fix: see an error

app.js

 const express = require('express');
+var createError = require('http-errors');
 const bodyParser = require('body-parser');
 const dmdb = require('dmdb'); // 达梦数据库驱动
 
@@ -10,7 +11,30 @@ const app = express();
 const port = 8829;
 
 // 中间件
-app.use(bodyParser.json());
+app.use(bodyParser.json({
+  verify(req, res, buf, encoding) {
+    // 保存原始请求体
+    req.rawBody = buf.toString();
+  }
+}));
+
+// 添加错误处理中间件来捕获JSON解析错误
+app.use((err, req, res, next) => {
+  if (err instanceof SyntaxError) {
+    console.error('JSON解析错误:', err.message);
+    
+    // 可以查看原始请求体内容
+    const rawBody = req.rawBody || req.body || '无法获取原始请求体';
+    console.log('原始请求体:', rawBody);
+    
+    return res.status(400).json({
+      error: '无效的JSON格式',
+      message: err.message,
+      rawBody
+    });
+  }
+  next(err); // 传递其他错误
+});
 
 const dmHost = '10.51.210.4';
 const dmPort = 5237;

package-lock.json

@@ -11,7 +11,8 @@
       "dependencies": {
         "body-parser": "^1.20.3",
         "dmdb": "^1.0.33801",
-        "express": "^4.21.2"
+        "express": "^4.21.2",
+        "http-errors": "^2.0.0"
       }
     },
     "node_modules/@napi-rs/snappy-android-arm-eabi": {

package.json

@@ -11,6 +11,7 @@
   "dependencies": {
     "body-parser": "^1.20.3",
     "dmdb": "^1.0.33801",
-    "express": "^4.21.2"
+    "express": "^4.21.2",
+    "http-errors": "^2.0.0"
   }
 }