常用注解使用总结系列: @Order 注解

@Order 注解

@Order注解主要用来控制配置类的加载顺序
示例代码:

package com.runlion.tms.admin.constant;publicclass AService {  } package com.runlion.tms.admin.constant;publicclass BService {  }

packagecom.runlion.tms.admin.constant;  import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.core.annotation.Order;  @Configuration @Order(2) public class AConfig {   @Bean   public AService AService() {     System.out.println("AService 加载了");     return new AService();   }  } packagecom.runlion.tms.admin.constant;  import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.core.annotation.Order;  @Configuration @Order(1) public class BConfig {   @Bean   public BService bService() {     System.out.println("BService 加载了");     return new BService();   } }

测试类:

package com.runlion.tms.admin.constant;import org.springframework.context.annotation.AnnotationConfigApplicationContext;publicclassOrderMain {publicstaticvoidmain(String[] args) {     AnnotationConfigApplicationContext context =new AnnotationConfigApplicationContext("com.runlion.tms.admin.constant");   } }

输出结果:
BService 加载了
AService 加载了

因为BService 的@Order(1),所以先打印出来