1.id="up-img-touch" 是触发弹出框的焦点
<div class="up-img-cover" id="up-img-touch" >
<img class="am-circle" alt="点击图片上传" src="img/hu.jpg" data-am-popover="{content: '点击上传', trigger: 'hover focus'}" >
</div>
2.url="/admin/user/upload.action" 提交给服务器的事件
<span class="am-icon-check" id="up-btn-ok" url="/admin/user/upload.action"></span>
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