深度解析SpringBoot循环依赖问题与解决

// 将 SysUserService 和 SysRoleService 的相互依赖改为单向依赖
@Service
public class SysUserServiceImpl implements SysUserService {
    // 不再直接依赖 SysRoleService
    // 改为通过方法参数传入
    public void someMethod(SysRoleService roleService) {
        // ...
    }
}

@Service
public class SysUserServiceImpl implements SysUserService {
    @Lazy  // 延迟注入，避免循环依赖
    @Autowired
    private SysRoleService sysRoleService;
}

@Service
public class SysUserServiceImpl implements SysUserService {
    private SysRoleService sysRoleService;

    @Autowired  // 使用Setter注入，Spring会在Bean初始化后再注入依赖
    public void setSysRoleService(SysRoleService sysRoleService) {
        this.sysRoleService = sysRoleService;
    }
}

# application.properties
spring.main.allow-circular-references=true

<!-- pom.xml -->
<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper-spring-boot-starter</artifactId>
    <version>1.4.6</version> <!-- 推荐使用最新稳定版 -->
</dependency>

@SpringBootApplication(exclude = PageHelperAutoConfiguration.class)
public class MyApplication {
    public static void main(String[] args) {
        SpringApplication.run(MyApplication.class, args);
    }
}

@Configuration
public class PageHelperConfig {
    @Bean
    public PageInterceptor pageInterceptor() {
        PageInterceptor interceptor = new PageInterceptor();
        Properties props = new Properties();
        props.setProperty("helperDialect", "mysql");
        props.setProperty("reasonable", "true");
        interceptor.setProperties(props);
        return interceptor;
    }
}

mvn dependency:tree

@Service
public class MyService {
    private final OtherService otherService;
    
    @Autowired
    public MyService(OtherService otherService) {
        this.otherService = otherService;
    }
}