利用ant实现解压缩
package com.ecarvalues.service.test;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import org.apache.commons.lang.StringUtils;
import org.apache.tools.zip.ZipOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.Enumeration;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
/**
* @author jeff
*/
public class ZipUtil {
public static boolean doZip(String filesDirPath, String zipFilePath) {
return doZip(new File(filesDirPath), zipFilePath);
}
private static boolean doZip(File inputFile, String zipFileName) {
ZipOutputStream out = null;
try {
out = new ZipOutputStream(new FileOutputStream(zipFileName));
boolean result = doZip(out, inputFile, "");
return result;
} catch (FileNotFoundException ex) {
//ex.printStackTrace();
return false;
} catch (IOException ex) {
//ex.printStackTrace();
return false;
} finally {
try {
out.close();
} catch (IOException ex) {
//ex.printStackTrace();
return false;
}
}
}
private static boolean doZip(ZipOutputStream out, File f, String base) {
try {
if (f.isDirectory()) {
File[] fl = f.listFiles();
out.putNextEntry(new org.apache.tools.zip.ZipEntry(base + "/"));
base = base.length() == 0 ? "" : base + "/";
for (int i = 0; i < fl.length; i++) {
doZip(out, fl[i], base + fl[i].getName());
}
} else {
out.putNextEntry(new org.apache.tools.zip.ZipEntry(base));
FileInputStream in = new FileInputStream(f);
int b;
while ((b = in.read()) != -1) {
out.write(b);
}
in.close();
}
return true;
} catch (IOException ex) {
//ex.printStackTrace();
return false;
}
}
public static boolean unZip(String srcFile, String dest, boolean deleteFile) {
try {
if(StringUtils.isNotBlank(dest)){
if(!dest.endsWith("/"))
dest=dest.trim()+"/";
}else{
}
File file = new File(srcFile);
if (!file.exists()) {
//throw new RuntimeException("解压文件不存在!");
return false;
}
ZipFile zipFile = new ZipFile(file);
Enumeration e = zipFile.getEntries();
while (e.hasMoreElements()) {
ZipEntry zipEntry = (ZipEntry) e.nextElement();
if (zipEntry.isDirectory()) {
String name = zipEntry.getName();
name = name.substring(0, name.length() - 1);
File f = new File(dest + name);
f.mkdirs();
} else {
File f = new File(dest + zipEntry.getName());
f.getParentFile().mkdirs();
f.createNewFile();
InputStream is = zipFile.getInputStream(zipEntry);
FileOutputStream fos = new FileOutputStream(f);
int length = 0;
byte[] b = new byte[1024];
while ((length = is.read(b, 0, 1024)) != -1) {
fos.write(b, 0, length);
}
is.close();
fos.close();
}
}
if (zipFile != null) {
zipFile.close();
}
if (deleteFile) {
file.deleteOnExit();
}
return true;
} catch (IOException ex) {
return false;
}
}
public static void main(String[] args) throws Exception {
//压缩文件夹
// boolean resultOfZip = ZipUtil.doZip("/Users/jeff/study/data/test", "/Users/jeff/study/data/test_chrysler.zip");
//解压缩
boolean resultOfUnZip = ZipUtil.unZip("/Users/jeff/study/data/MVGFiles.zip", "/Users/jeff/study/data/chrysler/", false);
System.out.println("压缩结果：" + resultOfUnZip + "\n解压缩结果：" );
}
}
程序实现了ZIP压缩。共分为2部分 ： 压缩（compression）与解压（decompression）
大致功能包括用了多态，递归等JAVA核心技术，可以对单个文件和任意级联文件夹进行压缩和解压。 需在代码中自定义源输入路径和目标输出路径。
