[代码] Java 解压jar,zip，gzip等压缩文件

Java 解压jar，zip,gzip等压缩文件

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/**
 * 解压 jar,zip,gzip等压缩文件
 * 时间：2018-04-25
 * @author Jason
 *
 */
public class Un_jar_zip_gzip_Utils {

	/**
	 * 解压jar,zip,gzip等压缩包
	 * @param jarpath   压缩包全路径名
	 * @param targetDir 解压至目标目录
	 */
	@SuppressWarnings("resource")
	public static void UnAllFile(String jarpath,String targetDir) {
		
		if(jarpath == null || targetDir == null) {
			throw new NullPointerException("参数为空");
		}
		
		try {
			File file = new File(jarpath);      // 压缩文件,例如：D:/lib/a.zip
			ZipFile zipFile = new ZipFile(file);// 实例化ZipFile，每一个zip压缩文件都可以表示为一个ZipFile
			//实例化ZipInputStream对象，用该类的getNextEntry()方法拿到每个ZipEntry对象
			ZipInputStream zipInputStream = new ZipInputStream(new FileInputStream(file), Charset.forName("utf-8"));
			
			ZipEntry zipEntry = null;
			while ((zipEntry = zipInputStream.getNextEntry()) != null) {
			
				String fileName = zipEntry.getName();
			    
				File temp = new File(targetDir+"\\" + fileName);
			    if (! temp.getParentFile().exists())
			        temp.getParentFile().mkdirs();
			    OutputStream os = new FileOutputStream(temp);
			    //通过ZipFile的getInputStream方法拿到具体的ZipEntry的输入流
			    InputStream is = zipFile.getInputStream(zipEntry);
			    int len = 0;
			    while ((len = is.read()) != -1)
			        os.write(len);
			    os.close();
			    is.close();
			}
			zipInputStream.close();
		} catch (ZipException e) {
			e.printStackTrace();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}