How to send strings to server using Java?

Question

I need to send a lot of strings to a web server using Java. I have a List<String> with huge amount of strings and I need to send it via POST request to the Struts2 action on the server side.

I have tried something starting with

HttpPost httppost = new HttpPost(urlStr);

but don't know how to use it.

On other side I have a Struts2 action, and getting the POST request is easy to me.

I think this solution is too close, but it doesn't solve my problem because it's using just one string : HTTP POST using JSON in Java

So, how to send many strings to a server using Java?

Answer 1

You should do somthing

HttpPost httppost = new HttpPost(url);
List<NameValuePair> params = new ArrayList<>();
for(String s : list) 
  params.add(new BasicNameValuePair("param", s));
httppost.setEntity(new UrlEncodedFormEntity(params, "UTF-8"));
HttpResponse response = httpclient.execute(httppost);

on the other side is an action mapped to the url has setter for param. It should be List<String> or String[]. The action when intercepted will populate that param property.