Question

我正在创建一个应用程序，我需要在邮件中附加文件，然后将该完整文件作为另一个名为＆＃39; asana＆＃39;的门户API的输入发送。我不想在本地保存/下载文件。

我引用了这个site来通过邮件获取附件。但是，我需要将文件发送到＆＃39; asana＆＃39; API没有下载它。以下是通过API发送文件的asana API代码。

String url = "https://app.asana.com/api/1.0/tasks/"+asanaActivitiesDto.getTaskId()+"/attachments";
            HttpClient client = new DefaultHttpClient();
            HttpPost post = new HttpPost(url);
            post.setHeader("Authorization", "Bearer " + asanaActivitiesDto.getBearerToken());

            MultipartEntityBuilder builder = MultipartEntityBuilder.create();
            builder.addTextBody("task", jsonInput.get("taskId").toString(), ContentType.TEXT_PLAIN);
            // now here I actually want file from attachment of the mail
           // currently taking file from local for testing
            File f = new File(asanaActivitiesDto.getFile());
            builder.addBinaryBody(
                "file",
                //Here, as a second input, I need to set file from the 
                //attachment of the mail
                new FileInputStream(f),
                ContentType.APPLICATION_OCTET_STREAM,
                f.getName()
            );
            HttpEntity multipart = builder.build();
            post.setEntity(multipart);
            HttpResponse response = client.execute(post);
            HttpEntity responseEntity = response.getEntity();

            System.out.println("\nSending 'POST' request to URL : " + url);
            System.out.println("Post parameters : " + post.getEntity());
            System.out.println("Response Code : " + response.getStatusLine().getStatusCode());
            BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
            StringBuffer result = new StringBuffer();
            String line = "";
            while ((line = rd.readLine()) != null) {
                result.append(line);
            }
            System.out.println(result.toString());
            JSONParser parser = new JSONParser();
            jsonOutput = (JSONObject) parser.parse(result.toString());

在 new FileInputStream（f）的地方，我需要发送附加到该邮件的文件。有什么方法可以做同样的事情？

Answer 1

您只需将电子邮件附件中的数据作为InputStream读取即可。尝试类似：

        mbp = // the MimeBodyPart containing the attachment
        builder.addBinaryBody(
            "file",
            mbp.getInputStream(),
            ContentType.APPLICATION_OCTET_STREAM,
            mbp.getFileName()
        );

如何从java中的邮件附件获取完整文件以通过其他API输入发送它？

1 个答案: