详解在SpringBoot应用中获取应用上下文方法_JAVA教程

详解在SpringBoot应用中获取应用上下文方法

2020-09-20 14:26weiliu007 JAVA教程

本篇文章主要介绍了详解在SpringBoot应用中获取应用上下文方法，具有一定的参考价值，感兴趣的小伙伴们可以参考一下。

1、定义上下文工具类：

									package com.alimama.config;

									import org.springframework.context.ApplicationContext;

									/**

									 * 上下文获取工具类

									 * @author mengfeiyang

									 *

									 */

									public class SpringContextUtil {

									 private static ApplicationContext applicationContext;

									 public static void setApplicationContext(ApplicationContext context) {

									  applicationContext = context;

									 }

									 public static Object getBean(String beanId) {

									  return applicationContext.getBean(beanId);

									 }

									}

2、在启动入口类中注入applicationContext

									package com.alimama;

									import org.springframework.boot.SpringApplication;

									import org.springframework.boot.autoconfigure.SpringBootApplication;

									import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;

									import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;

									import org.springframework.boot.context.properties.EnableConfigurationProperties;

									import org.springframework.context.ApplicationContext;

									import org.springframework.context.annotation.ComponentScan;

									import com.alimama.config.SbootConfig;

									import com.alimama.config.SpringContextUtil;

									import com.alimama.config.ZKConfig;

									import com.alimama.quartz.InitTask;

									/**

									 * spring boot启动入口类

									 * @author mengfeiyang

									 *

									 */

									@ComponentScan

									@SpringBootApplication

									@EnableConfigurationProperties({ZKConfig.class,SbootConfig.class})

									public class SbootApplication implements EmbeddedServletContainerCustomizer{

									 public static void main(String[] args) {

									 ApplicationContext applicationContext = SpringApplication.run(SbootApplication.class, args);

									 SpringContextUtil.setApplicationContext(applicationContext);

									 }

									 @Override

									 public void customize(ConfigurableEmbeddedServletContainer container) {

									 }

									}

3、调用方法

									package com.alimama.quartz;

									import java.io.IOException;

									import org.phoenix.api.action.IInterfaceAPI;

									import org.phoenix.api.action.InterfaceAPI;

									import org.quartz.Job;

									import org.springframework.beans.factory.annotation.Autowired;

									import com.alimama.config.SpringContextUtil;

									import com.alimama.dto.TaskBean;

									import com.alimama.service.IConfigService;

									import com.alimama.service.impl.ConfigService;

									/**

									 * 任务执行者

									 *

									 */

									public class TaskHandler implements Job{

									 private ConfigService configService = (ConfigService) SpringContextUtil.getBean("configService");

									 private IInterfaceAPI interf = new InterfaceAPI();

									 @Override

									 public void execute(JobExecutionContext arg0){

									 String watchDogServer = configService.getwatchDogServer();

									  System.out.println(watchDogServer);

									 }

									}