Merge branch 'dev_v3.3.1' into dev_v3.3.2

teachcloud-common/src/main/java/com/qmth/teachcloud/common/util/FileStoreUtil.java

@@ -247,6 +247,7 @@ public class FileStoreUtil {
     public String getPrivateUrlPrefix(String objectPath, String type) {
         String server = null;
         if ("public".equals(type)) {
+            server = dictionaryConfig.fssPublicDomain().getServer();
             return server + SystemConstant.ORG_SPLIT;
         } else if ("private".equals(type)) {
             Boolean oss = dictionaryConfig.sysDomain().isOss();