在HTTPClient 4.1中使用文件和字符串进行多部分POST [英] Multi-part POST with file and string in HTTPClient 4.1

问题描述

我需要创建包含字段的多部分POST请求：
update [image_title] = String
update [image] = image-data本身。
正如你所看到的，两者都在称为更新的关联数组中。
我怎么能用HTTPClient 4.1来做，因为我只发现了这个库的3.x行的例子。

I need to create Multi-part POST request containing fields: update[image_title] = String update[image] = image-data itself. As you can see both are in associative array called "update". How could I do it with HTTPClient 4.1, because I found only examples for 3.x line of this library.

提前谢谢。

推荐答案

可能为时已晚，但可能帮助他人。我有完全相同的问题。
假设你有一个文件对象，其中包含有关图像的必要信息

Probably too late but might help someone. I had the exact same issue. Assuming that you have a file object which has necessary information about the image

HttpPost post = new HttpPost(YOUR_URL);
MultipartEntity entity = new MultipartEntity();
ByteArrayBody body = new ByteArrayBody(file.getData(), file.getName());     
String imageTitle = new StringBody(file.getName());

entity.addPart("imageTitle", imageTitle);
entity.addPart("image", body);
post.setEntity(entity);
HttpClient client = new DefaultHttpClient();
HttpResponse response = null;
    try {
        response = client.execute(post);
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

请注意 MultiPartEntity 是 HttpMime 模块的一部分。因此，您需要将该jar放在lib目录中或包含为（maven / gradle）依赖项。

Please note that MultiPartEntity is part of HttpMime module. So you need to put that jar in the lib directory or include as a (maven/gradle) dependency.

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