是否存在Java实用程序来生成HTTP多部分响应? [英] Is there a java utility to produce http multi-part responses?

问题描述

我正在构建一个返回多部分响应的Web服务.我知道构造多部分响应的格式；如果找不到现有工具，我将构建自己的工具.

I am building a web-service that returns a multipart response. I know the format for constructing a multi-part response; and I will build my own tools if I can't find existing tools.

也许我只需要有关Google-foo的帮助.我发现的所有内容都与发布或使用多部分消息有关.不会产生多部分响应.

Perhaps I just need help with my google-foo. Everything I find is about POSTing or consuming multi-part messages. Nothing about producing multi-part responses.

推荐答案

您可以使用oreilly servlets http://www.servlets.com /cos/

You can use oreilly servlets http://www.servlets.com/cos/

javadoc中有一个示例: http://www.servlets.com/cos/javadoc/com/oreilly/servlet/MultipartResponse.html

An example is in the javadoc: http://www.servlets.com/cos/javadoc/com/oreilly/servlet/MultipartResponse.html

import com.oreilly.servlet.MultipartResponse

//javax.servlet.http.HttpServletResponse res
MultipartResponse multi = new MultipartResponse(res);

multi.startResponse("text/plain");
out.println("On your mark");
multi.endResponse();

try { Thread.sleep(1000); } catch (InterruptedException e) { }

multi.startResponse("text/plain");
out.println("Get set");
multi.endResponse();

try { Thread.sleep(1000); } catch (InterruptedException e) { }

multi.startResponse("image/gif");
ServletUtils.returnFile(req.getRealPath("/images/go.gif"), out);

multi.finish();

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