有没有办法在内存中缓存Spring<mvc:resources>文件?

嗯,正如你所说,你想 cache 基础目标资源的全部内容,必须缓存 byte[] 从…起 inputStream .

自从 <mvc:resources> 由支持 ResourceHttpRequestHandler 编写自己的子类并直接使用它而不是自定义标记是没有止境的。

并在超出范围内实现缓存逻辑 writeContent 方法:

public class CacheableResourceHttpRequestHandler extends ResourceHttpRequestHandler {

        private Map<URL, byte[]> cache = new HashMap<URL, byte[]>();

        @Override
        protected void writeContent(HttpServletResponse response, Resource resource) throws IOException {
            byte[] content = this.cache.get(resource.getURL());
            if (content == null) {
                content = StreamUtils.copyToByteArray(resource.getInputStream());
                this.cache.put(resource.getURL(), content);
            }
            StreamUtils.copy(content, response.getOutputStream());
        }

    }

并将它从spring-config中用作泛型bean:

<bean id="staticResources" class="com.my.proj.web.CacheableResourceHttpRequestHandler">
    <property name="locations" value="/public-resources/"/>
</bean>

<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
    <property name="mappings">
        <value>/resources/**=staticResources</value>
    </property>
</bean>