用JAVA实现“文件和文件夹的解压”

[yhxepoh]

我在本论坛上看到许多关于这个的解释和代码，但是代码都不能实现，因为是我太笨了吧，虽然作JAVA有段时间，但还是没有入门阿，我希望大家能给我个简单，明了的例子，像我的压缩代码一样：
import java.io.*;
import java.util.zip.*;

public class SimpleZip {

private static ZipOutputStream zos;

public static void main(String[] args) {

String fileName = "d:/try";
try {
makeZip(fileName);
}
catch (Exception e) {
System.err.println(e);
}
}

public static void makeZip(String fileName) throws IOException,
FileNotFoundException {
File file = new File(fileName);
zos = new ZipOutputStream(new FileOutputStream(file + ".zip"));
recurseFiles(file);
zos.close();
}

private static void recurseFiles(File file) throws IOException,
FileNotFoundException {
if (file.isDirectory()) {
String[] fileNames = file.list();
if (fileNames != null) {
for (int i = 0; i < fileNames.length; i++) {
recurseFiles(new File(file, fileNames[i]));
}
}
}
else {
byte[] buf = new byte[1024];
int len;

ZipEntry zipEntry = new ZipEntry(file.toString());
FileInputStream fin = new FileInputStream(file);
BufferedInputStream in = new BufferedInputStream(fin);
zos.putNextEntry(zipEntry);

while ((len = in.read(buf)) >= 0) {
zos.write(buf, 0, len);
}

in.close();

zos.closeEntry();
}
}
}


附带：我是新手没有分给大家，希望大家谅解！！！！

[tsizhao]

/**
	 * 测试解压缩功能. 将d:\\download\\test.zip文件解压到d:\\temp\\zipout目录下.
	 * @param baseDir  目录
	 * @param file 要解压的ZIP文件
	 * @throws Exception
	 */
	public static void ExtractZip(String baseDir,String file) throws Exception {
		// InputStream is=new BufferedInputStream(new FileInputStream());
		//String baseDir = "D:\\workspace\\swing(js)\\";
		ZipFile zfile = new ZipFile(baseDir + File.separator + file);
		//System.out.println(zfile.getEntries());
		Enumeration zList = zfile.getEntries();
		ZipEntry ze = null;
		byte[] buf = new byte[1024];
		while (zList.hasMoreElements()) {
			// 从ZipFile中得到一个ZipEntry
			ze = (ZipEntry) zList.nextElement();
			if (ze.isDirectory()) {
				System.out.println("Dir: " + ze.getName() + " skipped..");
				continue;
			}
			if(ze.getSize()<=0)
				throw new Exception("文件长度为0");
			System.out.println("Extracting: " + ze.getName() + "\t"
					+ ze.getSize() + "\t" + ze.getCompressedSize());

			// 以ZipEntry为参数得到一个InputStream，并写到OutputStream中
			OutputStream os = new BufferedOutputStream(new FileOutputStream(
					getRealFileName(baseDir, ze.getName())));
			InputStream is = new BufferedInputStream(zfile.getInputStream(ze));
			int readLen = 0;
			while ((readLen = is.read(buf, 0, 1024)) != -1) {
				os.write(buf, 0, readLen);
			}
			is.close();
			os.close();
			System.out.println("Extracted: " + ze.getName());
		}
		zfile.close();
	}

[yhxepoh]

大哥能不能给我个完整的啊，你代码中的“zfile.getEntries”和“getRealFileName”方法我导进去出现了错误！！！

[tsizhao]

org.apache.tools.zip.ZipFile 在ant.jar包里。getRealFileName方法只是实现 给定根目录，返回一个相对路径所对应的实际文件名.这个不是主要的，你可以自己实现他，主要的已经给你了！~~~~

[yhxepoh]

哦，谢谢

[liuzi123]

顶个