整体逻辑如下：

element-upload上传图片压缩包 → 解压缩压缩包 → 获取压缩包的图片文件 → 将内存过大的图片进行压缩 → 将压缩之后的图片再次制作成压缩包 → 继续上传操作

先安装image-conversion， jszip模块，用于压缩和解压缩

upload部分

 <el-upload
            class="upload-demo"
            ref="uploadNoMask"
            :action="uploadUrl()"
            :limit="1"
            :show-file-list="true"
            :before-upload="beforeAvatarUpload"
            :on-success="handleSuccess"
            :on-remove="handleRemove"
            accept=".zip"
            >
            <div class="t_l">
              <el-button size="small" type="primary">上传压缩包</el-button> 
            </div>
          </el-upload>

引入模块

import * as imageConvsersion from 'image-conversion'
import JsZip from 'jszip'

beforeAvatarUpload方法

 beforeAvatarUpload(file) {
      const _this = this;
      let zip = new JsZip(); //上传的压缩包
      let nZip = new JsZip(); //新的压缩包
      return new Promise((resolve) => {
          let promise = [];
          zip.loadAsync(file).then(res => {
            res.forEach((relativePath, fil) => {
              if(!fil.dir) {
                let pro = _this.getBlob(zip,fil).then(data => {
                  nZip.file(fil.name, data, {binary: true});
                }).catch(err => {

                });
                promise.push(pro);
              }
            });
            Promise.all(promise).then(() => {
              nZip.generateAsync({type: "blob"}).then(content => {
                _this.$message.warning('正在压缩，请稍等~')
                resolve(content);
              })
            })
          })
        })
  },
  getBlob(zip, fil) {
      return new Promise((resolve, reject) => {
        zip.file(fil.name).async("uint8array").then(u8 => {
          let blob = new File([u8], fil.name.split("/")[1]);
          if(blob.size > 409600) {
            imageConvsersion.compressAccurately(blob, {
              size: 400,
              width: 400
            }).then(res => {
              resolve(res);
            })
          }else {
             resolve(res);
          }
        })
      })
    },

功能完成。