<dependencies>  <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-web</artifactId>  </dependency>   <dependency>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-test</artifactId>   <scope>test</scope>  </dependency> </dependencies> 

@SpringBootApplication @EnableConfigurationProperties({PropsConfig.class,YmlConfig.class}) public class ReadApplication {  public static void main(String[] args) {   SpringApplication.run(ReadApplication.class, args);  } } 

master.ds.driverClassName=com.mysql.jdbc.Driver master.ds.url=jdbc:mysql://localhost:3306/test master.ds.username=root master.ds.password=root master.ds.filters=stat master.ds.maxActive=20 master.ds.initialSize=1 master.ds.maxWait=60000 master.ds.minIdle=10 master.ds.timeBetweenEvictionRunsMillis=60000 master.ds.minEvictableIdleTimeMillis=300000 master.ds.validationQuery=SELECT 'x' master.ds.testWhileIdle=true master.ds.testOnBorrow=false master.ds.testOnReturn=false master.ds.poolPreparedStatements=true master.ds.maxOpenPreparedStatements=100 master.ds.removeAbandoned=true master.ds.removeAbandonedTimeout=1800 master.ds.logAbandoned=true 

@ConfigurationProperties(prefix = "master.ds",locations = "classpath:application.properties") public class PropsConfig {  private String driverClassName;  private String url;  private String username;  private String password;  private String filters;  private String maxActive;  private String initialSize;  private String maxWait;  public String getDriverClassName() {   return driverClassName;  }  public void setDriverClassName(String driverClassName) {   this.driverClassName = driverClassName;  }  public String getUrl() {   return url;  }  public void setUrl(String url) {   this.url = url;  }  public String getUsername() {   return username;  }  public void setUsername(String username) {   this.username = username;  }  public String getPassword() {   return password;  }  public void setPassword(String password) {   this.password = password;  }  public String getFilters() {   return filters;  }  public void setFilters(String filters) {   this.filters = filters;  }  public String getMaxActive() {   return maxActive;  }  public void setMaxActive(String maxActive) {   this.maxActive = maxActive;  }  public String getInitialSize() {   return initialSize;  }  public void setInitialSize(String initialSize) {   this.initialSize = initialSize;  }  public String getMaxWait() {   return maxWait;  }  public void setMaxWait(String maxWait) {   this.maxWait = maxWait;  } } 

@RunWith(SpringJUnit4ClassRunner.class) @SpringBootTest(classes = ReadApplication.class) public class ReadApplicationPropsTests {  @Autowired  private PropsConfig propsConfig;  @Test  public void testDisplayPropsValue() {   String driverClassName = propsConfig.getDriverClassName();   String url = propsConfig.getUrl();   String username = propsConfig.getUsername();   String password = propsConfig.getPassword();     String filters = propsConfig.getFilters();   String maxActive = propsConfig.getMaxActive();   String initialSize = propsConfig.getInitialSize();   String maxWait = propsConfig.getMaxWait();       System.out.println("driverClassName -> " + driverClassName);   System.out.println("url -> " + url);   System.out.println("username -> " + username);   System.out.println("password -> " + password);     System.out.println("initialSize -> " + initialSize);   System.out.println("maxWait -> " + maxWait);     } } 

driverClassName -> com.mysql.jdbc.Driver url -> jdbc:mysql://localhost:3306/test username -> root password -> root initialSize -> 1 maxWait -> 60000 

myProps: #自定義的屬性和值  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 

@ConfigurationProperties(prefix="myProps") //application.yml中的myProps下的屬性 public class YmlConfig {  private String simpleProp;  private String[] arrayProps;  private List<Map<String, String>> listProp1 = new ArrayList<>(); //接收prop1里面的屬性值  private List<String> listProp2 = new ArrayList<>(); //接收prop2里面的屬性值  private Map<String, String> mapProps = new HashMap<>(); //接收prop1里面的屬性值    public String getSimpleProp() {   return simpleProp;  }    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;  } } 

@RunWith(SpringJUnit4ClassRunner.class) @SpringBootTest(classes = ReadApplication.class) public class ReadApplicationYmlTests {  @Autowired  private YmlConfig ymlConfig;   @Test  public void testDisplayYmlValue() throws JsonProcessingException {   System.out.println("simpleProp: " + ymlConfig.getSimpleProp());      ObjectMapper objectMapper = new ObjectMapper();   System.out.println("arrayProps: " + objectMapper.writeValueAsString(ymlConfig.getArrayProps()));   System.out.println("listProp1: " + objectMapper.writeValueAsString(ymlConfig.getListProp1()));   System.out.println("listProp2: " + objectMapper.writeValueAsString(ymlConfig.getListProp2()));   System.out.println("mapProps: " + objectMapper.writeValueAsString(ymlConfig.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"}