#### 获取上传参数 ~~~[api] get:/api/oss/getUploadPolicy <<< success { "code": 1, "msg": "", "time": "2018-01-03 22:21:56", "data": { "OSSAccessKeyId": "eP7m2AzVnR54KWhG", "host": "oss-cn-shenzhen.aliyuncs.com", "policy": "eyJleHBpcmF0aW9uIjoiMjAxOC0wMS0wM1QyMzoyMTo1NloiLCJjb25kaXRpb25zIjpbWyJjb250ZW50LWxlbmd0aC1yYW5nZSIsMCwxMDQ4NTc2MDAwXSxbInN0YXJ0cy13aXRoIiwiJGtleSIsInVwbG9hZHNcLzIwMThcLzAxXC8iXV19", "Signature": "r5lTn9o38BWo8uOADgu1acxDP6s=", "expire": 1514992916, "dir": "uploads/2018/01/" } } ~~~