Java文件操作工具类
此类包含利用JAVA进行文件的压缩，解压，删除，拷贝操作。部分代码总结了网上的代码，并修正了很多BUG,例如压缩中文问题，压缩文件中多余空文件问题。注意：此类中用到的压缩类ZipEntry等都来自于org.apache.tools包而非java.util。此包在ant.jar中有。
/*
* Version information
*
* Date:2008-6-26
*
* Copyright (C) 2008 Chris.Tu
*/
package test;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
import org.apache.tools.zip.ZipOutputStream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* java文件操作工具类
* @author Chris
* @version 2008-6-26
*/
public class FileUtil {
protected static Logger log = LoggerFactory.getLogger(FileUtil.class);
/**
* 压缩文件
* @param inputFileName 要压缩的文件或文件夹路径，例如：c:\\a.txt,c:\\a\
* @param outputFileName 输出zip文件的路径，例如：c:\\a.zip
*/
public static void zip(String inputFileName, String outputFileName) throws Exception {
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(outputFileName));
zip(out, new File(inputFileName), "");
log.debug("压缩完成！");
out.closeEntry();
out.close();
}
/**
* 压缩文件
* @param out org.apache.tools.zip.ZipOutputStream
* @param file 待压缩的文件
* @param base 压缩的根目录
*/
private static void zip(ZipOutputStream out, File file, String base) throws Exception {
if (file.isDirectory()) {
File[] fl = file.listFiles();
base = base.length() == 0 ? "" : base File.separator;
for (int i = 0; i < fl.length; i) {
zip(out, fl, base fl.getName());
}
} else {
out.putNextEntry(new ZipEntry(base));
log.debug("添加压缩文件：" base);
FileInputStream in = new FileInputStream(file);
int b;
while ((b = in.read()) != -1) {
out.write(b);
}
in.close();
}
}
/**
* 解压zip文件
* @param zipFileName 待解压的zip文件路径，例如：c:\\a.zip
* @param outputDirectory 解压目标文件夹,例如：c:\\a\
*/
public static void unZip(String zipFileName, String outputDirectory) throws Exception {
ZipFile zipFile = new ZipFile(zipFileName);
try {
Enumeration<?> e = zipFile.getEntries();
ZipEntry zipEntry = null;
createDirectory(outputDirectory, "");
while (e.hasMoreElements()) {
zipEntry = (ZipEntry) e.nextElement();
log.debug("解压：" zipEntry.getName());
if (zipEntry.isDirectory()) {
String name = zipEntry.getName();
name = name.substring(0, name.length() - 1);
File f = new File(outputDirectory File.separator name);
f.mkdir();
log.debug("创建目录：" outputDirectory File.separator name);
} else {
String fileName = zipEntry.getName();
fileName = fileName.replace('\\', '/');
if (fileName.indexOf("/") != -1) {
createDirectory(outputDirectory, fileName.substring(0, fileName.lastIndexOf("/")));
fileName = fileName.substring(fileName.lastIndexOf("/") 1, fileName.length());
}
File f = new File(outputDirectory File.separator zipEntry.getName());
f.createNewFile();
InputStream in = zipFile.getInputStream(zipEntry);
FileOutputStream out = new FileOutputStream(f);
byte[] by = new byte;
int c;
while ((c = in.read(by)) != -1) {
out.write(by, 0, c);
}
in.close();
out.close();
}
}
} catch (Exception ex) {
System.out.println(ex.getMessage());
} finally {
zipFile.close();
log.debug("解压完成！");
}
}
上一页
private static void createDirectory(String directory, String subDirectory) {
String dir[];
File fl = new File(directory);
try {
if (subDirectory == "" && fl.exists() != true) {
fl.mkdir();
} else if (subDirectory != "") {
dir = subDirectory.replace('\\', '/').split("/");
for (int i = 0; i < dir.length; i) {
File subFile = new File(directory File.separator dir);
if (subFile.exists() == false)
subFile.mkdir();
directory= File.separator dir;
}
}
} catch (Exception ex) {
System.out.println(ex.getMessage());
}
}
/**
* 拷贝文件夹中的所有文件到另外一个文件夹
* @param srcDirector 源文件夹
* @param desDirector 目标文件夹
*/
public static void copyFileWithDirector(String srcDirector, String desDirector) throws IOException {
(new File(desDirector)).mkdirs();
File[] file = (new File(srcDirector)).listFiles();
for (int i = 0; i < file.length; i) {
if (file.isFile()) {
log.debug("拷贝：" file.getAbsolutePath() "-->" desDirector "/" file.getName());
FileInputStream input = new FileInputStream(file);
FileOutputStream output = new FileOutputStream(desDirector "/" file.getName());
byte[] b = new byte;
int len;
while ((len = input.read(b)) != -1) {
output.write(b, 0, len);
}
output.flush();
output.close();
input.close();
}
if (file.isDirectory()) {
log.debug("拷贝：" file.getAbsolutePath() "-->" desDirector "/" file.getName());
copyFileWithDirector(srcDirector "/" file.getName(), desDirector "/" file.getName());
}
}
}
/**
* 删除文件夹
* @param folderPath folderPath 文件夹完整绝对路径
*/
public static void delFolder(String folderPath) throws Exception {
//删除完里面所有内容
delAllFile(folderPath);
String filePath = folderPath;
filePath = filePath.toString();
File myFilePath = new File(filePath);
//删除空文件夹
myFilePath.delete();
}
/**
* 删除指定文件夹下所有文件
* @param path 文件夹完整绝对路径
*/
public static boolean delAllFile(String path) throws Exception {
boolean flag = false;
File file = new File(path);
if (!file.exists()) {
return flag;
}
上一页
if (!file.isDirectory()) {
return flag;
}
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);
} else {
temp = new File(path File.separator tempList);
}
if (temp.isFile()) {
temp.delete();
}
if (temp.isDirectory()) {
//先删除文件夹里面的文件
delAllFile(path "/" tempList);
//再删除空文件夹
delFolder(path "/" tempList);
flag = true;
}
}
return flag;
}
}
上一页
页:
[1]