Fix SonarCloud bug “Resources should be closed” (#1667)

#1666 Fix SonarCloud bug “Resources should be closed”

dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/utils/ZooKeeperState.java

@@ -55,7 +55,7 @@ public class ZooKeeperState {
 	public void getZookeeperInfo() {
 		String content = cmd("srvr");
 		if (StringUtils.isNotBlank(content)) {
-			Scanner scannerForStat = new Scanner(content);
+			try (Scanner scannerForStat = new Scanner(content))  {
 				while (scannerForStat.hasNext()) {
 					String line = scannerForStat.nextLine();
 					if (line.startsWith("Latency min/avg/max:")) {
@@ -77,19 +77,19 @@ public class ZooKeeperState {
 						nodeCount = Integer.parseInt(getStringValueFromLine(line));
 					}
 				}
-			scannerForStat.close();
+			} 	
 		}
 
 		String wchsText = cmd("wchs");
 		if (StringUtils.isNotBlank(wchsText)) {
-			Scanner scannerForWchs = new Scanner(wchsText);
+			try (Scanner scannerForWchs = new Scanner(wchsText)) {
 				while (scannerForWchs.hasNext()) {
 					String line = scannerForWchs.nextLine();
 					if (line.startsWith("Total watches:")) {
 						watches = Integer.parseInt(getStringValueFromLine(line));
 					}
 				}
-			scannerForWchs.close();
+			}	
 		}
 
 		String consText = cmd("cons");