Spring全局懒加载的优劣及使用方法详解

@Component
public class Client {
   private static ServiceA service;
   public class Client(ServiceA service) {
      Client.service = service
   }
   // 当调用 Client.hello()方法时会报错
   public static String hello() {
      return service.hello();
   }
}

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;
/**
 * 懒加载加快启动速度
 * @author liufang
 */
@Profile(value = {"qa", "dev"})
@Configuration
public class LazyInitBeanFactoryPostProcessor implements BeanFactoryPostProcessor {
    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
        for (String beanName : beanFactory.getBeanDefinitionNames()) {
            beanFactory.getBeanDefinition(beanName).setLazyInit(true);
        }
    }
}