diff --git a/src/main/java/club/joylink/xiannccda/configuration/JsonConfig.java b/src/main/java/club/joylink/xiannccda/configuration/JsonConfig.java
index b1894b5..7f2c4dc 100644
--- a/src/main/java/club/joylink/xiannccda/configuration/JsonConfig.java
+++ b/src/main/java/club/joylink/xiannccda/configuration/JsonConfig.java
@@ -10,6 +10,7 @@ import com.alibaba.fastjson2.writer.ObjectWriter;
 import java.lang.reflect.Type;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
+import org.apache.commons.lang3.StringUtils;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
@@ -47,6 +48,9 @@ public class JsonConfig implements ApplicationRunner {
       public LocalDateTime readObject(JSONReader jsonReader, Type fieldType, Object fieldName,
           long features) {
         String str = jsonReader.readString();
+        if (StringUtils.isEmpty(str)) {
+          return null;
+        }
         return LocalDateTime.parse(str, DATE_TIME_FORMATTER);
       }
     });