public class ZipUtils {
public static void zip(String src, String dest) {
//提供了一个数据项压缩成一个ZIP归档输出流
ZipOutputStream out = null;
try {
File outFile = new File(dest);//源文件或者目录
File fileOrDirectory = new File(src);//压缩文件路径
out = new ZipOutputStream(new FileOutputStream(outFile));
//如果此文件是一个文件，否则为false。
if (fileOrDirectory.isFile()) {
zipFileOrDirectory(out, fileOrDirectory, "");
} else {
//返回一个文件或空阵列。
File[] entries = fileOrDirectory.listFiles();
for (int i = 0; i < entries.length; i++) {
// 递归压缩，更新curPaths
zipFileOrDirectory(out, entries[i], "");
}
}
} catch (IOException ex) {
ex.printStackTrace();
} finally {
//关闭输出流
if (out != null) {
try {
out.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
}
private static void zipFileOrDirectory(ZipOutputStream out,
File fileOrDirectory, String curPath) throws IOException {
//从文件中读取字节的输入流
FileInputStream in = null;
try {
//如果此文件是一个目录，否则返回false。
if (!fileOrDirectory.isDirectory()) {
// 压缩文件
byte[] buffer = new byte[4096];
int bytes_read;
in = new FileInputStream(fileOrDirectory);
//实例代表一个条目内的ZIP归档
ZipEntry entry = new ZipEntry(curPath
+ fileOrDirectory.getName());
//条目的信息写入底层流
out.putNextEntry(entry);
while ((bytes_read = in.read(buffer)) != -1) {
out.write(buffer, 0, bytes_read);
}
out.closeEntry();
} else {
// 压缩目录
File[] entries = fileOrDirectory.listFiles();
for (int i = 0; i < entries.length; i++) {
// 递归压缩，更新curPaths
zipFileOrDirectory(out, entries[i], curPath
+ fileOrDirectory.getName() + "/");
}
}
} catch (IOException ex) {
ex.printStackTrace();
// throw ex;
} finally {
if (in != null) {
try {
in.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
}
