Spring Boot注入来自application.yml的地图列表

Question

我试图从Spring Boot配置注入映射列表，但得到一个空列表。如何正确注入？

cacheConfigs:
  - cacheOne:
       test: test1
  - cacheTwo:
       test: test2
  - cacheThree:
       test: test3
  - cacheFor:
       test: test4

@ConfigurationProperties(prefix = "cacheConfigs")
public List<Map<String, String>> getCacheConfigs() {
    return new ArrayList<>();
}

Answer 1

这对我来说是“新的”。我通过将缓存配置更深一层并使用新的顶级名称作为配置属性参数来实现这一点。这样地：

cache-configs-map:
  cacheConfigs: 
    - cacheOne:
        test: test1
    - cacheTwo:
        test: test2
    - cacheThree:
        test: test3
    - cacheFor:
        test: test4

现在，您的配置类如下所示：

@Configuration
public class Config{
    @NoArgsConstructor @AllArgsConstructor( staticName = "of" )
    @Getter @Setter
    public static class C{
        private List<Map<String, String>> cacheConfigs;
    }
    
    @Bean
    @ConfigurationProperties(prefix = "cache-configs-map")
    public C getC() {
        return new C();
    }
}