增加ssh链接框架

backend/src/main/java/com/qqchen/deploy/backend/deploy/api/ServerSSHFileApiController.java

@@ -178,10 +178,7 @@ public class ServerSSHFileApiController {
         @PathVariable Long serverId,
         @PathVariable String taskId
     ) {
-        FileUploadTask task = serverSSHFileService.getUploadTaskStatus(taskId);
+        FileUploadTask task = serverSSHFileService.getUploadTaskStatus(serverId, taskId);
-        if (task == null) {
-            return Response.error(com.qqchen.deploy.backend.framework.enums.ResponseCode.DATA_NOT_FOUND, "任务不存在");
-        }
         return Response.success(task);
     }
     
@@ -190,15 +187,15 @@ public class ServerSSHFileApiController {
      * 
      * @param serverId 服务器ID
      * @param taskId 任务ID
-     * @return 是否取消成功
+     * @return 是否取消成功（true=取消成功，false=无法取消）
      */
     @DeleteMapping("/{serverId}/files/upload-task/{taskId}")
-    public Response<Map<String, Boolean>> cancelUploadTask(
+    public Response<Boolean> cancelUploadTask(
         @PathVariable Long serverId,
         @PathVariable String taskId
     ) {
-        boolean cancelled = serverSSHFileService.cancelUploadTask(taskId);
+        boolean cancelled = serverSSHFileService.cancelUploadTask(serverId, taskId);
-        return Response.success(Map.of("cancelled", cancelled));
+        return Response.success(cancelled);
     }
     
     /**

backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/ServerSSHFileService.java

@@ -8,6 +8,7 @@ import com.qqchen.deploy.backend.framework.enums.ResponseCode;
 import com.qqchen.deploy.backend.framework.enums.SSHEvent;
 import com.qqchen.deploy.backend.framework.enums.SSHTargetType;
 import com.qqchen.deploy.backend.framework.exception.BusinessException;
+import com.qqchen.deploy.backend.framework.exception.UploadCancelledException;
 import com.qqchen.deploy.backend.framework.ssh.SSHCommandServiceFactory;
 import com.qqchen.deploy.backend.framework.ssh.file.AbstractSSHFileOperations;
 import com.qqchen.deploy.backend.framework.ssh.file.AsyncFileUploadService;
@@ -28,6 +29,7 @@ import java.io.FilterInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.Date;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.atomic.AtomicLong;
@@ -114,15 +116,15 @@ public class ServerSSHFileService extends AbstractSSHFileOperations {
             throw new BusinessException(ResponseCode.INVALID_PARAM, new Object[]{"读取文件失败: " + e.getMessage()});
         }
         
-        // 准备元数据
+        // 准备元数据（使用HashMap，可变）
-        Map<String, Object> metadata = Map.of(
+        Map<String, Object> metadata = new HashMap<>();
-            "serverId", serverId,
+        metadata.put("serverId", serverId);
-            "remotePath", remotePath,
+        metadata.put("remotePath", remotePath);
-            "overwrite", overwrite
+        metadata.put("overwrite", overwrite);
-        );
         
         // 提交任务到Framework层
         return asyncFileUploadService.submitTask(
+            serverId,  // 🔒 传递serverId
             fileName,
             fileSize,
             metadata,
@@ -137,16 +139,32 @@ public class ServerSSHFileService extends AbstractSSHFileOperations {
     
     /**
      * 查询上传任务状态
+     * 
+     * @param serverId 服务器ID
+     * @param taskId 任务ID
+     * @return 任务信息
+     * @throws BusinessException 如果任务不存在或不属于该服务器
      */
-    public FileUploadTask getUploadTaskStatus(String taskId) {
+    public FileUploadTask getUploadTaskStatus(Long serverId, String taskId) {
-        return asyncFileUploadService.getTaskStatus(taskId);
+        FileUploadTask task = asyncFileUploadService.getTaskStatus(serverId, taskId);
+        
+        if (task == null) {
+            throw new BusinessException(ResponseCode.DATA_NOT_FOUND, 
+                new Object[]{"任务不存在或不属于该服务器"});
+        }
+        
+        return task;
     }
     
