SpringBoot中通过@Value获取自定义配置的值

分手后的思念是犯贱 2023-10-18 15:51 53阅读 0赞

## 场景 ##

在SpringBoot项目中的application.properties中定义变量，要在

controller中获取自定义配置的值。

## 实现 ##

打开

application.properties

添加如下代码

book.author=Badao
    book.name=SpringBoot

新建BookController.java

package com.example.demo.controller;
    
    import javax.sound.midi.MidiDevice.Info;
    
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    @EnableAutoConfiguration
    @Controller
    public class BookController {
     
     @Value("${book.author}")
     private String author;
     
     @Value("${book.name}")
     private String name;
     
     @RequestMapping("/bookInfo")
     @ResponseBody
     public String showInfo() {
      
      return author+":"+name;
     }
     
     public static void main(String[] args) {
      SpringApplication.run(BookController.class, args);
     }
     
    }

右键run as --java application

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

### 效果 ###

打开浏览器输入：

[http://localhost:8080/bookInfo][http_localhost_8080_bookInfo]

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1][]

[Image 1]: 
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20190320235020756.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[http_localhost_8080_bookInfo]: http://localhost:8080/bookInfo
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/2019032023502867.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70