介绍

@Profile元注解是在不同的生产环境中，@Bean创建的SpringBean根据spring.profiles.active指定的环境不同创建不同环境的bean对象

一.@Profile元注解需要配合spring.profiles.active一起使用

二.首先在resources下创建三个配置文件

application.properties:

spring.profiles.active=prod

其他两个配置文件创建了就行!

三.创建需要注入的实体类

package com.wzq.dome.entity;import lombok.Data;/*** @description:* @author: Wzq* @create: 2019-12-12 15:00*/
@Data
public class ProFileEntity {private String name;}

四.根据spring.profiles.active指定不同的环境选择注入的bean

DomeApplication：代码如下

package com.wzq;import com.wzq.dome.entity.ProFileEntity;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Profile;@SpringBootApplication
public class DomeApplication {public static void main(String[] args) {SpringApplication.run(DomeApplication.class, args);}@Bean(name = "proFileEntity")@Profile("prod")public ProFileEntity proFileEntity1(){ProFileEntity proFileEntity = new ProFileEntity();proFileEntity.setName("GoslingWu");return proFileEntity;}@Bean(name = "proFileEntity")@Profile("dev")public ProFileEntity proFileEntity(){ProFileEntity proFileEntity = new ProFileEntity();proFileEntity.setName("wzq");return proFileEntity;}}

五.使用

package com.wzq.dome.action;import com.wzq.dome.entity.ProFileEntity;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;/*** @description:* @author: Wzq* @create: 2019-12-12 10:27*/
@RestController
public class TestController {@AutowiredProFileEntity proFileEntity;@RequestMapping("/test")public String test(){return proFileEntity.getName();}}

六.成功