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<h1>SVS Client Java Example</h1>
<h1>VSAC SVS API Client Java Example</h1>
<p>This Java example is for Java developers to use and modify when they wish to make a VSAC SVS API call from within their program.</p>
<pre>
import java.io.IOException;
import java.net.URI;
import java.util.Base64;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;
import org.springframework.http.HttpHeaders;
public class SvsClient {
public static void main(String[] args) throws IOException {
String svsServerBase = "https://vsac.nlm.nih.gov/vsac/svs/";
String username = "";
String password = "d4c9d78b-83dc-499e-ae27-947cc00fb438"; // Assign an API key to password
HttpClient client = HttpClientBuilder.create().build();
try {
String valueToEncode = username + ":" + password;
String basicAuthHeader = "Basic " + Base64.getEncoder().encodeToString(valueToEncode.getBytes());
String testUrl = svsServerBase + "RetrieveMultipleValueSets";
HttpGet httpGet = new HttpGet(testUrl);
URI uri = new URIBuilder(httpGet.getURI()).addParameter("id", "2.16.840.1.113762.1.4.1029.256").build(); // VSAC OID example
httpGet.setURI(uri);
httpGet.setHeader(HttpHeaders.AUTHORIZATION, basicAuthHeader);
HttpResponse response = client.execute(httpGet);
String responseString = EntityUtils.toString(response.getEntity());
System.out.println(responseString);
} catch (Exception e) {
e.printStackTrace();
}
}
}
</pre>
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<p><small>Last Reviewed: September 7, 2023</small></p>
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