今天上传多文件时报了个错MulterError: Unexpected field

这里代码反复检查没有出错

const express = require('express');
const router = express.Router();
const path = require('path');

/**
文件接收器
 **/
const multer = require('multer');
const { log } = require('console');
// 生成仓库信息
const storage = multer.diskStorage({
	// 设定存储路径
	destination:function(req,file,cb){
		// req本次请求信息
		// file本次请求的文件
		// cb回调函数,利用回调函数来设定存储路径
		cb(null,'./uploads')
		// 第一个参数null，表示不要修改二进制流文件
	},
	
	// 设定文件名称
	filename:function(req,file,cb){
		// 拿到文件名
		const tmp = path.extname(file.originalname);
		// 根据文件时间、随机数、后缀名生成新的文件名
		const date = `${new Date().getTime()}`;
		const random = `${Math.random().toString().slice(2)}`;
		const file_name = `avatar_${date}-${random}${tmp}`;
		// cb回调函数,利用回调函数来设定文件名称
		cb(null,file_name);
	}
});
const fileUpload = multer({storage});

/* 
暴露 
 */
router.post('/upload',fileUpload.array('photo',3),(req,res)=>{
	try{
		console.log(123);
	}catch(e){
		console.log(e);
	}
});
module.exports = router;

报错信息

MulterError: Unexpected field
    at wrappedFileFilter (D:\nodeJsProject\test\node_modules\multer\index.js:40:19)
    at Multipart.<anonymous> (D:\nodeJsProject\test\node_modules\multer\lib\make-middleware.js:107:7)
    at Multipart.emit (node:events:527:28)
    at HeaderParser.cb (D:\nodeJsProject\test\node_modules\busboy\lib\types\multipart.js:358:14)
    at HeaderParser.push (D:\nodeJsProject\test\node_modules\busboy\lib\types\multipart.js:162:20)
    at SBMH.ssCb [as _cb] (D:\nodeJsProject\test\node_modules\busboy\lib\types\multipart.js:394:37)
    at feed (D:\nodeJsProject\test\node_modules\streamsearch\lib\sbmh.js:248:10)
    at SBMH.push (D:\nodeJsProject\test\node_modules\streamsearch\lib\sbmh.js:104:16)
    at Multipart._write (D:\nodeJsProject\test\node_modules\busboy\lib\types\multipart.js:567:19)
    at writeOrBuffer (node:internal/streams/writable:389:12)

最后发现问题是下面这个表单代码from少了闭合标签

<div class="center">单文件上传</div>
		<div class="center">
			<form action="http://localhost:8888/file/upload" method="POST" enctype="multipart/form-data">
				<input type="file" name="avatar">
				<button>单文件上传</button>
			
		</div>
		<br><br><br>
		<div class="center">多文件上传</div>
		<div class="center">
			<form action="http://localhost:8888/multiple/upload" method="POST" enctype="multipart/form-data">
				<input type="file" name="photo" multiple="multiple">
				<button>多文件上传</button>
			
		</div>

改正为

<div class="center">单文件上传</div>
		<div class="center">
			<form action="http://localhost:8888/file/upload" method="POST" enctype="multipart/form-data">
				<input type="file" name="avatar">
				<button>单文件上传</button>
			</form>
		</div>
		<br><br><br>
		<div class="center">多文件上传</div>
		<div class="center">
			<form action="http://localhost:8888/multiple/upload" method="POST" enctype="multipart/form-data">
				<input type="file" name="photo" multiple="multiple">
				<button>多文件上传</button>
			</form>
		</div>

问题解决