java - How to post files using JSoup?

Question

I`m using the following code post values using JSoup:

Document document = Jsoup.connect("http://www......com/....php")
                    .data("user","user","password","12345","email","[email protected]")
                    .method(Method.POST)
                    .execute()
                    .parse();

And now I want to submit a file, too. Like a form with a file field. Is this possible ? If is than how ?

Answer 1

This is only supported since Jsoup 1.8.2 (Apr 13, 2015) via the new data(String, String, InputStream) method.

String url = "http://www......com/....php";
File file = new File("/path/to/file.ext");

Document document = Jsoup.connect(url)
    .data("user", "user")
    .data("password", "12345")
    .data("email", "[email protected]")
    .data("file", file.getName(), new FileInputStream(file))
    .post();
// ...

In older versions, sending multipart/form-data requests is not supported. Your best bet is using a fullworthy HTTP client for this, such as Apache HttpComponents Client. You can ultimately get the HTTP client response as String so that you can feed it to Jsoup#parse() method.

String url = "http://www......com/....php";
File file = new File("/path/to/file.ext");

MultipartEntity entity = new MultipartEntity();
entity.addPart("user", new StringBody("user"));
entity.addPart("password", new StringBody("12345"));
entity.addPart("email", new StringBody("[email protected]"));
entity.addPart("file", new InputStreamBody(new FileInputStream(file), file.getName()));

HttpPost post = new HttpPost(url);
post.setEntity(entity);

HttpClient client = new DefaultHttpClient();
HttpResponse response = client.execute(post);
String html = EntityUtils.toString(response.getEntity());

Document document = Jsoup.parse(html, url);
// ...