Oss 对象服务存储前端方法封装

/** * @description 获取文件数据流 * @author easten * @date 2020-07-16 * @export * @param {*} files 文件列表 * @returns 文件数据流对象 */export function getFileStream(files) {  return new Promise(resolve => {    if (files.length > 0) {      let data = [];      files.forEach(item => {        ossRepository          .download(getFileUrl(item.url), p => {})          .then(res => {            data.push({              name: `${item.name}${item.type}`,              blob: res,            });            if (data.length == files.length) {              resolve(data);            }          });      });    }  });}

export function fileDownload(files) {  if (files instanceof Array) {    // 多文件打包下载    getFileStream(files).then(datas => {      // 拼装压缩包格式      if (datas.length > 0) {        SaveMultipleFile(`附件.zip`, datas).then(() => {          console.log('下载成功');        });      }    });  } else {    // 单文件下载    ossRepository      .download(getFileUrl(files.url), progress => {})      .then(blob => {        SaveSingleFile(`${files.name}${files.type}`, files.size, blob).then(a => {          console.log('下载成功');        });      });  }}
/** * @description 批量下载 * @author easten * @date 2020-07-13 * @export * @param {*} zipName 压缩包名称 * @param {*} files 需要压缩的文件信息 */export function SaveMultipleFile(zipName, files) {  return new Promise((resolve,error) => {    // 首先定义一个文件夹    let zip=new jsZIP();    files.forEach(a=>{      zip.file(a.name,a.blob);    });    zip.generateAsync({type:"blob"})    .then(function(content) {        saveAs(content, zipName);        resolve();    }).catch(()=>{      error();    });  });}

export let resourceIcon = {  folder: 'folder-open',  xls: 'file-excel',  xlsx: 'file-excel',  md: 'file-markdown',  pdf: 'file-pdf',  ppt: 'file-ppt',  txt: 'file-text',  doc: 'file-word',  unknown: 'file-unknown',  zip: 'file-zip',  other: 'file',  jpg: 'file-image',};
// 创建文件格式对应表export const FileTypes = [  { k: 'audio/3gpp', v: '3gpp' },  { k: 'video/3gpp', v: '3gpp' },  { k: 'audio/ac3', v: 'ac3' },  { k: 'allpication/vnd.ms-asf', v: 'asf' },  { k: 'audio/basic', v: 'au' },  { k: 'text/css', v: 'css' },  { k: 'text/csv', v: 'csv' },  { k: 'application/msword ', v: 'dot' },  { k: 'application/xml-dtd', v: 'dtd' },  { k: 'image/vnd.dwg', v: 'dwg' },  { k: 'image/vnd.dxf', v: 'dxf' },  { k: 'image/gif', v: 'gif' },  { k: 'text/htm', v: 'htm' },  { k: 'text/html', v: 'html' },  { k: 'image/jp2', v: 'jp2' },  { k: 'image/jpeg', v: 'jpeg' },  { k: 'text/JavaScript', v: 'js' },  { k: 'application/JavaScript', v: 'js' },  { k: 'application/json', v: 'json' },  { k: 'audio/mpeg', v: 'mp2' },  { k: 'audio/mp4', v: 'mp4' },  { k: 'video/mpeg', v: 'mpeg' },  { k: 'application/vnd.ms-project', v: 'mpp' },  { k: 'application/ogg', v: 'ogg' },  { k: 'audio/ogg', v: 'ogg' },  { k: 'application/pdf', v: 'pdf' },  { k: 'image/png', v: 'png' },  { k: 'application/vnd.ms-powerpoint', v: 'ppt' },  { k: 'application/rtf', v: 'rtf' },  { k: 'text/rtf', v: 'rtf' },  { k: 'image/vnd.svf', v: 'svf' },  { k: 'image/tiff', v: 'tif' },  { k: 'text/plain', v: 'txt' },  { k: 'application/vnd.ms-works', v: 'wdb' },  { k: 'text/xml', v: 'xml' },  { k: 'application/xhtml+xml', v: 'xhtml' },  { k: 'application/xml', v: 'xml' },  { k: 'application/vnd.ms-excel', v: 'xls' },  { k: 'aplication/zip', v: 'zip' },  { k: 'pplication/vnd.openxmlformats-officedocument.spreadsheetml.sheet', v: 'xlsx' },];

/** * @description 文件大小转换 * @author easten * @date 2020-07-08 * @export * @param {*} fileSize * @returns kb GB  G */export function FileSizeTrans(fileSize) {  let size = '';  if (fileSize < 0.1 * 1024) {    //如果小于0.1KB转化成B    size = fileSize.toFixed(2) + 'B';  } else if (fileSize < 0.1 * 1024 * 1024) {    //如果小于0.1MB转化成KB    size = (fileSize / 1024).toFixed(2) + 'KB';  } else if (fileSize < 0.1 * 1024 * 1024 * 1024) {    //如果小于0.1GB转化成MB    size = (fileSize / (1024 * 1024)).toFixed(2) + 'MB';  } else {    //其他转化成GB    size = (fileSize / (1024 * 1024 * 1024)).toFixed(2) + 'GB';  }