Sample Java Code that Invokes the API

The following code is a generic example that demonstrates how to establish a session and use the returned session ID to retrieve business flows.This example uses basic authentication.

private static String userName = "GatewayAdmin";
private static String password = "Primavera1";
private static String hostName = "localhost";
private static String portNumber = "7001";
private static String getSessionUrl = "http://"+hostName+":"+portNumber+"/pdi/restapisession/usersession";
private static String getAppsUrl = "http://"+hostName+":"+portNumber+"/pdi/restapi/v1/flows/list";
private static String jsessionId;

public static void main(String s[]) throws Exception{
try {
//Call session api
String sessionJson = callRestURL(getSessionUrl,"GET");

//Convert the JSON to java object
ObjectMapper mapper = new ObjectMapper();
Session session = mapper.readValue(sessionJson, Session.class);
//Store session id
jsessionId = session.getSessionId();

// Get a list of Flow objects
String appsJson=callRestURL(getFlowsUrl,"GET");

//End the session object once all the operations are done
String deleteJson =
callRestURL(getSessionUrl+";JSESSIONID="+session.getSessionId(),"DELETE");

} catch (Exception e) {
e.printStackTrace();
throw e;
}
}

private static String callRestURL(String restUrl,String method) throws Exception {
HttpURLConnection conn = null;
try {
URL url = new URL(restUrl);
conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod(method);
conn.setRequestProperty("Accept", "application/json");
if(jsessionId != null){
conn.setRequestProperty("Cookie", "JSESSIONID="
+ jsessionId);
}

String userCredentials = userName+":"+password;
String base64Credentials javax.xml.bind.DatatypeConverter.printBase64Binary(userCredentials.getBytes());
String basicAuth = "Basic " + base64Credentials;
conn.setRequestProperty("Authorization", basicAuth);

if (conn.getResponseCode() != 200) {
throw new RuntimeException("Failed : HTTP error code : "
+ conn.getResponseCode());}

BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));

String output;
StringBuilder buff = new StringBuilder();
while ((output = br.readLine()) != null) {
buff.append(output);
}
return buff.toString();

} finally {
if(conn != null)
conn.disconnect();
}
}



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Last Published Wednesday, March 25, 2015