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【Java】读取和解压 zip 压缩包

作者:Dezai.CN / 发布于2011/7/13/ 727

这是一个演示如何读取和解压 zip 压缩包的例子。zip 压缩格式是一个开放的标准。

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

/**
* ZIP 压缩包读取和解压示例
*
* @author yiding.he
*/
public class ZipFileDemo {

 public static void main(String[] args) throws IOException {
 ZipFile zip = new ZipFile("junit.jar");
 Enumeration<? extends ZipEntry> entries = zip.entries();

 // 遍历压缩包
 while (entries.hasMoreElements()) {
 ZipEntry entry = entries.nextElement();

 if (!entry.isDirectory()) {
 // 输出被压缩的文件信息
 System.out.print(entry.getName() +
 " (compressed from " + entry.getSize() +
 " to " + entry.getCompressedSize() + ")...");

 // 解压缩文件
 InputStream is = zip.getInputStream(entry);
 FileOutputStream fos = new FileOutputStream(getFile("junit", entry.getName()));
 copyStream(is, fos);
 System.out.println("decompressed.");
 }
 }
 }

 private static File getFile(String root, String path) {
 File file = new File(root + "/" + path);
 if (!file.exists()) {
 file.getParentFile().mkdirs();
 }
 return file;
 }

 private static void copyStream(InputStream is, OutputStream os) {
 try {
 byte[] buffer = new byte[10240];
 int size = 0;

 while ((size = is.read(buffer)) != -1) {
 os.write(buffer, 0, size);
 }

 } catch (IOException e) {
 e.printStackTrace();
 } finally {
 try {
 is.close();
 } catch (IOException ex) {
 // nothing to do
 }
 try {
 os.close();
 } catch (IOException ex) {
 // nothing to do
 }
 }

 }
}

试试其它关键字

　读取和解压Zip　

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