java Springboot实现多文件上传功能

 <div class="layui-form-item"> <label class="layui-form-label">上传文件</label><div class="layui-input-block"> <div class="layui-upload"> <button type="button" class="layui-btn layui-btn-normal" id="testList">选择多文件</button><div class="layui-upload-list"> <table class="layui-table"> <thead> <tr><th>文件名</th><th>大小</th><th>状态</th><th>操作</th></tr></thead><tbody id="demoList"></tbody></table></div><button type="button" class="layui-btn" id="testListAction">开始上传</button></div></div></div>

 layui.use('upload', function(){ var $ = layui.jquery,upload = layui.upload; //多文件列表示例 var demoListView = $('#demoList') ,uploadListIns = upload.render({ elem: '#testList' ,url: '/upload' ,accept: 'file' ,data:{} //可放扩展数据 key-value ,multiple: true ,auto: false ,bindAction<em style="color:transparent">来源gao.dai.ma.com搞@代*码网</em>: '#testListAction' ,choose: function(obj){ var files = this.files = obj.pushFile(); //将每次选择的文件追加到文件队列 //读取本地文件 obj.preview(function(index, file, result){ var tr = $(['<tr id="upload-'+ index +'">' ,'<td>'+ file.name +'</td>' ,'<td>'+ (file.size/1014).toFixed(1) +'kb</td>' ,'<td>等待上传</td>' ,'<td>' ,'<button class="layui-btn layui-btn-mini demo-reload layui-hide">重传</button>' ,'<button class="layui-btn layui-btn-mini layui-btn-danger demo-delete">删除</button>' ,'</td>' ,'</tr>'].join('')); //单个重传 tr.find('.demo-reload').on('click', function(){ obj.upload(index, file); }); //删除 tr.find('.demo-delete').on('click', function(){ delete files[index]; //删除对应的文件 tr.remove(); uploadListIns.config.elem.next()[0].value = ''; //清空 input file 值，以免删除后出现同名文件不可选 }); demoListView.append(tr); }); } ,done: function(res, index, upload){ if(res.code == 0) //上传成功 var tr = demoListView.find('tr#upload-'+ index) ,tds = tr.children(); tds.eq(2).html('<span style="color: #5FB878">上传成功</span>'); tds.eq(3).html(''); //清空操作 return delete this.files[index]; //删除文件队列已经上传成功的文件 } //code为后台传回来的数据，具体多少自己定， //后台只能传回json格式数据，不然会走error函数； ,error: function(index, upload){ } }) }); 

 public String uploadNoticeFile(MultipartFile fileList) { try{ String pathname = filepath; String timeMillis = Long.toString(System.currentTimeMillis());//时间戳 String filename = timeMillis + fileList.getOriginalFilename(); File dir = new File(pathname); if (!dir.exists()) { dir.mkdirs(); } String filepath = pathname + filename; File serverFile = new File(filepath); fileList.transferTo(serverFile); //存入数据库 NoticeFile noticeFile = new NoticeFile(); noticeFile.setNoFileName(filename); noticeFile.setNoFilePath(filepath); noticeFile.setNoId(0L); noticeFileRepository.save(noticeFile); return "1"; }catch (Exception e) { e.printStackTrace(); return "0"; } } 

 @RequestMapping(value = "/upload", method = RequestMethod.POST) @ResponseBody public Map noticeFile(@RequestParam(name = "file") MultipartFile files) { String msg = noticeFileService.uploadNoticeFile(files); Map map = new HashMap(); if (msg == "1") { map.put("code", "0"); } else { map.put("code", "1"); } return map; }