[代码] Java 解压jar,zip，gzip等压缩文件

雨点打透心脏的1/2处 2022-05-26 10:29 212阅读 0赞

## Java 解压jar，zip,gzip等压缩文件 ##

转载请注明，谢谢！

/**
     * 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();
    		}
    	}
    }