Merge pull request #88 from dataease/pr@dev@fix_check_kettle_status

backend/src/main/java/io/dataease/service/dataset/ExtractDataService.java

@@ -33,6 +33,7 @@ import org.apache.commons.lang3.exception.ExceptionUtils;
 import org.apache.http.HttpResponse;
 import org.apache.http.client.HttpClient;
 import org.apache.http.client.methods.HttpGet;
+import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.poi.hssf.usermodel.HSSFSheet;
 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
 import org.apache.poi.xssf.usermodel.XSSFSheet;
@@ -838,7 +839,7 @@ public class ExtractDataService {
             if (!InetAddress.getByName(carte).isReachable(1000)) {
                 return false;
             }
-            HttpClient httpClient;
+            CloseableHttpClient httpClient;
             HttpGet getMethod = new HttpGet("http://" + carte + ":" + port);
             HttpClientManager.HttpClientBuilderFacade clientBuilder = HttpClientManager.getInstance().createBuilder();
             clientBuilder.setConnectionTimeout(1);