layui多文件上传

傷城~ 2022-05-14 05:28 373阅读 0赞

效果图：  
![这里写图片描述][70]  
页面的编写（注意：引入layui相关的css）：

<body class="childrenBody">
    <div class="layui-upload">
       <button type="button" class=" layui-btn layui-btn-normal" id="choiceList"><i class="iconfont icon-e645"></i>选择多文件</button>
       <div class="layui-upload-list layui-upList-minHeight">
          <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">
                    <tr id="upload"><td>xxx.txt</td><td>xxxkb</td><td>等待上传</td><td><button class="layui-btn layui-btn-xs demo-reload layui-hide">重传</button><button class="layui-btn layui-btn-xs layui-btn-danger demo-delete" disabled>删除</button></td></tr>
                </tbody>
          </table>
       </div>
        <div class="layui-form-item layui-btn-Center">
            <div class="layui-input-block">
                <button type="button" class="layui-btn layui-btn-normal" id="choiceListAction">开始上传</button>
                <button class="btn layui-btn layui-btn-primary js_close" id="quXiao" type="button">取消</button>
            </div>
        </div>
    </div>

js的编写（引入layui相关的js）：

$(function(){ 
        var uploadFile={
            init:function () { 
                   this.upload();
               },
          //上传文件
          upload:function(){ 
                   layui.use('upload', function(){ 
                       var $ = layui.jquery,
                           upload = layui.upload;
                       //多文件列表示例
                       var demoListView = $('#demoList'),
                           uploadListIns = upload.render({
                           elem: '#choiceList',
                           url: '/file/uploadFile',
                           accept: 'file',
                           multiple: true,
                           auto: false,
                           bindAction: '#choiceListAction',
                           choose: function(obj){ 
                               var files = this.files = obj.pushFile(); //将每次选择的文件追加到文件队列
                               //读取本地文件
                               obj.preview(function(index, file, result){ 
                                   if($('#demoList tr td').eq(0).text()=='xxx.txt'){
                                       $('#demoList').empty();
                                   }
                                   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-xs demo-reload layui-hide">重传</button>',
                                       '<button class="layui-btn layui-btn-xs 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
    
    
                               }
                               this.error(index, upload,res.msg);
                           },
                           error: function(index, upload,msg){ 
                               var tr = demoListView.find('tr#upload-'+ index)
                                   ,tds = tr.children();
                               tds.eq(2).html('<span style="color: #FF5722;">'+msg+'</span>');
                               tds.eq(3).find('.demo-reload').removeClass('layui-hide'); //显示重传
                           }
                       });
                   });
          }
    
       }
           uploadFile.init();
    })

Java后台的编写（layui的多文件上传其实是一个文件文件的上传）：

@RequestMapping("/uploadFile")
    @ResponseBody
    public JSONObject uploadFile(@RequestParam("file") MultipartFile file){
        JSONObject json = new JSONObject();
        Boolean flag=false;
        Map<String,Object> param=new HashMap<>();
        if(file.isEmpty()){
            json.put("msg","文件不能为空");
            json.put("code", Const.STATUS_FAIL);
          return json;
        }
    
        try{
            String path = “换成自己要保存的地址”;
            File dest = new File(path+fileName);
           if(!dest.getParentFile().exists()){ //判断文件父目录是否存在
                       dest.getParentFile().mkdir();
                   }
            file.transferTo(dest);
            json.put("msg","上传成功");
            json.put("code", Const.STATUS_SUCCESS);
        }catch(Exception e){
            e.printStackTrace();
            json.put("msg","上传失败,请重新上传");
            json.put("code", Const.STATUS_FAIL);
        }
    
        return json;
    }

[70]: /images/20220514/ff03533d8c8c4d2496b9eb906742dbf3.png