数据为空处理

src/main/java/com/jeeplus/modules/projectFilingBatch/service/ProjectFilingBatchService.java

@@ -410,7 +410,9 @@ public class ProjectFilingBatchService extends CrudService<ProjectFilingBatchDao
                 filingbatchRelation.setProjectId(filingBatch.getProjectId());
                 projectFilingbatchRelationDao.deleteByprojectId(filingbatchRelation);
             }
-            prefixStr = prefixStr.substring(0, prefixStr.length()-1);
+            if (StringUtils.isNotBlank(prefixStr)){
+                prefixStr = prefixStr.substring(0, prefixStr.length()-1);
+            }
             projectFilingBatch.setReportNumber(prefixStr);
             super.save(projectFilingBatch);
         }else{