mac 下 nacos 启动时加载 datum 的缓存文件出现 json 转换异常

[lin-mt]

Issue Description

Type: bug report or feature request

Describe what happened (or what feature you want)

nacos 启动时加载 datum 缓存文件报错，在 com.alibaba.nacos.naming.consistency.persistent.raft.RaftStore#readDatum 方法中加载目录~/nacos/data/naming/data 下的缓存文件时没有判断缓存文件是否为 nacos 生成的缓存，Mac 系统会自动生成 .Ds_Store 文件，导致在方法中的 return JSON.parseObject(json, Datum.class); 会报 json 转换异常。

Error loading datum cache file at Nacos startup, at com.alibaba.nacos.Naming.consistency.persistent.Raft.RaftStore#readDatum The method loads the cache file under directory ~/nacos/data/naming/data without determining whether the cache file is a nacos-generated cache. The Mac system automatically generates .DS_Store file, resulting in return JSON.parseObject(json,Datum.class); a json conversion exception will be reported.

Describe what you expected to happen

How to reproduce it (as minimally and precisely as possible)

Tell us your environment

macOS Catalina 10.15.4
nacos-version: 1.3.0-BETA

Anything else we need to know?

我想通过加后缀来解决这个问题。
I want to solve this problem by adding a suffix.
@i will solve it@