diff --git a/bonus-modules/bonus-ai/src/main/java/com/bonus/ai/utils/FileTypeUtils.java b/bonus-modules/bonus-ai/src/main/java/com/bonus/ai/utils/FileTypeUtils.java
new file mode 100644
index 0000000..7dcd2af
--- /dev/null
+++ b/bonus-modules/bonus-ai/src/main/java/com/bonus/ai/utils/FileTypeUtils.java
@@ -0,0 +1,75 @@
+package com.bonus.ai.utils;
+
+import org.apache.commons.lang3.StringUtils;
+
+import java.io.File;
+
+/**
+ * 文件类型工具类
+ *
+ * @author ruoyi
+ */
+public class FileTypeUtils {
+    public static final String FILE_TYPE_XLS = "application/vnd.ms-excel";
+    public static final String FILE_TYPE_XLSX = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
+    public static final String FILE_TYPE_DOC = "application/msword";
+    public static final String FILE_TYPE_DOCX = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
+    public static final String FILE_TYPE_PDF = "application/pdf";
+    public static final String FILE_TYPE_JSON = "application/json";
+    public static final String FILE_TYPE_XML = "application/xml";
+    public static final String FILE_TYPE_PNG = "image/png";
+    public static final String FILE_TYPE_JPEG = "image/jpeg";
+    public static final String FILE_TYPE_SVG = "image/svg";
+
+    /**
+     * 获取文件类型
+     * <p>
+     * 例如: ruoyi.txt, 返回: txt
+     *
+     * @param file 文件名
+     * @return 后缀（不含".")
+     */
+    public static String getFileType(File file) {
+        if (null == file) {
+            return StringUtils.EMPTY;
+        }
+        return getFileType(file.getName());
+    }
+
+    /**
+     * 获取文件类型
+     * <p>
+     * 例如: ruoyi.txt, 返回: txt
+     *
+     * @param fileName 文件名
+     * @return 后缀（不含".")
+     */
+    public static String getFileType(String fileName) {
+        int separatorIndex = fileName.lastIndexOf(".");
+        if (separatorIndex < 0) {
+            return "";
+        }
+        return fileName.substring(separatorIndex + 1).toLowerCase();
+    }
+
+    /**
+     * 获取文件类型
+     *
+     * @param photoByte 文件字节码
+     * @return 后缀（不含".")
+     */
+    public static String getFileExtendName(byte[] photoByte) {
+        String strFileExtendName = "JPG";
+        if ((photoByte[0] == 71) && (photoByte[1] == 73) && (photoByte[2] == 70) && (photoByte[3] == 56)
+                && ((photoByte[4] == 55) || (photoByte[4] == 57)) && (photoByte[5] == 97)) {
+            strFileExtendName = "GIF";
+        } else if ((photoByte[6] == 74) && (photoByte[7] == 70) && (photoByte[8] == 73) && (photoByte[9] == 70)) {
+            strFileExtendName = "JPG";
+        } else if ((photoByte[0] == 66) && (photoByte[1] == 77)) {
+            strFileExtendName = "BMP";
+        } else if ((photoByte[1] == 80) && (photoByte[2] == 78) && (photoByte[3] == 71)) {
+            strFileExtendName = "PNG";
+        }
+        return strFileExtendName;
+    }
+}