增加了XNEngine的进程监听，确保引擎与前端分离

.gitignore

@@ -37,3 +37,4 @@ build/
 
 #log
 log/
+logs/

XNSimHtml/components/run-simulation.js

@@ -8,6 +8,8 @@ class RunSimulation extends HTMLElement {
         this.services = [];
         this.currentSimulationId = null;
         this.eventSource = null;
+        this.reconnectAttempts = 0;
+        this.maxReconnectAttempts = 3;
     }
 
     // 添加reactivate方法，用于从缓存中恢复时检查仿真状态
@@ -34,10 +36,42 @@ class RunSimulation extends HTMLElement {
             }
         }
         
-        // 如果有正在运行的仿真ID，尝试重新连接
+        // 检查是否有XNEngine进程在运行
-        if (this.currentSimulationId) {
+        try {
-            // 检查仿真是否仍在运行
+            const response = await fetch('/api/check-xnengine');
-            this.checkSimulationStatus(this.currentSimulationId);
+            const data = await response.json();
+            
+            if (data.running) {
+                this.showMessage('检测到正在运行的仿真，正在重新连接...');
+                
+                // 更新UI以反映运行状态
+                const runButton = this.shadowRoot.querySelector('#run-button');
+                if (runButton) {
+                    runButton.disabled = true;
+                    runButton.textContent = '运行中...';
+                }
+                
+                // 显示终止按钮
+                const stopButton = this.shadowRoot.querySelector('#stop-button');
+                if (stopButton) {
+                    stopButton.style.display = 'block';
+                }
+                
+                // 使用进程ID作为仿真ID重新连接
+                this.currentSimulationId = data.pid.toString();
+                this.connectToEventSource(this.currentSimulationId);
+                
+                // 清空并初始化输出框
+                const outputContent = this.shadowRoot.querySelector('#output-content');
+                outputContent.innerHTML = '重新连接到运行中的仿真...\n';
+            } else {
+                // 没有运行的XNEngine进程，重置UI
+                this.resetUIAfterCompletion();
+            }
+        } catch (error) {
+            console.error('检查XNEngine进程失败:', error);
+            this.showError('检查仿真状态失败: ' + error.message);
+            this.resetUIAfterCompletion();
         }
     }
     
@@ -79,8 +113,13 @@ class RunSimulation extends HTMLElement {
     }
 
     connectedCallback() {
+        // 先加载场景文件列表
         this.fetchScenarioFiles();
+        // 然后渲染UI
         this.render();
+        
+        // 最后检查是否有XNEngine进程在运行
+        this.checkAndConnectToExistingSimulation();
     }
 
     async fetchScenarioFiles() {
@@ -400,11 +439,32 @@ class RunSimulation extends HTMLElement {
             const simulationId = responseData.simulationId || this.currentSimulationId;
             this.currentSimulationId = simulationId;
             
+            // 如果是连接到现有进程，显示相应消息
+            if (responseData.isExisting) {
+                this.showMessage('已连接到运行中的仿真');
+                outputContent.innerHTML = '已连接到运行中的仿真...\n';
+                
+                // 如果有配置文件路径，自动选择
+                if (responseData.scenarioFile) {
+                    const scenarioSelect = this.shadowRoot.querySelector('#scenario-select');
+                    if (scenarioSelect) {
+                        // 检查配置文件是否在列表中
+                        const fileExists = Array.from(scenarioSelect.options).some(opt => opt.value === responseData.scenarioFile);
+                        if (fileExists) {
+                            scenarioSelect.value = responseData.scenarioFile;
+                            this.currentScenario = responseData.scenarioFile;
+                            // 更新模型和服务列表
+                            this.updateModelAndServiceLists();
+                        }
+                    }
+                }
+            } else {
+                this.showSuccess(`仿真已启动`);
+            }
+            
             // 设置SSE连接获取实时输出
             this.connectToEventSource(simulationId);
             
-            this.showSuccess(`仿真已启动`);
-            
         } catch (error) {
             console.error('执行仿真失败:', error);
             this.showError('执行仿真失败: ' + error.message);
@@ -459,13 +519,25 @@ class RunSimulation extends HTMLElement {
         this.eventSource.addEventListener('status', (event) => {
             try {
                 const data = JSON.parse(event.data);
+                console.log('收到状态事件:', data);
                 
                 if (data.running === false) {
                     // 仿真已经不存在或已结束
                     this.showMessage(data.message || '仿真不存在或已结束');
                     
+                    // 如果是进程不存在，尝试重新连接
+                    if (data.message === '仿真不存在或已结束' && this.reconnectAttempts < this.maxReconnectAttempts) {
+                        this.reconnectAttempts++;
+                        this.showMessage(`尝试重新连接 (${this.reconnectAttempts}/${this.maxReconnectAttempts})...`);
+                        setTimeout(() => this.checkAndConnectToExistingSimulation(), 1000);
+                        return;
+                    }
+                    
                     // 重置UI
                     this.resetUIAfterCompletion();
+                } else if (data.running === true) {
+                    // 更新状态为已连接
+                    this.showSuccess('已连接到运行中的仿真');
                 }
             } catch (error) {
                 console.error('处理状态事件失败:', error);
@@ -476,6 +548,7 @@ class RunSimulation extends HTMLElement {
         this.eventSource.addEventListener('completed', (event) => {
             try {
                 const data = JSON.parse(event.data);
+                console.log('收到完成事件:', data);  // 添加日志
                 
                 if (data.success) {
                     this.showSuccess('仿真执行成功');
@@ -494,6 +567,7 @@ class RunSimulation extends HTMLElement {
         this.eventSource.addEventListener('error', (event) => {
             try {
                 const data = JSON.parse(event.data);
+                console.log('收到错误事件:', data);  // 添加日志
                 this.showError(`仿真错误: ${data.message}`);
                 
