dynamic load jar and init spring

public class SpringLoader {

    private Map<String, Class<?>> classMap = new HashMap<>();

    public void loadJar(String jarPath) throws IOException, ClassNotFoundException {
        File file = new File(jarPath);
        if (!file.exists()) {
            return;
        }

        JarFile jarFile = new JarFile(jarPath);
        JarEntry jarEntry;
        ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
        URLClassLoader appClassLoader;

        URL url = new URL("jar", "", "file:" + file.getAbsolutePath() + "!/");
        System.out.println("====" + url);
        appClassLoader = new URLClassLoader(new URL[]{url}, classLoader);
        List<String> xmlList = new ArrayList<>();
        Enumeration<JarEntry> entries = jarFile.entries();

        while (entries.hasMoreElements()) {
            jarEntry = entries.nextElement();
            System.out.println(jarEntry.getName());
            if (jarEntry.getName().endsWith("spring.xml")) {
                xmlList.add("jar:" + file.toURL().toString() + "!/" + jarEntry.getName());
                System.out.println("---====" + file.getAbsolutePath());
                System.out.println("+++====" + file.toURL());
            }
        }

        Thread.currentThread().setContextClassLoader(appClassLoader);
        FileSystemXmlApplicationContext fileSystemXmlApplicationContext = new FileSystemXmlApplicationContext(xmlList.toArray(new String[]{}));

        Hello hello = fileSystemXmlApplicationContext.getBean(Hello.class);
        hello.say();

　　　　// or
　　　　

Class<?> clazz = appClassLoader.loadClass("com.demo.MyHello");
Hello hello = (Hello) clazz.newInstance();
hello.say();

    }

    public static void main(String[] args) {
        SpringLoader springLoader = new SpringLoader();
        try {
            springLoader.loadJar("target/target.jar");
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }

}