java HTTPClient 4.1 中带有文件和字符串的多部分 POST
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/5071568/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Multi-part POST with file and string in HTTPClient 4.1
提问by pecet
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.
我需要创建一个包含域多部分POST请求：
update[image_title] = String
update[image] = image-data itself。如您所见，两者都在称为“更新”的关联数组中。我怎么能用 HTTPClient 4.1 做到这一点，因为我只找到了这个库的 3.x 行的例子。
Thank you in advance.
先感谢您。
回答by Niks
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
可能为时已晚，但可能会帮助某人。我有完全相同的问题。假设您有一个文件对象，其中包含有关图像的必要信息
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();
}
Please note that MultiPartEntityis part of HttpMimemodule. So you need to put that jar in the lib directory or include as a (maven/gradle) dependency.
请注意，这MultiPartEntity是HttpMime模块的一部分。因此，您需要将该 jar 放在 lib 目录中或作为 (maven/gradle) 依赖项包含在内。
回答by mblinn
Yeah I've found it a real pain to find HTTP Client 4 examples, etc as well, since the almighty google almost always still points to HTTP 3.
是的，我发现找到 HTTP Client 4 示例等真的很痛苦，因为全能的谷歌几乎总是指向 HTTP 3。
At any rate, the last sample on this page - http://hc.apache.org/httpcomponents-client-ga/examples.htmlshould be what you want.
无论如何，此页面上的最后一个示例 - http://hc.apache.org/httpcomponents-client-ga/examples.html应该是您想要的。
