如何从Cordova Camera Preview Plugin获取照片？

当我拍照时,我收到了一个错误.我不知道如何从这个URL读取图像.我想要那个图像的base64.

这是错误图像：

这是我的HTML

<div class="controls">
  <div class="block">
    <button id="startCameraButton">Start Camera at BACk</button>
    <button id="stopCameraButton">Stop Camera</button>
  </div>

  <div class="block">
    <p><button id="startCameraAnotherPosButton">Start Camera at front</button></p>

    <p>Color Effect:
    <SELEct id="colorEffectCombo">
      <option SELEcted value="none">None</option>
      <option value="aqua">Aqua</option>
      <option value="blackboard">Blackboard</option>
      <option value="mono">Mono</option>
      <option value="negative">Negative</option>
      <option value="posterize">Posterize</option>
      <option value="sepia">Sepia</option>
      <option value="solarize">Solarize</option>
      <option value="whiteboard">Whiteboard</option>
    </SELEct>
    </p>
  </div>
  <div class="block">
    <button id="takePictureButton">Take Picture</button>
    <button id="switchCameraButton">Switch Camera</button>
  </div>
  <div class="block">
    <button id="hideButton">Hide</button>
    <button id="showButton">Show</button>
  </div>
</div>
<div class="pictures">
  <p><img id="previewPicture" width="200"/></p>
  <p><img id="originalPicture" width="200"/></p>
</div>

这是我的app.js

var app = {
  startCamera: function(){
    console.log('starTing camera');
    // var tapEnabled = true; //enable tap take picture
    var dragEnabled = true; //enable preview Box drag across the screen
    // var toBACk = true; //send preview Box to the BACk of the webview
    var rect = {x: 100,y: 100,width: 300,height:300};
    cordova.plugins.camerapreview.startCamera(rect,"front",dragEnabled)
  },stopCamera: function(){
    cordova.plugins.camerapreview.stopCamera();
  },startCameraAnotherPos: function(){
    cordova.plugins.camerapreview.startCamera({x: 50,height:300,camera: "BACk",tapPhoto: true,previewDrag: true,toBACk: falsE});
  },takePicture: function(){
    console.log('taking picture..');
    cordova.plugins.camerapreview.takePicture({maxWidth: 640,maxHeight: 640});
  },takepicturehandler: function(){
    console.log('taking..');
  },switchCamera: function(){
    cordova.plugins.camerapreview.switchCamera();
  },show: function(){
    cordova.plugins.camerapreview.show();
  },hide: function(){
    cordova.plugins.camerapreview.hide();
  },colorEffectChanged: function(){
    var effect = document.getElementById('colorEffectCombo').value;
    cordova.plugins.camerapreview.setColorEffect(effect);
  },init: function(){
    document.getElementById('startCameraButton').addEventListener('click',this.startCamera,falsE);
    document.getElementById('startCameraAnotherPosButton').addEventListener('click',this.startCameraAnotherPos,falsE);

    document.getElementById('stopCameraButton').addEventListener('click',this.stopCamera,falsE);
    document.getElementById('takePictureButton').addEventListener('click',this.takePicture,falsE);
    document.getElementById('switchCameraButton').addEventListener('click',this.switchCamera,falsE);
    document.getElementById('showButton').addEventListener('click',this.show,falsE);
    document.getElementById('hideButton').addEventListener('click',this.hide,falsE);
    document.getElementById('colorEffectCombo').addEventListener('change',this.colorEffectChanged,falsE);

    cordova.plugins.camerapreview.setOnPictureTakenHandler(function(result){
      console.log(result);
      document.getElementById('originalPicture').src = result[0];//originalPicturePath;
      document.getElementById('previewPicture').src = result[1];//previewPicturePath;
  });

  }
};

document.addEventListener('deviceready',function(){  
  app.init();
},falsE);