{
  "widgettype": "ChartBar",
  "options": {
    "data": {
      "labels": ["一月", "二月", "三月", "四月"],
      "datasets": [
        {
          "label": "销售额",
          "data": [12, 19, 3, 5]
        }
      ]
    },
    "width": "400px",
    "height": "300px"
  }
}