验证码

图片验证码

后台 ArrayBuffer 转 Base64

transformArrayBufferToBase64(buffer) {
  return (
    "data:image/png;base64," +
    btoa(
      new Uint8Array(buffer).reduce(
        (data, byte) => data + String.fromCharCode(byte),
        ""
      )
    )
  );
}
// 后台api接口
getGraphical({ randomStr: Math.random().toString().slice(-6) }).then((res) => {
  this.transformArrayBufferToBase64(res.data)
});

/**
 * 获取图形验证码接口
 */
export function getGraphical(data) {
  return axios({
    url: `${PREFIX}/sms/getPicValidateCode`,
    method: 'POST',
    responseType: 'arraybuffer',
    data,
  });
}