                 // 重置UI
@@ -507,6 +581,7 @@ class RunSimulation extends HTMLElement {
         this.eventSource.addEventListener('terminated', (event) => {
             try {
                 const data = JSON.parse(event.data);
+                console.log('收到终止事件:', data);  // 添加日志
                 this.showMessage(`仿真已终止: ${data.message}`);
                 
                 // 在输出框中添加终止信息
@@ -524,6 +599,7 @@ class RunSimulation extends HTMLElement {
         this.eventSource.addEventListener('timeout', (event) => {
             try {
                 const data = JSON.parse(event.data);
+                console.log('收到超时事件:', data);  // 添加日志
                 this.showError(`仿真超时: ${data.message}`);
                 
                 // 在输出框中添加超时信息
@@ -537,16 +613,21 @@ class RunSimulation extends HTMLElement {
             }
         });
         
-        // 连接错误
+        // 修改连接错误处理
         this.eventSource.onerror = (error) => {
             console.error('SSE连接错误:', error);
             
-            // 检查是否已经清理了资源
+            // 检查连接状态
             if (this.eventSource && this.eventSource.readyState === 2) { // CLOSED
-                this.showError('实时输出连接已断开');
+                // 如果还有重连次数，尝试重新连接
-                
+                if (this.reconnectAttempts < this.maxReconnectAttempts) {
-                // 重置UI
+                    this.reconnectAttempts++;
-                this.resetUIAfterCompletion();
+                    this.showMessage(`连接断开，尝试重新连接 (${this.reconnectAttempts}/${this.maxReconnectAttempts})...`);
+                    setTimeout(() => this.checkAndConnectToExistingSimulation(), 1000);
+                } else {
+                    this.showError('实时输出连接已断开');
+                    this.resetUIAfterCompletion();
+                }
             }
         };
     }
@@ -577,8 +658,9 @@ class RunSimulation extends HTMLElement {
         // 关闭SSE连接
         this.closeEventSource();
         
-        // 清除当前仿真ID
+        // 清除当前仿真ID和重连计数
         this.currentSimulationId = null;
+        this.reconnectAttempts = 0;
     }
     
     async stopSimulation() {
@@ -878,6 +960,98 @@ class RunSimulation extends HTMLElement {
         const scenarioSelect = this.shadowRoot.querySelector('#scenario-select');
         scenarioSelect.addEventListener('change', (event) => this.onScenarioSelected(event));
     }
+
+    // 添加新方法：检查并连接到已有的仿真
+    async checkAndConnectToExistingSimulation() {
+        try {
+            const response = await fetch('/api/check-xnengine');
+            const data = await response.json();
+            
+            if (data.running) {
+                this.showMessage('检测到正在运行的仿真，正在重新连接...');
+                
+                // 更新UI以反映运行状态
+                const runButton = this.shadowRoot.querySelector('#run-button');
+                if (runButton) {
+                    runButton.disabled = true;
+                    runButton.textContent = '运行中...';
+                }
+                
+                // 显示终止按钮
+                const stopButton = this.shadowRoot.querySelector('#stop-button');
+                if (stopButton) {
+                    stopButton.style.display = 'block';
+                }
+                
+                // 使用进程ID作为仿真ID重新连接
+                this.currentSimulationId = data.pid.toString();
+                
+                // 确保场景文件列表已加载
+                if (this.scenarioFiles.length === 0) {
+                    await this.fetchScenarioFiles();
+                }
+                
+                // 如果有配置文件路径，自动选择并加载内容
+                if (data.scenarioFile) {
+                    const scenarioSelect = this.shadowRoot.querySelector('#scenario-select');
+                    if (scenarioSelect) {
+                        // 检查配置文件是否在列表中
+                        const fileExists = Array.from(scenarioSelect.options).some(opt => opt.value === data.scenarioFile);
+                        if (fileExists) {
+                            // 先设置当前场景
+                            this.currentScenario = data.scenarioFile;
+                            
+                            // 加载配置文件内容
+                            try {
+                                this.showMessage('加载配置文件内容...');
+                                const response = await fetch(`/api/file-content?path=${encodeURIComponent(data.scenarioFile)}`);
+                                
+                                if (!response.ok) {
+                                    throw new Error('无法获取配置文件内容');
+                                }
+                                
+                                const xmlContent = await response.text();
+                                this.parseScenarioXML(xmlContent);
+                                
+                                // 更新下拉框选择
+                                scenarioSelect.value = data.scenarioFile;
+                                
+                                // 更新模型和服务列表
+                                this.updateModelAndServiceLists();
+                                this.showMessage('配置文件加载完成');
+                            } catch (error) {
+                                console.error('加载配置文件失败:', error);
+                                this.showError('加载配置文件失败: ' + error.message);
+                            }
+                        } else {
+                            console.warn('配置文件不在列表中:', data.scenarioFile);
+                            this.showError('配置文件不在列表中: ' + data.scenarioFile);
+                        }
+                    }
+                }
+                
+                // 清空并初始化输出框
+                const outputContent = this.shadowRoot.querySelector('#output-content');
+                outputContent.innerHTML = '重新连接到运行中的仿真...\n';
+                
+                // 连接到SSE获取输出
+                this.connectToEventSource(this.currentSimulationId);
+                
+                // 更新状态为已连接
+                this.showSuccess('已连接到运行中的仿真');
+                
+                // 重置重连尝试次数
+                this.reconnectAttempts = 0;
+            } else {
+                // 如果没有运行中的仿真，重置UI
+                this.resetUIAfterCompletion();
+            }
+        } catch (error) {
+            console.error('检查XNEngine进程失败:', error);
+            this.showError('检查仿真状态失败: ' + error.message);
+            this.resetUIAfterCompletion();
+        }
+    }
 }
 
 customElements.define('run-simulation', RunSimulation); 

