Java打包File

public static void zipDirectory(String directory, HttpServletResponse response) {
File zipfile = new File(directory + ".rar");
File prentfile = new File(directory);
File[] files = prentfile.listFiles();
FileOutputStream fous;
try {
fous = new FileOutputStream(zipfile);
ZipOutputStream zipOut = new ZipOutputStream(fous);
zipFile(files, zipOut);
zipOut.close();
fous.close();
// 下载
InputStream fis = new BufferedInputStream(new FileInputStream(zipfile.getPath()));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
// 清空response
response.reset();
OutputStream out = new BufferedOutputStream(response.getOutputStream());
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition", "attachment;filename=" + zipfile.getName());
out.write(buffer);
out.flush();
out.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}

}

public static void zipFile(File[] files, ZipOutputStream outputStream) {
for (int i = 0; i < files.length; i++) {
zipFile(files[i], outputStream);
}
}

public static void zipFile(File inputFile, ZipOutputStream ouputStream) {
try {
if (inputFile.exists()) {
/**
* 如果是目录的话这里是不采取操作的， 至于目录的打包正在研究中
*/
if (inputFile.isFile()) {
FileInputStream IN = new FileInputStream(inputFile);
BufferedInputStream bins = new BufferedInputStream(IN, 512);
// org.apache.tools.zip.ZipEntry
ZipEntry entry = new ZipEntry(inputFile.getName());
ouputStream.putNextEntry(entry);
// 向压缩文件中输出数据
int nNumber;
byte[] buffer = new byte[512];
while ((nNumber = bins.read(buffer)) != -1) {
ouputStream.write(buffer, 0, nNumber);
}
// 关闭创建的流对象
bins.close();
IN.close();
} else {
try {
File[] files = inputFile.listFiles();
for (int i = 0; i < files.length; i++) {
zipFile(files[i], ouputStream);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}