     /**
      * 取消上传任务
+     * 
+     * @param serverId 服务器ID
+     * @param taskId 任务ID
+     * @return 是否取消成功
      */
-    public boolean cancelUploadTask(String taskId) {
+    public boolean cancelUploadTask(Long serverId, String taskId) {
-        return asyncFileUploadService.cancelTask(taskId);
+        return asyncFileUploadService.cancelTask(serverId, taskId);
     }
     
     /**
@@ -199,6 +217,7 @@ public class ServerSSHFileService extends AbstractSSHFileOperations {
                     ProgressMonitorInputStream progressStream = new ProgressMonitorInputStream(
                         inputStream, fileSize, uploadedBytes, progressCallback);
                     
+                    try {
                         sftpClient.put(new InMemorySourceFile() {
                             @Override
                             public String getName() {
@@ -218,6 +237,18 @@ public class ServerSSHFileService extends AbstractSSHFileOperations {
                         
                         FileAttributes attrs = sftpClient.stat(remotePath);
                         return convertToSSHFileInfo(remotePath, attrs);
+                        
+                    } catch (UploadCancelledException e) {
+                        // 🗑️ 用户取消上传，删除部分上传的文件
+                        try {
+                            sftpClient.rm(remotePath);
+                            log.info("已删除部分上传的文件: path={}, uploadedBytes={}/{}", 
+                                remotePath, uploadedBytes.get(), fileSize);
+                        } catch (IOException deleteEx) {
+                            log.warn("删除部分上传文件失败: path={}", remotePath, deleteEx);
+                        }
+                        throw e;  // 重新抛出原异常
+                    }
                 }
             }
             

backend/src/main/java/com/qqchen/deploy/backend/framework/enums/ResponseCode.java

@@ -40,6 +40,7 @@ public enum ResponseCode {
     SSH_FILE_TIMEOUT(1211, "ssh.file.timeout"),
     SSH_FILE_OPERATION_FAILED(1212, "ssh.file.operation.failed"),
     SSH_FILE_UPLOAD_SIZE_EXCEEDED(1213, "ssh.file.upload.size.exceeded"),
+    SSH_FILE_UPLOAD_CANCELLED(1214, "ssh.file.upload.cancelled"),
 
     // 业务异常 (2开头)
     TENANT_NOT_FOUND(2001, "tenant.not.found"),

backend/src/main/java/com/qqchen/deploy/backend/framework/exception/UploadCancelledException.java

@@ -0,0 +1,15 @@
+package com.qqchen.deploy.backend.framework.exception;
+
+import com.qqchen.deploy.backend.framework.enums.ResponseCode;
+
+/**
+ * 上传取消异常
+ * 
+ * 当用户主动取消文件上传时抛出此异常
+ */
+public class UploadCancelledException extends BusinessException {
+    
+    public UploadCancelledException() {
+        super(ResponseCode.SSH_FILE_UPLOAD_CANCELLED);
+    }
+}

backend/src/main/java/com/qqchen/deploy/backend/framework/ssh/file/AsyncFileUploadService.java

@@ -1,5 +1,6 @@
 package com.qqchen.deploy.backend.framework.ssh.file;
 
+import com.qqchen.deploy.backend.framework.exception.UploadCancelledException;
 import com.qqchen.deploy.backend.framework.utils.FileUtils;
 import jakarta.annotation.PreDestroy;
 import lombok.extern.slf4j.Slf4j;
@@ -10,6 +11,7 @@ import org.springframework.messaging.simp.SimpMessagingTemplate;
 import org.springframework.stereotype.Service;
 
 import java.util.Date;
+import java.util.HashMap;
 import java.util.Map;
 import java.util.UUID;
 import java.util.concurrent.ConcurrentHashMap;
@@ -29,8 +31,16 @@ public class AsyncFileUploadService {
     
