ByteData imageData = await rootBundle.load('assets/images/image.jpg'); Uint8List bytes = imageData.buffer.asUint8List(); 将图像字节转换为Base64字符串: 代码语言:txt 复制 String base64Image = base64Encode(bytes); 这样,你就可以
/// <param name="base64String"></param> /// <returns></returns> publicImage Base64ToImage(stringbase64String) { // Convert Base64 String to byte[] byte[] imageBytes = Convert.FromBase64String(base64String); MemoryStream ms =newMemoryStream(imageBytes, 0, imageBytes.Length); // Conv...
stream.Close();stringbase64String =string.Empty;try{ base64String= System.Convert.ToBase64String(data,0, data.Length); }catch{throw; } StreamWriter outFile;try{ outFile=newStreamWriter(string.Concat(imagePath,".txt"),false, Encoding.ASCII); outFile.Write(base64String); outFile.Close();retur...
string base64String = Convert.ToBase64String(imageBytes); return base64String; } } public static Image Base64ToImage(string base64String) { // Convert Base64 String to byte[] byte[] imageBytes = Convert.FromBase64String(base64String); MemoryStream ms = new MemoryStream(imageBytes, 0, im...
Base64String转Image publicvoidBase64StringToImage(stringstrbase64) { try { byte[]arr=Convert.FromBase64String(strbase64); MemoryStreamms=newMemoryStream(arr); System.Drawing.Imageimg=System.Drawing.Image.FromStream(ms); img.Save($"C://Users//123//Desktop//图片//129.jpg",System.Drawing.Im...
, and the decoder rejects any characters outside of this set. 4. convert base64 string to image file now we have a base64 string , let’s decode it back to binary content and write to a new file: byte[] decodedbytes = base64.getdecoder().decode(encodedstring); fileutils.writebyte...
如果是将 图片路径 转为 base64 字符串,可以先将 路径中的图片 转为 byte[] 形式,然后转为 base64 格式的字符串即可,参考如下代码: publicstaticstringImageToBase64(string_imagePath) { string_base64String =null; using(System.Drawing.Image _image = System.Drawing.Image.FromFile(_imagePath)) ...
{StringimageString=null;try{ByteArrayOutputStreambaos=newByteArrayOutputStream();// 将BufferedImage写入ByteArrayOutputStreamImageIO.write(image,"png",baos);byte[]bytes=baos.toByteArray();// 使用Base64编码imageString=Base64.getEncoder().encodeToString(bytes);}catch(IOExceptione){e.printStackTrace()...
WebP、BMP 和 WBMP 格式。Flutter Image 本身也实现了内存缓存的机制，可以很大的提高图片展示速度等。
//Now use image to create into NSData formatlet imageData:NSData = NSData.init(contentsOfURL: url)!SWIFT 2.0>编码let strBase64:String = imageData.base64EncodedStringWithOptions(.Encoding64CharacterLineLength)SWIFT 2.0>...