diff --git a/src/main/java/cn/chjyj/szwh/utils/SzFileUtils.java b/src/main/java/cn/chjyj/szwh/utils/SzFileUtils.java
index 028c96a..5fe5dac 100644
--- a/src/main/java/cn/chjyj/szwh/utils/SzFileUtils.java
+++ b/src/main/java/cn/chjyj/szwh/utils/SzFileUtils.java
@@ -29,4 +29,39 @@ public class SzFileUtils {
         ins.close();
         return new String(sb);
     }
+
+    /**
+     * 格式化文件大小
+     * @param tfilesize
+     * @return
+     */
+    public static String fileSizeFormat(Long tfilesize){
+        String out="0b";
+        long fileSize = tfilesize - 1;
+        //TB
+        if(fileSize>1099511627776l) {
+            float f= fileSize/1099511627776l;
+            out =String.format("%.2f", f)+"TB";
+        }
+        //GB
+        if(fileSize>1073741824l) {
+            float f = fileSize/1073741824;
+            out =String.format("%.2f", f)+"GB";
+        }
+        //MB
+        if(fileSize>1048576){
+            float f = fileSize/1048576;
+            out = String.format("%.2f",f);
+        }
+        //KB
+        if(fileSize>1024){
+            float f = fileSize/1024;
+            out = String.format("%.2f",f);
+        }
+        //b
+        if(fileSize>0){
+            out = fileSize+"b";
+        }
+        return out;
+    }
 }
\ No newline at end of file