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27 package org.apache.hc.client5.http.examples;
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29 import org.apache.hc.client5.http.auth.UsernamePasswordCredentials;
30 import org.apache.hc.client5.http.classic.methods.HttpGet;
31 import org.apache.hc.client5.http.impl.auth.BasicScheme;
32 import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
33 import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;
34 import org.apache.hc.client5.http.impl.classic.HttpClients;
35 import org.apache.hc.client5.http.protocol.HttpClientContext;
36 import org.apache.hc.core5.http.HttpHost;
37 import org.apache.hc.core5.http.io.entity.EntityUtils;
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47 public class ClientPreemptiveBasicAuthentication {
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49 public static void main(final String[] args) throws Exception {
50 try (final CloseableHttpClient httpclient = HttpClients.createDefault()) {
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53 final BasicScheme basicAuth = new BasicScheme();
54 basicAuth.initPreemptive(new UsernamePasswordCredentials("user", "passwd".toCharArray()));
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56 final HttpHost target = new HttpHost("http", "httpbin.org", 80);
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59 final HttpClientContext localContext = HttpClientContext.create();
60 localContext.resetAuthExchange(target, basicAuth);
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62 final HttpGet httpget = new HttpGet("http://httpbin.org/hidden-basic-auth/user/passwd");
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64 System.out.println("Executing request " + httpget.getMethod() + " " + httpget.getUri());
65 for (int i = 0; i < 3; i++) {
66 try (final CloseableHttpResponse response = httpclient.execute(httpget, localContext)) {
67 System.out.println("----------------------------------------");
68 System.out.println(response.getCode() + " " + response.getReasonPhrase());
69 System.out.println(EntityUtils.toString(response.getEntity()));
70 }
71 }
72 }
73 }
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75 }