Question

目前我有以下过滤器清除每个请求的缓存：

val rddStringToRowRDD = rdd.map(value => Row(value))
val dfschema = StructType(Array(StructField("value",StringType)))
val rddToDF = sparkSession.createDataFrame(rddStringToRowRDD,dfschema)
val rDDToDataSet = rddToDF.as[String]

请在下面找到退出方法：

public class CacheControlFilter implements Filter {

    private static final Logger logger = Logger.getLogger(CacheControlFilter.class);


    @Override
    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {

        HttpServletResponse resp = (HttpServletResponse) response;


        resp.setDateHeader("Expires", 0);
        resp.setHeader("Last-Modified", new Date().toString());
        resp.setHeader("Cache-Control", "no-store, no-cache, must-revalidate, max-age=0, post-check=0, pre-check=0");
        resp.setHeader("Pragma", "no-cache");
        resp.setHeader("X-Content-Type-Options", "nosniff");
        resp.setHeader("X-Frame-Options", "DENY");
        chain.doFilter(request, response);
    }

有没有办法只在用户注销而不是每个请求时清除缓存？我想将我的静态文件（css文件，js文件）存储在缓存中，并仅在用户注销时将其清除

欢迎任何建议。

由于

Answer 1

请将您的过滤器配置为/ logout url的web.xml，例如：

<filter>
        <filter-name>CacheControlFilter</filter-name>
        <filter-class><YOUR_PACKAGE>.CacheControlFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>CacheControlFilter</filter-name>
        <url-pattern>/logout</url-pattern>
    </filter-mapping>

如果没有使用web.xml，请看这个链接：

https://www.mkyong.com/spring-mvc/how-to-register-a-servlet-filter-in-spring-mvc/

Answer 2

您可以通过初始化程序类注册缓存过滤器。

RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond ^([\w-]+)$ category/news/$1 [L]

祝你好运

SpringMVC - 如何仅在用户注销时清除缓存

2 个答案: