diff --git a/snowy-web-app/src/main/java/vip/xiaonuo/core/config/JacksonConfig.java b/snowy-web-app/src/main/java/vip/xiaonuo/core/config/JacksonConfig.java
index cc2ae5fc..0b0c97fc 100644
--- a/snowy-web-app/src/main/java/vip/xiaonuo/core/config/JacksonConfig.java
+++ b/snowy-web-app/src/main/java/vip/xiaonuo/core/config/JacksonConfig.java
@@ -95,6 +95,8 @@ public class JacksonConfig {
                     gen.writeNumber(0);
                 } else if (type == Boolean.class) {
                     gen.writeBoolean(false);
+                } else if (type == Date.class) {
+                    gen.writeString("");
                 } else if (type.isArray() || Collection.class.isAssignableFrom(type)) {
                     gen.writeStartArray();
                     gen.writeEndArray();