spring boot+bootstrap实现动态轮播图实战
1.bootstrap轮播图
最近开发了个网站需要用到轮播图，正好前端用的是Bootstrap，这里就实战一下。
水平一般能力有限，仅供参考。
前提条件：
- bootstrap4.5
- jquery
- 3张大小适中图片
实现效果：
代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>bootstrap轮播图实战</title>
<link
href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.5.3/css/bootstrap.min.css"
rel="stylesheet"
/>
<style type="text/css">
.carousel-item {
height: 400px;
}
</style>
</head>
<body>
<div class="container">
<div class="row">
<div class="col-lg-8">
<div
id="carouselExampleIndicators"
class="carousel slide"
data-ride="carousel"
data-interval="1500"
>
<ol class="carousel-indicators">
<li
data-target="#carouselExampleIndicators"
data-slide-to="0"
class="active"
></li>
<li
data-target="#carouselExampleIndicators"
data-slide-to="1"
></li>
<li
data-target="#carouselExampleIndicators"
data-slide-to="2"
></li>
</ol>
<div class="carousel-inner">
<div class="carousel-item active">
<img src="images/s1.jpg" class="d-block w-100" alt="..." />
</div>
<div class="carousel-item">
<img src="images/s2.jpg" class="d-block w-100" alt="..." />
</div>
<div class="carousel-item">
<img src="images/s3.jpg" class="d-block w-100" alt="..." />
</div>
</div>
<a
class="carousel-control-prev"
href="#carouselExampleIndicators"
role="button"
data-slide="prev"
>
<span
class="carousel-control-prev-icon"
aria-hidden="true"
></span>
<span class="sr-only">Previous</span>
</a>
<a
class="carousel-control-next"
href="#carouselExampleIndicators"
role="button"
data-slide="next"
>
<span
class="carousel-control-next-icon"
aria-hidden="true"
></span>
<span class="sr-only">Next</span>
</a>
</div>
</div>
</div>
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.5.3/js/bootstrap.min.js"></script>
</body>
</html>
2.实现动态可配置轮播图
静态的轮播图不是最终目的，下面就结合spring boot+thymeleaf+bootstrap来实现个动态轮播图，支持在后台动态添加扩展轮播图。
数据接口
@PostMapping("list")
@ResponseBody
public Object list(String gridPager) {
Pager pager = JsonUtil.getObjectFromJson(gridPager, Pager.class);
Map<String, Object> parameters = null;
if(Validator.isNullOrEmpty(pager.getParameters())){
parameters = new HashMap<>();
}else{
parameters = pager.getParameters();
}
// 构建查询条件
QueryWrapper<Slide> queryWrapper = new QueryWrapper<>();
queryWrapper.allEq(parameters);
Page<Slide> list = (Page<Slide>) slideService.page(new Page<Slide>(pager.getNowPage(), pager.getPageSize()), queryWrapper);
makeGridResult(parameters, pager, list);
return parameters;
}
- 数据结构
[{
"createTime": 1606661677000,
"createUser": "admin",
"id": 2,
"img": "/api/file/img/2020_12_4aea68629ddc4f5db015402bfcbccabe.png",
"summary": "",
"title": "Spring Boot图书管理系统",
"updateTime": 1607838814000,
"updateUser": "admin",
"url": "/article/32"
}, {
"createTime": 1606661712000,
"createUser": "admin",
"id": 3,
"img": "/api/file/img/2020_12_f6142c52c9394181b117a7974fb21528.png",
"summary": "",
"title": "Python文件上传下载",
"updateTime": 1607839295000,
"updateUser": "admin",
"url": "/article/34"
}]
前端代码
<!--轮播图-->
<div class="col-lg-8">
<div class="carousel slide" id="carousel-pic" data-ride="carousel" data-interval="1500">
<ol class="carousel-indicators">
<li th:each="slide,stat:${session.slideList}" th:class="${stat.index==0}?'active'" th:attr="data-slide-to=${stat.index}" data-target="#carousel-pic">
</li>
</ol>
<div class="carousel-inner">
<div class="item" th:each="slide,stat:${session.slideList}" th:classappend="${stat.index==0}? 'active'">
<a href="https://blog.csdn.net/indexman/article/category/8483626" th:href="${slide.url}" target="_blank">
<img alt="" th:src="${slide.img}"/>
<div class="carousel-caption">
<h4 th:text="${slide.title}">
Spring Boot
</h4>
<p th:text="${slide.summary}">
Spring Boot是当下最流行的Java企业级应用开发框架，学习Spring Boot尽在此站。
</p>
</div>
</a>
</div>
</div>
<a data-slide="prev" href="#carousel-pic" class="left carousel-control" role="button">
<span class="glyphicon glyphicon-chevron-left"></span>
</a>
<a data-slide="next" href="#carousel-pic" class="right carousel-control" role="button">
<span class="glyphicon glyphicon-chevron-right"></span>
</a>
</div>
<div class="list-group" id="submenu-list">
</div>
</div>
实现效果
