Merge branch 'main' into dyf-device

fys-modules/fys-equipment/src/main/java/com/fuyuanshen/equipment/utils/FileHashUtil.java

@@ -0,0 +1,28 @@
+package com.fuyuanshen.equipment.utils;
+
+import org.apache.commons.codec.digest.DigestUtils;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.security.MessageDigest;
+import java.util.HexFormat;
+
+/**
+ * 文件哈希工具类
+ */
+public class FileHashUtil {
+    private static final String ALGORITHM = "SHA-256";
+
+    public static String hash(MultipartFile file) throws IOException {
+        MessageDigest digest = DigestUtils.getDigest(ALGORITHM);
+        try (InputStream in = file.getInputStream()) {
+            byte[] buf = new byte[8192];
+            int len;
+            while ((len = in.read(buf)) != -1) {
+                digest.update(buf, 0, len);
+            }
+        }
+        return HexFormat.of().formatHex(digest.digest());
+    }
+}