XNSimHtml/routes/run-simulation.js

@@ -1,18 +1,18 @@
 const express = require('express');
 const router = express.Router();
-const { spawn } = require('child_process');
+const { spawn, exec } = require('child_process');
 const path = require('path');
 const fs = require('fs').promises;
-
+const util = require('util');
-// 获取XNCore路径
+const execPromise = util.promisify(exec);
-function getXNCorePath() {
+const { 
-  const xnCorePath = process.env.XNCore || '';
+    getRunningXNEngineProcess, 
-  if (!xnCorePath) {
+    saveXNEngineProcess, 
-    console.error('警告: 环境变量XNCore未设置');
+    updateXNEngineProcessStatus, 
-    return null;
+    deleteXNEngineProcess,
-  }
+    getLatestRunningXNEngineProcess 
-  return xnCorePath;
+} = require('../utils/db-utils');
-}
+const { getXNCorePath } = require('../utils/file-utils');
 
 // 存储正在运行的仿真进程
 const runningSimulations = new Map();
@@ -22,412 +22,482 @@ const sseClients = new Map();
 
 // SSE中间件
 function setupSSE(req, res) {
-  // 设置SSE headers
+    // 设置SSE headers
-  res.writeHead(200, {
+    res.writeHead(200, {
-    'Content-Type': 'text/event-stream',
+        'Content-Type': 'text/event-stream',
-    'Cache-Control': 'no-cache',
+        'Cache-Control': 'no-cache',
-    'Connection': 'keep-alive'
+        'Connection': 'keep-alive'
-  });
+    });
-  
-  // 发送初始注释以保持连接
-  res.write(':\n\n');
-  
-  // 定期发送注释以保持连接
-  const keepAliveId = setInterval(() => {
-    res.write(':\n\n');
-  }, 15000);
-  
-  // 当客户端断开连接时清理
-  req.on('close', () => {
-    clearInterval(keepAliveId);
     
-    // 如果存在simulationId，从SSE客户端列表中移除
+    // 发送初始注释以保持连接
-    const simulationId = req.params.id;
+    res.write(':\n\n');
-    if (simulationId && sseClients.has(simulationId)) {
+    
-      sseClients.get(simulationId).delete(res);
+    // 定期发送注释以保持连接
-      if (sseClients.get(simulationId).size === 0) {
+    const keepAliveId = setInterval(() => {
-        sseClients.delete(simulationId);
+        res.write(':\n\n');
-      }
+    }, 15000);
-    }
+    
-  });
+    // 当客户端断开连接时清理
-  
+    req.on('close', () => {
-  return { res, keepAliveId };
+        clearInterval(keepAliveId);
+        
+        // 如果存在simulationId，从SSE客户端列表中移除
+        const simulationId = req.params.id;
+        if (simulationId && sseClients.has(simulationId)) {
+            sseClients.get(simulationId).delete(res);
+            if (sseClients.get(simulationId).size === 0) {
+                sseClients.delete(simulationId);
+            }
+        }
+    });
+    
+    return { res, keepAliveId };
 }
 
 // 向SSE客户端发送消息
 function sendSSEMessage(simulationId, event, data) {
-  if (!sseClients.has(simulationId)) return;
+    if (!sseClients.has(simulationId)) return;
-  
+    
-  const clients = sseClients.get(simulationId);
+    const clients = sseClients.get(simulationId);
-  const message = `event: ${event}\ndata: ${JSON.stringify(data)}\n\n`;
+    const message = `event: ${event}\ndata: ${JSON.stringify(data)}\n\n`;
-  
+    
-  for (const client of clients) {
+    for (const client of clients) {
-    client.write(message);
+        client.write(message);
-  }
+    }
 }
 
