前端采用layui框架,讲解多文件上传的完整实现功能。
前端html重点代码如下:
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<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> |
相应的,js代码如下所示:
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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: '#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){ } }) }); |
以上即是前端功能的实现,后端方面,在service层impl下创建文件上传的函数:
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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" ; } } |
noticefile是我个人在写项目时创建的类,读者可根据实际情况自行运用。
然后,在controller层中创建相应的函数:
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@requestmapping (value = "/upload" , method = requestmethod.post) @responsebody public map<string, object> 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; } |
以上,即实现了多文件上传的全部功能。
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/weixin_42259631/article/details/80999415