初始化项目：添加后端代码、ThinkPHP框架、前端资源

addons/alioss/library/OSS/Result/InitiateMultipartUploadResult.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace OSS\Result;
+
+use OSS\Core\OssException;
+
+
+/**
+ * Class initiateMultipartUploadResult
+ * @package OSS\Result
+ */
+class InitiateMultipartUploadResult extends Result
+{
+    /**
+     * 结果中获取uploadId并返回
+     *
+     * @throws OssException
+     * @return string
+     */
+    protected function parseDataFromResponse()
+    {
+        $content = $this->rawResponse->body;
+        $xml = simplexml_load_string($content);
+        if (isset($xml->UploadId)) {
+            return strval($xml->UploadId);
+        }
+        throw new OssException("cannot get UploadId");
+    }
+}