Springboot @ConfigurationProperties不注入

Question

我很难将我的属性文件(export s.yml)注入到映射中。我在resources文件夹中创建了属性文件，链接到属性源，为property对象创建了一个配置，并使用lombok生成了getter和setter，但仍然没有将任何内容填充到字段映射(field= null)中。我遗漏了什么吗？这是我到目前为止掌握的代码

FieldReplacerProperties.java

@Getter
@Setter
@Component
@ConfigurationProperties(prefix = "export")
@PropertySource("classpath:export-fields.yml")
public class FieldReplacerProperties {
    private Map<String, String> fields;

public List<String> columnsToFields(List<String> columns){
        columns.parallelStream().forEach(column -> fields.get(column));
        return columns;
    }

}

FieldReplacerConfiguration.java

@Getter
@Setter
@Configuration
@EnableConfigurationProperties(FieldReplacerProperties.class)
public class FieldReplacerConfiguration {

    @Autowired
    private FieldReplacerProperties fieldReplacerProperties;

    public List<String> columnsToFields(List<String> columns){
        return fieldReplacerProperties.columnsToFields(columns);
    }
}

export-fields.yml

export:
  fields:
    id: number
    name: programName
    type: contractType
    term: contractTerm
    ...

我是如何访问它的

@Autowired
private FieldReplacerConfiguration fieldReplacerConfiguration;
//replace columns with fields
fieldReplacerConfiguration.columnsToFields(columns);

Answer 1

添加了一个PropertySourceFactory，这解决了这个问题。

@PropertySource变更

@PropertySource(value = "classpath:export-fields.yml", factory = YamlPropertySourceFactory.class)

YML工厂

public class YamlPropertySourceFactory implements PropertySourceFactory {

@Override
public PropertySource<?> createPropertySource(String name, EncodedResource encodedResource) {
    YamlPropertiesFactoryBean factory = new YamlPropertiesFactoryBean();
    factory.setResources(encodedResource.getResource());

Properties properties = factory.getObject();

return new PropertiesPropertySource(encodedResource.getResource().getFilename(), properties);

}

}

Answer 2

Spring从application.properties (或yml)加载属性。尝试将属性从export s.yml移动到application.yml