Add proxy information and basic auth to the resttemplate using httpClient - spring

Question

My development environment is behind a proxy so i need to set the proxy information to the rest template, that's all good when i use a HttpComponentsClientHttpRequestFactory and set the proxy setting in the httpClient and set it in the template.
But now i have a rest service that needs basic auth. And to set the basic auth credentials, i need to set them in the httpClient on the rest template. But i see that the getparams method in the httpClient is depricated, so i can't just update the existing client in the template, and if i create a new httpclient object, i will overwrite the proxy info that were set during the application bootstrapping.
So is there some way that i could extract the httpClient from the rest template and update it? Or is there any other way to tackle this?
Thanks.

Answer 1

Configure the httpClient as follows:
HttpHost target = new HttpHost("hostname", 80, "http");
CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(
new AuthScope(target.getHostName(), target.getPort()),
new UsernamePasswordCredentials("user", "passwd"));
HttpHost proxy = new HttpHost("proxy", 12345);
CloseableHttpClient httpclient = HttpClients.custom()
.setProxy(proxy)
.setDefaultCredentialsProvider(credsProvider).build();
HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();
requestFactory.setHttpClient(httpclient);
RestTemplate restTemplate = new RestTemplate(requestFactory);
See also HttpClient Examples

Answer 2

The above solution did not work for me i work around the above and finally make it work with small modifications.
RestTemplate restTemplate = new RestTemplate();
HttpHost proxy =null;
RequestConfig config=null;
String credentials = this.env.getProperty("uname") + ":" + this.env.getProperty("pwd");
String encodedAuthorization = Base64.getEncoder().encodeToString(credentials.getBytes());
Header header = new BasicHeader(HttpHeaders.AUTHORIZATION, "Basic " + encodedAuthorization);
List<Header> headers = new ArrayList<>();
headers.add(header);
if(Boolean.valueOf(env.getProperty("proxyFlag"))){
proxy = new HttpHost(this.env.getProperty("proxyHost"), Integer.parseInt(env.getProperty("proxyPort")), "http");
config= RequestConfig.custom().setProxy(proxy).build();
}else{
config= RequestConfig.custom().build();
}
CloseableHttpClient httpClient = HttpClientBuilder.create().setDefaultRequestConfig(config)
.setDefaultHeaders(headers).build();
HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory(httpClient);
restTemplate.setRequestFactory(factory);
return restTemplate;