压缩和解压缩文件

/**
* 压缩和解压缩文件
*/
import java.util.*;
import java.util.zip.*;
import java.io.*;

public class Zip {
public Zip(){}

/**
* 压缩目录下的文件
* @param zipFileName
* @param inputFile 目录
* @throws java.lang.Exception
*/
public void zip(String zipFileName, String inputFile) throws Exception {
zip(zipFileName, new File(inputFile));
}

/**
* 压缩文件
* @param zipFileName
* @param inputFile 文件
* @throws java.lang.Exception
*/
public void zip(String zipFileName, File inputFile) throws Exception {
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));
zip(out, inputFile, "");
System.out.println("压缩成功!");
out.close();
}

public void zip(ZipOutputStream out, File f, String base) throws Exception {
System.out.println("正在压缩 " + f.getName());
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;
while ( (b = in.read()) != -1)
out.write(b);
in.close();
}

}

/**
* 解压缩
* @param zipFileName
* @param outputDirectory 输出目录
* @throws java.lang.Exception
*/
public void unzip(String zipFileName, String outputDirectory) throws
Exception {
ZipInputStream in = new ZipInputStream(new FileInputStream(zipFileName));
ZipEntry z;
while ( (z = in.getNextEntry()) != null) {
System.out.println("正在解压 " + z.getName());
if (z.isDirectory()) {
String name = z.getName();
name = name.substring(0, name.length() - 1);
File f = new File(outputDirectory + File.separator + name);
f.mkdir();
System.out.println("创建目录 " + outputDirectory + File.separator + name);
}
else {
File f = new File(outputDirectory + File.separator + z.getName());
f.createNewFile();
FileOutputStream out = new FileOutputStream(f);
int b;
while ( (b = in.read()) != -1)
out.write(b);
out.close();
}
}

in.close();
}

public static void main(String[] args) {
try {
Zip t = new Zip();
// t.zip("D://IdeaProjects.zip", "D://IdeaProjects");
// t.unzip("d://ddd//api.jar", "d://ddd//");
}
catch (Exception e) {
e.printStackTrace(System.out);
}
}
}