![image](https://user-images.githubusercontent.com/54169514/199922630-ba1b1417-e124-40b1-bac7-49158e2adbca.png)

文档上ApplicationConfig的enableFileCache属性默认true，但是在Dubbo3.1版本中，该属性似乎默认为null，导致mapping和元数据无法在本地缓存。

![image](https://user-images.githubusercontent.com/54169514/199923129-c99ea29b-45c5-40d1-bc21-1fbb44830fc7.png)

return metadataType;
    }
    public void setMetadataType(String metadataType) {
        this.metadataType = metadataType;
    }
    public Boolean getRegisterConsumer() {
        return registerConsumer;
    }
    public void setRegisterConsumer(Boolean registerConsumer) {
        this.registerConsumer = registerConsumer;
    }
    public String getRepository() {
        return repository;
    }
    public void setRepository(String repository) {
        this.repository = repository;
    }
    @Parameter(key = REGISTRY_LOCAL_FILE_CACHE_ENABLED)
    public Boolean getEnableFileCache() {
        return enableFileCache;
    }
    public void setEnableFileCache(Boolean enableFileCache) {
        this.enableFileCache = enableFileCache;
    }
    @Parameter(key = REGISTER_MODE_KEY)
    public String getRegisterMode() {
        return registerMode;
    }
    public void setRegisterMode(String registerMode) {
        this.registerMode = registerMode;