fix:添加获取文件md5

oss-common/src/main/java/cn/axzo/oss/common/utils/Utility.java

@@ -3,12 +3,14 @@ package cn.axzo.oss.common.utils;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.channels.FileChannel;
 import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.Objects;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.codec.binary.Hex;
+import org.apache.commons.codec.digest.DigestUtils;
 
 /**
  * @Author admin
@@ -74,4 +76,21 @@ public class Utility {
     }
     return content;
   }
+
+  /**
+   * 获取文件的MD5值
+   * @param bytes
+   * @return
+   */
+  public static String getMd5(byte [] bytes) {
+    try {
+      MessageDigest md5 = MessageDigest.getInstance("MD5");
+      md5.reset();
+      md5.update(bytes);
+      return Hex.encodeHexString(md5.digest());
+    } catch (NoSuchAlgorithmException e) {
+      log.warn("getMd5 fail = {}",e.getMessage());
+    }
+    return "";
+  }
 }