资料查询电签校验，PDF中获取为空

blade-service/blade-business/src/main/java/org/springblade/business/controller/EVisaTaskCheckController.java

@@ -589,6 +589,9 @@ public class EVisaTaskCheckController {
         } else {
             //资料填报
             List<String> ids = PDFUtil.getPdfSignIds(eVisaPDFUrl);
+            if (ids == null || ids.size() == 0){
+                return null;
+            }
             String sql = "select * from m_textdict_info where id in(" + StringUtils.join(ids, ",") + ") ";
             List<TextdictInfo> query = jdbcTemplate.query(sql, new BeanPropertyRowMapper<>(TextdictInfo.class));
             jsonList = JSONArray.parseArray(JSONObject.toJSONString(query), JSONObject.class);