-// 获取仿真状态的API
+// 检查进程是否在运行
-router.get('/simulation-status/:id', (req, res) => {
+async function isProcessRunning(pid) {
-  const simulationId = req.params.id;
-  
-  if (runningSimulations.has(simulationId)) {
-    const simulation = runningSimulations.get(simulationId);
-    
-    res.json({
-      running: true,
-      startTime: simulation.startTime,
-      elapsedTime: Date.now() - simulation.startTime
-    });
-  } else {
-    res.json({
-      running: false,
-      message: '仿真不存在或已结束'
-    });
-  }
-});
-
-// 执行仿真引擎
-router.post('/run-simulation', async (req, res) => {
-  try {
-    const { args, id } = req.body;
-    const simulationId = id || Date.now().toString();
-    
-    if (!args || !Array.isArray(args)) {
-      return res.status(400).json({ 
-        error: '缺少必要参数', 
-        message: '缺少args参数或格式不正确' 
-      });
-    }
-    
-    // 如果相同ID的仿真已经在运行，先终止它
-    if (runningSimulations.has(simulationId)) {
-      const existingProcess = runningSimulations.get(simulationId);
-      existingProcess.process.kill('SIGTERM');
-      runningSimulations.delete(simulationId);
-      
-      // 通知连接的客户端仿真被强制停止
-      sendSSEMessage(simulationId, 'terminated', {
-        message: '仿真已被新的运行请求终止'
-      });
-    }
-    
-    // 获取XNCore路径
-    const xnCorePath = getXNCorePath();
-    if (!xnCorePath) {
-      return res.status(500).json({ 
-        error: 'XNCore未设置', 
-        message: '无法找到XNEngine可执行程序' 
-      });
-    }
-    
-    // 构建XNEngine路径
-    const enginePath = path.join(xnCorePath, 'XNEngine');
-    
-    // 检查引擎程序是否存在
     try {
-      await fs.access(enginePath);
+        process.kill(pid, 0);
+        return true;
     } catch (error) {
-      return res.status(404).json({ 
+        return false;
-        error: 'XNEngine不存在', 
-        message: `${enginePath} 不存在或无法访问` 
-      });
     }
-    
+}
-    // 直接使用用户提供的启动参数
+
-    // 启动仿真进程 - 设置stdio选项确保能捕获所有输出
+// 检查进程是否为XNEngine
-    const simProcess = spawn(enginePath, args, {
+async function isXNEngineProcess(pid) {
-      stdio: ['ignore', 'pipe', 'pipe'],
+    try {
-      env: { ...process.env, LANG: 'zh_CN.UTF-8' } // 确保中文输出正确显示
+        const { stdout } = await execPromise(`ps -p ${pid} -o comm=`);
-    });
+        return stdout.trim() === 'XNEngine';
-    
+    } catch (error) {
-    let output = '';
+        return false;
-    let errorOutput = '';
-    
-    // 收集标准输出，并推送到SSE
-    simProcess.stdout.on('data', (data) => {
-      const chunk = data.toString('utf8');
-      output += chunk;
-      
-      // 推送到SSE客户端
-      sendSSEMessage(simulationId, 'output', {
-        type: 'stdout',
-        data: chunk
-      });
-    });
-    
-    // 收集错误输出，并推送到SSE
-    simProcess.stderr.on('data', (data) => {
-      const chunk = data.toString('utf8');
-      errorOutput += chunk;
-      
-      // 推送到SSE客户端
-      sendSSEMessage(simulationId, 'output', {
-        type: 'stderr',
-        data: chunk
-      });
-    });
-    
-    // 设置超时（默认30秒，可由前端指定）
-    const timeout = req.body.timeout || 30000;
-    const timeoutId = setTimeout(() => {
-      if (runningSimulations.has(simulationId)) {
-        const simulation = runningSimulations.get(simulationId);
-        if (simulation.process.exitCode === null) {
-          simulation.process.kill('SIGTERM');
-          runningSimulations.delete(simulationId);
-          
-          // 推送超时事件到SSE客户端
-          sendSSEMessage(simulationId, 'timeout', {
-            message: `仿真执行超过 ${timeout/1000} 秒，已自动终止`
-          });
-          
-          if (!simulation.hasResponded) {
-            simulation.hasResponded = true;
-            res.status(504).json({ 
-              error: '仿真超时', 
-              message: `仿真执行超过 ${timeout/1000} 秒`, 
-              output: output,
-              errorOutput: errorOutput,
-              simulationId: simulationId
-            });
-          }
-        }
-      }
-    }, timeout);
-    
-    // 保存到运行中的仿真Map
-    runningSimulations.set(simulationId, {
-      process: simProcess,
-      timeoutId: timeoutId,
-      startTime: Date.now(),
-      output: output,
-      errorOutput: errorOutput,
-      hasResponded: false
-    });
-    
-    // 处理进程结束
-    simProcess.on('close', (code) => {
-      if (runningSimulations.has(simulationId)) {
-        const simulation = runningSimulations.get(simulationId);
-        clearTimeout(simulation.timeoutId);
-        
-        // 推送完成事件到SSE客户端
-        sendSSEMessage(simulationId, 'completed', {
-          exitCode: code,
-          success: code === 0,
-          message: code === 0 ? '仿真执行成功' : `仿真执行失败，退出码: ${code}`
-        });
-        
-        // 只有在尚未响应的情况下才发送响应
-        if (!simulation.hasResponded) {
-          simulation.hasResponded = true;
-          
-          if (code === 0) {
-            res.json({ 
-              success: true, 
-              message: '仿真执行成功', 
-              output: output,
-              errorOutput: errorOutput,
-              simulationId: simulationId
-            });
-          } else {
-            res.status(500).json({ 
-              error: '仿真执行失败', 
-              message: `仿真进程退出码: ${code}`, 
-              output: output,
-              errorOutput: errorOutput,
-              simulationId: simulationId
-            });
-          }
-        }
-        
-        // 从运行中的仿真Map移除
-        runningSimulations.delete(simulationId);
-      }
-    });
-    
-    // 处理进程错误
-    simProcess.on('error', (error) => {
-      if (runningSimulations.has(simulationId)) {
-        const simulation = runningSimulations.get(simulationId);
-        clearTimeout(simulation.timeoutId);
-        
-        // 推送错误事件到SSE客户端
-        sendSSEMessage(simulationId, 'error', {
-          message: `启动仿真进程失败: ${error.message}`
-        });
-        
-        // 只有在尚未响应的情况下才发送响应
-        if (!simulation.hasResponded) {
-          simulation.hasResponded = true;
-          res.status(500).json({ 
-            error: '启动仿真进程失败', 
-            message: error.message,
-            output: output,
-            errorOutput: errorOutput,
-            simulationId: simulationId
-          });
-        }
-        
-        // 从运行中的仿真Map移除
-        runningSimulations.delete(simulationId);
-      }
-    });
-    
-    // 立即响应，返回仿真ID，客户端可以通过SSE获取实时输出
-    if (!res.headersSent) {
-      res.json({
-        success: true,
-        message: '仿真已启动',
-        simulationId: simulationId
-      });
-      
-      // 标记为已响应
-      if (runningSimulations.has(simulationId)) {
-        runningSimulations.get(simulationId).hasResponded = true;
-      }
     }
-    
+}
-  } catch (error) {
-    res.status(500).json({ 
-      error: '运行仿真失败', 
-      message: error.message 
-    });
-  }
-});
 
