在将yml文件加载到对象中时获取绑定属性异常

Question

我正在尝试将包含以下元素的yml文件加载到测试类中的对象中

yml文件名为application-acl-config.yml，文件夹中还有更多的yml文件。我假设spring boot会在应用程序启动时将它们合并为一个。

  logicalClientIdentifiers:
    -   applicationIdentifier:
            applicationId: x
            logicalClientIds:
            - x
    -   applicationIdentifier:
            applicationId: y
            logicalClientIds:
            - y

@Configuration
@EnableConfigurationProperties
@ConfigurationProperties(prefix = "logicalClientIdentifiers")
public class LogicalClientIdentifiers{
        private class ApplicationIdentifier {
            private String applicationId;
            private List<String> logicalClientIds;

            public String getApplicationId() {
                return applicationId;
            }

            public void setApplicationId(String applicationId) {
                this.applicationId = applicationId;
            }

            public List<String> getLogicalClientIds() {
                return logicalClientIds;
            }

            public void setLogicalClientIds(List<String> logicalClientIds) {
                this.logicalClientIds = logicalClientIds;
            }
        }

        private List<ApplicationIdentifier> applicationIdentifiers;

        public List<ApplicationIdentifier> getApplicationIdentifiers() {
            return applicationIdentifiers;
        }

        public void setApplicationIdentifiers(List<ApplicationIdentifier> applicationIdentifiers) {
            this.applicationIdentifiers = applicationIdentifiers;
        }

    }

@RunWith(value = SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = LogicalClientIdentifiers.class, initializers = ConfigFileApplicationContextInitializer.class)
public class ChannelAuthorizationTest {

    @Autowired
    LogicalClientIdentifiers applicationAclConfigProps;


    @Test
    public void test(){
        System.out.println();
    }

}

我得到了这个例外：

`Caused by: org.springframework.boot.context.properties.ConfigurationPropertiesBindException: Error creating bean with name 'logicalClientIdentifiers': Could not bind properties to 'LogicalClientIdentifiers' : prefix=logicalClientIdentifiers, ignoreInvalidFields=false, ignoreUnknownFields=true; nested exception is org.springframework.boot.context.properties.source.InvalidConfigurationPropertyNameException: Configuration property name 'logicalClientIdentifiers' is not` valid

我相信我没有正确地创建pojo来解析yml文件，或者没有正确地引用yml文件。

Answer 1

您的Java类看起来希望加载以下YAML：

logicalClientIdentifiers:
  applicationIdentifiers:
  - applicationId: x
    logicalClientIds:
    - x
  - applicationId: y
    logicalClientIds:
    - y

您需要小心使YAML结构和您的类结构匹配。您显示的YAML忽略了类LogicalClientIdentifiers中的ApplicationIdentifiers字段，而是包含一系列映射，其中每个映射只包含一个键ApplicationIdentifier，该键不映射到Java类中的任何内容。

错误信息出现是因为您指定了无效的前缀。如文件所述,

因此必须使用@configurationproperties(prefix=“logical-client-identifiers”）。