获取jar包内容/获取jar包文件

最新推荐文章于 2024-11-24 19:45:02 发布

原创最新推荐文章于 2024-11-24 19:45:02 发布 · 518 阅读

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public static void main(String[] args) throws Exception {
	URL resource = JarReader.class.getResource("");//根据class所在目录
	String path = resource.getPath();
	//File curr = new File("");//根据jar包所在目录
	//String path = curr.getAbsolutePath() + "/";
	System.out.println("根据目录:" + path);
	File file = new File(path);
	String[] fileArr = file.list();
	ArrayList<String> fileList = new ArrayList<>();
	for (String fileName : fileArr) {
		if (fileName.endsWith(".jar") && !fileName.contains("JarReader")) {
			fileList.add(path + fileName);
		}
	}
	System.out.println("获取到:" + fileList.size() + "个jar包");
	for (String filePath : fileList) {
		JarFile jarFile = new JarFile(filePath);
		Enumeration<JarEntry> entries = jarFile.entries();
		while (entries.hasMoreElements()) {
			JarEntry jarEntry = entries.nextElement();
			parseJar(jarEntry, filePath, path);
		}
	}
}

public static void parseJar(JarEntry jarEntry, String filePath, String dirPath) throws Exception {
	String name = jarEntry.getName();
	if (!name.startsWith("conf") && !name.startsWith("META-INF") && name.endsWith(".xml") && name.contains("dao")) {
		File xmlFile = new File(dirPath + "/xml");
		if (!xmlFile.exists()) {
			xmlFile.mkdir();
		}
		URL url = new URL("jar:file:" + filePath + "!/" + name);
		xmlFile = new File(dirPath + "/xml/" + name.substring(0, name.lastIndexOf("/")));
		if (!xmlFile.exists()) {
			xmlFile.mkdirs();
		}
		xmlFile = new File(dirPath + "/xml/" + name);
		if (xmlFile.exists()) {
			System.out.println("该文件-> " + filePath.substring(filePath.lastIndexOf("/") + 1) + ">" + name + " 已存在");
			return;
		}
		System.out.println("获取到xml-> " + name);
		FileOutputStream fileOutputStream = new FileOutputStream(xmlFile);
		InputStream inputStream = url.openStream();
		BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(fileOutputStream);
		int length;
		byte[] bytes = new byte[10240];
		while ((length = inputStream.read(bytes)) != -1) {
			bufferedOutputStream.write(bytes, 0, length);
		}
		bufferedOutputStream.flush();
		inputStream.close();
		bufferedOutputStream.close();
	}
}