Spring Boot集成pf4j实现插件开发功能

<dependency>    <groupId>org.pf4j</groupId>    <artifactId>pf4j</artifactId>    <version>3.0.1</version></dependency>

package com.et.pf4j;
import org.pf4j.ExtensionPoint;
public interface Greeting extends ExtensionPoint {
    String getGreeting();
}

/* * Copyright (C) 2012-present the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *     http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package org.pf4j.demo.welcome;
import com.et.pf4j.Greeting;import org.apache.commons.lang.StringUtils;
import org.pf4j.Extension;import org.pf4j.Plugin;import org.pf4j.PluginWrapper;import org.pf4j.RuntimeMode;
/** * @author Decebal Suiu */public class WelcomePlugin extends Plugin {
    public WelcomePlugin(PluginWrapper wrapper) {        super(wrapper);    }
    @Override    public void start() {        System.out.println("WelcomePlugin.start()");        // for testing the development mode        if (RuntimeMode.DEVELOPMENT.equals(wrapper.getRuntimeMode())) {            System.out.println(StringUtils.upperCase("WelcomePlugin"));        }    }
    @Override    public void stop() {        System.out.println("WelcomePlugin.stop()");    }
    @Extension    public static class WelcomeGreeting implements Greeting {
        @Override        public String getGreeting() {            return "Welcome ,my name is pf4j-plugin-01";        }
    }
}

package com.et.pf4j;
import org.pf4j.JarPluginManager;import org.pf4j.PluginManager;import org.springframework.boot.autoconfigure.SpringBootApplication;
import java.nio.file.Paths;import java.util.List;
@SpringBootApplicationpublic class DemoApplication {
/* public static void main(String[] args) {      SpringApplication.run(DemoApplication.class, args);   }*/   public static void main(String[] args) {

      // create the plugin manager      PluginManager pluginManager = new JarPluginManager(); // or "new ZipPluginManager() / new DefaultPluginManager()"
      // start and load all plugins of application      //pluginManager.loadPlugins();
      pluginManager.loadPlugin(Paths.get("D:\\IdeaProjects\\ETFramework\\pf4j\\pf4j-plugin-01\\target\\pf4j-plugin-01-1.0-SNAPSHOT.jar"));      pluginManager.startPlugins();      /*        // retrieves manually the extensions for the Greeting.class extension point        List<Greeting> greetings = pluginManager.getExtensions(Greeting.class);        System.out.println("greetings.size() = " + greetings.size());        */      // retrieve all extensions for "Greeting" extension point      List<Greeting> greetings = pluginManager.getExtensions(Greeting.class);      for (Greeting greeting : greetings) {         System.out.println(">>> " + greeting.getGreeting());      }
      // stop and unload all plugins      pluginManager.stopPlugins();      //pluginManager.unloadPlugins();

   }}