     private final AsyncTaskExecutor executor;  // 虚拟线程池（来自SSHWebSocketConfig）
     
-    // 任务缓存（内存存储，实际生产环境建议用Redis）
+    // ========== 线程安全的任务存储 ==========
-    private final Map<String, FileUploadTask> tasks = new ConcurrentHashMap<>();
+    
+    // 按服务器分组存储任务（外层：serverId → 内层：taskId → Task）
+    private final Map<Long, Map<String, FileUploadTask>> tasksByServer = new ConcurrentHashMap<>();
+    
+    // 反向索引：taskId → serverId（快速查找任务归属）
+    private final Map<String, Long> taskToServer = new ConcurrentHashMap<>();
+    
+    // 分段锁：每个服务器一个锁，减少锁竞争
+    private final ConcurrentHashMap<Long, Object> serverLocks = new ConcurrentHashMap<>();
     
     /**
      * 构造函数
@@ -56,30 +66,42 @@ public class AsyncFileUploadService {
     /**
      * 提交上传任务
      * 
+     * @param serverId 服务器ID
      * @param fileName 文件名
      * @param fileSize 文件大小
      * @param uploadAction 上传动作（接收进度回调，执行实际上传）
      * @return 任务ID
      */
-    public String submitTask(String fileName, long fileSize, 
+    public String submitTask(Long serverId, String fileName, long fileSize, 
                             Consumer<ProgressCallback> uploadAction) {
-        return submitTask(fileName, fileSize, null, uploadAction);
+        return submitTask(serverId, fileName, fileSize, null, uploadAction);
     }
     
     /**
-     * 提交上传任务（带元数据）
+     * 提交上传任务（带元数据，线程安全）
      * 
+     * @param serverId 服务器ID
      * @param fileName 文件名
      * @param fileSize 文件大小
-     * @param metadata 元数据（如服务器ID、目标路径等）
+     * @param metadata 元数据（如目标路径、覆盖标记等）
      * @param uploadAction 上传动作（接收进度回调，执行实际上传）
      * @return 任务ID
      */
-    public String submitTask(String fileName, long fileSize, Map<String, Object> metadata,
+    public String submitTask(Long serverId, String fileName, long fileSize, Map<String, Object> metadata,
                             Consumer<ProgressCallback> uploadAction) {
         // 生成任务ID
         String taskId = UUID.randomUUID().toString();
         
+        // 初始化 metadata（如果为null）
+        if (metadata == null) {
+            metadata = new HashMap<>();
+        }
+        
+        // 确保 metadata 包含 serverId（如果没有则添加）
+        if (!metadata.containsKey("serverId")) {
+            metadata.put("serverId", serverId);
+        }
+        
         // 创建任务
         FileUploadTask task = FileUploadTask.builder()
             .taskId(taskId)
@@ -95,13 +117,22 @@ public class AsyncFileUploadService {
             .updateTime(new Date())
             .build();
         
-        tasks.put(taskId, task);
+        // 🔒 获取服务器锁，保证原子性
+        Object lock = serverLocks.computeIfAbsent(serverId, k -> new Object());
         
-        log.info("提交上传任务: taskId={}, fileName={}, size={}", 
+        synchronized (lock) {
-            taskId, fileName, FileUtils.formatFileSize(fileSize));
+            // 同时更新两个 Map（原子操作）
+            tasksByServer.computeIfAbsent(serverId, k -> new ConcurrentHashMap<>())
+                         .put(taskId, task);
+            
+            taskToServer.put(taskId, serverId);
+        }
+        
+        log.info("提交上传任务: serverId={}, taskId={}, fileName={}, size={}", 
+            serverId, taskId, fileName, FileUtils.formatFileSize(fileSize));
         
         // 异步执行上传
-        executor.submit(() -> executeUpload(taskId, task, uploadAction));
+        executor.submit(() -> executeUpload(serverId, taskId, task, uploadAction));
         
         return taskId;
     }
@@ -109,7 +140,7 @@ public class AsyncFileUploadService {
     /**
      * 执行上传（异步）
      */
-    private void executeUpload(String taskId, FileUploadTask task, 
+    private void executeUpload(Long serverId, String taskId, FileUploadTask task, 
                               Consumer<ProgressCallback> uploadAction) {
         try {
             // 更新状态为上传中
@@ -120,6 +151,13 @@ public class AsyncFileUploadService {
             
