Merge pull request #114 from jumpserver/pr@v3@fix_pg_blob_1

feat: fix pg blob

Author: Aaron3S

backend/framework/src/main/java/org/jumpserver/chen/framework/datasource/base/BaseSQLActuator.java

@@ -171,7 +171,7 @@ private void executeStatement(SQLExecutePlan plan, Statement statement, SQLQuery
                                 fs.add(HexUtils.bytesToHex((byte[]) obj));
                             } else if (obj instanceof Blob) {
                                 fs.add(HexUtils.bytesToHex(((Blob) obj).getBytes(1, (int) ((Blob) obj).length())));
-                            } else if (obj.getClass().getSimpleName().equalsIgnoreCase("pgobject")) {
+                            } else if (obj!= null && obj.getClass().getSimpleName().equalsIgnoreCase("pgobject")) {
                                 fs.add(obj.toString());
                             } else {
                                 fs.add(obj);