img的src不连接本地地址实现输出一个图片（使用base64）

<img alt="100%x180" data-src="holder.js/100%x180" style="height: 180px; 100%; display: block;" src="data:image/svg+xml;base64,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" data-holder-rendered="true">

转换工具：http://tool.oschina.net/encrypt?type=4   直接使用装换出来的img即可