初始化

common/js/lange.js

@@ -0,0 +1,74 @@
+const env = {
+	aliyunServerURL: 'https://czg-oss.oss-cn-beijing.aliyuncs.com',
+	accessid: 'LTAI5tMLHwnM1zYYAFuRa1fK',
+	AccessKeySecret: 'jS1h2STq1vcODczDNFQkjcU6ODyYAj',
+	timeout: 100000
+}
+
+const Base64 = require('./Base64.js');
+
+require('./hmac.js');
+require('./sha1.js');
+const Crypto = require('./crypto.js');
+
+
+const uploadFile = function(filePath, key = new Date().getTime()) {
+	return new Promise((resolve, reject) => {
+		// const aliyunFileKey = `${new Date().getTime()}_${userId}`;
+		const aliyunServerURL = env.aliyunServerURL;
+		const accessid = env.accessid;
+		const policyBase64 = getPolicyBase64();
+		const signature = getSignature(policyBase64);
+
+		wx.uploadFile({
+			url: aliyunServerURL, //仅为示例，非真实的接口地址
+			filePath: filePath,
+			name: 'file',
+			formData: {
+				'key': 'headportrait/' + key,
+				'OSSAccessKeyId': accessid,
+				'policy': policyBase64,
+				'Signature': signature,
+				'success_action_status': '200',
+			},
+			success: function(res) {
+				if (res.statusCode != 200) {
+					reject('上传错误:' + JSON.stringify(res))
+					return;
+				}
+				resolve(`https://czh5.sxczgkj.cn/headportrait/${key}`)
+			},
+			fail: function(err) {
+				reject('上传错误:' + JSON.stringify(err))
+			}
+		})
+	})
+}
+
+const getPolicyBase64 = function() {
+	let date = new Date();
+	date.setHours(date.getHours() + env.timeout);
+	let srcT = date.toISOString();
+	const policyText = {
+		"expiration": srcT, //设置该Policy的失效时间，超过这个失效时间之后，就没有办法通过这个policy上传文件了 指定了Post请求必须发生在2020年01月01日12点之前("2020-01-01T12:00:00.000Z")。
+		"conditions": [
+			["content-length-range", 0, 20 * 1024 * 1024] // 设置上传文件的大小限制,1048576000=1000mb
+		]
+	};
+
+	const policyBase64 = Base64.encode(JSON.stringify(policyText));
+	return policyBase64;
+}
+
+const getSignature = function(policyBase64) {
+	const accesskey = env.AccessKeySecret;
+
+	const bytes = Crypto.HMAC(Crypto.SHA1, policyBase64, accesskey, {
+		asBytes: true
+	});
+	const signature = Crypto.util.bytesToBase64(bytes);
+
+	return signature;
+}
+
+module.exports = uploadFile;