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=Badaobook.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@Controllerpublic class BookController {@Value("${book.author}")private String author;@Value("${book.name}")private String name;@RequestMapping("/bookInfo")@ResponseBodypublic String showInfo() {return author+":"+name;}public static void main(String[] args) {SpringApplication.run(BookController.class, args);}}

右键run as --java application

效果

打开浏览器输入：

http://localhost:8080/bookInfo