<!DOCTYPE html>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="https://cdn.bootcss.com/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<form class="form-inline" action="">
<div class="container">
<div class="row">
<div class="form-group">
<div class="col-sm-4 control-label">选择文件</div>
<div class="col-sm-8">
<div class="input-group">
<input id='location' class="form-control" onclick="$('#i-file').click();">
<label class="input-group-btn">
<input type="button" id="i-check" value="浏览文件" class="btn btn-primary"
onclick="$('#i-file').click();">
</label>
</div>
</div>
<input type="file" name="file" id='i-file' accept=".xls, .xlsx"
onchange="$('#location').val($('#i-file').val());" style="display: none">
</div>
</div>
</div>
</form>
</body>
<script type="text/javascript" src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
<script type="text/javascript" src="https://cdn.bootcss.com/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</html>
原文：https://www.cnblogs.com/zhenzi0322/p/12073385.html