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ZipInputStream

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# 解压文件

/**

* 解压文件

* @param file 压缩文件

* @param targetDir 解压文件输出的目录

* @throws IOException

*/

public static void unPacket(Path file, Path targetDir) throws IOException {

if (!Files.exists(targetDir)) {

Files.createDirectories(targetDir);

}

// 创建zip对象

ZipFile zipFile = new ZipFile(file.toFile());

try {

// 读取zip流

try(ZipInputStream zipInputStream = new ZipInputStream(Files.newInputStream(file))){

ZipEntry zipEntry = null;

// 遍历每一个zip项

while ((zipEntry = zipInputStream.getNextEntry()) != null) {

// 获取zip项目名称

String entryName = zipEntry.getName();

// 构建绝对路径

Path entryFile = targetDir.resolve(entryName);

if(zipEntry.isDirectory()) { // 文件夹

if (!Files.isDirectory(entryFile)) {

Files.createDirectories(entryFile);

}

} else { // 文件

// 读取zip项数据流

try(InputStream zipEntryInputStream = zipFile.getInputStream(zipEntry)){

try(OutputStream fileOutputStream = Files.newOutputStream(entryFile, StandardOpenOption.CREATE_NEW)){

byte[] buffer = new byte[4096];

int length = 0;

while ((length = zipEntryInputStream.read(buffer)) != -1) {

fileOutputStream.write(buffer, 0, length);

}

fileOutputStream.flush();

}

}

}

}

}

} finally {

zipFile.close();

}

}