pc-component-v5/packages/common/DownloadService.js

import Common from './Common.js';
import Notify from './Notify.js';
/**
 * 报表下载服务
 */
export default {


  /**
	 * GET 方式下载文件
	 * @param {*} url 
	 * @param {*} fileName 
	 */
  downloadFile: function (url, fileName) {
    fetch(url, {
      method: 'GET',
      headers: {
        'token': localStorage.getItem('#token'),
      },
    })
      .then(res => res.blob())
      .then(data => {
        const blobUrl = window.URL.createObjectURL(data);

        var a = document.createElement('a');
        a.download = fileName;
        a.href = blobUrl;
        $('body').append(a); // 修复firefox中无法触发click
        a.click();
        $(a).remove();
      }).catch(err => {
        Notify.error(err.code, err.responseText, true);
      });
  },


  /**
	 * 报表下载
	 * @param {Object} fileName
	 * @author GuoZhiBo 20200410
	 */
  reportDownload: function (fileName) {
    var downloadUrl = Common.getApiURL('file/reportDownload') + '?fileName=' + window.encodeURIComponent(fileName);
    this.downloadFile(downloadUrl, fileName);
  },

  /**
	 * 文件下载
	 * @param {Object} className 类名称
	 * @param {Object} fileName 文件名称
	 * @author GuoZhiBo 20211008
	 */
  fileDownload:function(className, fileName){
    var downloadUrl = Common.getApiURL('file/fileDownload') + '?className=' + className
        + '&fileName=' + window.encodeURIComponent(fileName);
    this.downloadFile(downloadUrl, fileName);
  },

  /**
	 * POST 方式下载文件
	 * @param {http请求的地址} url 
	 * @param {post请求需要的参数} params 
	 */
  postDownloadFile: function (url, params) {
    var form = document.createElement('form');
    form.style.display = 'none';
    form.action = url;
    form.method = 'post';
    document.body.appendChild(form);
    // 动态创建input并给value赋值
    for (var key in params) {
      var input = document.createElement('input');
      input.type = 'hidden';
      input.name = key;
      input.value = params[key];
      form.appendChild(input);
    }
    form.submit();
    form.remove();
  },
};