解决多线程时Autowired自动注入null问题

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);

原文：https://blog.csdn.net/u011493599/article/details/78522315