From 33b238b1563dd53500305ef1941fc87ea982fe76 Mon Sep 17 00:00:00 2001
From: youngq <yq5537@outlook.com>
Date: Tue, 3 Dec 2024 13:37:48 +0800
Subject: [PATCH] =?UTF-8?q?=E5=8E=8B=E7=BC=A9=E4=BA=8C=E7=BB=B4=E7=A0=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Controllers/Frontend/HomeController.cs    |  4 ++-
 WGShare.API/Helpers/QrCodeOptimizerHelper.cs  | 36 +++++++++++++++++++
 2 files changed, 39 insertions(+), 1 deletion(-)
 create mode 100644 WGShare.API/Helpers/QrCodeOptimizerHelper.cs

diff --git a/WGShare.API/Controllers/Frontend/HomeController.cs b/WGShare.API/Controllers/Frontend/HomeController.cs
index 4b5215e..5cf3f4c 100644
--- a/WGShare.API/Controllers/Frontend/HomeController.cs
+++ b/WGShare.API/Controllers/Frontend/HomeController.cs
@@ -335,7 +335,9 @@ namespace WGShare.API.Controllers.Frontend
                 // 处理图片数据
                 var imageArr = await result.Content.ReadAsByteArrayAsync();
                 var imgStr = Convert.ToBase64String(imageArr);
-                RedisHelper.Instance.Set(RedisKeyConstant.WxMiniProgram.GetRoomQrCode(roomNum, env), imgStr, TimeSpan.FromMinutes(10)); 
+
+                imgStr = QrCodeOptimizerHelper.CompressImage(imgStr, 50);
+                RedisHelper.Instance.Set(RedisKeyConstant.WxMiniProgram.GetRoomQrCode(roomNum, env), imgStr, TimeSpan.FromDays(1)); 
                 return imgStr;
             }
             else if (contentType != null && contentType.Contains("json"))
diff --git a/WGShare.API/Helpers/QrCodeOptimizerHelper.cs b/WGShare.API/Helpers/QrCodeOptimizerHelper.cs
new file mode 100644
index 0000000..2119161
--- /dev/null
+++ b/WGShare.API/Helpers/QrCodeOptimizerHelper.cs
@@ -0,0 +1,36 @@
+using SixLabors.ImageSharp;
+using SixLabors.ImageSharp.Formats.Jpeg;
+using System.Drawing.Imaging;
+
+namespace WGShare.API.Helpers
+{
+    public class QrCodeOptimizerHelper
+    {
+        public static string CompressImage(string base64String, int quality)
+        {
+            // 将 Base64 字符串转换为字节数组
+            byte[] imageBytes = Convert.FromBase64String(base64String);
+
+            // 使用 ImageSharp 加载图像
+            using (Image image = Image.Load(imageBytes))
+            {
+                // 设置压缩参数
+                JpegEncoder jpegEncoder = new JpegEncoder
+                {
+                    Quality = quality
+                };
+
+                // 创建一个新的内存流来保存压缩后的图像
+                using (MemoryStream compressedMs = new MemoryStream())
+                {
+                    image.Save(compressedMs, jpegEncoder);
+
+                    // 将压缩后的图像转换回 Base64 字符串
+                    byte[] compressedImageBytes = compressedMs.ToArray();
+                    return Convert.ToBase64String(compressedImageBytes);
+                }
+            }
+        }
+
+    }
+}