Merge pull request #1760 from QianNangong/patch-3

修复一个可能触发 NPE 的问题

src/main/java/com/genersoft/iot/vmp/media/bean/MediaInfo.java

@@ -10,6 +10,8 @@ import lombok.Data;
 import java.util.List;
 import java.util.Map;
 
+import org.springframework.util.ObjectUtils;
+
 /**
  * 视频信息
  */
@@ -82,6 +84,8 @@ public class MediaInfo {
         Long bytesSpeed = jsonObject.getLong("bytesSpeed");
         if (totalReaderCount != null) {
             mediaInfo.setReaderCount(totalReaderCount);
+        } else {
+            mediaInfo.setReaderCount(0);
         }
         if (online != null) {
             mediaInfo.setOnline(online);
@@ -106,7 +110,7 @@ public class MediaInfo {
             }
         }
         JSONArray jsonArray = jsonObject.getJSONArray("tracks");
-        if (!jsonArray.isEmpty()) {
+        if (!ObjectUtils.isEmpty(jsonArray)) {
             for (int i = 0; i < jsonArray.size(); i++) {
                 JSONObject trackJson = jsonArray.getJSONObject(i);
                 Integer channels = trackJson.getInteger("channels");