第一种方式 : 放在src/main/webapp目录下
放在webapp目录下的静态资源是可以直接访问的
user.html
2.png
在user.html中引用2.png
第二种方式：放在classpath下
ResourceProperties中的说明
org.springframework.boot.autoconfigure.web.ResourceProperties
private static final String[] CLASSPATH_RESOURCE_LOCATIONS = {
"classpath:/META-INF/resources/", "classpath:/resources/",
"classpath:/static/", "classpath:/public/" };静态资源默认放在classpath路径下：Defaults to classpath:[/META-INF/resources/,/resources/, /static/, /public/] plus context:/ (the root of the servlet context).
person/index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<link href="/css/main.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="/js/main.js"></script>
<script type="text/javascript">
sayHello();
</script>
</head>
<body>
<h3>person page HTML</h3>
</body>
</html>
通过修改配置项，设置静态资源的位置
application.properties
# 修改默认的静态资源存放目录
spring.resources.static-locations=classpath:/web/