修复错误

backend/file.js

@@ -8,6 +8,10 @@ const mkdirPSync = location => {
     let folders = parsedPathObj.dir.split(path.sep)
     folders.push(parsedPathObj.base)
     for(let part of folders) {
+        if (part.indexOf(':') > -1) { // 修复 Windows 下面路径错误
+            continue
+        }
+
         curDir = path.join(curDir, part)
         if (!fs.existsSync(curDir)) {
             fs.mkdirSync(curDir)

backend/main.js

@@ -56,4 +56,7 @@ app.use(bodyParser({multipart: true}))
 app.use(async (ctx, next) => fileContent(ctx, next))
 app.use(async (ctx, next) => attachment(ctx, next))
 
-app.listen(3000)
+const port = 3000
+app.listen(port)
+
+console.log(`访问地址：http://localhost:${port}`)