cURL equivalent in JAVA

Question

I am tasked with writing an authentication component for an open source JAVA app. We have an in-house authentication widget that uses https. I have some example php code that accesses the widget which uses cURL to handle the transfer.

My question is whether or not there is a port of cURL to JAVA, or better yet, what base package will get me close enough to handle the task?

Update:

This is in a nutshell, the code I would like to replicate in JAVA:

$cp = curl_init();
$my_url = "https://" . AUTH_SERVER . "/auth/authenticate.asp?pt1=$uname&pt2=$pass&pt4=full";
curl_setopt($cp, CURLOPT_URL, $my_url);
curl_setopt($cp, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($cp);
curl_close($cp);

Heath, I think you're on the right track, I think I'm going to end up using HttpsURLConnection and then picking out what I need from the response.

score 65 · Accepted Answer · answered Sep 22 '08 at 18:48

65

Exception handling omitted:

HttpURLConnection con = (HttpURLConnection) new URL("https://www.example.com").openConnection();
con.setRequestMethod("POST");
con.getOutputStream().write("LOGIN".getBytes("UTF-8"));
con.getInputStream();

answered Sep 22 '08 at 18:48

Heath Borders

30,998
16
147
256

4

How would you add basic authentication to this? – BWelfel Sep 07 '10 at 23:11
6

@BWelfel, con.setRequestProperty("Authorization", "Basic dXNlcm5hbWU6cGFzc3dvcmQ="); //username:password base64 encoded – Chris Dale Jun 15 '11 at 21:03
`con.setDoOutput(true)` ? – Magno C Jul 07 '16 at 17:47

ScArcher2 · Answer 2 · 2008-09-22T20:08:46.607

22

I'd use the Commons Http Client. There is a contrib class in the project that allows you to use ssl.

We're using it and it's working well.

Edit: Here's the SSL Guide

edited Sep 22 '08 at 20:08

answered Sep 22 '08 at 18:58

ScArcher2

85,501
44
121
160

3

Update: That `Commons HttpClient` project is now end-of-life, and has been supplanted by the [`Apache HttpComponents™`](http://hc.apache.org/) project. – Basil Bourque Mar 16 '14 at 23:06

score 4 · Answer 3 · answered Mar 16 '14 at 23:01

4

jsoup

The jsoup library fetches a URL as the first step in its HTML scraping and parsing duties.

Document doc = Jsoup.connect("http://en.wikipedia.org/").get();

answered Mar 16 '14 at 23:01

Basil Bourque

303,325
100
852
1,154

score 1 · Answer 4 · answered Sep 22 '08 at 18:38

1

Try Apache Commons Net for network protocols. Free!

answered Sep 22 '08 at 18:38

Jason Cohen

81,399
26
107
114

No HTTP Client in this library, which is a shame because otherwise Apache Commons is very good (speaking from *experience*): http://commons.apache.org/net/ – therobyouknow Feb 05 '10 at 15:26

score 1 · Answer 5 · answered Sep 22 '08 at 18:44

1

You could also try [http://hc.apache.org/](HTTP Components) from the Apache Project if you need more features than the ones provided through Commons Net.

answered Sep 22 '08 at 18:44

WMR

12,661
5
35
30

score 0 · Answer 6 · edited Aug 02 '19 at 07:40

you can try curl-to-java lib to convert curl php code to java code https://github.com/jeffreyning/curl-to-java demo like this

public Object curl(String url, Object postData, String method) {

CurlLib curl = CurlFactory.getInstance("default");
ch = curl.curl_init();
curl.curl_setopt(ch, CurlOption.CURLOPT_CONNECTTIMEOUT, 1000);
curl.curl_setopt(ch, CurlOption.CURLOPT_TIMEOUT, 5000);
curl.curl_setopt(ch, CurlOption.CURLOPT_SSL_VERIFYPEER, false);
curl.curl_setopt(ch, CurlOption.CURLOPT_SSL_VERIFYHOST, false);
String postDataStr = "key1=v1";

curl.curl_setopt(ch, CurlOption.CURLOPT_CUSTOMREQUEST, "POST");
curl.curl_setopt(ch, CurlOption.CURLOPT_POSTFIELDS, postDataStr);
curl.curl_setopt(ch, CurlOption.CURLOPT_URL, "https://xxxx.com/yyy");
Object html = curl.curl_exec(ch);
Object httpCode = curl.curl_getinfo(ch, CurlInfo.CURLINFO_HTTP_CODE);
if (httpCode != null && 200 == Integer.valueOf(httpCode.toString())) {
    return null;
}
return html;
}

cURL equivalent in JAVA

6 Answers6

jsoup

Linked

Related