加载并获取jar包中某个类的某个方法

来源：互联网发布：触摸屏设备软件开发编辑：程序博客网时间：2024/05/16 00:54

public class JavaTest {

public static void main(String[] args) {
       try {
           // File file = new File("file:///e:\\taskJarTest.jar");
           // URL url = file.toURI().toURL();
           URL url = new URL("file:///e:\\taskJarTest.jar");
           URLClassLoader loader = new URLClassLoader(new URL[] { url });
           Class tidyClazz = loader.loadClass("类全名");
           Object ins = tidyClazz.newInstance();
           System.out.println(tidyClazz);
           Method m = tidyClazz.getDeclaredMethod("方法名");
           m.setAccessible(true);
           m.invoke(ins);
       } catch (MalformedURLException e) {
           e.printStackTrace();
       } catch (ClassNotFoundException e) {
           e.printStackTrace();
       } catch (NoSuchMethodException e) {
           e.printStackTrace();
       } catch (SecurityException e) {
           e.printStackTrace();
       } catch (InstantiationException e) {
           e.printStackTrace();
       } catch (IllegalAccessException e) {
           e.printStackTrace();
       } catch (IllegalArgumentException e) {
           e.printStackTrace();
       } catch (InvocationTargetException e) {
           e.printStackTrace();
       }
   }

}

0 0