多线程时Autowired自动注入问题

小灰灰 2022-06-05 00:54 205阅读 0赞

在多线程时使用@Autowired总是获取不到bean，原因是：new thread不在spring容器中，也就无法获得spring中的bean对象。

解决方法：手动获取

package com.test.configs;
    
    import org.springframework.beans.BeansException;
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.ApplicationContextAware;
    import org.springframework.stereotype.Component;
    
    @Component
    public class BeanContext implements ApplicationContextAware {
    
    	private static ApplicationContext applicationContext;
    	
    	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    		BeanContext.applicationContext = applicationContext;
    	}
    	
    	public static ApplicationContext getApplicationContext(){
    		return applicationContext;
    	}
    	
    	@SuppressWarnings("unchecked")
    	public static <T> T getBean(String name) throws BeansException {
    		return (T)applicationContext.getBean(name);
    	}
    	
    	public static <T> T getBean(Class<T> clz) throws BeansException {
    	    return (T)applicationContext.getBean(clz);
    	}
    }

创建thread

package com.test.handler;
    
    import com.test.configs.BeanContext;
    import com.test.service.TestService;
    import com.test.model.User;
    
    /**
     * created by huguoju on 2017/11/13.
     */
    public class TestHandler implements Runnable {
    
        private User user;
        private TestService testService;
        @Override
        public void run() {
            this.testService= BeanContext.getApplicationContext().getBean(TestService.class);
            User user=testService.queryUserById(11);
        }
    
        public User getUser() {
            return user;
        }
    
        public void setUser(User user) {
            this.user = user;
        }
    }
    
    
     
     
    
    
    
    
     
     在其他service里调用
     ThreadFactory namedThreadFactory = new ThreadFactoryBuilder().setNameFormat("upFinancial-pool-%d").build();
                ExecutorService pool = new ThreadPoolExecutor(corePoolSize, maxPoolSize,
                        6000L, TimeUnit.MILLISECONDS,
                        new LinkedBlockingDeque<Runnable>(1024), namedThreadFactory, new ThreadPoolExecutor.AbortPolicy());
                UpFinancialContractHandler handler=new UpFinancialContractHandler();
                handler.setUser(user);
                pool.execute(handler);