             // 创建进度回调
             ProgressCallback progressCallback = (uploaded, total) -> {
+                // ⚠️ 检查任务是否被取消
+                if (task.isCancelled()) {
+                    log.info("检测到取消标记，中断上传: taskId={}, progress={}%", 
+                        taskId, (int) ((uploaded * 100) / total));
+                    throw new UploadCancelledException();
+                }
+                
                 // 计算进度
                 int progress = (int) ((uploaded * 100) / total);
                 task.setUploadedSize(uploaded);
@@ -143,12 +181,19 @@ public class AsyncFileUploadService {
             log.info("文件上传成功: taskId={}, fileName={}", taskId, task.getFileName());
             
         } catch (Exception e) {
+            // 判断是取消还是失败
+            if (task.isCancelled()) {
+                log.info("上传已取消: taskId={}, fileName={}", taskId, task.getFileName());
+                task.setStatus(TaskStatus.CANCELLED);
+                task.setErrorMessage("用户取消上传");
+            } else {
                 log.error("文件上传失败: taskId={}, fileName={}", taskId, task.getFileName(), e);
                 task.setStatus(TaskStatus.FAILED);
                 task.setErrorMessage(e.getMessage());
+            }
             task.setUpdateTime(new Date());
             
-            // 发送失败通知
+            // 发送状态更新通知
             sendTaskUpdate(task);
         }
     }
@@ -208,66 +253,155 @@ public class AsyncFileUploadService {
     }
     
     /**
-     * 查询任务状态
+     * 查询任务状态（线程安全）
      * 
      * @param taskId 任务ID
      * @return 任务信息
      */
     public FileUploadTask getTaskStatus(String taskId) {
-        return tasks.get(taskId);
+        Long serverId = taskToServer.get(taskId);
+        if (serverId == null) {
+            return null;
+        }
+        
+        Map<String, FileUploadTask> serverTasks = tasksByServer.get(serverId);
+        return serverTasks != null ? serverTasks.get(taskId) : null;
     }
     
     /**
-     * 取消任务（仅能取消排队中的任务）
+     * 查询任务状态（带服务器验证，线程安全）
      * 
+     * @param serverId 服务器ID
+     * @param taskId 任务ID
+     * @return 任务信息，如果任务不属于该服务器则返回null
+     */
+    public FileUploadTask getTaskStatus(Long serverId, String taskId) {
+        // 验证任务归属
+        Long actualServerId = taskToServer.get(taskId);
+        if (actualServerId == null || !actualServerId.equals(serverId)) {
+            return null;
+        }
+        
+        Map<String, FileUploadTask> serverTasks = tasksByServer.get(serverId);
+        return serverTasks != null ? serverTasks.get(taskId) : null;
+    }
+    
+    /**
+     * 取消任务（支持取消排队中和上传中的任务，带服务器验证，线程安全）
+     * 
+     * @param serverId 服务器ID
      * @param taskId 任务ID
      * @return 是否取消成功
      */
-    public boolean cancelTask(String taskId) {
+    public boolean cancelTask(Long serverId, String taskId) {
-        FileUploadTask task = tasks.get(taskId);
+        // 验证任务归属
-        if (task != null && task.getStatus() == TaskStatus.PENDING) {
+        Long actualServerId = taskToServer.get(taskId);
+        if (actualServerId == null || !actualServerId.equals(serverId)) {
+            log.warn("任务不属于该服务器: taskId={}, requestServerId={}, actualServerId={}", 
+                taskId, serverId, actualServerId);
+            return false;
+        }
+        
+        Object lock = serverLocks.get(serverId);
+        if (lock == null) {
+            return false;
+        }
+        
+        synchronized (lock) {
+            Map<String, FileUploadTask> serverTasks = tasksByServer.get(serverId);
+            if (serverTasks == null) {
+                return false;
+            }
+            
+            FileUploadTask task = serverTasks.get(taskId);
+            if (task == null) {
+                return false;
+            }
+            
+            TaskStatus status = task.getStatus();
+            
+            // ✅ 支持取消 PENDING 和 UPLOADING 状态的任务
+            if (status == TaskStatus.PENDING || status == TaskStatus.UPLOADING) {
+                task.cancel();  // 设置取消标记
+                
+                // 如果是 PENDING 状态，直接更新为 CANCELLED
+                if (status == TaskStatus.PENDING) {
                     task.setStatus(TaskStatus.CANCELLED);
                     task.setUpdateTime(new Date());
                     sendTaskUpdate(task);
-            log.info("任务已取消: taskId={}", taskId);
+                    log.info("任务已取消: serverId={}, taskId={}, status=PENDING", serverId, taskId);
+                } else {
+                    // UPLOADING 状态，会在下次进度回调时中断
+                    log.info("任务已标记为取消: serverId={}, taskId={}, status=UPLOADING（将在下次进度回调时中断）", 
+                        serverId, taskId);
+                }
+                
                 return true;
             }
+        }
         return false;
     }
     
