maven循環依賴，解決springboot 循環依賴

錯誤提示
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.

Despite circular references being allowed, the dependency cycle between beans could not be broken. Update your application to remove the dependency cycle.

• 問題是兩個類互相調用，引發了循環依賴

解決方法:

• 簡單方式

在注入的時候加上注解 @Lazy

@Lazy
EmployeeManagementService employeeManagementService;

如果注解不行：

• 暴力方式，在配置文件中，添加

spring:main:allow-circular-references: true

• 如果暴力方法沒有解決，可以通過反射機制來解決：

  EmployeeManagementService employeeManagementService;//解決循環依賴public EmployeeManagementService getEmployeeManagementService(){this.employeeManagementService=SpringUtil.getBean(EmployeeManagementService.class);return employeeManagementService;}

maven循環依賴，SpringUtil可以用hutool的

<dependency><groupId>cn.hutool</groupId><artifactId>hutool-all</artifactId><version>5.4.2</version></dependency>

也可以用xin.altitude.cms.common的SpringUtils

	<dependency><groupId>xin.altitude.cms.common</groupId><artifactId>ucode-cms-common</artifactId><version>1.3.4</version></dependency>

如果找不到這個依賴可以添加

    <repositories><repository><id>public</id><name>maven nexus</name><url>https://repo1.maven.org/maven2/</url><snapshots><updatePolicy>always</updatePolicy></snapshots></repository></repositories>

參考網址：https://www.jb51.net/article/238474.htm