在处理压缩文件的时候，其实重点的就是递归的使用，区分压缩的是文件还是文件夹，并如何处理文件夹下的文件和文件夹。下面就直接把代码贴出来
/**
[email protected]: 压缩解压文件
*/
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
public class Zip {
private static int BUFFERSIZE = 32;//缓冲流大小
private static FileOutputStream fileOutputStream = null;
private static ZipOutputStream zipOutputStream = null;
private static byte[] array = new byte[BUFFERSIZE];
/**
* @param outputDir
* @param outputFileName
* @throws Exception
* @Date: 2013-8-8
* @Author: lulei
* @Description:打开流
*/
private static void openZipOutputStream(String outputDir, String outputFileName) throws Exception{
fileOutputStream = new FileOutputStream(outputDir + "//" + outputFileName);
zipOutputStream = new ZipOutputStream(new BufferedOutputStream(fileOutputStream));
}
/**
* @throws Exception
* @Date: 2013-8-8
* @Author: lulei
* @Description:关闭流
*/
private static void closeZipOutputStream() throws Exception{
zipOutputStream.close();
fileOutputStream.close();
}
/**
* @Date: 2013-8-8
* @Author: lulei
* @Description:缓存清空
*/
private static void clearArrayBuffer(){
array = null;
array = new byte[BUFFERSIZE];
}
/**
* @param inputFile
* @param zipOutputStream
* @param base
* @param isPrint
* @throws Exception
* @Date: 2013-8-8
* @Author: lulei
* @Description:压缩文件
*/
private static void inputFileStream(File inputFile, ZipOutputStream zipOutputStream, String base, boolean isPrint) throws Exception{
BufferedInputStream bufferedInputStream = null;
FileInputStream fileInputStream = new FileInputStream(inputFile);
bufferedInputStream = new BufferedInputStream(fileInputStream, BUFFERSIZE);
base = base.length() == 0 ? "" : base + "/";
if (isPrint) {
System.out.println(inputFile + "...");
}
ZipEntry zipEntry = new ZipEntry(base + inputFile.getName());
zipOutputStream.putNextEntry(zipEntry);
clearArrayBuffer();
while((bufferedInputStream.read(array, 0, BUFFERSIZE))!=-1){
zipOutputStream.write(array, 0, BUFFERSIZE);
}
bufferedInputStream.close();
}
/**
* @param inputFile
* @param zipOutputStream
* @param base
* @param isPrint
* @throws Exception
* @Date: 2013-8-8
* @Author: lulei
* @Description:压缩文件夹
*/
private static void inputDirectoryStream(File inputFile, ZipOutputStream zipOutputStream, String base, boolean isPrint) throws Exception {
File[] files = inputFile.listFiles();
for (File file : files) {
if (file.isFile()) {
//这里实现递归调用
inputFileStream(file, zipOutputStream, base, isPrint);
} else {
String baseN = (base.length() == 0 ? "" : base + "/") + file.getName();
inputDirectoryStream(file, zipOutputStream, baseN, isPrint);
}
}
}
/**
* @param inputDir
* @param outputDir
* @param outputFileName
* @param isPrint
* @Date: 2013-8-8
* @Author: lulei
* @Description:压缩文件OR文件夹
*/
private static void zip(String inputDir, String outputDir, String outputFileName, boolean isPrint) {
try {
File inputFile = new File(inputDir);
if (!inputFile.exists()) {
System.out.println("Not found file " + inputDir);
return;
}
File outputFile = new File(outputDir);
if (!outputFile.exists()) {
outputFile.mkdirs();
}
openZipOutputStream(outputDir, outputFileName);
if (inputFile.isDirectory()) {
inputDirectoryStream(inputFile, zipOutputStream, "", isPrint);
} else {
inputFileStream(inputFile, zipOutputStream, "", isPrint);
}
closeZipOutputStream();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* @param inputFileName
* @param outputDir
* @param isPrint
* @Date: 2013-8-8
* @Author: lulei
* @Description: 解压文件
*/
@SuppressWarnings("rawtypes")
private static void unZip(String inputFileName, String outputDir, boolean isPrint) {
try {
File inputFile = new File(inputFileName);
if (!inputFile.exists()) {
System.out.println("Not found file " + inputFileName);
return;
}
File outputFile = new File(outputDir);
if (!outputFile.exists()) {
outputFile.mkdirs();
}
outputDir = outputDir.endsWith("[/|//]") ? outputDir : outputDir + "/";
ZipFile zipFile = null;
try {
zipFile = new ZipFile(inputFileName);
} catch (ZipException e) {
System.out.println("File " + inputFileName + " isn't zip");
return;
}
Enumeration enu = zipFile.entries();
while(enu.hasMoreElements()){
ZipEntry zipEntry = (ZipEntry)enu.nextElement();
if(zipEntry.isDirectory()){
new File(outputDir+zipEntry.getName()).mkdirs();
continue;
}
BufferedInputStream bufferedInputStream = new BufferedInputStream(zipFile.getInputStream(zipEntry));
File file = new File(outputDir+zipEntry.getName());
if (isPrint) {
System.out.println(file + "...");
}
File parent = file.getParentFile();
if(parent != null && !parent.exists()){
parent.mkdirs();
}
FileOutputStream fileOutputStream = new FileOutputStream(file);
BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(fileOutputStream, BUFFERSIZE);
clearArrayBuffer();
while((bufferedInputStream.read(array, 0, BUFFERSIZE))!=-1){
bufferedOutputStream.write(array, 0, BUFFERSIZE);
}
bufferedOutputStream.flush();
bufferedOutputStream.close();
fileOutputStream.close();
bufferedInputStream.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* @param fileName
* @param isZip
* @Date: 2013-8-8
* @Author: lulei
* @Description: 解压OR压缩文件，不显示进度
*/
public static void zipOrUnZip(String fileName, boolean isZip) {
zipOrUnZip(fileName, isZip, false);
}
/**
* @param fileName
* @param isZip
* @param isPrint
* @Date: 2013-8-8
* @Author: lulei
* @Description: 解压OR压缩文件，显示进度
*/
public static void zipOrUnZip(String fileName, boolean isZip, boolean isPrint) {
File inputFile = new File(fileName);
if (!inputFile.exists()) {
System.out.println("Not found file " + fileName);
return;
}
String outputDir = inputFile.getParent();
if (isZip) {
String outputFileName = inputFile.getName() + ".zip";
zip(fileName, outputDir, outputFileName, isPrint);
} else {
int i = inputFile.getName().indexOf(".");
if (i >= 0) {
outputDir += inputFile.getName().substring(0, i);
unZip(fileName, outputDir, isPrint);
} else {
System.out.println("File " + fileName + " isn't zip");
return;
}
}
}
public static void main(String[] args) {
// TODO Auto-generated method stub
Zip.zipOrUnZip("f:/outdoc", true, true);
Zip.zipOrUnZip("f:/outdoc.zip", false, true);
}
}
最后可以直接调用zipOrUnZip()方法来实现压缩和解压功能即可
原创文章，作者：Maggie-Hunter，如若转载，请注明出处：https://blog.ytso.com/10808.html