初始化

src/api/upload.js

@@ -0,0 +1,47 @@
+
+const computeSignature = (accessKeySecret, canonicalString) => {
+    return crypto.enc.Base64.stringify(crypto.HmacSHA1(canonicalString, accessKeySecret));
+}
+
+export async function uploadOssByPath(filePath) {
+  return new Promise(async (resolve, reject) => {
+	  const date = new Date();
+	      date.setMinutes(date.getMinutes() + 1);
+	      const policyText = {
+	          expiration: date.toISOString(), // 设置policy过期时间。
+	          conditions: [
+	              // 限制上传大小。
+	              ["content-length-range", 0, 1024 * 1024 * 1024],
+	          ],
+	      };
+	  let sts = uni.getStorageSync('sts');
+	  let stsExpired = uni.getStorageSync('stsExpiredAt');
+	  if(!sts || (stsExpired && dayjs().isBefore(dayjs(stsExpired)))){
+	  	const {data: {data: {credentials}}} = await request.get(`${SERVER_API_URL}/oss/getSTSToken`)
+	  	uni.setStorageSync('sts', credentials)
+		uni.setStorageSync('stsExpiredAt', credentials.expiration)
+		sts = credentials
+	  }
+	  console.log(sts)
+	  const [filename, ext] = filePath.split('.')
+	  const key = `headers/${md5(filename + (Math.random() * 100000))}.${ext}`
+	  const policy = Base64.encode(JSON.stringify(policyText))
+	  const signature = computeSignature(sts.accessKeySecret, policy)
+	  uni.uploadFile({
+		  url: 'https://oss.wsdns.cn',
+		  name: 'file',
+		  filePath,
+		  formData: {
+			  key,
+			  policy,
+			  OSSAccessKeyId: sts.accessKeyId,
+			  signature,
+			  'x-oss-security-token': sts.securityToken
+		  },
+		  success: () => {
+			  resolve(`https://oss.wsdns.cn/${key}`)
+		  },
+		  error: (err) => reject(err)
+	  })
+  })
+}