Can some one guide me how can I configure HttpComponentsClientHttpRequestFactory
to use proxy server.
All examples I have seen are using SimpleClientH
Very simple way to let the HttpComponentsClientHttpRequestFactory use the standard java SystemProperties for proxy-stuff (see https://docs.oracle.com/javase/8/docs/technotes/guides/net/proxies.html)
is this:
HttpRoutePlanner routePlanner = new SystemDefaultRoutePlanner(ProxySelector.getDefault());
HttpClient httpClient = HttpClientBuilder
.create()
.setRoutePlanner(routePlanner)
.build();
restTemplate.setRequestFactory(
new HttpComponentsClientHttpRequestFactory(httpClient));
That way, it even regards the nonProxyHosts setting.
If you do not mind using Apache Http Client it is not very complicated and there are 2 possibilities:
If single proxy for all targets is enough for you:
HttpComponentsClientHttpRequestFactory clientHttpRequestFactory
= new HttpComponentsClientHttpRequestFactory(
HttpClientBuilder.create()
.setProxy(new HttpHost("myproxy.com", 80, "http"))
.build());
restTemplate = new RestTemplate(clientHttpRequestFactory);
Or if you want to use different proxies for different target URIs, schemas, etc. you can use HttpRoutePlanner
with custom ProxySelector
:
HttpRoutePlanner routePlanner = new SystemDefaultRoutePlanner(new MyProxySelector());
HttpComponentsClientHttpRequestFactory clientHttpRequestFactory
= new HttpComponentsClientHttpRequestFactory(
HttpClientBuilder.create()
.setRoutePlanner(routePlanner)
.build());
restTemplate = new RestTemplate(clientHttpRequestFactory);
Example proxy selector: MyProxySelector.java
:
package hello;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.Proxy.Type;
import java.net.ProxySelector;
import java.net.SocketAddress;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
public class MyProxySelector extends ProxySelector {
ProxySelector defaultproxySelector = ProxySelector.getDefault();
ArrayList<Proxy> noProxy = new ArrayList<Proxy>();
ArrayList<Proxy> secureProxy = new ArrayList<Proxy>();
ArrayList<Proxy> sociaMediaProxy = new ArrayList<Proxy>();
public MyProxySelector(){
noProxy.add(Proxy.NO_PROXY);
secureProxy.add(new Proxy(Type.HTTP, new InetSocketAddress(
"secure.proxy.mycompany.com", 8080)));
sociaMediaProxy.add(new Proxy(Type.HTTP, new InetSocketAddress(
"social-media.proxy.mycompany.com", 8080)));
}
@Override
public List<Proxy> select(URI uri) {
// No proxy for local company addresses.
if ( uri.getHost().toLowerCase().endsWith("mycompany.com") ) {
return noProxy ;
}
// Special proxy for social networks.
String host = uri.getHost().toLowerCase();
if ( host.endsWith("facebook.com") ||
host.endsWith("twitter.com") ||
host.endsWith("cfapps.io") ||
host.endsWith("flickr.com") )
{
return sociaMediaProxy ;
}
// for https URIs use secureProxy
if ( uri.getScheme().toLowerCase().equals("https") ){
return secureProxy ;
}
if (defaultproxySelector != null) {
return defaultproxySelector.select(uri);
}
return noProxy;
}
@Override
public void connectFailed(URI arg0, SocketAddress arg1, IOException arg2) {
// TODO Auto-generated method stub
}
}