React 文件上传 文件下载

感觉今天有些不熟悉的技术栈做起来要整死人

做个React的文件上传差点把人搞死了

 <div className="Plan-files-box">
              <span style={{ marginRight: "5px", verticalAlignChange: 'top' }}> 预览文件 </span>
              <Upload
                accept='.doc,.docx,application/msword,application/vnd.openxmlformats-officedocument.wordprocessingml.document'
                beforeUpload={this.avatarBeforeUpload}
                multiple={true}
                customRequest={this.customRequest}
                className='upload-list-inline'
                onRemove={this.onRemoveFile}
                fileList={this.state.newFileList}
                onDownload={this.onDownloadFile}
              >
                <Button className='btn-add-import'>
                  <svg aria-hidden="true" className="example">
                    <use xlinkHref="#icondaoru" />
                  </svg>导入文件
                </Button>
              </Upload>
              <Button className="Download-entire" onClick={this.onDownloadFileAll}>下载全部</Button>
              <p className="size-title">支持文件格式: .doc、.docx、.pdf,单个文件不能超过2MB</p>
            </div>

  avatarBeforeUpload = (file) => {
    let fileName = file.name.split('.');
    const fileType = fileName.slice(-1)[0];

    const isJPG = (fileType === 'doc') || (fileType === 'docx') || (fileType === 'pdf');
    if (!isJPG) {
      message.error('仅支持文件格式：.doc、.docx、.pdf格式附件!')
    }

    const isLt1M = file.size / 1024 / 1024 < 2;
    if (!isLt1M) {
      message.error('附件大小不能超过2MB!');
    }
    return isJPG && isLt1M;
  };

// 可以自定义自己的上传实现
  customRequest = (file) => {
    this.setState({
      loadingUplaod: true
    })
    let form = new FormData()
    form.append('file', file.file)
    axios.post(BaseURL + "/data/emergencyPlan/uploadFile", form)
      .then((response) => {
        if (response.status === 200) {
          let fileData = file.file
          let newFile = {
            ...fileData,
            url: response.data.data.split("=")[0],
            completeUrl: response.data.data,
            name: response.data.data.split("=")[1]
          }

          this.setState({
            loadingUplaod: false,
            newFileList: [...this.state.newFileList, newFile],
            downloadList: [...this.state.downloadList, {
              name: response.data.data.split("=")[1],
              url: response.data.data.split("=")[0]
            }]
          })
        }
      })
      .catch(function (error) {
        console.log(error);
      });
  }

// 文件删除
  onRemoveFile = (file) => {
    const resFile = file.url ? file.url : ""
    return axios({
      url: BaseURL + "/data/emergencyPlan/delFile",
      method: "DELETE",
      params: {
        urlStr: resFile
      }
    }).then((res) => {
      const { code, msg } = res.data
      let list = this.state.newFileList.filter(item => item.url !== file.url)
      if (code === 100) {
        this.setState({
          newFileList: list
        })
        message.success(msg || '删除成功')
      } else {
        message.error(msg || '删除失败')
      }
    })
  }


// 上传之前的方法
  avatarBeforeUpload = (file) => {
    let fileName = file.name.split('.');
    const fileType = fileName.slice(-1)[0];

    const isJPG = (fileType === 'doc') || (fileType === 'docx') || (fileType === 'pdf');
    if (!isJPG) {
      message.error('仅支持文件格式：.doc、.docx、.pdf格式附件!')
    }

    const isLt1M = file.size / 1024 / 1024 < 2;
    if (!isLt1M) {
      message.error('附件大小不能超过2MB!');
    }
    return isJPG && isLt1M;
  };

// 下载全部文件
  onDownloadFileAll = () => {
    const { newFileList } = this.state;
    let timeUp = 0;
    for (let i = 0; i < newFileList.length; i++) {
      timeUp += i;
      const name = newFileList[i].name
      const url = newFileList[i].url
      setTimeout(() => {
        this.download(name, url)
      }, timeUp * 100);
    }
  }

实际截图: