实现图片的轮播效果

1.显示页面：index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript" src="js/jquery-1.7.2.js"></script>
<script type="text/javascript">
$(function(){
	var index = 0 ;
	var imglength = ${list.size()};  //返回数组长度
	$(".imgindex").eq(index).css("background","green"); //初始化第一张图片的背景

	$.each($(".pic"),function(i,n){
		$(n).css("left",400*i+"px");
	})
	
	setInterval(function(){
		$.each($(".pic"),function(i,n){
			$(n).animate({"left":parseInt($(n).css("left"))-400+"px"},1000,function(){
				//当动画执行完成后执行的功能
				if(i==0){
					var $newimg = $(n).clone();
					$(n).remove();
					$newimg.css("left","800px");
					$("#imgDiv").append($newimg);
				}
			});
		})
		index++;
		if(index>imglength-1){
			index=0;
		}
		
		$(".imgindex").css("background","red");  //初始化所有图片的默认背景
		$(".imgindex").eq(index).css("background","green"); //改变指定图片index的背景色
	},1500);
})
</script>
</head>
<body>
	<div id="imgDiv" style="width:400px; height:200px;border:1px solid black; margin-left:100px; position:absolute;overflow:hidden;">
		<c:forEach items="${list}" var="pic">
			<img class="pic" src="${pic.path }" width="400" height="200" style="position:absolute;left:0px; top:0px;"/>
		</c:forEach>
	</div>
	<div style=" position:absolute;top:180px;left:300px;">
		<c:forEach begin="1" end="${list.size() }" var="step">
			<%-- <span class="imgindex" style="background-color:red;">${step }</span>
 --%>	
 			<span class="imgindex"  style="background-color:red;"><img src="images/dot.png"></img></span>
		</c:forEach>
	</div>
</body>
</html>

2.后台返回逻辑:

@Controller
public class PicController {
	@Resource
	private PicService picServiceImpl;
	@RequestMapping("/")
	public String welcome(Model model){
		model.addAttribute("list",picServiceImpl.show());
		return "/index.jsp";
	}
}