用java压缩文件夹/文件

压缩文件夹代码：
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class CompressBook {
public CompressBook() {}

/**//*
* inputFileName 输入一个文件夹
* zipFileName 输出一个压缩文件夹
*/
public void zip(String inputFileName) throws Exception {
String zipFileName = "d:\\test.zip"; //打包后文件名字
System.out.println(zipFileName);
zip(zipFileName, new File(inputFileName));
}

private void zip(String zipFileName, File inputFile) throws Exception {
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));
zip(out, inputFile, "");
System.out.println("zip done");
out.close();
}

private void zip(ZipOutputStream out, File f, String base) throws Exception {
if (f.isDirectory()) {
File[] fl = f.listFiles();
out.putNextEntry(new ZipEntry(base + "/"));
base = base.length() == 0 ? "" : base + "/";
for (int i = 0; i < fl.length; i++) {
zip(out, fl[i], base + fl[i].getName());
}
}else {
out.putNextEntry(new ZipEntry(base));
FileInputStream in = new FileInputStream(f);
int b;
System.out.println(base);
while ( (b = in.read()) != -1) {
out.write(b);
}
in.close();
}
}

public static void main(String [] temp){
CompressBook book = new CompressBook();
try {
book.zip("d:\\temp");//你要压缩的文件夹
}catch (Exception ex) {
ex.printStackTrace();
}
}

}


压缩文件代码：
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class ZipOutputStreamTest {
public static void main(String[] args) throws Exception
{
File f = new File("d:\\note.txt");
FileInputStream fis = new FileInputStream(f);
BufferedInputStream bis = new BufferedInputStream(fis);
byte[] buf = new byte[1024];
int len;
FileOutputStream fos = new FileOutputStream("d:\\note.zip");
BufferedOutputStream bos = new BufferedOutputStream(fos);
ZipOutputStream zos = new ZipOutputStream(bos);//压缩包
ZipEntry ze = new ZipEntry(f.getName());//这是压缩包名里的文件名
zos.putNextEntry(ze);//写入新的 ZIP 文件条目并将流定位到条目数据的开始处

while((len=bis.read(buf))!=-1)
{
zos.write(buf,0,len);
zos.flush();
}
bis.close();
zos.close();
}

}