google-app-engine - 从 Google App Engine 流式传输音频

Question

一般来说，是否可以从BlobStoreAppEngine 上流式传输音频文件？
如果是，那么从直接 url流式传输.mp3文件呢？

Answer 1

是的！！这是我的实现：

public class Serve extends HttpServlet {

    private static final long serialVersionUID = 5603629129606331547L;

    public void doGet(HttpServletRequest req, HttpServletResponse res) throws IOException {
        BlobKey blobKey = new BlobKey(req.getParameter("blob-key"));
        BlobstoreServiceFactory.getBlobstoreService().serve(blobKey, res);
    }
}

..这是web.xml：

<servlet>
        <servlet-name>Serve</servlet-name>
        <servlet-class><my-package>.Serve</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>Serve</servlet-name>
        <url-pattern>/serve</url-pattern>
    </servlet-mapping>

请注意“直接网址”（我认为您的意思是 getServingUrl）仅适用于图像： https ://developers.google.com/appengine/docs/java/images/overview#Transforming_Images_from_the_Blobstore