...

examcloud-exchange-outer-service/src/main/java/cn/com/qmth/examcloud/exchange/outer/service/FaceppService.java

@@ -184,7 +184,7 @@ public class FaceppService {
 			throw new StatusException("B-101001", "文件格式错误");
 		}
 
-		String identityNumber = fileName.substring(0, fileName.lastIndexOf(fileName));
+		String identityNumber = fileName.substring(0, fileName.lastIndexOf("."));
 
 		GetStudentReq req = new GetStudentReq();
 		req.setIdentityNumber(identityNumber);