import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.charset.Charset;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;

public class ZipInputStreamTest {

	public static void main(String args[]) throws IOException {
		File file = new File("D:\\test.zip");//压缩文件
		ZipFile zipFile = new ZipFile(file, Charset.forName("GBK"));//实例化ZipFile，并指定其编码格式，防止中文乱码和解压错误，每一个zip压缩文件都可以表示为一个ZipFile
		//实例化一个Zip压缩文件的ZipInputStream对象，可以利用该类的getNextEntry()方法依次拿到每一个ZipEntry对象
		ZipInputStream zipInputStream = new ZipInputStream(new FileInputStream(file), Charset.forName("GBK"));
		
		//直接利用ZipFile进行解压
		unpack(zipFile);
		
		//利用ZipFile和ZipInputStream进行解压
		unpack(zipFile, zipInputStream);
		
	}
	
	/**
	 * 该方法是通过ZipFile和ZipInputStream共同来解压文件的，通过ZipInputStream可以拿到ZipFile中的每一个
	 * ZipEntry对象，然后通过ZipFile的getInputStream(ZipEntry zipEntry)方法拿到对应的每一个ZipEntry的
	 * 输入流，从而实现文件的解压
	 * @param zipFile
	 * @param zipInputStream
	 * @throws IOException
	 */
	public static void unpack(ZipFile zipFile, ZipInputStream zipInputStream) throws IOException {
		ZipEntry zipEntry = null;
		while ((zipEntry = zipInputStream.getNextEntry()) != null) {
			String fileName = zipEntry.getName();
			File temp = new File("D:\\unpackTest\\" + fileName);
			if (! temp.getParentFile().exists())
				temp.getParentFile().mkdirs();
			OutputStream os = new FileOutputStream(temp);
			//通过ZipFile的getInputStream方法拿到具体的ZipEntry的输入流
			InputStream is = zipFile.getInputStream(zipEntry);
			int len = 0;
			System.out.println(zipEntry.getName());
			while ((len = is.read()) != -1)
				os.write(len);
			os.close();
			is.close();
		}
		zipInputStream.close();
	}
	
	/**
	 * 该方法是直接通过ZipFile的entries()方法拿到包含所有的ZipEntry对象的Enumeration对象，
	 * 接下来的操作和上面的是一样的
	 * @param zipFile
	 * @throws IOException
	 */
	public static void unpack(ZipFile zipFile) throws IOException {
		Enumeration<ZipEntry> entries = (Enumeration<ZipEntry>) zipFile.entries();
		while (entries.hasMoreElements()) {
			ZipEntry zipEntry = entries.nextElement();
			String fileName = zipEntry.getName();
			File temp = new File("D:\\unpackTest2\\" + fileName);
			if (! temp.getParentFile().exists())
				temp.getParentFile().mkdirs();
			OutputStream os = new FileOutputStream(temp);
			//通过ZipFile的getInputStream方法拿到具体的ZipEntry的输入流
			InputStream is = zipFile.getInputStream(zipEntry);
			int len = 0;
			while ((len = is.read()) != -1)
				os.write(len);
			os.close();
			is.close();
		}
	}
	
}

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class ZipOutputStreamTest {

	public static void main(String args[]) throws IOException {
		test1();
		test2();
	}
	
	public static void test1() throws IOException {
		ZipOutputStream zos = new ZipOutputStream(new FileOutputStream("D:\\testZip.zip"), Charset.forName("GBK"));
		//实例化一个名称为ab.txt的ZipEntry对象
		ZipEntry entry = new ZipEntry("ab.txt");
		//设置注释
		zos.setComment("zip测试for单个文件");
		//把生成的ZipEntry对象加入到压缩文件中，而之后往压缩文件中写入的内容都会放在这个ZipEntry对象里面
		zos.putNextEntry(entry);
		InputStream is = new FileInputStream("D:\\ab.txt");
		int len = 0;
		while ((len = is.read()) != -1)
			zos.write(len);
		is.close();
		zos.close();
	}
	
	public static void test2() throws IOException {
		File inFile = new File("D:\\test");
		ZipOutputStream zos = new ZipOutputStream(new FileOutputStream("D:\\test.zip"), Charset.forName("GBK"));
		zos.setComment("多文件处理");
		zipFile(inFile, zos, "");
		zos.close();
	}
	//压缩文件
	public static void zipFile(File inFile, ZipOutputStream zos, String dir) throws IOException {
		if (inFile.isDirectory()) {
			File[] files = inFile.listFiles();
			for (File file:files)
				zipFile(file, zos, dir + "\\" + inFile.getName());
		} else {
			String entryName = null;
			if (!"".equals(dir))
				entryName = dir + "\\" + inFile.getName();
			else
				entryName = inFile.getName();
			ZipEntry entry = new ZipEntry(entryName);
			zos.putNextEntry(entry);
			InputStream is = new FileInputStream(inFile);
			int len = 0;
			while ((len = is.read()) != -1)
				zos.write(len);
			is.close();
		}

	}
	
}