Springboot項目：dubbo用@Reference注入Realm失敗

最近做項目用SpringBoot+Dubbo+Shiro做項目框架，在調試shiro自定義Realm權限的時候發現，@Reference注入的dubboService爲null；網上查了好多，但都沒有完美解決問題，問題的原因是shirofilter加載順序引起的。

解決問題的方法爲：將dubbo bean轉爲spring bean，再用spring上下（ApplicationContext）轉爲dubbo bean 就可以了。

spring上下文轉換工具：

package com.test.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class SpringBeanFactoryUtil implements ApplicationContextAware {

    private static ApplicationContext context = null;

    public static <T> T getBean(String name, Class<T> type) {
        return context.getBean(name, type);
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (SpringBeanFactoryUtil.context == null) {
            SpringBeanFactoryUtil.context = applicationContext;
        }
    }
}

將dubbo bean轉爲spring bean。先用@Reference引入，再用@Bean轉換

package com.test.security.util;

import com.alibaba.dubbo.config.annotation.Reference;
import com.dubbo.service.sys.SysUserDubboService;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

@Component
public class BeanFactoryUtil {

    @Reference
    SysUserDubboService sysUserDubboService;

    @Bean(name = "sysUserDubboService")
    public SysUserDubboService  getSysUserDubboService() {
        return sysUserDubboService;
    }

}

最後是在Realm中調用。

//定義一個dubboservice
 private SysUserDubboService sysUserDubboService;

調用。

//在用dubbboservice的方法調用
if (this.sysUserDubboService == null) {
            this.sysUserDubboService = SpringBeanFactoryUtil.getBean("sysUserDubboService",SysUserDubboService.class);
  }