效果：
源码：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<link href="css/bootstrap.min.css" rel="stylesheet">
<style type="text/css">
.carousel-inner img{
margin: 0 auto;
width:1200px;
high:200px;
}
</style>
</head>
<body>
<div id="myCarousel" class="carousel slide">
<ol class="carousel-indicators">
<li data-target="#myCarousel" data-slide-to="0" class="active"></li>
<li data-target="#myCarousel" data-slide-to="1"></li>
<li data-target="#myCarousel" data-slide-to="2"></li>
</ol>
<!-- Carousel items -->
<div class="carousel-inner">
<div class="active item">
<img src="img/0.jpg" alt="第一张" />
</div>
<div class="item">
<img src="img/1.jpg" alt="第二张" />
</div>
<div class="item">
<img src="img/2.png" alt="第三张" />
</div>
</div>
<!-- Carousel nav -->
<a class="carousel-control left" href="#myCarousel" data-slide="prev">‹</a>
<a class="carousel-control right" href="#myCarousel" data-slide="next">›</a>
</div>
<script src="js/jquery-1.12.4.js"></script>
<script src="js/bootstrap.min.js"></script>
<script type="text/javascript" >
$('.carousel').carousel({
interval: 2000
})
</script>
</body>
</html>