压缩二维码

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"))

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);
+                }
+            }
+        }
+
+    }
+}