报错集锦

1.在node后端使用express中的multer中间件来实现文件上传时报错

　　node multer 报错unexpected field

1 var express=require('express');
2 
3 var router=express.router();
4
5 var upload=require('...')


router.post('/upload',upload.single('fileid'));

　　原因：upload.single()里面的参数fileid需要和前端from表单中input输入框的name属性的值保持一致