SpringBoot在项目中访问静态资源步骤分析
xl649138628 人气:0在springboot项目中如果要在不集成templates的情况下访问静态资源需要做以下配置
1.在项目的application.yml文件中做如下配置
spring:
profiles:
active: dev
mvc:
view:
prefix: /
suffix: .html
重点在
配置后生成为WebMvcProperties 配置类。该配置类中有一个内部类View
@ConfigurationProperties(prefix = "spring.mvc") public class WebMvcProperties {
View类可以配置视图的前缀和后缀
public static class View { /** * Spring MVC view prefix. 前缀 */ private String prefix; /** * Spring MVC view suffix. 后缀 */ private String suffix;
2.在项目的resource路径下新建文件夹
在ResourceHttpRequestHandler类的getResource方法中调用了getLocations()方法。
protected Resource getResource(HttpServletRequest request) throws IOException { String path = (String) request.getAttribute(HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE); if (path == null) { throw new IllegalStateException("Required request attribute '" + HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE + "' is not set"); } path = processPath(path); if (!StringUtils.hasText(path) || isInvalidPath(path)) { if (logger.isTraceEnabled()) { logger.trace("Ignoring invalid resource path [" + path + "]"); } return null; } if (isInvalidEncodedPath(path)) { if (logger.isTraceEnabled()) { logger.trace("Ignoring invalid resource path with escape sequences [" + path + "]"); } return null; } ResourceResolverChain resolveChain = new DefaultResourceResolverChain(getResourceResolvers()); //重点关注此处 Resource resource = resolveChain.resolveResource(request, path, getLocations()); if (resource == null || getResourceTransformers().isEmpty()) { return resource; } ResourceTransformerChain transformChain = new DefaultResourceTransformerChain(resolveChain, getResourceTransformers()); resource = transformChain.transform(request, resource); return resource; }
getLocations()方法返回的locations来自与springboot项目,其中时配置类ResourceProperties赋值。赋值的数据为
"classpath:/META-INF/resources/",
"classpath:/resources/",
"classpath:/static/",
"classpath:/public/"
四个路径
@ConfigurationProperties(prefix = "spring.resources", ignoreUnknownFields = false) public class ResourceProperties { private static final String[] CLASSPATH_RESOURCE_LOCATIONS = { "classpath:/META-INF/resources/", "classpath:/resources/", "classpath:/static/", "classpath:/public/" }; /** * Locations of static resources. Defaults to classpath:[/META-INF/resources/, * /resources/, /static/, /public/]. */ private String[] staticLocations = CLASSPATH_RESOURCE_LOCATIONS;
所以要访问静态资源需要配置到这四个路径下,如果所示
3.API端按如下编码
@Controller public class PageApi { @GetMapping({"/", "/index"}) public String toPage(String id){ return "index"; } }
总结:
按照上面的配置后我们就可以访问到静态资源。
加载全部内容