Spring MVC 對(duì)靜態(tài)資源的HTTP緩存支持

你可以設(shè)置ResourceHttpRequestHandler上的cachePeriod屬性值，或使用一個(gè)CacheControl實(shí)例來支持更細(xì)致的指令：

@Configuration
@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/resources/**")
                .addResourceLocations("/public-resources/")
                .setCacheControl(CacheControl.maxAge(1, TimeUnit.HOURS).cachePublic());
    }

}

XML中寫法則如下：

<mvc:resources mapping="/resources/**" location="/public-resources/">
    <mvc:cache-control max-age="3600" cache-public="true"/>
</mvc:resources>