import org.springframework.beans.BeansException;import org.springframework.context.ApplicationContext;import org.springframework.context.ApplicationContextAware;import org.springframework.stereotype.Component;/** * 获取Spring上下文 * * @author kelin.ll * @date on 2019/7/18 */@Componentpublic class ApplicationContextProvider implements ApplicationContextAware {    /**     * 上下文对象实例     */    private static ApplicationContext applicationContext;    @Override    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {        this.applicationContext = applicationContext;    }    /**     * 获取applicationContext     *     * @return     */    public static ApplicationContext getApplicationContext() {        return applicationContext;    }    /**     * 通过name获取 Bean.     *     * @param name     * @return     */    public static Object getBean(String name) {        return getApplicationContext().getBean(name);    }    /**     * 通过class获取Bean.     *     * @param clazz     * @param 
     
           * @return     */    public static 
      
        T getBean(Class
       
         clazz) {        return getApplicationContext().getBean(clazz);    }    /**     * 通过name,以及Clazz返回指定的Bean     *     * @param name     * @param clazz     * @param 
        
              * @return     */    public static 
         
           T getBean(String name, Class
          
            clazz) { return getApplicationContext().getBean(name, clazz); }}
          
         
        
       
      
     

测试用例：

import com.provider.ServiceProviderApplication;import lombok.extern.slf4j.Slf4j;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.boot.test.context.SpringBootTest;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;/** * @author kelin.ll * @date on 2019/7/18 */@RunWith(SpringJUnit4ClassRunner.class)@SpringBootTest(classes = ServiceProviderApplication.class)@Slf4jpublic class ApplicationContextProviderTest {    @Test    public void getBeanByNameTest(){        TaskService taskService = (TaskService)ApplicationContextProvider.getBean("taskService");        System.out.println(taskService.getAll());    }    @Test    public void getBeanByClassTest(){        TaskService taskService = ApplicationContextProvider.getBean(TaskService.class);        System.out.println(taskService.getAll());    }    @Test    public void getBeanByNameAndClassTest(){        TaskService taskService = ApplicationContextProvider.getBean("taskService",TaskService.class);        System.out.println(taskService.getAll());    }}