任务触发组件加载顺序调整，避免小概率情况下组件随机加载顺序导致的I18N的NPE问题;

doc/XXL-JOB官方文档.md

 - 6、调度组件优化：针对永远不会触发的Cron禁止配置和启动；任务Cron最后一次触发后再也不会触发时，比如一次性任务，主动停止相关任务；
 - 7、任务列表交互优化，支持查看任务所属执行器的注册节点；
 - 8、DB重连优化，修复DB宕机重连后任务调度停止的问题，重连后自动加入调度集群触发任务调度；
-- 9、任务触发组件加载顺序调整，避免小概率情况下组件随机加载顺序导致的I18N的NPE问题。
+- 9、任务触发组件加载顺序调整，避免小概率情况下组件随机加载顺序导致的I18N的NPE问题;
 - 10、项目依赖升级至较新稳定版本，如spring、spring-boot、mybatis、slf4j、groovy等等；
 - 11、JobThread自销毁优化，避免并发触发导致triggerQueue中任务丢失问题；
 - 12、[ING，交互兼容问题待处理]Cron在线生成工具：任务新增、编辑框通过组件在线生成Cron表达式；

xxl-job-admin/src/main/java/com/xxl/job/admin/controller/JobApiController.java

 package com.xxl.job.admin.controller;
 
 import com.xxl.job.admin.controller.annotation.PermissionLimit;
-import com.xxl.job.admin.core.conf.XxlJobScheduler;
+import com.xxl.job.admin.core.scheduler.XxlJobScheduler;
 import com.xxl.job.core.biz.AdminBiz;
 import org.springframework.beans.factory.InitializingBean;
 import org.springframework.stereotype.Controller;

xxl-job-admin/src/main/java/com/xxl/job/admin/controller/JobLogController.java

 package com.xxl.job.admin.controller;
 
-import com.xxl.job.admin.core.conf.XxlJobScheduler;
+import com.xxl.job.admin.core.scheduler.XxlJobScheduler;
 import com.xxl.job.admin.core.exception.XxlJobException;
 import com.xxl.job.admin.core.model.XxlJobGroup;
 import com.xxl.job.admin.core.model.XxlJobInfo;

xxl-job-admin/src/main/java/com/xxl/job/admin/core/conf/XxlJobAdminBean

-package com.xxl.job.admin.conf;
-
-import org.springframework.beans.factory.annotation.Qualifier;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-
-/**
- * @Auther: zhuolin.ji
- * @Date: 2019/10/12 18:08
- * @Package: com.xxl.job.admin.conf
- * @Description:
- */
-@Configuration
-public class XxlJobAdminBean {
-
-    @Bean(name = "xxlJobAdminConfig")
-    public XxlJobAdminConfig getXxlJobAdminConfig() {
-        return new XxlJobAdminConfig();
-    }
-
-    @Bean(initMethod = "init", destroyMethod = "destroy")
-    public XxlJobScheduler getXxlJobScheduler(@Qualifier(value = "xxlJobAdminConfig") XxlJobAdminConfig xxlJobAdminConfig) {
-        XxlJobAdminConfig.setAdminConfig(xxlJobAdminConfig);
-        return new XxlJobScheduler();
-    }
-
-}

xxl-job-admin/src/main/java/com/xxl/job/admin/core/conf/XxlJobAdminConfig.java

 package com.xxl.job.admin.core.conf;
 
+import com.xxl.job.admin.core.scheduler.XxlJobScheduler;
 import com.xxl.job.admin.dao.XxlJobGroupDao;
 import com.xxl.job.admin.dao.XxlJobInfoDao;
 import com.xxl.job.admin.dao.XxlJobLogDao;
 import com.xxl.job.admin.dao.XxlJobRegistryDao;
 import com.xxl.job.core.biz.AdminBiz;
+import org.springframework.beans.factory.DisposableBean;
 import org.springframework.beans.factory.InitializingBean;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.mail.javamail.JavaMailSender;
  * @author xuxueli 2017-04-28
  */
 