 // 获取实时输出的SSE接口
-router.get('/simulation-output/:id', (req, res) => {
+router.get('/simulation-output/:id', async (req, res) => {
-  const simulationId = req.params.id;
+    const simulationId = req.params.id;
-  
-  // 验证仿真ID
-  if (!simulationId) {
-    return res.status(400).json({ error: '缺少仿真ID' });
-  }
-  
-  // 初始化SSE连接
-  const { res: sseRes } = setupSSE(req, res);
-  
-  // 将该连接添加到SSE客户端列表
-  if (!sseClients.has(simulationId)) {
-    sseClients.set(simulationId, new Set());
-  }
-  sseClients.get(simulationId).add(sseRes);
-  
-  // 如果仿真已经在运行，发送初始状态
-  if (runningSimulations.has(simulationId)) {
-    const simulation = runningSimulations.get(simulationId);
     
-    // 发送已累积的输出
+    // 验证仿真ID
-    if (simulation.output) {
+    if (!simulationId) {
-      sendSSEMessage(simulationId, 'output', {
+        return res.status(400).json({ error: '缺少仿真ID' });
-        type: 'stdout',
-        data: simulation.output
-      });
     }
     
-    if (simulation.errorOutput) {
+    // 初始化SSE连接
-      sendSSEMessage(simulationId, 'output', {
+    const { res: sseRes } = setupSSE(req, res);
-        type: 'stderr',
-        data: simulation.errorOutput
-      });
-    }
     
-    // 发送运行状态
+    // 将该连接添加到SSE客户端列表
-    sendSSEMessage(simulationId, 'status', {
+    if (!sseClients.has(simulationId)) {
-      running: true,
+        sseClients.set(simulationId, new Set());
-      startTime: simulation.startTime,
+    }
-      runTime: (Date.now() - simulation.startTime) / 1000
+    sseClients.get(simulationId).add(sseRes);
-    });
+    
-  } else {
+    try {
-    // 发送仿真不存在或已结束的消息
+        // 从数据库获取进程信息
-    sendSSEMessage(simulationId, 'status', {
+        const processInfo = await getRunningXNEngineProcess(simulationId);
-      running: false,
+        
-      message: '仿真不存在或已结束'
+        if (processInfo) {
-    });
+            // 检查进程是否真的在运行且是XNEngine进程
-  }
+            const isRunning = await isProcessRunning(processInfo.pid);
+            const isXNEngine = await isXNEngineProcess(processInfo.pid);
+            
+            if (isRunning && isXNEngine) {
+                // 发送运行状态
+                sendSSEMessage(simulationId, 'status', {
+                    running: true,
+                    pid: processInfo.pid,
+                    startTime: processInfo.start_time,
+                    message: '已连接到运行中的XNEngine进程'
+                });
+                
+                // 将进程添加到runningSimulations
+                runningSimulations.set(simulationId, {
+                    pid: processInfo.pid,
+                    startTime: new Date(processInfo.start_time).getTime(),
+                    output: '',
+                    errorOutput: '',
+                    logFile: processInfo.log_file
+                });
+                
+                // 使用tail命令来跟踪日志文件
+                const tailProcess = spawn('tail', ['-f', processInfo.log_file], {
+                    stdio: ['ignore', 'pipe', 'pipe']
+                });
+                
+                // 收集标准输出
+                tailProcess.stdout.on('data', (data) => {
+                    const chunk = data.toString('utf8');
+                    const simulation = runningSimulations.get(simulationId);
+                    if (simulation) {
+                        simulation.output += chunk;
+                    }
+                    
+                    // 推送到SSE客户端
+                    sendSSEMessage(simulationId, 'output', {
+                        type: 'stdout',
+                        data: chunk
+                    });
+                });
+                
+                // 当客户端断开连接时清理
+                req.on('close', () => {
+                    tailProcess.kill();
+                });
+                
+                // 当tail进程结束时
+                tailProcess.on('close', (code) => {
+                    runningSimulations.delete(simulationId);
+                    sendSSEMessage(simulationId, 'status', {
+                        running: false,
+                        message: '仿真进程已结束'
+                    });
+                });
+                
+                return;
+            } else {
+                // 进程已结束或不是XNEngine进程，删除数据库记录
+                await deleteXNEngineProcess(simulationId);
+            }
+        }
+        
+        // 如果没有找到运行中的进程，发送仿真不存在或已结束的消息
+        sendSSEMessage(simulationId, 'status', {
+            running: false,
+            message: '仿真不存在或已结束'
+        });
+        
+    } catch (error) {
+        console.error('处理SSE连接失败:', error);
+        sendSSEMessage(simulationId, 'status', {
+            running: false,
+            message: '连接失败: ' + error.message
+        });
+    }
 });
 
