fullPath = combainPath(filePath, fileName);
File file = new File(fullPath);
touch(file);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* touch 创建文件
*
* @param fullPath
*/
public static void touch(String fullPath) {
try {
File file = new File(fullPath);
touch(file);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* touch 创建文件
*
* @param file
*/
public static void touch(File file) {
try {
if (!file.exists()) {
file.createNewFile();//如果文件不存在则创建
}
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* rm 删除文件
*
* @param filePath
* @param fileName
*/
public static void rm(String filePath, String fileName) {
try {
String fullPath = combainPath(filePath, fileName);
File file = new File(fullPath);
rm(file);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* rm 删除文件
*
* @param fullPath
*/
public static void rm(String fullPath) {
try {
File file = new File(fullPath);
rm(file);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* rm 删除文件
*
* @param file
*/
public static void rm(File file) {
try {
if (!file.exists()) {
throw new FileNotFoundException();
}
if (file.isFile()) {
file.delete();
}
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* rmdir 删除目录
*
* @param filePath
* @param fileName
* @param loop
*/
public static void rmdir(String filePath, String fileName, boolean loop) {
try {
String fullPath = combainPath(filePath, fileName);
File dir = new File(fullPath);
rmdir(dir, loop);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* rmdir 删除目录
*
* @param fullPath
* @param loop
*/
public static void rmdir(String fullPath, boolean loop) {
try {
File dir = new File(fullPath);
rmdir(dir, loop);
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* rmdir 删除目录
*
* @param dir
* @param loop
*/
public static void rmdir(File dir, boolean loop) {
try {
if (!dir.exists()) {
throw new FileNotFoundException();
}
if (dir.isDirectory()) {
File[] files = dir.listFiles();
int length = files.length;
for (int i = 0; i < length && loop; i++) {
if (files[i].isDirectory()) {
rmdir(files[i], loop);
} else {
rm(files[i]);
}
}
if (loop || length == 0) {
dir.delete();
}
}
} catch (Exception ex) {
j2log(null, null, ex);
}
}
/**
* du 获取文件实际大小
*
* @param filePath
* @param fileName
* @param loop
* @return
*/
public static long du(String filePath, String fileName, boolean loop) {
long size = 0;
try {
String fullPath = combainPath(filePath, fileName);
File file = new File(fullPath);
size = du(file, loop);
} catch (Exception ex) {
j2log(null, null, ex);
}
return size;
}
/**
* du 获取文件实际大小
*
* @param filePath
* @param fileName
* @return
*/
public static long du(String filePath, String fileName) {
long size = 0;
try {
String fullPath = combainPath(filePath, fileName);
File file = new File(fullPath);
size = du(file, false);
} catch (Exception ex) {
j2log(null, null, ex);
}
return size;
}
/**
* du 获取文件实际大小
*
* @param fullPath
* @return
*/
public static long du(String fullPath) {
long size = 0;
try {
File file = new File(fullPath);
size = du(file, false);
} catch (Exception ex) {
j2log(null, null, ex);
}
return size;
}
/**
* du 获取文件实际大小
*
* @param file
* @return
*/
public static long du(File file) {
long size = 0;
try {
size = du(file, false);
} catch (Exception ex) {
j2log(null, null, ex);
}
return size;
}
/**
* du 获取文件实际大小
*
* @param fullPath
* @param loop
* @return
*/
public static long du(String fullPath, boolean loop) {
long size = 0;
try {
File file = new File(fullPath);
size = du(file, loop);
} catch (Exception ex) {
j2log(null, null, ex);
}
return size;
}
/**
* du 获取文件实际大小
*
* @param file
* @param loop
* @return
*/
public static long du(File file, boolean loop) {
FileChannel fileChannel = null;
long size = 0;
try {
if (!file.exists()) {
throw new FileNotFoundException();
}
if (file.isFile()) {
FileInputStream fis = new FileInputStream(file);
fileChannel = fis.getChannel();
size = fileChannel.size();
} else if (file.isDirectory()) {
File[] files = file.listFiles();
int length = files.length;
for (int i = 0; i < length && loop; i++) {
if (files[i].isDirectory()) {
du(files[i], loop);
} else {
size += du(files[i], false);
}
}
}
} catch (Exception ex) {
j2log(null, null, ex);
} finally {
if (null != fileChannel) {
try {
fileChannel.close();
} catch (Exception ex) {
j2log(null, null, ex);
}
}
}
return size;
}
}

以上就是本文的全部内容，希望对大家的学习有所帮助。

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