-public class XxlJobAdminConfig {
+@Component
+public class XxlJobAdminConfig implements InitializingBean, DisposableBean {
+
     private static XxlJobAdminConfig adminConfig = null;
     public static XxlJobAdminConfig getAdminConfig() {
         return adminConfig;
     }
 
-    public static void setAdminConfig(XxlJobAdminConfig config) {
-        XxlJobAdminConfig.adminConfig = config;
+
+    // ---------------------- XxlJobScheduler ----------------------
+
+    private XxlJobScheduler xxlJobScheduler;
+
+    @Override
+    public void afterPropertiesSet() throws Exception {
+        adminConfig = this;
+
+        xxlJobScheduler = new XxlJobScheduler();
+        xxlJobScheduler.init();
     }
 
+    @Override
+    public void destroy() throws Exception {
+        xxlJobScheduler.destroy();
+    }
+
+
+    // ---------------------- XxlJobScheduler ----------------------
+
     // conf
     @Value("${xxl.job.i18n}")
     private String i18n;

xxl-job-admin/src/main/java/com/xxl/job/admin/core/route/strategy/ExecutorRouteBusyover.java

 package com.xxl.job.admin.core.route.strategy;
 
-import com.xxl.job.admin.core.conf.XxlJobScheduler;
+import com.xxl.job.admin.core.scheduler.XxlJobScheduler;
 import com.xxl.job.admin.core.route.ExecutorRouter;
 import com.xxl.job.admin.core.util.I18nUtil;
 import com.xxl.job.core.biz.ExecutorBiz;

xxl-job-admin/src/main/java/com/xxl/job/admin/core/route/strategy/ExecutorRouteFailover.java

 package com.xxl.job.admin.core.route.strategy;
 
-import com.xxl.job.admin.core.conf.XxlJobScheduler;
+import com.xxl.job.admin.core.scheduler.XxlJobScheduler;
 import com.xxl.job.admin.core.route.ExecutorRouter;
 import com.xxl.job.admin.core.util.I18nUtil;
 import com.xxl.job.core.biz.ExecutorBiz;

xxl-job-admin/src/main/java/com/xxl/job/admin/core/conf/XxlJobScheduler.java → xxl-job-admin/src/main/java/com/xxl/job/admin/core/scheduler/XxlJobScheduler.java

-package com.xxl.job.admin.core.conf;
+package com.xxl.job.admin.core.scheduler;
 
+import com.xxl.job.admin.core.conf.XxlJobAdminConfig;
 import com.xxl.job.admin.core.thread.JobFailMonitorHelper;
 import com.xxl.job.admin.core.thread.JobRegistryMonitorHelper;
 import com.xxl.job.admin.core.thread.JobScheduleHelper;
 import com.xxl.rpc.serialize.Serializer;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.DisposableBean;
-import org.springframework.beans.factory.InitializingBean;
-import org.springframework.context.annotation.DependsOn;
-import org.springframework.stereotype.Component;
 
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletRequest;
     private static final Logger logger = LoggerFactory.getLogger(XxlJobScheduler.class);
 
 
-    
     public void init() throws Exception {
         // init i18n
         initI18n();

xxl-job-admin/src/main/java/com/xxl/job/admin/core/trigger/XxlJobTrigger.java

 package com.xxl.job.admin.core.trigger;
 
 import com.xxl.job.admin.core.conf.XxlJobAdminConfig;
-import com.xxl.job.admin.core.conf.XxlJobScheduler;
+import com.xxl.job.admin.core.scheduler.XxlJobScheduler;
 import com.xxl.job.admin.core.model.XxlJobGroup;
 import com.xxl.job.admin.core.model.XxlJobInfo;
 import com.xxl.job.admin.core.model.XxlJobLog;