自定义activiti流程引擎监听器

package com.tongtu.ahtt.act.customactiviti.lifelistener;

import lombok.extern.slf4j.Slf4j;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngineConfiguration;
import org.activiti.engine.ProcessEngineLifecycleListener;
import org.springframework.stereotype.Component;

import java.awt.*;
import java.util.Arrays;
import java.util.List;

/**
 * 自定义流程引擎监听器
 */
@Slf4j
@Component
public class MyProcessEngineLifeListener implements ProcessEngineLifecycleListener {
   /**
    * 流程引擎创建
    *
    * @param processEngine
    */
   @Override
   public void onProcessEngineBuilt(ProcessEngine processEngine) {
      ProcessEngineConfiguration processEngineConfiguration = processEngine.getProcessEngineConfiguration();
      String activityFontName = processEngineConfiguration.getActivityFontName();
      //获取当前系统可用字体
      GraphicsEnvironment localGraphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
      String[] availableFontFamilyNames = localGraphicsEnvironment.getAvailableFontFamilyNames();
      List<String> fontNames = Arrays.asList(availableFontFamilyNames);
      //如果不包含可用字体，做异常处理
      if (!fontNames.contains(activityFontName)) {
         StringBuffer message = new StringBuffer();
         message.append("缺少可用的字体，需要的字体为[")
               .append(activityFontName)
               .append("]")
               .append("请给系统加入相关的字体库，然后重启本系统");
         throw new RuntimeException(message.toString());
      }
      log.info("流程引擎启动成功");
   }

   /**
    * 流程引擎销毁
    *
    * @param processEngine
    */
   @Override
   public void onProcessEngineClosed(ProcessEngine processEngine) {
      log.info("流程引擎关闭");
   }
}