From 6b009b0f6d3ef3aee97c362cebcd679d1b9088a3 Mon Sep 17 00:00:00 2001
From: zhangjian <zhangjianrock@163.com>
Date: 星期一, 07 八月 2023 17:34:08 +0800
Subject: [PATCH] 判断列表为空
---
ard-work/src/main/java/com/ruoyi/utils/tools/ArdTool.java | 34 ++++++++++++++++++++++++++++++++++
1 files changed, 34 insertions(+), 0 deletions(-)
diff --git a/ard-work/src/main/java/com/ruoyi/utils/tools/ArdTool.java b/ard-work/src/main/java/com/ruoyi/utils/tools/ArdTool.java
index 70172c5..ded00ce 100644
--- a/ard-work/src/main/java/com/ruoyi/utils/tools/ArdTool.java
+++ b/ard-work/src/main/java/com/ruoyi/utils/tools/ArdTool.java
@@ -5,6 +5,7 @@
import javax.annotation.Resource;
import java.lang.reflect.Field;
+import java.text.DecimalFormat;
import java.time.LocalTime;
import java.util.*;
@@ -87,4 +88,37 @@
return 1;
}
}
+ /**
+ * 鏂囦欢澶у皬鏅鸿兘杞崲
+ * 浼氬皢鏂囦欢澶у皬杞崲涓烘渶澶ф弧瓒冲崟浣�
+ * @param size锛堟枃浠跺ぇ灏忥紝鍗曚綅涓築锛�
+ * @return 鏂囦欢澶у皬
+ */
+ public static String formatFileSize(Long size) {
+ String sizeName = null;
+ if (1024 * 1024 > size && size >= 1024) {
+ sizeName = String.format("%.2f", size.doubleValue() / 1024) + "KB";
+ } else if (1024 * 1024 * 1024 > size && size >= 1024 * 1024) {
+ sizeName = String.format("%.2f", size.doubleValue() / (1024 * 1024)) + "MB";
+ } else if (size >= 1024 * 1024 * 1024) {
+ sizeName = String.format("%.2f", size.doubleValue() / (1024 * 1024 * 1024)) + "GB";
+ } else {
+ sizeName = size.toString() + "B";
+ }
+ return sizeName;
+ }
+ /**
+ * 鏂囦欢澶у皬鏅鸿兘杞崲
+ * 浼氬皢鏂囦欢澶у皬杞崲涓烘渶澶ф弧瓒冲崟浣�
+ * @param size锛堟枃浠跺ぇ灏忥紝鍗曚綅涓築锛�
+ * @return 鏂囦欢澶у皬
+ */
+ public static String readableFileSize(long size) {
+ if (size <= 0) {
+ return "0";
+ }
+ final String[] units = new String[]{"B", "KB", "MB", "GB", "TB"};
+ int digitGroups = (int) (Math.log10(size) / Math.log10(1024));
+ return new DecimalFormat("#,###.##").format(size / Math.pow(1024, digitGroups)) + " " + units[digitGroups];
+ }
}
--
Gitblit v1.9.3