@PostConstruct dubbo还未注册此时调用服务报错

最新推荐文章于 2025-06-14 01:00:00 发布

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#spring #java #微服务 #PostConstruct #dubbo

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本文介绍了一个自定义的BeanPostProcessor实现，用于Spring框架中Bean的初始化前后处理逻辑，特别是针对特定Bean（如SessionFlashMapManager）执行额外启动任务。

package com.hanshow.mapserver.portal.web;

import com.hanshow.component.thread.StartProcessor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.lang.Nullable;
import org.springframework.stereotype.Component;

@Component
public class BeanPostProcessorForWeb implements BeanPostProcessor {
    static Logger logger = LoggerFactory.getLogger(BeanPostProcessorForWeb.class);
    @Autowired
    private StartProcessor startProcessor;
    @Nullable
    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
        logger.info("before beanName={}",beanName);
        return bean;
    }

    @Nullable
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        logger.info("after beanName={}",beanName);
        if("org.springframework.web.servlet.support.SessionFlashMapManager".equals(beanName)){
            try {
                //本来在PostConstruct执行的代码某个bean加载完毕后在执行此时dubbo已经注册
                //org.springframework.web.servlet.support.SessionFlashMapManager需要根据实际情况改下
                startProcessor.startup();
            } catch (Exception e) {
                logger.error("",e);
            }
        }
        return bean;
    }
}