Java解凍zip圧縮ファイル

必要なパッケージは、mavenでインポートし、mavenを使用してインポートを自分でダウンロードしないでください.

			org.apache.ant
			ant
			1.9.7
		

解凍コード添付

private static final int buffer = 2048;  

/**
	 *   Zip   
	 * @param path      
	 * @throws IOException 
	 */
	public static void unZip(String path) throws IOException {
		int count = -1;
		String savepath = "";

		File file = null;
		InputStream is = null;
		FileOutputStream fos = null;
		BufferedOutputStream bos = null;

		savepath = path.substring(0, path.lastIndexOf("/")) + File.separator; //        
		new File(savepath).mkdir(); //      
		ZipFile zipFile = null;
		try {
			zipFile = new ZipFile(path,"gbk"); //        
			Enumeration> entries = zipFile.getEntries();

			while(entries.hasMoreElements()) {
				byte buf[] = new byte[buffer];

				ZipEntry entry = (ZipEntry)entries.nextElement();

				String filename = entry.getName();
				boolean ismkdir = false;
				if(filename.lastIndexOf("/") != -1){ //            
					ismkdir = true;
				}
				filename = savepath + filename;

				if(entry.isDirectory()){ //         
					file = new File(filename);
					file.mkdirs();
					continue;
				}
				file = new File(filename);
				if(!file.exists()){ //        
					if(ismkdir){
						new File(filename.substring(0, filename.lastIndexOf("/"))).mkdirs(); //     
					}
				}
				file.createNewFile(); //    

				is = zipFile.getInputStream(entry);
				fos = new FileOutputStream(file);
				bos = new BufferedOutputStream(fos, buffer);

				while((count = is.read(buf)) > -1) {
					bos.write(buf, 0, count);
				}
				bos.flush();
				bos.close();
				fos.close();

				is.close();
			}

			zipFile.close();

		} finally {
			try{
				if(bos != null){
					bos.close();
				}
				if(fos != null) {
					fos.close();
				}
				if(is != null){
					is.close();
				}
				if(zipFile != null){
					zipFile.close();
				}
			}catch(Exception e) {
				e.printStackTrace();
			}
		}
	}

解凍の呼び出し

//     
Util.unZip(path);
//      
new File(path).delete();