@Profile-根据不同环境注入bean

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 {

    @Autowired
    ProFileEntity proFileEntity;

    @RequestMapping("/test")
    public String test(){
        return proFileEntity.getName();
    }

}

六.成功