package com.han;
import java.io.*;
import java.util.zip.*;
/**
* 程序实现了ZIP压缩。共分为2部分 ：
* 压缩（compression）与解压（decompression）
* <p>
* 大致功能包括用了多态，递归等JAVA核心技术，可以对单个文件和任意级联文件夹进行压缩和解压。
* 需在代码中自定义源输入路径和目标输出路径。
* <p>
* 在本段代码中，实现的是压缩部分；解压部分见本包中decompression部分。
* @author HAN
*
*/
public class CopyOfMyZipCompressing {
private int k=1; //定义递归次数变量
public CopyOfMyZipCompressing() {
// TODO Auto-generated constructor stub
}
public static void main(String[] args) {
// TODO Auto-generated method stub
long startTime=System.currentTimeMillis();
CopyOfMyZipCompressing book=new CopyOfMyZipCompressing();
try {
book.zip("C:\\Users\\HAN\\Desktop\\stock\\SpectreCompressed.zip", //自定义的zip输出路径
new File("C:\\Users\\HAN\\Desktop\\CombinedSpectres.txt")); //自定义的源输入路径，即要压缩的文件或文件夹
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
long endTime=System.currentTimeMillis();
System.out.println("耗费时间： "+(endTime-startTime)+" ms");
}
private void zip(String zipFileName, File inputFile) throws Exception{
System.out.println("压缩中...");
ZipOutputStream out=new ZipOutputStream(new FileOutputStream(zipFileName));
BufferedOutputStream bo=new BufferedOutputStream(out);
zip(out,inputFile, "/"+inputFile.getName(),bo);
bo.close();
out.close(); //输出流关闭
System.out.println("压缩完成");
}
private void zip(ZipOutputStream out, File f, String base, BufferedOutputStream bo)
throws Exception{ //方法重载
if (f.isDirectory()){
File[] fl=f.listFiles();
for(int i=0;i<fl.length;i++){
zip(out, fl[i],base+"/"+fl[i].getName(),bo); //递归遍历子文件夹
}
System.out.println("第"+k+"次递归");
k++;
}else{
out.putNextEntry(new ZipEntry(base)); // 创建zip压缩进入点base
System.out.println(base);
FileInputStream in=new FileInputStream(f);
BufferedInputStream bi=new BufferedInputStream(in);
int b;
while((b=bi.read())!=-1){
bo.write(b); //将字节流写入当前zip目录
}
bi.close();
in.close(); //输入流关闭
}
}
}
package com.han;
import java.io.*;
import java.util.zip.*;
/**
* 程序实现了ZIP压缩。共分为2部分 ：
* 压缩（compression）与解压（decompression）
* <p>
* 大致功能包括用了多态，递归等JAVA核心技术，可以对单个文件和任意级联文件夹进行压缩和解压。
* 需在代码中自定义源输入路径和目标输出路径。
* <p>
* 在本段代码中，实现的是解压部分；压缩部分见本包中compression部分。
* @author HAN
*
*/
public class CopyOfMyzipDecompressing {
public static void main(String[] args) {
// TODO Auto-generated method stub
long startTime=System.currentTimeMillis();
try {
ZipInputStream Zin=new ZipInputStream(new FileInputStream(
"C:\\Users\\HAN\\Desktop\\stock\\SpectreCompressed.zip"));//输入源zip路径
BufferedInputStream Bin=new BufferedInputStream(Zin);
String Parent="C:\\Users\\HAN\\Desktop"; //输出路径（文件夹目录）
File Fout=null;
ZipEntry entry;
try {
while((entry = Zin.getNextEntry())!=null && !entry.isDirectory()){
Fout=new File(Parent,entry.getName());
if(!Fout.exists()){
(new File(Fout.getParent())).mkdirs();
}
FileOutputStream out=new FileOutputStream(Fout);
BufferedOutputStream Bout=new BufferedOutputStream(out);
int b;
while((b=Bin.read())!=-1){
Bout.write(b);
}
Bout.close();
out.close();
System.out.println(Fout+"解压成功");
}
Bin.close();
Zin.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
long endTime=System.currentTimeMillis();
System.out.println("耗费时间： "+(endTime-startTime)+" ms");
}
}