javascript - Base64 图像数据不适用于 fabricjs 中的 loadfromJSON

Question

我正在尝试加载一个包含图像对象的 json 对象。图像对象以 base 64 图像数据作为背景。但是我无法加载 loadFromJSON 方法。

代码:

var jsonDataSet = '{"objects":[{"type":"image","originX":"left","originY":"top","left":0,"top":0,"width":700,"height":600,"fill":"rgb(0,0,0)","overlayFill":null,"stroke":null,"strokeWidth":1,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1,"scaleY":1,"angle":0,"flipX":false,"flipY":false,"opacity":1,"selectable":false,"hasControls":true,"hasBorders":true,"hasRotatingPoint":true,"transparentCorners":true,"perPixelTargetFind":false,"shadow":null,"visible":true,"clipTo":null,"src":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAn4AAAFPCAYAAADTHsP1AAAgAElEQ…Lv/vuU1wVsyvXK+Kks1f6gffSCThZ1km3u6NFklCnFes//AbZzi+iGF3/7AAAAAElFTkSuQmCC","filters":[]}],"background":""}';

canvas.loadFromJSON (jsonDataSet);

canvas.renderAll();

它显示错误为 "Error loading data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAn4AAAFPCAYAAADTHsP1AAAgAElEQ…Lv/vuU1wVsyvXK+Kks1f6gffSCThZ1km3u6NFklCnFes//AbZzi+iGF3/7AAAAAElFTkSuQmCC "

Answer 1

如果您使用最新的 fabric.js 版本，这是一个错误。我已经通过拉取请求 #800 解决了这个问题:https://github.com/kangax/fabric.js/pull/800 .

顺便说一句，你上面代码的 base64 dataURL 不正确——它有三个点 (lEQ…Lv/vuU)。可能是复制的副作用。