diff --git a/servers/boe-server-all/src/main/java/com/xboe/school/study/entity/StudyExam.java b/servers/boe-server-all/src/main/java/com/xboe/school/study/entity/StudyExam.java
index 5e55a9bc..18e833c5 100644
--- a/servers/boe-server-all/src/main/java/com/xboe/school/study/entity/StudyExam.java
+++ b/servers/boe-server-all/src/main/java/com/xboe/school/study/entity/StudyExam.java
@@ -117,7 +117,7 @@ public class StudyExam extends IdEntity {
     /*
     * 开始时间
     * */
-    @JsonFormat(pattern = "yyyy--MM-dd HH:mm:ss")
+    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
     @Column(name = "start_time")
     private LocalDateTime startTime;
     /*