     /**
-     * 清理已完成的任务（定时清理，避免内存泄漏）
+     * 清理已完成的任务（定时清理，避免内存泄漏，线程安全）
      * 
      * @param olderThanHours 清理多少小时前的任务
      * @return 清理的任务数
      */
     public int cleanupCompletedTasks(int olderThanHours) {
         long cutoffTime = System.currentTimeMillis() - (olderThanHours * 60 * 60 * 1000L);
-        int[] count = {0};
+        int count = 0;
         
-        tasks.entrySet().removeIf(entry -> {
+        // 遍历所有服务器
-            FileUploadTask task = entry.getValue();
+        for (Map.Entry<Long, Map<String, FileUploadTask>> serverEntry : tasksByServer.entrySet()) {
+            Long serverId = serverEntry.getKey();
+            Map<String, FileUploadTask> serverTasks = serverEntry.getValue();
+            
+            Object lock = serverLocks.get(serverId);
+            if (lock == null) {
+                continue;
+            }
+            
+            synchronized (lock) {
+                // 清理该服务器的旧任务
+                serverTasks.entrySet().removeIf(taskEntry -> {
+                    FileUploadTask task = taskEntry.getValue();
                     boolean shouldRemove = (task.getStatus() == TaskStatus.SUCCESS || 
                                            task.getStatus() == TaskStatus.FAILED || 
                                            task.getStatus() == TaskStatus.CANCELLED)
                                            && task.getUpdateTime().getTime() < cutoffTime;
                     if (shouldRemove) {
-                count[0]++;
+                        // 同时从反向索引中删除
-                log.debug("清理旧任务: taskId={}, status={}", entry.getKey(), task.getStatus());
+                        taskToServer.remove(taskEntry.getKey());
+                        log.debug("清理旧任务: serverId={}, taskId={}, status={}", 
+                            serverId, taskEntry.getKey(), task.getStatus());
                     }
                     return shouldRemove;
                 });
                 
-        return count[0];
+                count += serverTasks.size();
+                
+                // 如果服务器的任务列表空了，清理整个 Map
+                if (serverTasks.isEmpty()) {
+                    tasksByServer.remove(serverId);
+                    serverLocks.remove(serverId);
+                }
+            }
+        }
+        
+        return count;
     }
     
     /**
-     * 获取当前任务统计
+     * 获取当前任务统计（线程安全）
      */
     public Map<String, Integer> getTaskStatistics() {
-        int pending = 0, uploading = 0, success = 0, failed = 0, cancelled = 0;
+        int pending = 0, uploading = 0, success = 0, failed = 0, cancelled = 0, total = 0;
         
