我正在使用apache HttpClient将几个文件发布到服务器。这是代码:

    public static HttpResponse stringResponsePost(String urlString, String content, byte[] image,
        HttpContext localContext, HttpClient httpclient) throws Exception {

    URL url = new URL(URLDecoder.decode(urlString, "utf-8"));
    URI u = url.toURI();

    HttpPost post = new HttpPost();
    post.setURI(u);

    MultipartEntity reqEntity = new MultipartEntity();
    StringBody sb = new StringBody(content, HTTP_CONTENT_TYPE_JSON, Charset.forName("UTF-8"));
    ByteArrayBody ib = new ByteArrayBody(image, HTTP_CONTENT_TYPE_JPEG, "image");

    reqEntity.addPart("interview_data", sb);
    reqEntity.addPart("interview_image", ib);
    post.setEntity(reqEntity);

    HttpResponse response = null;
    response = httpclient.execute(post, localContext);

    return response;
}

问题是,MultipartEntity类仅具有isChunked()方法(始终返回false),如果我希望为我的多部分实体启用被阻止的编码,则没有“setChunked(boolean)”选项。

我的问题是:
  • 根据协议规范,HTTP多部分和块可以共存吗?如果不是,为什么其他实体(例如InputStreamEntity类)具有setChunked(boolean)MultipartEntity没有?
  • 是否有任何方法可以启用分块功能一次发布多个文件,最好是使用apache库?
  • 最佳答案

    为我的第二个问题找到了解决方案,诀窍是将MultipartEntity写入ByteArrayOutputStream,从ByteArrayEntity创建ByteArrayOutputStream并在其上启用分块。这是代码:

        ByteArrayOutputStream bArrOS = new ByteArrayOutputStream();
        // reqEntity is the MultipartEntity instance
        reqEntity.writeTo(bArrOS);
        bArrOS.flush();
        ByteArrayEntity bArrEntity = new ByteArrayEntity(bArrOS.toByteArray());
        bArrOS.close();
    
        bArrEntity.setChunked(true);
        bArrEntity.setContentEncoding(reqEntity.getContentEncoding());
        bArrEntity.setContentType(reqEntity.getContentType());
    
        // Set ByteArrayEntity to HttpPost
        post.setEntity(bArrEntity);
    

    07-26 05:33