如何在Spring Boot中启用HTTP响应缓存

事实证明，Spring Security设置了无缓存HTTP标头。

以下内容禁用了HTTP响应标头

Pragma: no-cache

import org.springframework.context.annotation.Configuration;import org.springframework.security.config.annotation.web.builders.HttpSecurity;import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;import org.springframework.security.config.annotation.web.servlet.configuration.EnableWebMvcSecurity;@Configuration@EnableWebMvcSecuritypublic class SecurityConfig extends WebSecurityConfigurerAdapter {    @Override    protected void configure(HttpSecurity http) throws Exception {        // Prevent the HTTP response header of "Pragma: no-cache".        http.headers().cacheControl().disable();    }}

我最终完全为公共静态资源禁用了Spring Security，如下所示（与上述相同）：

@Overridepublic void configure(WebSecurity web) throws Exception {    web.ignoring().antMatchers("/static/public/**");}

这需要配置两个资源处理程序以正确获取缓存控制标头：

@Configurationpublic class MvcConfigurer extends WebMvcConfigurerAdapter        implements EmbeddedServletContainerCustomizer {    @Override    public void addResourceHandlers(ResourceHandlerRegistry registry) {        // Resources without Spring Security. No cache control response headers.        registry.addResourceHandler("/static/public/**") .addResourceLocations("classpath:/static/public/");        // Resources controlled by Spring Security, which        // adds "Cache-Control: must-revalidate".        registry.addResourceHandler("/static/**") .addResourceLocations("classpath:/static/") .setCachePeriod(3600*24);    }}