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How to enable gzip compression (both static and dynamic) for Jetty9?

I am using Jetty9 and I want to check if text file compression will improve performance. At first, I am interested in serving offline compressed files as described in: http://marianoguerra.org/posts/201205enable-gzip-compression-in-jetty.html

My code looks like this:

static private void set_jetty_handlers(Server server)
    {
    // gzip: I have added it to to serve off-line compressed JavaScript, CSS etc.
    // as described at: http://marianoguerra.org/posts/201205enable-gzip-compression-in-jetty.html
    ServletHolder servletHolder = new ServletHolder(new DefaultServlet());
    servletHolder.setInitParameter("gzip", "true");
    ServletContextHandler s_context_handler = new ServletContextHandler();
    s_context_handler.addServlet(servletHolder,"/*");

    ResourceHandler resource_handler = new ResourceHandler();
    resource_handler.setDirectoriesListed(false);
    resource_handler.setWelcomeFiles(new String[] {"index.html"});
    resource_handler.setResourceBase("");
    resource_handler.setCacheControl(MAX_AGE);

    // gzip: I have added it to to serve offline compressed JavaScript, CSS etc.
    resource_handler.setHandler(s_context_handler);

    // I want to work with aliases (links and symbolic links)
    ContextHandler context_handler = new ContextHandler();
    context_handler.addAliasCheck(new ContextHandler.ApproveAliases());

    HandlerList handlers = new HandlerList();
    handlers.setHandlers(new Handler[] { new my_jetty_handler(), resource_handler, new DefaultHandler() });
    context_handler.setHandler(handlers);

    server.setHandler(context_handler);
    configureThreadPool(server);
    } // set_jetty_handlers

But when I squeezed test.htmlin test.html.gz, I got it HTTP ERROR: 404. The lines I added to enable gzip compression are marked gzip:in the comment.

I also found that an older version of Jetty had ResourceHandler.setMinGzipLength(). It is not available in the current version of Jetty, but from the documentation it does what I want.

gzip? , GzipFilter my_jetty_handler(), , , Java.

+4
2

gzip :

GzipHandler gzipHandlerRES = new GzipHandler();
gzipHandlerRES.setMimeTypes("text/html,text/plain,text/xml,text/css,application/javascript,text/javascript");
gzipHandlerRES.setHandler(resource_handler);

( test.html test.html.gz).

+5

, .

-, :

package jetty;

import java.util.EnumSet;

import javax.servlet.DispatcherType;

import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.ServerConnector;
import org.eclipse.jetty.server.handler.ContextHandler;
import org.eclipse.jetty.servlet.DefaultServlet;
import org.eclipse.jetty.servlet.FilterHolder;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;
import org.eclipse.jetty.servlets.GzipFilter;
import org.eclipse.jetty.util.thread.QueuedThreadPool;
import org.eclipse.jetty.util.thread.ThreadPool;

public class GzipExample
{
    public static void main(String[] args)
    {
        ThreadPool threadPool = new QueuedThreadPool();
        Server server = new Server(threadPool);
        ServerConnector connector = new ServerConnector(server);
        connector.setPort(8080);
        server.addConnector(connector);

        ServletContextHandler context = new ServletContextHandler();
        context.setContextPath("/");
        // Welcome files are part of the context
        context.setWelcomeFiles(new String[] { "index.html" });
        // Add alias check logic to context
        context.addAliasCheck(new ContextHandler.ApproveAliases());
        server.setHandler(context);

        // Add dynamic Gzip compression, as a servlet filter
        FilterHolder gzipHolder = context.addFilter(GzipFilter.class,"/*",EnumSet.of(DispatcherType.REQUEST));
        gzipHolder.setInitParameter("methods","GET,POST");
        // response bytes required before gzip kicks in 
        gzipHolder.setInitParameter("minGzipSize", "256");
        // mime-types to compress (seen as response type)
        gzipHolder.setInitParameter("mimeTypes", "text/plain,text/css,text/html,text/javascript");

        // Add your own servlets here
        context.addServlet(HelloServlet.class,"/hello/*");

        // Lastly, the default servlet for resource base content (serves static files)
        // It is important that this is last.
        ServletHolder defHolder = new ServletHolder("default", DefaultServlet.class);
        // Cannot be null or empty, must be declared, must be a directory, can be a URL to some jar content
        defHolder.setInitParameter("resourceBase","./resource-base/");
        defHolder.setInitParameter("dirAllowed","true");
        defHolder.setInitParameter("gzip", "true");
        defHolder.setInitParameter("otherGzipFileExtensions", ".svgz");
        defHolder.setInitParameter("cacheControl","private, max-age=0, no-cache");
        context.addServlet(defHolder,"/");
    }
}

:

  • ThreadPool , .
  • ServletContextHandler - , , , , .
  • GzipFilter - ( Jetty 9.3.x gzip, http/2 + async i/o) gzip.
  • GzipFilter gzip, , mime- ..
  • DefaultServlet - , , . (: /main.css, gzip, /main.css.gz - , /main.css)
  • resourceBase , , .
  • ResourceHandler , gzip, , , / ..
  • Jetty Handlers gzip, . ( Jetty 9.3.0).
+1

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