-// 终止仿真API
+// 修改run-simulation路由
-router.post('/stop-simulation', (req, res) => {
+router.post('/run-simulation', async (req, res) => {
-  try {
+    try {
-    const { id } = req.body;
+        const { args, id } = req.body;
-    
+        const simulationId = id || Date.now().toString();
-    if (!id) {
+        
-      return res.status(400).json({ 
+        if (!args || !Array.isArray(args)) {
-        error: '缺少必要参数', 
+            return res.status(400).json({ 
-        message: '缺少仿真ID' 
+                error: '缺少必要参数', 
-      });
+                message: '缺少args参数或格式不正确' 
+            });
+        }
+        
+        // 检查是否有XNEngine进程在运行
+        try {
+            const { stdout } = await execPromise('ps -ef | grep XNEngine | grep -v grep || true');
+            if (stdout.trim()) {
+                const processes = stdout.trim().split('\n');
+                // 按启动时间排序，最早的进程通常是主进程
+                const sortedProcesses = processes.map(line => {
+                    const parts = line.trim().split(/\s+/);
+                    return {
+                        pid: parts[1],
+                        ppid: parts[2],
+                        startTime: parts[4],
+                        cmd: parts.slice(7).join(' ')
+                    };
+                }).sort((a, b) => a.startTime.localeCompare(b.startTime));
+
+                // 找到主进程
+                const mainProcess = sortedProcesses[0];
+                
+                // 检查主进程是否真的在运行且是XNEngine进程
+                const isRunning = await isProcessRunning(mainProcess.pid);
+                const isXNEngine = await isXNEngineProcess(mainProcess.pid);
+                
+                if (isRunning && isXNEngine) {
+                    // 检查数据库中是否已有该进程记录
+                    const existingProcess = await getRunningXNEngineProcess(mainProcess.pid);
+                    
+                    if (!existingProcess) {
+                        // 创建日志文件
+                        const logDir = path.join(process.cwd(), 'logs');
+                        await fs.mkdir(logDir, { recursive: true });
+                        const logFile = path.join(logDir, `xnengine_${mainProcess.pid}.log`);
+                        
+                        // 从命令行参数中提取配置文件路径
+                        const scenarioFile = args[0];
+                        
+                        // 将进程信息写入数据库
+                        await saveXNEngineProcess({
+                            pid: mainProcess.pid,
+                            log_file: logFile,
+                            start_time: new Date().toISOString(),
+                            cmd: mainProcess.cmd,
+                            scenario_file: scenarioFile
+                        });
+                    }
+                    
+                    // 返回成功响应
+                    res.json({
+                        success: true,
+                        message: '已连接到运行中的仿真',
+                        simulationId: mainProcess.pid.toString(),
+                        isExisting: true,
+                        startTime: mainProcess.startTime,
+                        totalProcesses: sortedProcesses.length,
+                        scenarioFile: (existingProcess && existingProcess.scenario_file) || args[0]
+                    });
+                    return;
+                } else {
+                    // 进程已结束或不是XNEngine进程，删除数据库记录
+                    await deleteXNEngineProcess(mainProcess.pid);
+                }
+            }
+        } catch (error) {
+            console.error('检查XNEngine进程失败:', error);
+        }
+        
+        // 如果没有找到运行中的进程，则启动新的仿真
+        // 获取XNCore路径
+        const xnCorePath = getXNCorePath();
+        if (!xnCorePath) {
+            return res.status(500).json({ 
+                error: 'XNCore未设置', 
+                message: '无法找到XNEngine可执行程序' 
+            });
+        }
+        
+        // 构建XNEngine路径
+        const enginePath = path.join(xnCorePath, 'XNEngine');
+        
+        // 检查引擎程序是否存在
+        try {
+            await fs.access(enginePath);
+        } catch (error) {
+            return res.status(404).json({ 
+                error: 'XNEngine不存在', 
+                message: `${enginePath} 不存在或无法访问` 
+            });
+        }
+
+        // 创建日志文件
+        const logDir = path.join(process.cwd(), 'logs');
+        await fs.mkdir(logDir, { recursive: true });
+        const logFile = path.join(logDir, `xnengine_${simulationId}.log`);
+        
+        // 使用nohup启动进程，将输出重定向到日志文件
+        const cmd = `nohup ${enginePath} ${args.join(' ')} > ${logFile} 2>&1 & echo $!`;
+        const { stdout: pid } = await execPromise(cmd);
+        const processId = parseInt(pid.trim());
+        
+        // 等待一小段时间确保进程启动
+        await new Promise(resolve => setTimeout(resolve, 1000));
+        
+        // 检查进程是否成功启动且是XNEngine进程
+        const isRunning = await isProcessRunning(processId);
+        const isXNEngine = await isXNEngineProcess(processId);
+        
+        if (isRunning && isXNEngine) {
+            // 将进程信息写入数据库
+            await saveXNEngineProcess({
+                pid: processId,
+                log_file: logFile,
+                start_time: new Date().toISOString(),
+                cmd: `${enginePath} ${args.join(' ')}`,
+                scenario_file: args[0]
+            });
+            
+            // 保存到运行中的仿真Map
+            runningSimulations.set(simulationId, {
+                pid: processId,
+                startTime: Date.now(),
+                output: '',
+                errorOutput: '',
+                logFile: logFile
+            });
+            
+            // 立即响应，返回仿真ID
+            res.json({
+                success: true,
+                message: '仿真已启动',
+                simulationId: processId.toString(),
+                scenarioFile: args[0]
+            });
+            
+            // 启动一个后台任务来监控日志文件
+            const tailProcess = spawn('tail', ['-f', logFile], {
+                stdio: ['ignore', 'pipe', 'pipe']
+            });
+            
+            // 收集输出
+            tailProcess.stdout.on('data', (data) => {
+                const chunk = data.toString('utf8');
+                const simulation = runningSimulations.get(simulationId);
+                if (simulation) {
+                    simulation.output += chunk;
+                }
+                
+                // 推送到SSE客户端
+                sendSSEMessage(simulationId, 'output', {
+                    type: 'stdout',
+                    data: chunk
+                });
+            });
+            
+            // 当tail进程结束时
+            tailProcess.on('close', (code) => {
+                runningSimulations.delete(simulationId);
+                // 删除数据库中的进程记录
+                deleteXNEngineProcess(processId);
+                sendSSEMessage(simulationId, 'status', {
+                    running: false,
+                    message: '仿真进程已结束'
+                });
+            });
+        } else {
+            // 进程启动失败或不是XNEngine进程
+            await deleteXNEngineProcess(processId);
+            res.status(500).json({ 
+                error: '启动仿真失败', 
+                message: '进程启动后立即退出或不是XNEngine进程' 
+            });
+        }
+        
+    } catch (error) {
+        res.status(500).json({ 
+            error: '运行仿真失败', 
+            message: error.message 
+        });
     }
-    
-    // 检查仿真是否在运行
-    if (!runningSimulations.has(id)) {
-      return res.status(404).json({ 
-        error: '仿真不存在', 
-        message: '没有找到指定ID的仿真' 
-      });
-    }
-    
-    // 获取仿真信息
-    const simulation = runningSimulations.get(id);
-    
-    // 终止仿真进程
-    simulation.process.kill('SIGTERM');
-    
-    // 清除超时
-    clearTimeout(simulation.timeoutId);
-    
-    // 推送终止事件到SSE客户端
-    sendSSEMessage(id, 'terminated', {
-      message: '仿真已手动终止'
-    });
-    
-    // 从运行中的仿真Map移除
-    runningSimulations.delete(id);
-    
-    // 计算运行时间
-    const runTime = (Date.now() - simulation.startTime) / 1000;
-    
-    // 响应结果
-    res.json({ 
-      success: true, 
-      message: `仿真已终止，运行时间: ${runTime.toFixed(2)}秒`, 
-      output: simulation.output,
-      errorOutput: simulation.errorOutput
-    });
-    
-  } catch (error) {
-    res.status(500).json({ 
-      error: '终止仿真失败', 
-      message: error.message 
-    });
-  }
 });
 
