4.1 @Order
- Spring 4.2 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.order;
public class Demo1Service {
}
package com.wisely.spring4_2.order;
public class Demo2Service {
}
- 两个配置类,注意@Order配置加载的顺序
package com.wisely.spring4_2.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.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.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
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