import org.springframework.stereotype.Service;
import javax.annotation.Resource;
 
@Service
public class ComponentA {
 
    @Resource
    private ComponentB componentB;
 
}

import org.springframework.stereotype.Service;
import javax.annotation.Resource;
 
@Service
public class ComponentB {
 
    @Resource
    private ComponentA componentA;
 
}

現(xiàn)在，2.6.0 這個版本已經(jīng)默認禁止 Bean 之間的循環(huán)引用，如果存在循環(huán)引用就會啟動失敗報錯：

***************************
APPLICATION FAILED TO START
***************************

Description:

The dependencies of some of the beans in the application context form a cycle:

┌─────┐
| componentA
↑ ↓
| componentB
└─────┘

Action:

Relying upon circular references is discouraged and they are prohibited by default. Update your application to remove the dependency cycle between beans. As a last resort, it may be possible to break the cycle automatically by setting spring.main.allow-circular-references to true.

處理方案一：

整改業(yè)務，清理掉所有存在循環(huán)引用的 Bean

處理方案二：

spring:
  main:
    allow-circular-references: true

處理方案三：

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
@SpringBootApplication
public class SpringDemoApplication {
 
    public static void main(String[] args) {
        SpringApplication application = new SpringApplication(SpringDemoApplication.class);
        application.setAllowCircularReferences(Boolean.TRUE);
        application.run(args);
    }
}

總結(jié)

到此這篇關(guān)于Spring Boot2.6.0新特性之默認禁止循環(huán)引用的文章就介紹到這了,更多相關(guān)SpringBoot2.6.0默認禁止循環(huán)引用內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！