HttpClient官網提供的Demo如下(配置代理服務器):
package org.apache.http.examples.client;
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
/**
* A simple example that uses HttpClient to execute an HTTP request
* over a secure connection tunneled through an authenticating proxy.
*/
public class ClientProxyAuthentication {
public static void main(String[] args) throws Exception {
CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(
new AuthScope("localhost", 8888),
new UsernamePasswordCredentials("squid", "squid"));
CloseableHttpClient httpclient = HttpClients.custom()
.setDefaultCredentialsProvider(credsProvider).build();
try {
HttpHost target = new HttpHost("httpbin.org", 80, "http");
HttpHost proxy = new HttpHost("localhost", 8888);
RequestConfig config = RequestConfig.custom()
.setProxy(proxy)
.build();
HttpGet httpget = new HttpGet("/basic-auth/user/passwd");
httpget.setConfig(config);
System.out.println("Executing request " + httpget.getRequestLine() + " to " + target + " via " + proxy);
CloseableHttpResponse response = httpclient.execute(target, httpget);
try {
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
System.out.println(EntityUtils.toString(response.getEntity()));
} finally {
response.close();
}
} finally {
httpclient.close();
}
}
}
攜帶SSL證書
package org.apache.http.examples.client;
import java.io.File;
import javax.net.ssl.SSLContext;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.util.EntityUtils;
/**
* This example demonstrates how to create secure connections with a custom SSL
* context.
*/
public class ClientCustomSSL {
public final static void main(String[] args) throws Exception {
// Trust own CA and all self-signed certs
SSLContext sslcontext = SSLContexts.custom()
.loadTrustMaterial(new File("my.keystore"), "nopassword".toCharArray(),
new TrustSelfSignedStrategy())
.build();
// Allow TLSv1 protocol only
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
sslcontext,
new String[] { "TLSv1" },
null,
SSLConnectionSocketFactory.getDefaultHostnameVerifier());
CloseableHttpClient httpclient = HttpClients.custom()
.setSSLSocketFactory(sslsf)
.build();
try {
HttpGet httpget = new HttpGet("https://httpbin.org/");
System.out.println("Executing request " + httpget.getRequestLine());
CloseableHttpResponse response = httpclient.execute(httpget);
try {
HttpEntity entity = response.getEntity();
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
EntityUtils.consume(entity);
} finally {
response.close();
}
} finally {
httpclient.close();
}
}
}
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