SpringBoot与Web
先在idea中选择场景
SpringBoot已经默认将这些常见配置好了，我们只需要在配置文件中指定少量配置就可以运行起来
然后我们可以开始编写业务代码了
SpringBoot与静态资源
WebMvcAutoConfiguration
打开WebMvcAutoConfiguration.java
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| @Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
if (!this.resourceProperties.isAddMappings()) {
logger.debug("Default resource handling disabled");
return;
}
Duration cachePeriod = this.resourceProperties.getCache().getPeriod();
CacheControl cacheControl = this.resourceProperties.getCache().getCachecontrol().toHttpCacheControl();
if (!registry.hasMappingForPattern("/webjars/**")) {
customizeResourceHandlerRegistration(registry.addResourceHandler("/webjars/**")
.addResourceLocations("classpath:/META-INF/resources/webjars/")
.setCachePeriod(getSeconds(cachePeriod)).setCacheControl(cacheControl));
}
String staticPathPattern = this.mvcProperties.getStaticPathPattern();
if (!registry.hasMappingForPattern(staticPathPattern)) {
customizeResourceHandlerRegistration(registry.addResourceHandler(staticPathPattern)
.addResourceLocations(getResourceLocations(this.resourceProperties.getStaticLocations()))
.setCachePeriod(getSeconds(cachePeriod)).setCacheControl(cacheControl));
}
}
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配置jquery
所有/webjars/下的资源，都去classpath:/MEFA-INF/resources/webjars/找
在Webjars中选择Maven,然后就可以导入你想要jquery的依赖了
比方安装了这个以后就可以通过下面的地址访问jquery了localhost:8080/webjars/jquery/3.3.1/jquery.js
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| <dependency>
<groupId>org.webjars</groupId>
<artifactId>jquery</artifactId>
<version>3.5.0</version>
</dependency>
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默认映射
ResourceProperties 可以设置静态资源的配置，如缓存时间
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| @ConfigurationProperties(prefix = "spring.resources", ignoreUnknownFields = false)
public class ResourceProperties {
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还会在下面的路径中找(静态资源的文件夹)
比方说你要访问一个localhost:8080/myjs.js,如果找不到的话，就在下面的文件夹中寻找
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| private static final String[] CLASSPATH_RESOURCE_LOCATIONS = { "classpath:/META-INF/resources/",
"classpath:/resources/", "classpath:/static/", "classpath:/public/" };
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欢迎界面
欢迎页面, 静态资源文件夹的/index.html, 见下面的代码
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| @Bean
public WelcomePageHandlerMapping welcomePageHandlerMapping(ApplicationContext applicationContext,
FormattingConversionService mvcConversionService, ResourceUrlProvider mvcResourceUrlProvider) {
WelcomePageHandlerMapping welcomePageHandlerMapping = new WelcomePageHandlerMapping(
new TemplateAvailabilityProviders(applicationContext), applicationContext, getWelcomePage(),
this.mvcProperties.getStaticPathPattern());
welcomePageHandlerMapping.setInterceptors(getInterceptors(mvcConversionService, mvcResourceUrlProvider));
return welcomePageHandlerMapping;
}
private Optional<Resource> getWelcomePage() {
String[] locations = getResourceLocations(this.resourceProperties.getStaticLocations());
return Arrays.stream(locations).map(this::getIndexHtml).filter(this::isReadable).findFirst();
}
private Resource getIndexHtml(String location) {
return this.resourceLoader.getResource(location + "index.html");
}
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图标
配置自己的favicon.ico
SpringBoot2中没有这个东西，可能移到其他位置去了
定义自己的映射
利用配置文件来自己定义/的映射
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| spring.resources.static-locations = classpath:/hello/,classpath:/hello2/
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