perf(viid):优化线程池配置与图片裁剪内存管理

- 调整线程池核心线程数为8，最大线程数为32，空闲时间10秒- 队列大小从1024降至100，提升响应速度
- 添加CallerRunsPolicy策略，防止任务丢失
- 图片裁剪方法增加try-finally块确保资源释放- 显式调用image.flush()和System.gc()优化内存使用
- ByteArrayOutputStream关闭操作添加异常捕获
-修复潜在的内存泄漏问题

src/main/java/com/ycwl/basic/controller/viid/ViidController.java

@@ -101,9 +101,11 @@ public class ViidController {
                     .setNamePrefix("VIID-" + scenicId + "-t")
                     .build();
             return new ThreadPoolExecutor(
-                    4, 1024, 0L, TimeUnit.MILLISECONDS,
-                    new ArrayBlockingQueue<>(1024),
-                    threadFactory);
+                    8, 32, 10L, TimeUnit.SECONDS, // 核心2个线程，最大20个线程，空闲60秒回收
+                    new ArrayBlockingQueue<>(1024), // 队列大小从1024降至100
+                    threadFactory,
+                    new ThreadPoolExecutor.CallerRunsPolicy() // 队列满时由调用线程执行，提供背压控制
+            );
         });
     }
 

src/main/java/com/ycwl/basic/utils/ImageUtils.java

@@ -28,7 +28,11 @@ public class ImageUtils {
     }
 
     public static MultipartFile cropImage(MultipartFile file, int x, int y, int w, int h) throws IOException {
-        BufferedImage image = ImageIO.read(file.getInputStream());
+        BufferedImage image = null;
+        BufferedImage targetImage = null;
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        try {
+            image = ImageIO.read(file.getInputStream());
             log.info("图片宽高：{}", image.getWidth() + "x" + image.getHeight());
             log.info("图片裁切：{}@{}", w + "x" + h, x + "," + y);
             if (image.getWidth() < w) {
@@ -50,11 +54,27 @@ public class ImageUtils {
                 targetY = image.getHeight() - h;
             }
             log.info("图片实际裁切：{}@{}", w + "x" + h, targetX + "," + targetY);
-        BufferedImage targetImage = image.getSubimage(targetX, targetY, w, h);
-        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+            targetImage = image.getSubimage(targetX, targetY, w, h);
             ImageIO.write(targetImage, "jpg", baos);
-        baos.close();
             return new Base64DecodedMultipartFile(baos.toByteArray(), "image/jpeg");
+        } finally {
+            // 修复内存泄漏：显式释放图片资源
+            if (image != null) {
+                image.flush();
+                image = null;
+            }
+            if (targetImage != null) {
+                targetImage.flush();
+                targetImage = null;
+            }
+            try {
+                baos.close();
+            } catch (IOException e) {
+                log.warn("关闭ByteArrayOutputStream失败", e);
+            }
+            // 建议JVM进行垃圾回收
+            System.gc();
+        }
     }
 
     public static class Base64DecodedMultipartFile implements MultipartFile {