CODEWITHSUNDEEP
javaapachepost
user1762250
user1762250

Reputation: 125

Java Apache HttpComponents, how to read POST response?

I am using HttpComponents in Java to POST login information to a website. After I log in, I would like to send more POST data, depending on the webpage returned. I am unsure how to actually print out or view the html/webpage that the server returns as a result of sending my POST data (perhaps what I am looking for is the response body?).

All the tutorials only seem to show how to view header information or server codes. I think it is probably something simple I am missing. It is possible that perhaps I do not understand this process well.

My code so far:

public class httpposter {
    public static void main(String[] args) throws Exception {
        DefaultHttpClient httpclient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost("http://hroch486.icpf.cas.cz/cgi-bin/echo.pl");
        List <NameValuePair> nvps = new ArrayList <NameValuePair>();
        nvps.add(new BasicNameValuePair("username", "vip"));
        nvps.add(new BasicNameValuePair("password", "secret"));
        httpPost.setEntity(new UrlEncodedFormEntity(nvps));
        HttpResponse response2 = httpclient.execute(httpPost);
        try {
            System.out.println(response2);
            HttpEntity entity2 = response2.getEntity();
            // do something useful with the response body
            // and ensure it is fully consumed
            EntityUtils.consume(entity2);
        } finally {
            httpPost.releaseConnection(); }} }

Upvotes: 3

Views: 1741

Answers (1)

Brian Roach
Brian Roach

Reputation: 76898

I'm guessing you copied and pasted this code?

HttpEntity entity2 = response2.getEntity();
// do something useful with the response body
// and ensure it is fully consumed
EntityUtils.consume(entity2);

Javadocs are your friend: HttpEntity Javadocs

The IOUtils makes this even easier:

String body = IOUtils.toString(entity2.getContent(), "UTF-8");

Upvotes: 4

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