diff --git a/commons/web-common/src/main/java/com/schbrain/common/web/servlet/ContentCachingRequest.java b/commons/web-common/src/main/java/com/schbrain/common/web/servlet/ContentCachingRequest.java
index 375def65c1070b0d22a98cc52de1400a11b3c1b0..7d772c1d603a153a6508f18ff6a41a9ea6ed7b0b 100644
--- a/commons/web-common/src/main/java/com/schbrain/common/web/servlet/ContentCachingRequest.java
+++ b/commons/web-common/src/main/java/com/schbrain/common/web/servlet/ContentCachingRequest.java
@@ -3,6 +3,7 @@ package com.schbrain.common.web.servlet;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.util.StreamUtils;
 
+import javax.servlet.ServletInputStream;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletRequestWrapper;
 import java.io.IOException;
@@ -22,7 +23,7 @@ public class ContentCachingRequest extends HttpServletRequestWrapper {
     }
 
     @Override
-    public WrappedByteArrayInputStream getInputStream() {
+    public ServletInputStream getInputStream() {
         return inputStream;
     }
 
diff --git a/commons/web-common/src/main/java/com/schbrain/common/web/servlet/WrappedByteArrayInputStream.java b/commons/web-common/src/main/java/com/schbrain/common/web/servlet/WrappedByteArrayInputStream.java
index 3f6166d6988c63849e74578c951b9bb1fbd29df6..5834e7acc311ca27000bc70beb97482bfc2f961a 100644
--- a/commons/web-common/src/main/java/com/schbrain/common/web/servlet/WrappedByteArrayInputStream.java
+++ b/commons/web-common/src/main/java/com/schbrain/common/web/servlet/WrappedByteArrayInputStream.java
@@ -9,7 +9,7 @@ import java.nio.charset.Charset;
  * @author liaozan
  * @since 2023/8/22
  */
-public class WrappedByteArrayInputStream extends ServletInputStream {
+class WrappedByteArrayInputStream extends ServletInputStream {
 
     private final ByteArrayInputStreamWrapper delegate;