在客户端接收多部分响应(ClosableHttpResponse)

时间:2017-03-01 13:36:46

标签: java apache-httpclient-4.x multipart

我有一个java控制器,它必须向我发送一些文本数据和不同的字节数组。所以我正在构建n多部分请求并将其写入来自HttpServletResponse的流。

现在我的问题是如何在客户端解析响应并提取多个部分。

服务器代码链接: -

        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);

客户代码链接: -

        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,但没有一个提供解析多部分请求的方法。

编辑1: 这是我在客户端流收到的示例回复: -

--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--

2 个答案:

答案 0 :(得分:8)

我终于得到了解决方法。

我将使用javax邮件MimeMultipart。

以下是解决方案的代码: -

    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());
        }
    }

如果其他人有任何标准解决方案,请告诉我。

答案 1 :(得分:0)

来自Apache的Mime4j是一种解析客户端响应的方法。使用这样的工具是一种常见的做法。

您可以参考此链接 - http://www.programcreek.com/java-api-examples/index.php?api=org.apache.james.mime4j.MimeException

您可以从此链接下载jar - http://james.apache.org/download.cgi#Apache_Mime4J

希望这会有所帮助。干杯