-        for (FileUploadTask task : tasks.values()) {
+        // 遍历所有服务器的任务
+        for (Map<String, FileUploadTask> serverTasks : tasksByServer.values()) {
+            for (FileUploadTask task : serverTasks.values()) {
+                total++;
                 switch (task.getStatus()) {
                     case PENDING -> pending++;
                     case UPLOADING -> uploading++;
@@ -276,6 +410,7 @@ public class AsyncFileUploadService {
                     case CANCELLED -> cancelled++;
                 }
             }
+        }
         
         return Map.of(
             "pending", pending,
@@ -283,7 +418,7 @@ public class AsyncFileUploadService {
             "success", success,
             "failed", failed,
             "cancelled", cancelled,
-            "total", tasks.size()
+            "total", total
         );
     }
     
@@ -292,7 +427,8 @@ public class AsyncFileUploadService {
      */
     @PreDestroy
     public void shutdown() {
-        log.info("异步上传服务关闭，剩余任务: {}", tasks.size());
+        int totalTasks = taskToServer.size();
+        log.info("异步上传服务关闭，剩余任务: {}", totalTasks);
         // 虚拟线程池由Spring容器管理，无需手动关闭
     }
     

backend/src/main/java/com/qqchen/deploy/backend/framework/ssh/file/FileUploadTask.java

@@ -79,4 +79,24 @@ public class FileUploadTask {
      * 更新时间
      */
     private Date updateTime;
+    
+    /**
+     * 取消标记（volatile 保证多线程可见性）
+     * 用于支持取消正在上传的任务
+     */
+    private volatile boolean cancelled = false;
+    
+    /**
+     * 标记任务为取消状态
+     */
+    public void cancel() {
+        this.cancelled = true;
+    }
+    
+    /**
+     * 检查任务是否已被取消
+     */
+    public boolean isCancelled() {
+        return cancelled;
+    }
 }

backend/src/main/java/com/qqchen/deploy/backend/framework/ssh/websocket/AbstractSSHWebSocketHandler.java

@@ -151,8 +151,6 @@ public abstract class AbstractSSHWebSocketHandler extends TextWebSocketHandler {
             // 懒加载：如果没有，就生成并存储（保证一致性）
             sessionId = SessionIdGenerator.enhanceWebSocketSessionId(session.getId());
             session.getAttributes().put("sshSessionId", sessionId);
-            log.debug("懒加载生成sessionId: webSocketId={}, sshSessionId={}", 
-                session.getId(), sessionId);
         }
         return sessionId;
     }
@@ -241,10 +239,7 @@ public abstract class AbstractSSHWebSocketHandler extends TextWebSocketHandler {
                 // 参数：终端类型, 列数, 行数, 宽度(像素), 高度(像素), 终端模式
                 sshSession.allocatePTY("xterm", 80, 24, 0, 0, java.util.Collections.emptyMap());
                 
-                log.debug("PTY已分配: sessionId={}, termType=xterm, cols=80, rows=24", sessionId);
-                
                 Session.Shell shell = sshSession.startShell();
-                log.debug("Shell已启动: sessionId={}", sessionId);
                 
                 // 保存会话信息
                 webSocketSessions.put(sessionId, session);
@@ -376,9 +371,6 @@ public abstract class AbstractSSHWebSocketHandler extends TextWebSocketHandler {
                 
                 shell.changeWindowDimensions(request.getCols(), request.getRows(), 
                     widthPixels, heightPixels);
-                    
-                log.debug("SSH终端尺寸已调整: sessionId={}, cols={}, rows={}", 
-                    sessionId, request.getCols(), request.getRows());
             } else {
                 log.warn("未找到SSH Shell，无法调整尺寸: sessionId={}", sessionId);
             }
@@ -495,53 +487,35 @@ public abstract class AbstractSSHWebSocketHandler extends TextWebSocketHandler {
      * @param shell SSH Shell
      */
     private void readSSHOutput(WebSocketSession session, Session.Shell shell) {
-        // 从session.attributes中获取增强后的sessionId
         String sessionId = getSessionId(session);
-        log.debug("开始监听SSH输出: sessionId={}", sessionId);
         
         try {
             InputStream inputStream = shell.getInputStream();
             byte[] buffer = new byte[1024];
             int len;
             
