文件下传按钮样式

<script>
        $(function(){
		$("#button2").click(function(e){
			$("#button1").click();
		});
		$("#button1").change(function(e){
			console.log(22);
		});
	});
</script>
<input type="file" id="button1" value="button1"/>
<a href="#" id="button2" targetto="input#button1">button2</a>