在客户端接收多部分响应（ClosableHttpResponse）

Question

我有一个Java控制器，必须向我发送一些文本数据和不同的字节数组。因此，我正在构建n多部分请求，并将其写入到HttpServletResponse的流中。

现在我的问题是如何在客户端解析响应并提取多个部分。

服务器代码片段：-

        MultipartEntityBuilder builder = MultipartEntityBuilder.create();
        // Prepare payload
        builder.addBinaryBody("document1", file);
        builder.addBinaryBody("document2", file2);
        builder.addPart("stringData", new StringBody(jsonData, ContentType.TEXT_PLAIN));

        // Set to request body

        HttpEntity entity = builder.build();
        postRequest.setEntity(entity);

客户代码片段：-

        HttpPost httpPost = new HttpPost(finalUrl);

        StringEntity entity = new StringEntity(json);
        httpPost.setEntity(entity);
        httpPost.setHeader("Content-type", APPLICATION_JSON_TYPE);

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        CloseableHttpResponse response = httpClient.execute(httpPost);
        InputStream in = new BufferedInputStream(response.getEntity().getContent());

我检查了CloseableHttpResponse和HttpEntity，但是它们都不提供解析多部分请求的方法。

编辑1：这是我在客户端流中收到的示例响应：-

--bvRi5oZum37DUldtLgQGSbc5RRVZxKpjZMO4SYDe
Content-Disposition: form-data; name="numeric"
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
01010110
--bvRi5oZum37DUldtLgQGSbc5RRVZxKpjZMO4SYDe
Content-Disposition: form-data; name="stringmessage"
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding:8bit
testmessage
--bvRi5oZum37DUldtLgQGSbc5RRVZxKpjZMO4SYDe
Content-Disposition: form-data; name="binarydata"; filename="file1"
Content-Type: application/octet-stream
Content-Transfer-Encoding: binary
HI, THIS IS MY BINARY DATA
--bvRi5oZum37DUldtLgQGSbc5RRVZxKpjZMO4SYDe
Content-Disposition: form-data; name="ending"
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
ending
--bvRi5oZum37DUldtLgQGSbc5RRVZxKpjZMO4SYDe--

Answer 1

我终于有了解决方法。

我将使用javax邮件MimeMultipart。

以下是该解决方案的代码片段：-

    ByteArrayDataSource datasource = new ByteArrayDataSource(in, "multipart/form-data");
    MimeMultipart multipart = new MimeMultipart(datasource);

    int count = multipart.getCount();
    log.debug("count " + count);
    for (int i = 0; i < count; i++) {
        BodyPart bodyPart = multipart.getBodyPart(i);
        if (bodyPart.isMimeType("text/plain")) {
            log.info("text/plain " + bodyPart.getContentType());
            processTextData(bodyPart.getContent());
        } else if (bodyPart.isMimeType("application/octet-stream")) {
            log.info("application/octet-stream " + bodyPart.getContentType());
            processBinaryData(bodyPart.getInputStream()));
        } else {
            log.warn("default " + bodyPart.getContentType());
        }
    }

请让我知道是否还有其他标准解决方案。