-            log.debug("SSH输出流已获取，开始循环读取: sessionId={}", sessionId);
-            
             while (session.isOpen() && (len = inputStream.read(buffer)) > 0) {
                 String output = new String(buffer, 0, len, StandardCharsets.UTF_8);
-                log.debug("读取到SSH输出: sessionId={}, length={}, content={}", 
-                         sessionId, len, output.replaceAll("\\r", "\\\\r").replaceAll("\\n", "\\\\n"));
-                
-                log.debug("准备发送输出到前端: sessionId={}, session.isOpen={}", sessionId, session.isOpen());
                 sendOutput(session, output);
-                log.debug("SSH输出已发送到前端: sessionId={}", sessionId);
             }
             
-            log.debug("SSH输出监听结束: sessionId={}, session.isOpen={}", sessionId, session.isOpen());
-            
         } catch (java.io.InterruptedIOException e) {
-            // 线程被中断（正常的清理过程），检查是否是WebSocket关闭导致的
+            if (session.isOpen()) {
-            if (!session.isOpen()) {
+                log.warn("SSH输出监听线程被中断: sessionId={}", sessionId);
-                log.debug("SSH输出监听线程被正常中断（WebSocket已关闭）: sessionId={}", sessionId);
-            } else {
-                log.warn("SSH输出监听线程被中断，但WebSocket仍打开: sessionId={}", sessionId);
-                // 只在session仍然打开时尝试发送错误消息
                 try {
                     sendError(session, "SSH连接被中断");
                 } catch (Exception ex) {
-                    log.debug("发送错误消息失败（session可能已关闭）: sessionId={}", sessionId);
+                    // 忽略
                 }
             }
         } catch (IOException e) {
-            // 其他IO异常（真正的错误）
             if (session.isOpen()) {
                 log.error("读取SSH输出失败: sessionId={}", sessionId, e);
                 try {
                     sendError(session, "读取SSH输出失败: " + e.getMessage());
                 } catch (Exception ex) {
-                    log.debug("发送错误消息失败（session可能已关闭）: sessionId={}", sessionId);
+                    // 忽略
                 }
-            } else {
-                log.debug("读取SSH输出时发生IO异常，但session已关闭（正常）: sessionId={}", sessionId);
             }
         }
     }
@@ -554,38 +528,25 @@ public abstract class AbstractSSHWebSocketHandler extends TextWebSocketHandler {
      * @param shell SSH Shell
      */
     private void readSSHError(WebSocketSession session, Session.Shell shell) {
-        // 从session.attributes中获取增强后的sessionId
         String sessionId = getSessionId(session);
-        log.debug("开始监听SSH错误流: sessionId={}", sessionId);
         
         try {
             InputStream errorStream = shell.getErrorStream();
             byte[] buffer = new byte[1024];
             int len;
             
-            log.debug("SSH错误流已获取，开始循环读取: sessionId={}", sessionId);
-            
             while (session.isOpen() && (len = errorStream.read(buffer)) > 0) {
                 String output = new String(buffer, 0, len, StandardCharsets.UTF_8);
-                log.debug("读取到SSH错误流输出: sessionId={}, length={}, content={}", 
+                sendOutput(session, output);
-                         sessionId, len, output.replaceAll("\\r", "\\\\r").replaceAll("\\n", "\\\\n"));
-                sendOutput(session, output);  // 错误流也作为output发送到前端
-                log.debug("SSH错误流输出已发送到前端: sessionId={}", sessionId);
             }
             