-// 获取所有运行中的仿真
+// 修改stop-simulation路由
-router.get('/running-simulations', (req, res) => {
+router.post('/stop-simulation', async (req, res) => {
-  try {
+    try {
-    const simulations = [];
+        const { id } = req.body;
-    
+        
-    for (const [id, simulation] of runningSimulations.entries()) {
+        if (!id) {
-      simulations.push({
+            return res.status(400).json({ 
-        id: id,
+                error: '缺少必要参数', 
-        startTime: simulation.startTime,
+                message: '缺少仿真ID' 
-        runTime: (Date.now() - simulation.startTime) / 1000
+            });
-      });
+        }
+        
+        // 从数据库获取进程信息
+        const processInfo = await getRunningXNEngineProcess(id);
+        
+        if (processInfo) {
+            // 检查进程是否在运行且是XNEngine进程
+            const isRunning = await isProcessRunning(processInfo.pid);
+            const isXNEngine = await isXNEngineProcess(processInfo.pid);
+            
+            if (isRunning && isXNEngine) {
+                // 终止进程
+                try {
+                    process.kill(processInfo.pid, 'SIGTERM');
+                    // 等待进程终止
+                    await new Promise(resolve => setTimeout(resolve, 1000));
+                    
+                    // 检查进程是否真的终止了
+                    const stillRunning = await isProcessRunning(processInfo.pid);
+                    if (stillRunning) {
+                        // 如果还在运行，强制终止
+                        process.kill(processInfo.pid, 'SIGKILL');
+                    }
+                    
+                    // 删除数据库中的进程记录
+                    await deleteXNEngineProcess(id);
+                    
+                    // 推送终止事件到SSE客户端
+                    sendSSEMessage(id, 'terminated', {
+                        message: '仿真已终止'
+                    });
+                    
+                    // 从运行中的仿真Map移除
+                    runningSimulations.delete(id);
+                    
+                    res.json({ 
+                        success: true, 
+                        message: '仿真已终止'
+                    });
+                } catch (error) {
+                    console.error('终止进程失败:', error);
+                    res.status(500).json({ 
+                        error: '终止仿真失败', 
+                        message: error.message 
+                    });
+                }
+            } else {
+                // 进程已经不在运行或不是XNEngine进程，删除数据库记录
+                await deleteXNEngineProcess(id);
+                res.json({ 
+                    success: true, 
+                    message: '仿真进程已经停止'
+                });
+            }
+        } else {
+            res.json({ 
+                success: true, 
+                message: '没有找到运行中的仿真进程'
+            });
+        }
+    } catch (error) {
+        res.status(500).json({ 
+            error: '终止仿真失败', 
+            message: error.message 
+        });
+    }
+});
+
+// 修改check-xnengine路由
+router.get('/check-xnengine', async (req, res) => {
+    try {
+        // 从数据库获取最新的运行中进程
+        const processInfo = await getLatestRunningXNEngineProcess();
+        
+        if (processInfo) {
+            // 检查进程是否真的在运行且是XNEngine进程
+            const isRunning = await isProcessRunning(processInfo.pid);
+            const isXNEngine = await isXNEngineProcess(processInfo.pid);
+            
+            if (isRunning && isXNEngine) {
+                res.json({
+                    running: true,
+                    pid: processInfo.pid,
+                    startTime: processInfo.start_time,
+                    cmd: processInfo.cmd,
+                    message: 'XNEngine进程正在运行'
+                });
+            } else {
+                // 进程已结束或不是XNEngine进程，删除数据库记录
+                await deleteXNEngineProcess(processInfo.pid);
+                res.json({
+                    running: false,
+                    message: 'XNEngine进程已停止'
+                });
+            }
+        } else {
+            res.json({
+                running: false,
+                message: '未找到运行中的XNEngine进程'
+            });
+        }
+    } catch (error) {
+        console.error('检查XNEngine进程失败:', error);
+        res.status(500).json({
+            error: '检查XNEngine进程失败',
+            message: error.message
+        });
     }
-    
-    res.json({ 
-      count: simulations.length,
-      simulations: simulations
-    });
-    
-  } catch (error) {
-    res.status(500).json({ 
-      error: '获取运行中的仿真失败', 
-      message: error.message 
-    });
-  }
 });
 
 module.exports = router; 

