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- 使用用户的永久密钥在用户管理中申请
- ==开放cos的CORS==，设置CORS 操作范围，CORS 来源需要设置
- 按照官方文档中即可上传成功
- ==后面需要改进的地方==，创建SpringBoot COS 后台，用来生成临时密钥，通过临时密钥，事项文件上传