springboot获取getBean方法以及ApplicationContext空指针问题解决

创建获取ApplicationContext工具类：

 package com.performancetest.common.utils;

 import org.springframework.beans.BeansException;

 import org.springframework.context.ApplicationContext;

 import org.springframework.context.ApplicationContextAware;

 import org.springframework.stereotype.Component;

 import java.util.Map;

 /**

  * Spring Context 工具类

  */

 @Component

 public class SpringContextUtils implements ApplicationContextAware {

     public static ApplicationContext applicationContext;

     @Override

     public void setApplicationContext(ApplicationContext applicationContext)

             throws BeansException {

         SpringContextUtils.applicationContext = applicationContext;

     }

     public static Object getBean(String name) {

         return applicationContext.getBean(name);

     }

     public static <T> T getBean(String name, Class<T> requiredType) {

         return applicationContext.getBean(name, requiredType);

     }

     public static boolean containsBean(String name) {

         return applicationContext.containsBean(name);

     }

     public static boolean isSingleton(String name) {

         return applicationContext.isSingleton(name);

     }

     public static Class<? extends Object> getType(String name) {

         return applicationContext.getType(name);

     }

 }

如果有报ApplicationContext空指针，则可能原因是没加载之前就往下走了，要在要 使用的类 前面加

@DependsOn("springContextUtils")