如何在Spring Boot中启用HTTP响应缓存 [英] How to enable HTTP response caching in Spring Boot

问题描述

我使用Spring Boot 1.0.2实现了一个REST服务器。我无法阻止Spring设置禁用HTTP缓存的HTTP标头。

I have implemented a REST server using Spring Boot 1.0.2. I'm having trouble preventing Spring from setting HTTP headers that disable HTTP caching.

我的控制器如下：

@Controller
public class MyRestController {
    @RequestMapping(value = "/someUrl", method = RequestMethod.GET)
    public @ResponseBody ResponseEntity<String> myMethod(
            HttpServletResponse httpResponse) throws SQLException {
        return new ResponseEntity<String>("{}", HttpStatus.OK);
    }
}

所有HTTP响应都包含以下标题：

All HTTP responses contain the following headers:

Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Expires: 0
Pragma: no-cache

我已尝试以下方法删除或更改这些标题：

I've tried the following to remove or change those headers:

1. 在控制器中调用 setCacheSeconds（-1）。


2. 在控制器中调用 httpResponse.setHeader（Cache-Control，max-age = 123）。


3. 定义 @Bean ，返回 WebContentInterceptor 我称之为 setCacheSeconds（ - 1）。


4. 将属性 spring.resources.cache-period 设置为-1或正值在 application.properties 。

1. Call setCacheSeconds(-1) in the controller.
2. Call httpResponse.setHeader("Cache-Control", "max-age=123") in the controller.
3. Define @Bean that returns WebContentInterceptor for which I've called setCacheSeconds(-1).
4. Set property spring.resources.cache-period to -1 or a positive value in application.properties.

以上都没有任何效果。如何在Spring Boot中为所有或单个请求禁用或更改这些标头？

None of the above have had any effect. How do I disable or change these headers for all or individual requests in Spring Boot?

推荐答案

关闭无缓存HTTP标头由Spring Security设置。这在 http：//docs.spring中讨论。 io / spring-security / site / docs / current / reference / htmlsingle /＃headers 。

Turns out the no-cache HTTP headers are set by Spring Security. This is discussed in http://docs.spring.io/spring-security/site/docs/current/reference/htmlsingle/#headers.

以下禁用HTTP响应头 Pragma：no-cache ，但不能解决问题：

The following disables the HTTP response header Pragma: no-cache, but doesn't otherwise solve the problem:

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
@EnableWebMvcSecurity
public 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();
    }
}

我最终完全禁用了Spring Security for public static resources如下（与上面相同的类）：

I ended up disabling Spring Security completely for public static resources as following (in the same class as above):

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

这需要配置两个资源处理程序才能正确获取缓存控制头：

This requires configuring two resource handlers to get cache control headers right:

@Configuration
public 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);
    }
}

另请参阅在Spring Boot& ;;中提供静态Web资源。 Spring Security应用程序。

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