WEB端实现文件夹上传

webkitdirectory属性。这个属性加上之后，就是选择文件夹，然后根据自己业务上传至后台；
前端代码：

<form action="${ctxPath}/invoice/uploadFolder" method="post" enctype="multipart/form-data">
	<input name="chooseFolder" type="file" id="chooseFolder" webkitdirectory/> 
	<input type="submit" id="uploadFolder" style="display : none"/> 
</form>
<iframe name="form" id="form" style="display:none"></iframe>

监听上传，ajax提交请求：

/* 监听上传文件夹按钮 */
			$("#chooseFolder").on("change", function() {
			 	var sIndex = layer.msg("识别数据中，请稍候", {icon:16, time:false, shade:0.1});
				dataList = [];
				var fileList = [];
				var files = this.files;
			    console.log(files);
			    for(var i = 0;i<files.length;i++){
			    	fileList.push(files[i])
			    }
		        let formData = new FormData()
		        formData.append("chooseFolder",files);
		        fileList.forEach(function (file) {
		        	formData.append('chooseFolder',file, file.name)
		        })
		        $.ajax({
	                url: "${ctxPath}/invoice/uploadFolder",
	                data:  formData,
	                type: "Post",
	                dataType: "formData",
	                cache: false,//上传文件无需缓存
	                processData: false,//用于对data参数进行序列化处理 这里必须false
	                contentType: false, //必须
	                complete: function(result) {
	                	var responseText = result.responseText
	                	var data = JSON.parse(responseText)

	                	data.data.forEach(function (d){
	                		dataList.push(d);
	                	})
	                	tableInfo.reload({
							data: dataList,
							limit: dataList.length,
						});
	                	layer.close(sIndex);
	        		}
	            })
			});
 后端Controller:@RequestMapping("uploadFolder")
public String uploadFolder(@RequestParam("chooseFolder") MultipartFile[] chooseFolder, HttpServletRequest request) throws IOException {

     for(MultipartFile myFile: chooseFolder){
         if(myFile.isEmpty()){
	            System.out.println("空");
	     }else {
	            System.out.println("文件长度" + myFile.getSize());
	            System.out.println("文件类型" + myFile.getContentType());
	            System.out.println("文件名" + myFile.getName());
	            System.out.println("文件原名" + myFile.getOriginalFilename());
	            System.out.println("*********************************");

                // 写处理图片业务
         }
     }
}

参考文章：http://blog.ncmem.com/wordpress/2023/11/06/web端实现文件夹上传/