Question

我似乎无法让我的码头使用缓存:( 我有一个只显示html的jetty服务器。我在那里有javascripts和很多我不想每次都加载的图像。例如，我的应用程序需要在3页之间切换10秒。加载JQuery三次是耗时的，并加载徽标图片，所有这些都需要更长的时间。这就是为什么我想启用缓存。

这就是我得到的：

server = new Server(); //new Jetty Server
//setting up a ssl connection
try
{
    SslContextFactory cf = new SslContextFactory();
    cf.setKeyStorePath(keystore);
    cf.setKeyStorePassword("password");

    HttpConfiguration config = new HttpConfiguration();
    config.addCustomizer(new SecureRequestCustomizer());
    config.setSecureScheme("https");
    config.setSecurePort(8443);

    HttpConfiguration sslConfiguration = new HttpConfiguration(config);
    sslConfiguration.addCustomizer(new SecureRequestCustomizer());

    httpConnector = new ServerConnector(server);
    httpConnector.addConnectionFactory(new HttpConnectionFactory(config));
    httpConnector.setPort(suggestHttpPort());
    httpConnector.setName("unsecured");
    sslConnector = new ServerConnector(server, 
            new SslConnectionFactory(cf, HttpVersion.HTTP_1_1.toString()), 
            new HttpConnectionFactory(sslConfiguration));
    sslConnector.setPort(suggestHttpSSLPort());
    sslConnector.setName("secured");

    server.setConnectors(new Connector[] { httpConnector, sslConnector });  
}
catch (Exception e)
{
    log.error("setting up Jetty failed", e);
}
// This is where i want to enable caching, at least that is what i have figuged out so far but its not working
DefaultServlet defaultServlet = new DefaultServlet();
ServletHolder holder = new ServletHolder(defaultServlet);
holder.setInitParameter("cacheControl", "max-age=120, public");
ServletContextHandler bb = new ServletContextHandler();
bb.addServlet(holder, "/");
server.setHandler(bb);
server.start();

我做错了什么？我想为所有内容启用缓存......

Answer 1

不要直接使用ServletHolder针对已启动的Servlet，让ServletHolder创建并初始化类引用。

您需要ServletContextHandler和DefaultServlet可以使用的已定义的基本资源（这应该是指向静态文件内容根的URI）

示例：

ServletContextHandler context = new ServletContextHandler();
context.setContextPath("/");
context.setBaseResource(Resource.newResource(webRootUri));

ServletHolder holderPwd = new ServletHolder("default", DefaultServlet.class);
holderPwd.setInitParameter("dirAllowed", "true");
holderPwd.setInitParameter("cacheControl", "max-age=3600,public");
context.addServlet(holderPwd,"/");
server.setHandler(context);

使用缓存嵌入（以编程方式）配置jetty 9.3.0

1 个答案: