springboot配置文件

@ConfigurationProperties(prefix="spring.my-example")

注意一定要写get/set否则获取不到值

@Value只能处理数字、字符串这种简单值

虽然@Value可以处理list

url: http://example.com, http://example.com

@Value("${spring.my-example.url}")
public List<String> url;

也可以处理map

foo: "{key1: 'value1', key2: 'value2'}"

@Value("#{${spring.my-example.foo}}")
public Map<String,String> maps;

但是这种方式不友好

一般list和map这样写

spring:
  my-example:
    url: 
      - http://example.com
      - http://example.com
    map: 
      key1: a
      key2: b

@Configuration
@ConfigurationProperties(prefix = "spring.my-example")
public class Params {
    
    private List<String> url;
    
    private Map<String,String> map;

    public List<String> getUrl() {
        return url;
    }

    public void setUrl(List<String> url) {
        this.url = url;
    }

    public Map<String, String> getMap() {
        return map;
    }

    public void setMap(Map<String, String> map) {
        this.map = map;
    }
    
}

主要对下面两个文档的补充

http://blog.didispace.com/spring-boot-learning-21-1-3/

https://mrbird.cc/Spring-Boot%20basic%20config.html