vue+el-upload实现多文件动态上传

<div class="vue-box">
           <div class="title-line">
                            其他必须持有的证照<el-button type="primary" size="mini" style="height: 20px;padding-top: 3px !important;margin-left: 50px" icon="el-icon-plus" @click="handleAddDetails">添加行</el-button>
                            <el-button type="primary" size="mini" style="height: 20px;padding-top: 3px !important;margin-left: 50px" icon="el-icon-plus" @click="doFileUpload()">上传</el-button>
            </div>
            <el-table
                    :row-class-name="rowClassNameDeal"
                    :data="tableData"
                    style="width: 100%;">
                <el-table-column
                        prop="id"
                        width="50"
                        label="序号">
                </el-table-column>
                <el-table-column
                        prop="cardName"
                        width="180"
                        label="证照名称">
                    <!--<template slot-scope="scope">
                        <el-input size="mini" v-model="tableData[scope.row.id-1].cardName"></el-input>
                    </template>-->
                </el-table-column>
                <el-table-column
                        prop="cardNo"
                        width="180"
                        label="证件号码">
                    <!--<template slot-scope="scope">
                        <el-input size="mini" v-model="tableData[scope.row.id-1].cardNo"></el-input>
                    </template>-->
                </el-table-column>
                <el-table-column
                        prop="startDate"
                        width="180"
                        label="起始日期">
                    <!--<template slot-scope="scope">
                        <el-date-picker
                                v-model="tableData[scope.row.id-1].startDate"
                                style="width: 80%;"
                                size="mini"
                                value-format="yyyy-MM-dd"
                                type="date"
                                placeholder="选择日期">
                        </el-date-picker>
                    </template>-->
                </el-table-column>
                <el-table-column
                        prop="endDate"
                        width="180"
                        label="结束日期">
                    <!--<template slot-scope="scope">
                        <el-date-picker
                                v-model="tableData[scope.row.id-1].endDate"
                                style="width: 80%;"
                                size="mini"
                                value-format="yyyy-MM-dd"
                                type="date"
                                placeholder="选择日期">
                        </el-date-picker>
                    </template>-->
                </el-table-column>
                <el-table-column
                        prop="address"
                        label="附件">
                    <template slot-scope="scope">
                        <el-upload
                                :ref="scope.row.cardName"
                                :http-request="dynamicUpload"
                                :before-upload="beforeUploadFile(scope.row)"
                                :on-remove="uploadRemove"
                                :before-remove="uploadBeforeRemove"
                                :on-preview="uploadPreview"
                                name="upload"
                                :limit="1"
                                :data="scope.row.cardName"
                                :on-exceed="uploadHandleExceed"
                                :file-list="tableData[scope.row.id-1].fileUploadedList">
                            <el-button  size="mini" type="info">点击上传</el-button>
                        </el-upload>
                    </template>
                </el-table-column>
                <el-table-column
                        prop="date"
                        width="80"
                        label="操作">
                    <template slot-scope="scope">
                        <el-button size="mini" type="warning" @click="handleDeleteDetails(scope.row)">删除</el-button>
                    </template>
                </el-table-column>
            </el-table>
            
            <el-dialog title="证照信息" :visible.sync="addCardVisible" width="40%">
                <el-form :model="fileInfo">
                    <el-form-item label="证照名称" :label-width="labelWidth">
                        <el-input v-model="fileInfo.cardName" autocomplete="off" style="width: 100%;"></el-input>
                    </el-form-item>
                    <el-form-item label="证件号码" :label-width="labelWidth">
                        <el-input v-model="fileInfo.cardNo" autocomplete="off" style="width: 100%;"></el-input>
                    </el-form-item>
                    <el-form-item label="生效日期" :label-width="labelWidth">
                        <el-date-picker type="date" placeholder="生效日期" value-format="yyyy-MM-dd" v-model="fileInfo.startDate" style="width: 100%;"></el-date-picker>
                    </el-form-item>
                    <el-form-item label="失效日期" :label-width="labelWidth">
                        <el-date-picker type="date" placeholder="失效日期" value-format="yyyy-MM-dd" v-model="fileInfo.endDate" style="width: 100%;"></el-date-picker>
                    </el-form-item>
                </el-form>
                <div slot="footer" class="dialog-footer">
                    <el-button @click="addCardVisible = false">取 消</el-button>
                    <el-button type="primary" @click="addFileDetail">确 定</el-button>
                </div>
            </el-dialog>
</div>

