Java-jersey2: record status code and response headers of last request

modules/swagger-codegen/src/main/resources/Java/libraries/jersey2/ApiClient.mustache

@@ -53,6 +53,9 @@ public class ApiClient {
 
   private Map<String, Authentication> authentications;
 
+  private int statusCode;
+  private Map<String, List<String>> responseHeaders;
+
   private DateFormat dateFormat;
 
   public ApiClient() {
@@ -84,6 +87,20 @@ public class ApiClient {
     return this;
   }
 
+  /**
+   * Gets the status code of the previous request
+   */
+  public int getStatusCode() {
+    return statusCode;
+  }
+
+  /**
+   * Gets the response headers of the previous request
+   */
+  public Map<String, List<String>> getResponseHeaders() {
+    return responseHeaders;
+  }
+
   /**
    * Get authentications (key: authentication name, value: authentication).
    */
@@ -484,6 +501,9 @@ public class ApiClient {
       throw new ApiException(500, "unknown method type " + method);
     }
 
+    statusCode = response.getStatusInfo().getStatusCode();
+    responseHeaders = buildResponseHeaders(response);
+
     if (response.getStatus() == Status.NO_CONTENT.getStatusCode()) {
       return null;
     } else if (response.getStatusInfo().getFamily().equals(Status.Family.SUCCESSFUL)) {
@@ -502,23 +522,27 @@ public class ApiClient {
           // e.printStackTrace();
         }
       }
-      Map<String, List<String>> responseHeaders = new HashMap<String, List<String>>();
-      for (String key: response.getHeaders().keySet()) {
-        List<Object> values = response.getHeaders().get(key);
-        List<String> headers = new ArrayList<String>();
-        for (Object o : values) {
-          headers.add(String.valueOf(o));
-        }
-        responseHeaders.put(key, headers);
-      }
       throw new ApiException(
         response.getStatus(),
         message,
-        responseHeaders,
+        buildResponseHeaders(response),
         respBody);
     }
   }
 
+  private Map<String, List<String>> buildResponseHeaders(Response response) {
+    Map<String, List<String>> responseHeaders = new HashMap<String, List<String>>();
+    for (Entry<String, List<Object>> entry: response.getHeaders().entrySet()) {
+      List<Object> values = entry.getValue();
+      List<String> headers = new ArrayList<String>();
+      for (Object o : values) {
+        headers.add(String.valueOf(o));
+      }
+      responseHeaders.put(entry.getKey(), headers);
+    }
+    return responseHeaders;
+  }
+
   /**
    * Update query and header parameters based on authentication settings.
    *