fix: decode url for middleware

packages/vite/src/node/server/index.ts

@@ -21,6 +21,7 @@ import {
   indexHtmlMiddleware
 } from './middlewares/indexHtml'
 import history from 'connect-history-api-fallback'
+import { decodeURIMiddleware } from './middlewares/decodeURI'
 import {
   serveRawFsMiddleware,
   servePublicMiddleware,
@@ -486,6 +487,9 @@ export async function createServer(
     res.end('pong')
   })
 
+  //decode request url
+  middlewares.use(decodeURIMiddleware())
+
   // serve static files under /public
   // this applies before the transform middleware so that these files are served
   // as-is without transforms.

packages/vite/src/node/server/middlewares/decodeURI.ts

@@ -0,0 +1,10 @@
+import { Connect } from 'types/connect'
+
+export function decodeURIMiddleware(): Connect.NextHandleFunction {
+  // Keep the named function. The name is visible in debug logs via `DEBUG=connect:dispatcher ...`
+  return function viteDecoreURIMiddleware(req, _, next) {
+    // #2195
+    req.url = decodeURI(req.url!)
+    next()
+  }
+}