4. Spring 4.2.3前瞻-使用@Order调整配置类加载顺序-白红宇

4. Spring 4.2.3前瞻-使用@Order调整配置类加载顺序

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发布时间：2019-05-25

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4.1 @Order

Spring 4.2.3 利用@Order控制配置类的加载顺序

4.2 演示

两个演示bean

package com.wisely.spring4_2.3.order;public class Demo1Service {}

package com.wisely.spring4_2.3.order;public class Demo2Service {}

两个配置类,注意@Order配置加载的顺序 
  
   
  package com.wisely.spring4_2.3.order;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.core.annotation.Order;@Configuration@Order(2)public class Demo1Config {    @Bean    public Demo1Service demo1Service(){        System.out.println("demo1config 加载了");        return new Demo1Service();    }}  
  
   
  package com.wisely.spring4_2.3.order;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.core.annotation.Order;@Configuration@Order(1)public class Demo2Config {    @Bean    public Demo2Service demo2Service(){        System.out.println("demo2config 加载了");        return new Demo2Service();    }}  
  
 
  运行 
  
   
  package com.wisely.spring4_2.3.order;import org.springframework.context.annotation.AnnotationConfigApplicationContext;public class Main {    public static void main(String[] args) {        AnnotationConfigApplicationContext context =                new AnnotationConfigApplicationContext("com.wisely.spring4_2.order");    }}  
 输出结果  
   
  demo2config 加载了demo1config 加载了  
 读者可自己调整顺序在运行