base64转file

export  function base64toFile (dataurl, filename) {let arr = dataurl.split(',')let mime = arr[0].match(/:(.*?);/)[1]let suffix = mime.split('/')[1]let bstr = atob(arr[1])let n = bstr.lengthlet u8arr = new Uint8Array(n)while (n--) {u8arr[n] = bstr.charCodeAt(n)}return new File([u8arr], `${filename}.${suffix}`, {type: mime})
}

file，Blob转base64

export const getBase64 = (img:any, callback: (url: string) => void) => {const reader = new FileReader();reader.addEventListener('load', () => callback(reader.result as string));reader.readAsDataURL(img as Blob);
};getBase64(img, (url) => { //第一个参数是通过上传，得到的file文件 如（file.originFileObj）console.log(url，'生成的base64')
});

记录请求file文件通过二进制流得到云图片

//需要将file转为formData 格式
export const formData = (data: any) => {const formData = new FormData()const entries = Object.entries(data)entries.forEach((item) => {if (item[1] && item[1] instanceof File) {formData.append(item[0], item[1])} else {// 当值为对象或数组的时候，把值字符串化const value =isObject(item[1]) || Array.isArray(item[1]) ? JSON.stringify(item[1]) : item[1]formData.append(item[0], value as string | Blob)}})return formData
}return request('/image_translate/image_to_url', {method: 'POST',data: formData({file: url}),//url为file，通过upload上传的就是 file.originFileObjheaders: {'Content-Type':'multipart/form-data; boundary=----WebKitFormBoundarynl6gT1BKdPWIejNq',},});

记录前端获取oss图片转为base64

export async function getBlobTransitionBase64(url) {return request(url, {method: 'GET',headers: {'Cache-Control': 'no-cache',},responseType: 'blob',});
}