修改完善这个专利部分

backend-java/src/main/java/com/nanri/aiimage/config/TaskFileJobConfig.java

@@ -9,6 +9,7 @@ import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
 
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+import java.util.concurrent.Semaphore;
 
 @Configuration
 public class TaskFileJobConfig {
@@ -37,7 +38,23 @@ public class TaskFileJobConfig {
     }
 
     @Bean("cozeTaskExecutor")
-    public TaskExecutor cozeTaskExecutor(ExecutorService cozeVirtualThreadExecutor) {
-        return new ConcurrentTaskExecutor(cozeVirtualThreadExecutor);
+    public TaskExecutor cozeTaskExecutor(
+            ExecutorService cozeVirtualThreadExecutor,
+            @Value("${aiimage.coze-task.max-concurrent:8}") int maxConcurrent) {
+        Semaphore semaphore = new Semaphore(Math.max(1, maxConcurrent));
+        return new ConcurrentTaskExecutor(command -> cozeVirtualThreadExecutor.execute(() -> {
+            boolean acquired = false;
+            try {
+                semaphore.acquire();
+                acquired = true;
+                command.run();
+            } catch (InterruptedException ex) {
+                Thread.currentThread().interrupt();
+            } finally {
+                if (acquired) {
+                    semaphore.release();
+                }
+            }
+        }));
     }
 }