JAVA-通过接口读取本地jar包，并调用其中实现了接口的类中的方法

Posted 2021-02-01 a77355699

URLClassLoader classLoader = new URLClassLoader(new URL[]{new URL("jar 本地路径，例如：file:D:/project/inputsplit-1.0-SNAPSHOT.jar")}, Thread.currentThread().getContextClassLoader());
Reflections reflections = new Reflections("your interface package", classLoader);
Set<Class<? extends "your interface">> subTypesOf = reflections.getSubTypesOf("your interface");
//从继承中获取任意实现
subTypesOf.stream().findAny().ifPresent(clazz -> {
    try {
        "your interface" interface = clazz.newInstance();
    } catch (Exception e) {
        throw new RuntimeException();
    }
});