<!DOCTYPE html> <html> <head> <title></title> <meta http-equiv="Content-Type" content="text/html;charset=utf-8"> <link rel="stylesheet" href="bootstrap/bootstrap.css"> <link rel="stylesheet" href="bootstrap/bootstrap-theme.css"> <script src="bootstrap/jquery-1.10.2.js"></script> <script src="bootstrap/bootstrap.js"></script> <style> .fileinput-button { position: relative; display: inline-block; overflow: hidden; } .fileinput-button input{ position:absolute; right: 0px; top: 0px; opacity: 0; -ms-filter: 'alpha(opacity=0)'; font-size: 200px; } </style> </head> <body style="padding: 10px"> <div align="center"> <span class="btn btn-success fileinput-button"> <span>上传</span> <input type="file"> </span> </div> </body> </html>