-            log.debug("SSH错误流监听结束: sessionId={}", sessionId);
-            
         } catch (java.io.InterruptedIOException e) {
-            if (!session.isOpen()) {
+            if (session.isOpen()) {
-                log.debug("SSH错误流监听线程被正常中断（WebSocket已关闭）: sessionId={}", sessionId);
+                log.warn("SSH错误流监听线程被中断: sessionId={}", sessionId);
-            } else {
-                log.warn("SSH错误流监听线程被中断，但WebSocket仍打开: sessionId={}", sessionId);
             }
         } catch (IOException e) {
             if (session.isOpen()) {
                 log.error("读取SSH错误流失败: sessionId={}", sessionId, e);
-            } else {
-                log.debug("读取SSH错误流时发生IO异常，但session已关闭（正常）: sessionId={}", sessionId);
             }
         }
     }
@@ -611,7 +572,6 @@ public abstract class AbstractSSHWebSocketHandler extends TextWebSocketHandler {
      * @param eventData 事件数据
      */
     private void cleanupSession(String sessionId, SSHEventData eventData) {
-        log.debug("清理会话资源: sessionId={}", sessionId);
         
         try {
             // 1. 触发断开前事件（异步，不阻塞清理）
@@ -686,13 +646,10 @@ public abstract class AbstractSSHWebSocketHandler extends TextWebSocketHandler {
      * @param output 输出内容
      */
     protected void sendOutput(WebSocketSession session, String output) {
-        // 从session.attributes中获取sessionId
         String sessionId = getSessionId(session);
-        log.debug("→ sendOutput开始: sessionId={}, outputLength={}", sessionId, output.length());
         
         try {
             if (!session.isOpen()) {
-                log.warn("WebSocket已关闭，跳过发送输出: sessionId={}", sessionId);
                 return;
             }
             
@@ -706,11 +663,7 @@ public abstract class AbstractSSHWebSocketHandler extends TextWebSocketHandler {
             
             // 创建消息
             SSHWebSocketMessage msg = new SSHWebSocketMessage(SSHMessageType.OUTPUT, data);
-            
-            log.debug("  ├─ 准备调用session.sendMessage: sessionId={}", sessionId);
             session.sendMessage(new TextMessage(JsonUtils.toJson(msg)));
-            
-            log.debug("  └─ sendOutput完成: sessionId={}", sessionId);
         } catch (IOException e) {
             log.error("发送输出消息失败(IOException): sessionId={}", sessionId, e);
         } catch (Exception e) {
@@ -724,7 +677,6 @@ public abstract class AbstractSSHWebSocketHandler extends TextWebSocketHandler {
     protected void sendStatus(WebSocketSession session, SSHStatusEnum status) {
         try {
             if (!session.isOpen()) {
-                log.debug("WebSocket已关闭，跳过发送状态: sessionId={}", session.getId());
                 return;
             }
             
@@ -750,7 +702,6 @@ public abstract class AbstractSSHWebSocketHandler extends TextWebSocketHandler {
     protected void sendError(WebSocketSession session, String error) {
         try {
             if (!session.isOpen()) {
-                log.debug("WebSocket已关闭，跳过发送错误消息: sessionId={}", session.getId());
                 return;
             }
             

backend/src/main/resources/messages.properties

@@ -47,6 +47,7 @@ ssh.file.io.error=文件IO错误
 ssh.file.timeout=操作超时
 ssh.file.operation.failed=文件操作失败
 ssh.file.upload.size.exceeded=文件过大，最大允许上传 {0}
+ssh.file.upload.cancelled=用户取消上传
 
 # --------------------------------------------------------------------------------------
 # 业务异常 (Business Exceptions) - 2xxx

backend/src/main/resources/messages_en_US.properties

@@ -47,6 +47,7 @@ ssh.file.io.error=File IO error
 ssh.file.timeout=Operation timeout
 ssh.file.operation.failed=File operation failed
 ssh.file.upload.size.exceeded=File too large, maximum upload size is {0}
+ssh.file.upload.cancelled=Upload cancelled by user
 
 # --------------------------------------------------------------------------------------
 # Business Exceptions - 2xxx

backend/src/main/resources/messages_zh_CN.properties

@@ -47,6 +47,7 @@ ssh.file.io.error=文件IO错误
 ssh.file.timeout=操作超时
 ssh.file.operation.failed=文件操作失败
 ssh.file.upload.size.exceeded=文件过大，最大允许上传 {0}
+ssh.file.upload.cancelled=用户取消上传
 
 # --------------------------------------------------------------------------------------
 # 业务异常 (Business Exceptions) - 2xxx