let nodeVue = new Vue({
    el: '.vue-box',
    data: {
        labelWidth: '150px',
        tableData: [],
        uploadParams:{
            fileTagName: ''
        },
        totalFileList:[],
        totalFileNameList:[],
        addCardVisible:false,
        fileInfo:{
            cardName:'',
            cardNo:'',
            startDate:'',
            endDate:''
        }
    },
    methods:{
        // 文件相关
        uploadRemove:function(file) {
            let that = this;
            // 删除文件列表中的文件
            for(let i=0;i<that.totalFileNameList.length;i++){
                if(that.totalFileNameList[i].fileName === file.name){
                    that.totalFileNameList.splice(i,1)
                }
            }
            for(let i=0;i<that.totalFileList.length;i++){
                if(that.totalFileList[i].name === file.name){
                    that.totalFileList.splice(i,1)
                }
            }
        },
        // 上传文件参数设置
        beforeUploadFile:function(row) {
            console.log(row.cardName);
            this.uploadParams.fileTagName=row.cardName
            this.uploadParams.fid=row.id
        },
        // 下载文件,点击文件列表中的文件下载
        uploadPreview:function(file){
            console.log(file);
        },
        uploadHandleExceed:function(files, fileList) {
            this.$message.warning(`当前限制选择 1 个文件`);
        },
        uploadBeforeRemove:function(file) {
            return this.$confirm(`确定移除 ${ file.name }？`);
        },
        // 附件添加行,打开添加行弹框
        handleAddDetails(){
            let that = this;
            that.addCardVisible = true;
            that.fileInfo.cardName = '';
            that.fileInfo.cardNo = '';
            that.fileInfo.startDate = '';
            that.fileInfo.endDate = '';
        },
        // 向表格数据中添加一行
        addFileDetail(){
            let that = this;
            if (that.tableData == undefined) {
                that.tableData = new Array();
            }
            let obj = {};
            obj.id = 0;
            obj.cardName = that.fileInfo.cardName;
            obj.cardNo = that.fileInfo.cardNo;
            obj.startDate = that.fileInfo.startDate;
            obj.endDate = that.fileInfo.endDate;
            obj.fileUploadedList=[];
            that.tableData.push(obj);
            that.addCardVisible = false;
        },
        // 删除行
        handleDeleteDetails(row){
            let that = this;
            that.tableData.splice(row.id-1, 1);
            //同时 删除文件列表及关联列表中的数据
            let tmpFileName = '';
            for(let i=0;i<that.totalFileNameList.length;i++){
                if(that.totalFileNameList[i].cardName === row.cardName){
                    tmpFileName = that.totalFileNameList[i].fileName;// 先暂存再执行删除操作
                    that.totalFileNameList.splice(i,1);
                }
            }
            for(let i=0;i<that.totalFileList.length;i++){
                if(that.totalFileList[i].name === tmpFileName){
                    that.totalFileList.splice(i,1)
                }
            }
        },
        rowClassNameDeal({row, rowIndex}) { 
            //把每一行的索引放进row.id,此方法用于生成表格中的序号，当在表格中填写内容时，每一行都需要绑定不同的v-model
            row.id = rowIndex+1;
        },
        // 自定义上传，只将文件暂存在前端
        dynamicUpload(content){
            let that = this;
            if(content.data.length === 0){
                that.$message.warning(`请填写证照名称！！！`);
                that.$refs[content.data].clearFiles();
                return false;
            }
            for(let i=0;i<that.totalFileNameList.length;i++){
                if(that.totalFileNameList[i].fileName === content.file.name){
                    that.$message.warning('改文件已上传，请重新选择文件上传！！！');
                    that.$refs[content.data].clearFiles();
                    return false;
                }
            }
            // 将文件加入到待传输的文件列表
            that.totalFileList.push(content.file)
            let fileNameData = {
                cardName: content.data,
                fileName: content.file.name
            }
            // totalFileNameList 存储文件和表格内容的关联关系，这里只关联了证照名称
            that.totalFileNameList.push(fileNameData)
        },
        // 执行上传操作将文件和表格信息一起发送到后台
        doFileUpload(){
            let that = this;
            if(that.totalFileList.length === 0){
                that.$message.warning("请上传文件！！！");
                return;
            }
            // 上传文件需要用FormData，processData和contentType 两个参数必须设置，否则上传不成功
            const params = new FormData();
            // 为上传的每个文件命名，方便后台获取时与表格数据关联
            for (let i = 0; i < that.totalFileList.length; i++) {
                params.append(that.totalFileList[i].name, that.totalFileList[i]);
            }
            params.append("fileNameList", JSON.stringify(that.totalFileNameList));
            $.ajax({
                url:baseurl+"/testupload/fileUpload",
                type:"POST",
                dataType: "json",
                processData: false, //用于对data参数进行序列化处理 这里必须false
                contentType: false, //必须
                data:params,
                success:function(res){
                    that.$message.warning('上传成功');
                }
            });
        }
    },
    created: function(){       
    }
})

@Controller
@RequestMapping("/testupload")
public class RegisterController {

 // 附件从 request中获取
    @RequestMapping("/fileUpload")
    @ResponseBody
    public ServerResponse fileupload(HttpServletRequest request,String fileNameList){
        try{
            if(fileNameList == null){
                throw new Exception("请选择文件后上传！！！");
            }
            // 1. 上传的位置
            String path = "E:\\uploadfile";
            //判断该路径是否存在
            File file = new File(path);
            if (!file.exists()) {
                file.mkdirs();
            }
            // 处理以字符串形式上传的关联数据信息
            JSONArray jsonArray = JSON.parseArray(fileNameList);
            // 遍历关联列表
            for(Object object : jsonArray){
                JSONObject jsonObject = JSON.parseObject(object.toString());
                System.out.println(jsonObject.getString("cardName"));
                // 获取文件
                MultipartFile file1 = ((MultipartHttpServletRequest) request).getFile(jsonObject.getString("fileName"));
                // 获取文件信息
                String filename = file1.getOriginalFilename();
                System.out.println(filename);
                // 保存文件
                file1.transferTo(new File(path, filename));
            }
        }catch (Exception e) {
            log.error(e.getMessage());
            return ServerResponse.createByErrorMessage(e.getMessage());
        }
        return ServerResponse.createBySuccess();
    }
}