修复服务器端错误处理并添加健康检查端点

server.js

@@ -36,6 +36,46 @@ async function testDbConnection() {
 testDbConnection();
 
 const server = http.createServer(async (req, res) => {
+  // 健康检查端点
+  if (req.method === 'GET' && req.url === '/health') {
+    try {
+      // 测试数据库连接
+      const [rows] = await pool.execute('SELECT 1');
+      
+      // 测试OSS连接
+      const ossStatus = await OssUploader.testConnection();
+      
+      res.writeHead(200, { 
+        'Content-Type': 'application/json',
+        'Access-Control-Allow-Origin': '*',
+        'Access-Control-Allow-Methods': 'POST, GET, OPTIONS',
+        'Access-Control-Allow-Headers': 'Content-Type'
+      });
+      res.end(JSON.stringify({ 
+        success: true, 
+        status: 'healthy',
+        database: 'connected',
+        oss: ossStatus.success ? 'connected' : 'disconnected',
+        timestamp: new Date().toISOString()
+      }));
+    } catch (error) {
+      console.error('健康检查失败:', error.message);
+      res.writeHead(503, { 
+        'Content-Type': 'application/json',
+        'Access-Control-Allow-Origin': '*',
+        'Access-Control-Allow-Methods': 'POST, GET, OPTIONS',
+        'Access-Control-Allow-Headers': 'Content-Type'
+      });
+      res.end(JSON.stringify({ 
+        success: false, 
+        status: 'unhealthy',
+        error: error.message,
+        timestamp: new Date().toISOString()
+      }));
+    }
+    return;
+  }
+
   // 处理GET请求，获取最新的合格证信息
   if (req.method === 'GET' && req.url === '/getLatestCertificate') {
     try {
@@ -76,6 +116,7 @@ const server = http.createServer(async (req, res) => {
       });
       
       req.on('end', async () => {
+        try {
           // 解析表单数据
           const formData = new URLSearchParams(body);
           const certificate = {
@@ -89,6 +130,17 @@ const server = http.createServer(async (req, res) => {
             signature: formData.get('signature')
           };
           
+          console.log('接收到的表单数据:', {
+            subjectName: certificate.subjectName,
+            contact: certificate.contact,
+            productName: certificate.productName,
+            weight: certificate.weight,
+            basis: certificate.basis,
+            origin: certificate.origin,
+            date: certificate.date,
+            hasSignature: !!certificate.signature
+          });
+          
           // 处理手写签名，上传到OSS
           let signatureUrl = null;
           if (certificate.signature) {
@@ -117,6 +169,8 @@ const server = http.createServer(async (req, res) => {
             [certificate.subjectName, certificate.contact, certificate.productName, certificate.weight, certificate.basis, certificate.origin, certificate.date, signatureUrl]
           );
           
+          console.log('数据插入数据库成功');
+          
           // 返回成功响应，确保返回的signature是OSS URL
           const responseCertificate = {
             ...certificate,
@@ -130,6 +184,16 @@ const server = http.createServer(async (req, res) => {
             'Access-Control-Allow-Headers': 'Content-Type'
           });
           res.end(JSON.stringify({ success: true, certificate: responseCertificate }));
+        } catch (error) {
+          console.error('处理表单数据失败:', error.message);
+          res.writeHead(500, { 
+            'Content-Type': 'application/json',
+            'Access-Control-Allow-Origin': '*',
+            'Access-Control-Allow-Methods': 'POST, GET, OPTIONS',
+            'Access-Control-Allow-Headers': 'Content-Type'
+          });
+          res.end(JSON.stringify({ success: false, error: '处理数据失败，请重试' }));
+        }
       });
     } catch (error) {
       console.error('保存合格证信息失败:', error.message);