修复Prometheus连接错误的问题

server/index.js

@@ -154,10 +154,11 @@ app.get('/api/sources', async (req, res) => {
 
 // Add a new Prometheus source
 app.post('/api/sources', async (req, res) => {
-  const { name, url, description } = req.body;
+  let { name, url, description } = req.body;
   if (!name || !url) {
     return res.status(400).json({ error: 'Name and URL are required' });
   }
+  if (!/^https?:\/\//i.test(url)) url = 'http://' + url;
   try {
     const [result] = await db.query(
       'INSERT INTO prometheus_sources (name, url, description) VALUES (?, ?, ?)',
@@ -173,7 +174,8 @@ app.post('/api/sources', async (req, res) => {
 
 // Update a Prometheus source
 app.put('/api/sources/:id', async (req, res) => {
-  const { name, url, description } = req.body;
+  let { name, url, description } = req.body;
+  if (url && !/^https?:\/\//i.test(url)) url = 'http://' + url;
   try {
     await db.query(
       'UPDATE prometheus_sources SET name = ?, url = ?, description = ? WHERE id = ?',
@@ -200,7 +202,8 @@ app.delete('/api/sources/:id', async (req, res) => {
 
 // Test connection to a Prometheus source
 app.post('/api/sources/test', async (req, res) => {
-  const { url } = req.body;
+  let { url } = req.body;
+  if (url && !/^https?:\/\//i.test(url)) url = 'http://' + url;
   try {
     const version = await prometheusService.testConnection(url);
     res.json({ status: 'ok', version });

server/prometheus-service.js

@@ -6,8 +6,12 @@ const QUERY_TIMEOUT = 10000;
  * Create an axios instance for a given Prometheus URL
  */
 function createClient(baseUrl) {
+  let url = baseUrl.replace(/\/+$/, '');
+  if (!/^https?:\/\//i.test(url)) {
+    url = 'http://' + url;
+  }
   return axios.create({
-    baseURL: baseUrl.replace(/\/+$/, ''),
+    baseURL: url,
     timeout: QUERY_TIMEOUT
   });
 }