springbooot 项目读取yml配置文件(自定义)

1.需要引入的依赖包

<!--读取yml配置文件的依赖-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-configuration-processor</artifactId>
    <optional>true</optional>
</dependency>

2.yml配置文件（myproperties一定不可以有大写的，不然会报错）

myproperties: #自定义的属性和值
  simpleProp: hellow
  arrayProps: 1,2,3
  listProp1:
   - name: 123
     value: 123Value
   - name: 456
     value: 456Value
  listProp2:
     12345,
     12345
  mapProps:
    key1: 123
    key2: 123

3.配置类

@Component
@ConfigurationProperties(prefix="myproperties") //接收application.yml中的myProps下面的属性
public class MyProps {
    private String simpleProp;
    private String[] arrayProps;
    private List<Map<String, String>> listProp1 = new ArrayList<>(); //接收prop1里面的属性值
    private List<String> listProp2 = new ArrayList<>(); //接收prop2里面的属性值
    private Map<String, String> mapProps = new HashMap<>(); //接收prop1里面的属性值

    public String getSimpleProp() {
        return simpleProp;
    }

    //String类型的一定需要setter来接收属性值；maps, collections, 和 arrays 不需要
    public void setSimpleProp(String simpleProp) {
        this.simpleProp = simpleProp;
    }

    public List<Map<String, String>> getListProp1() {
        return listProp1;
    }
    public List<String> getListProp2() {
        return listProp2;
    }

    public String[] getArrayProps() {
        return arrayProps;
    }

    public void setArrayProps(String[] arrayProps) {
        this.arrayProps = arrayProps;
    }

    public Map<String, String> getMapProps() {
        return mapProps;
    }

    public void setMapProps(Map<String, String> mapProps) {
        this.mapProps = mapProps;
    }

4.测试

注入配置类

@Autowired
private MyProps myProps;

@RequestMapping("properties")
public Object getProperties() {
    System.out.println("simpleProp: " + myProps.getSimpleProp());
    System.out.println("arrayProps: " + JSON.toJSONString(myProps.getArrayProps()));
    System.out.println("listProp1: " + JSON.toJSONString(myProps.getListProp1()));
    System.out.println("listProp2: " + JSON.toJSONString(myProps.getListProp2()));
    System.out.println("mapProps: " + JSON.toJSONString(myProps.getMapProps()));
    List<String> listProp2 = myProps.getListProp2();
    System.out.println(listProp2);
    return null;
}

结果如下：