上传压缩图片（案例：oss）

export const uploadFile = async (params: {
  file: any;
  isLong: boolean;
  name?: string;
  filderName?: string;
  formState?: any;
  isRelative?: boolean;
}) => {
  // info, type, formState, filderName,
  return new Promise(async (resolve, reject) => {
    try {
      const { file } = params.file;
      console.log(file, 'refiles');
      const resFile = await compressorImage(file);
      // console.log('res>>>>>', resFile);
      const data = await getCommonUploadImage(params.isLong);
      const signData = JSON.parse(JSON.stringify(data?.resultData));
      const curFilename = file.name;
      const { accessKeyId, bucketName, accessKeySecret, securityToken, fileName, fileUrl } =
        signData;
      const client = new OSS({
        // 上传地址前缀
        bucket: bucketName,
        region: 'oss-cn-qingdao',
        accessKeyId: accessKeyId,
        accessKeySecret: accessKeySecret,
        stsToken: securityToken,
      });
      // const timesStr = +new Date();
      // 图片存贮位置
      const storeAs = `${fileName}/${params.filderName}/${curFilename}`;
      const headers = {
        'Content-Type': 'image/jpg',
      };
      // 可预览图片完整地址：`${signData.fileUrl}/${storeAs}`
      console.log('res压缩后img>>>>>', resFile);
      client.put(storeAs, resFile, headers).then((res: any) => {
        console.log(res, 'res');
        resolve(params.isRelative ? res.name : `${fileUrl}/${res.name}`);
      });
      params.file.onSuccess({}, file);
    } catch (e: any) {
      // 全局打印报错
      reject(e?.message);
      createMessage.error(e?.message);
    }
  });
};

// 压缩文件
async function compressorImage(image: File) {
  const file = image;
  const maxSize = 1024 * 1024 * 6;
  return new Promise((resolve) => {
    compressImage(file, maxSize, 0.9, (comFile) => {
      resolve(comFile);
    });
  });
}


/**
 * @param image 图片
 * @param maxSize 图片大小限制
 * @param quality 图片压缩比 0-1,数字越小，图片压缩越小
 * @param callback 获取压缩后的图片
 * @returns
 */
function compressImage(curFile, maxSize, quality, callback) {
  const reader = new FileReader();

  reader.onload = function (event) {
    const img: any = new Image();
    img.src = event.target?.result;

    img.onload = function () {
      const canvas = document.createElement('canvas');
      const ctx = canvas.getContext('2d');

      const width = img.width;
      const height = img.height;
      canvas.width = width;
      canvas.height = height;

      ctx?.drawImage(img, 0, 0, width, height);

      canvas.toBlob(
        function (blob: any) {
          const file = new window.File([blob], curFile.name, { type: blob.type });
          if (curFile?.size > maxSize) {
            if (quality > 0.1) {
              compressImage(file, maxSize, quality - 0.1, callback);
            } else {
              // 实在压不动了
              callback(file);
            }
          } else {
            callback(file);
          }
        },
        'image/jpeg',
        quality,
      );
    };
  };

  reader.readAsDataURL(curFile);
}