XNSimHtml/utils/db-utils.js

@@ -1534,6 +1534,190 @@ function addSystemLog(logData) {
   }
 }
 
+// 获取运行中的XNEngine进程
+function getRunningXNEngineProcess(pid) {
+  try {
+    const xnCorePath = getXNCorePath();
+    if (!xnCorePath) {
+      throw new Error('XNCore环境变量未设置，无法获取数据库路径');
+    }
+    
+    const dbPath = xnCorePath + '/database/XNSim.db';
+    if (!dbPath) {
+      throw new Error('无法找到数据库文件');
+    }
+          
+    // 打开数据库连接
+    const db = new Database(dbPath, { readonly: true });
+    
+    // 创建进程表（如果不存在）
+    db.prepare(`
+      CREATE TABLE IF NOT EXISTS xnengine_processes (
+        pid INTEGER PRIMARY KEY,
+        log_file TEXT,
+        start_time TEXT,
+        cmd TEXT,
+        status TEXT DEFAULT 'running',
+        scenario_file TEXT
+      )
+    `).run();
+    
+    const process = db.prepare('SELECT * FROM xnengine_processes WHERE pid = ?').get(pid);
+    db.close();
+    
+    return process;
+  } catch (error) {
+    console.error('获取XNEngine进程信息失败:', error);
+    throw error;
+  }
+}
+
+// 保存XNEngine进程信息
+function saveXNEngineProcess(processData) {
+  try {
+    const xnCorePath = getXNCorePath();
+    if (!xnCorePath) {
+      throw new Error('XNCore环境变量未设置，无法获取数据库路径');
+    }
+    
+    const dbPath = xnCorePath + '/database/XNSim.db';
+    if (!dbPath) {
+      throw new Error('无法找到数据库文件');
+    }
+          
+    // 打开数据库连接
+    const db = new Database(dbPath);
+    
+    // 创建进程表（如果不存在）
+    db.prepare(`
+      CREATE TABLE IF NOT EXISTS xnengine_processes (
+        pid INTEGER PRIMARY KEY,
+        log_file TEXT,
+        start_time TEXT,
+        cmd TEXT,
+        status TEXT DEFAULT 'running',
+        scenario_file TEXT
+      )
+    `).run();
+    
+    const result = db.prepare(`
+      INSERT INTO xnengine_processes (pid, log_file, start_time, cmd, scenario_file)
+      VALUES (?, ?, ?, ?, ?)
+    `).run(
+      processData.pid,
+      processData.log_file,
+      processData.start_time,
+      processData.cmd,
+      processData.scenario_file || null
+    );
+    
+    db.close();
+    
+    return {
+      success: true,
+      message: 'XNEngine进程信息保存成功'
+    };
+  } catch (error) {
+    console.error('保存XNEngine进程信息失败:', error);
+    throw error;
+  }
+}
+
+// 更新XNEngine进程状态
+function updateXNEngineProcessStatus(pid, status) {
+  try {
+    const xnCorePath = getXNCorePath();
+    if (!xnCorePath) {
+      throw new Error('XNCore环境变量未设置，无法获取数据库路径');
+    }
+    
+    const dbPath = xnCorePath + '/database/XNSim.db';
+    if (!dbPath) {
+      throw new Error('无法找到数据库文件');
+    }
+          
+    // 打开数据库连接
+    const db = new Database(dbPath);
+    
+    const result = db.prepare(`
+      UPDATE xnengine_processes 
+      SET status = ? 
+      WHERE pid = ?
+    `).run(status, pid);
+    
+    db.close();
+    
+    return {
+      success: true,
+      message: 'XNEngine进程状态更新成功'
+    };
+  } catch (error) {
+    console.error('更新XNEngine进程状态失败:', error);
+    throw error;
+  }
+}
+
+// 删除XNEngine进程信息
+function deleteXNEngineProcess(pid) {
+  try {
+    const xnCorePath = getXNCorePath();
+    if (!xnCorePath) {
+      throw new Error('XNCore环境变量未设置，无法获取数据库路径');
+    }
+    
+    const dbPath = xnCorePath + '/database/XNSim.db';
+    if (!dbPath) {
+      throw new Error('无法找到数据库文件');
+    }
+          
+    // 打开数据库连接
+    const db = new Database(dbPath);
+    
+    const result = db.prepare('DELETE FROM xnengine_processes WHERE pid = ?').run(pid);
+    db.close();
+    
+    return {
+      success: true,
+      message: 'XNEngine进程信息删除成功'
+    };
+  } catch (error) {
+    console.error('删除XNEngine进程信息失败:', error);
+    throw error;
+  }
+}
+
+// 获取最新的运行中XNEngine进程
+function getLatestRunningXNEngineProcess() {
+  try {
+    const xnCorePath = getXNCorePath();
+    if (!xnCorePath) {
+      throw new Error('XNCore环境变量未设置，无法获取数据库路径');
+    }
+    
+    const dbPath = xnCorePath + '/database/XNSim.db';
+    if (!dbPath) {
+      throw new Error('无法找到数据库文件');
+    }
+          
+    // 打开数据库连接
+    const db = new Database(dbPath, { readonly: true });
+    
+    const process = db.prepare(`
+      SELECT * FROM xnengine_processes 
+      WHERE status = ? 
+      ORDER BY start_time DESC 
+      LIMIT 1
+    `).get('running');
+    
+    db.close();
+    
+    return process;
+  } catch (error) {
+    console.error('获取最新XNEngine进程信息失败:', error);
+    throw error;
+  }
+}
+
 module.exports = {
   getATAChapters,
   getModelsByChapterId,
@@ -1560,5 +1744,10 @@ module.exports = {
   deleteTodo,
   getUsers,
   getSystemLogs,
-  addSystemLog
+  addSystemLog,
+  getRunningXNEngineProcess,
+  saveXNEngineProcess,
+  updateXNEngineProcessStatus,
+  deleteXNEngineProcess,
+  getLatestRunningXNEngineProcess
 };