feat(randomphoto): 优化图片下载和压缩功能

- 新增 ImageUtil 类，提供图片下载和压缩工具方法
- 重构 RandomPhotoService 类，使用新的 ImageUtil工具类处理图片
- 添加 thumbnailator 依赖，用于图片压缩处理

pom.xml

@@ -142,6 +142,12 @@
 			<groupId>com.squareup.okhttp3</groupId>
 			<artifactId>okhttp</artifactId>
 		</dependency>
+		<!-- https://mvnrepository.com/artifact/net.coobird/thumbnailator -->
+		<dependency>
+			<groupId>net.coobird</groupId>
+			<artifactId>thumbnailator</artifactId>
+			<version>0.4.20</version>
+		</dependency>
 	</dependencies>
 
 	<build>

src/main/kotlin/info/alinadace/sakuramiki/service/randomphoto/RandomPhotoService.kt

@@ -5,14 +5,13 @@ import info.alinadace.sakuramiki.annotation.BotFunction
 import info.alinadace.sakuramiki.service.Service
 import info.alinadace.sakuramiki.service.randomphoto.domain.FileList
 import info.alinadace.sakuramiki.service.randomphoto.domain.SingleFile
-import info.alinadace.sakuramiki.util.okHttpClient
+import info.alinadace.sakuramiki.util.ImageUtil
 import io.github.kloping.qqbot.api.v2.FriendMessageEvent
 import io.github.kloping.qqbot.api.v2.GroupMessageEvent
 import io.github.kloping.qqbot.api.v2.MessageV2Event
 import io.github.kloping.qqbot.entities.ex.Image
 import io.github.kloping.qqbot.entities.ex.PlainText
 import jakarta.annotation.Resource
-import okhttp3.Request
 
 /**
  * @author Kane
@@ -57,13 +56,13 @@ class RandomPhotoService : Service<MessageV2Event> {
             return
         }
         event.send("图片下载中...")
-        val request = Request.Builder().get().url(file.data.rawURL).build()
-        val imageByte = okHttpClient.newCall(request).execute().body?.bytes();
+        val imageByte = ImageUtil.download(file.data.rawURL)
         if (imageByte == null) {
             event.send("图片下载失败")
             return
         }
-        val image = Image(imageByte)
+        val compression = ImageUtil.compression(imageByte)
+        val image = Image(compression)
         event.send(image)
     }
 }

src/main/kotlin/info/alinadace/sakuramiki/util/ImageUtil.kt

@@ -0,0 +1,47 @@
+package info.alinadace.sakuramiki.util
+
+import net.coobird.thumbnailator.Thumbnails
+import okhttp3.Request
+import java.io.ByteArrayInputStream
+import java.io.ByteArrayOutputStream
+
+/**
+ * @author Kane
+ * @since 2024/11/13 11:39
+ */
+class ImageUtil {
+    companion object {
+        private const val MAX_SIZE = 1024 * 1024
+        fun compression(bytes: ByteArray): ByteArray {
+            val size = bytes.size
+            var ratio = if (size > MAX_SIZE) {
+                MAX_SIZE.toFloat() / size
+            } else {
+                return bytes
+            }
+            if (ratio > 0.11f) {
+                ratio -= 0.1f
+            }
+            val inputStream = ByteArrayInputStream(bytes)
+            val outputStream = ByteArrayOutputStream()
+
+            try {
+                Thumbnails.of(inputStream)
+                    .width(1920)
+                    .height(1080)
+                    .scale(1.0)
+                    .outputQuality(ratio) // 设置压缩质量，范围从 0.0 到 1.0
+                    .toOutputStream(outputStream)
+            } catch (e: Exception) {
+                e.printStackTrace()
+            }
+
+            return outputStream.toByteArray()
+        }
+
+        fun download(url: String): ByteArray? {
+            val request = Request.Builder().get().url(url).build()
+            return okHttpClient.newCall(request).execute().body?.bytes();
+        }
+    }
+}