springboot如何读取配置文件（application.yml）中的属性值

<!-- 支持 @ConfigurationProperties 注解 --> <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-configuration-processor</artifactId>   <optional>true</optional> </dependency> 

myProps: #自定义的属性和值  simpleProp: simplePropValue  arrayProps: 1,2,3,4,5  listProp1:   - name: abc    value: abcValue   - name: efg    value: efgValue  listProp2:   - config2Value1   - config2Vavlue2  mapProps:   key1: value1   key2: value2 

@Component @ConfigurationProperties(prefix="myProps") //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;   } } 

@Autowired   private MyProps myProps;       @Test   public void propsTest() throws JsonProcessingException {     System.out.println("simpleProp: " + myProps.getSimpleProp());     System.out.println("arrayProps: " + objectMapper.writeValueAsString(myProps.getArrayProps()));     System.out.println("listProp1: " + objectMapper.writeValueAsString(myProps.getListProp1()));     System.out.println("listProp2: " + objectMapper.writeValueAsString(myProps.getListProp2()));     System.out.println("mapProps: " + objectMapper.writeValueAsString(myProps.getMapProps()));   } 

simpleProp: simplePropValue arrayProps: ["1","2","3","4","5"] listProp1: [{"name":"abc","value":"abcValue"},{"name":"efg","value":"efgValue"}] listProp2: ["config2Value1","config2Vavlue2"] mapProps: {"key1":"value1","key2":"value2"}