From d692b45b22f985aff4635a5bb8b8958ae9bcd6dd Mon Sep 17 00:00:00 2001
From: 13693261870 <252740454@qq.com>
Date: 星期五, 21 十月 2022 17:50:09 +0800
Subject: [PATCH] 1
---
src/main/java/com/lf/server/helper/FileHelper.java | 95 ++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 92 insertions(+), 3 deletions(-)
diff --git a/src/main/java/com/lf/server/helper/FileHelper.java b/src/main/java/com/lf/server/helper/FileHelper.java
index 5e49417..ed33f93 100644
--- a/src/main/java/com/lf/server/helper/FileHelper.java
+++ b/src/main/java/com/lf/server/helper/FileHelper.java
@@ -1,6 +1,16 @@
package com.lf.server.helper;
+import com.lf.server.entity.data.MetaFileEntity;
+import com.lf.server.service.data.UploaderService;
+import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.text.DecimalFormat;
+import java.util.List;
/**
* 鏂囦欢甯姪绫�
@@ -9,11 +19,14 @@
public class FileHelper {
private final static String POINT = ".";
+ public static final double D1024 = 1024.0;
+
+ public static final double D1050 = 1050.0;
+
+ private final static Log log = LogFactory.getLog(FileHelper.class);
+
/**
* 鑾峰彇鏂囦欢鎵╁睍鍚�
- *
- * @param file 鏂囦欢
- * @return
*/
public static String getExtension(File file) {
if (file == null) {
@@ -30,6 +43,21 @@
return fileName.substring(idx);
}
+ /**
+ * 鑾峰彇鏂囦欢鎵╁睍鍚�
+ */
+ public static String getExtension(String fileName) {
+ if (StringHelper.isEmpty(fileName)) {
+ return "";
+ }
+
+ int idx = fileName.lastIndexOf(POINT);
+ if (idx == -1) {
+ return "";
+ }
+
+ return fileName.substring(idx).toLowerCase();
+ }
/**
* 鑾峰彇澶氱敤閫斾簰鑱旂綉閭欢鎵╁睍绫诲瀷
@@ -120,4 +148,65 @@
return "application/octet-stream";
}
}
+
+ /**
+ * 瀛楄妭鍗曚綅鎹㈢畻
+ */
+ public static String formatByte(long byteNumber) {
+ double kbNumber = byteNumber / D1024;
+ if (kbNumber < D1024) {
+ return new DecimalFormat("#.##KB").format(kbNumber);
+ }
+ double mbNumber = kbNumber / D1024;
+ if (mbNumber < D1024) {
+ return new DecimalFormat("#.##MB").format(mbNumber);
+ }
+ double gbNumber = mbNumber / D1024;
+ if (gbNumber < D1024) {
+ return new DecimalFormat("#.##GB").format(gbNumber);
+ }
+ double tbNumber = gbNumber / D1024;
+
+ return new DecimalFormat("#.##TB").format(tbNumber);
+ }
+
+ /**
+ * byte杞琈B
+ */
+ public static double sizeToMb(long size) {
+ if (size < D1050) {
+ return 0.001;
+ }
+
+ String str = String.format("%.3f", size / D1024 / D1024);
+
+ return Double.parseDouble(str);
+ }
+
+ /**
+ * 鑾峰彇鏂囦欢 MD5 鐮�
+ */
+ public static String getFileMd5(String filePath) throws IOException {
+ FileInputStream fileStream = new FileInputStream(filePath);
+ String md5 = DigestUtils.md5Hex(fileStream);
+ fileStream.close();
+
+ return md5;
+ }
+
+ /**
+ * 鍒犻櫎鏂囦欢
+ */
+ public static void deleteFiles(List<MetaFileEntity> list) {
+ try {
+ for (MetaFileEntity mf : list) {
+ File f = new File(mf.getPath());
+ if (f.exists()) {
+ f.delete();
+ }
+ }
+ } catch (Exception ex) {
+ log.error(ex.getMessage(), ex);
+ }
+ }
}
--
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