小程序连接百度ai

function getTextFromImage(res) {
  var access_token = '24.c649256d2e*****0.282335-11449805';
  var url = 'https://aip.baidubce.com/rest/2.0/ocr/v1/general_basic?access_token=' + access_token;　//图片进行base64编码
  let arrayBuffer = upng.encode([res.data.buffer], res.width, res.height)
  var imageBase64 = wx.arrayBufferToBase64(arrayBuffer);
  console.log(imageBase64);
  wx.request({
    url: url,
    data: {
      'image': imageBase64
    },
    header: {
      'content-type': 'application/x-www-form-urlencoded'
    },
    method: 'POST',
    success: function (res) {
      if (res.data.error_code != null) {
        console.log(res.data.error_msg);
      } else {
        console.log("success" + res);
      }
    },
    fail: function (res) {
      console.log('fail' + res);
    },
    complete: function (res) {
      console.log('complete' + res);
    }
  });