java - Spring RestTemplate and Proxy Auth -

i'm trying rest calls spring. understand, right way go using resttemplate(?). problem is, i'm behind proxy.

this code right now:

    simpleclienthttprequestfactory factory = new simpleclienthttprequestfactory();     inetsocketaddress address = new inetsocketaddress(host, 3128);     proxy proxy = new proxy(proxy.type.http, address);     factory.setproxy(proxy);      resttemplate resttemplate = new resttemplate();     resttemplate.setrequestfactory(factory); 

seems work, need authenticate @ proxy, how done? proxy type simpleclienthttprequestfactory type don't seem handle credentials. without credentials, i'm getting 407...

after quite few different options settled on below code due ability set proxy resttemplate @ creation refactor separate method. note has additional dependency keep in mind.

    private resttemplate createresttemplate() throws exception {         final string username = "myusername";         final string password = "mypass";         final string proxyurl = "proxy.nyc.bigtower.com";         final int port = 8080;          credentialsprovider credsprovider = new basiccredentialsprovider();         credsprovider.setcredentials(                  new authscope(proxyurl, port),                  new usernamepasswordcredentials(username, password));          httphost myproxy = new httphost(proxyurl, port);         httpclientbuilder clientbuilder = httpclientbuilder.create();          clientbuilder.setproxy(myproxy).setdefaultcredentialsprovider(credsprovider).disablecookiemanagement();          httpclient httpclient = clientbuilder.build();         httpcomponentsclienthttprequestfactory factory = new httpcomponentsclienthttprequestfactory();         factory.sethttpclient(httpclient);          return new resttemplate(factory);     } 

//dependencies used.

    <dependency>         <groupid>org.apache.httpcomponents</groupid>         <artifactid>httpclient</artifactid>         <version>4.5.2</version>     </dependency>     <dependency>         <groupid>org.springframework</groupid>         <artifactid>spring-web</artifactid>         <version>4.2.5.release</version>     </dependency>