javascript JS - 编码解码Base64

Posted 2021-05-03

//ENCODE
// read binary data
// this on server
const bitmap = fs.readFileSync(file);
// convert binary data to base64 encoded string
const attachmentBase64 = new Buffer(bitmap).toString('base64');

//DECODE
// this on client
const base64str = result;
const bitmap0 = new Buffer(base64str, 'base64');

handleAttachment(){

  const base64str = this.props.attachment;
  const bitmap0 = new Buffer(base64str, 'base64');
  const attachment = [];
  
  attachment.push(
      <img src={`data:image/png;base64,${base64str}`}/>
  );
  return attachment;

}