Skip to main content
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [List Home]
Re: [jetty-users] Need help configuring swagger into jetty server
Most of your issues are you don't know that Jetty 11 is part of the Jakarta EE 9 "big bang" which changed the namespace from `javax.<spec>` to `jakarta.<spec>`, rendering the old spec namespace invalid and unusable.

> compile 'org.eclipse.jetty:jetty-server:11.0.0'
> compile 'javax.servlet:servlet-api:2.5'

Jetty 11 is a Jakarta EE 9 `jakarta.servlet` container.
That `javax.servlet` dependency is bad, and should not be used at all.
If you have any component needing it, you have a bad component in use for Jetty 11.

> implementation group: 'io.swagger', name: 'swagger-jersey2-jaxrs', version: '1.5.3'

That has a dependency on javax.servlet, so that `swagger-jersey2-jaxrs` will not work with Jetty 11. (You'll want Jetty 10 for that)
https://search.maven.org/artifact/io.swagger/swagger-jersey2-jaxrs/1.5.3/jar

> compile 'org.springframework.data:spring-data-redis:1.8.0.RELEASE'
> compile 'redis.clients:jedis:2.9.0'

Those have cdi, javax.servlet, javax.el, and other dependencies that are still on `javax.*` namespace.

In short, you'll either need to upgrade all of your dependencies to ones that use Jakarta EE 9 on `jakarta.<spec>` or downgrade to Jetty 10.
You cannot mix and match both `javax.<spec>` and `jakarta.<spec>` like that.

Joakim Erdfelt / joakim@xxxxxxxxxxx


On Mon, Apr 26, 2021 at 7:07 PM Aniruddha Tekade via jetty-users <jetty-users@xxxxxxxxxxx> wrote:
Hello,

I am trying to add a swagger configuration into my jetty server but when I try to add the 
ServletContainer and then attach ServletHolder to it, it fails. Seems like ServletContainer is not able to find any such constructor - 

package com.example.hfs;

import com.cloudian.hfs.handlers.*;
import jakarta.servlet.Servlet;
import org.eclipse.jetty.server.HttpConfiguration;
import org.eclipse.jetty.server.HttpConnectionFactory;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.ServerConnector;
import org.eclipse.jetty.server.handler.ContextHandler;
import org.eclipse.jetty.server.handler.ContextHandlerCollection;
import org.eclipse.jetty.server.handler.ResourceHandler;
import org.eclipse.jetty.servlet.DefaultServlet;
import org.eclipse.jetty.util.thread.QueuedThreadPool;
import io.swagger.jaxrs.listing.ApiListingResource;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;
import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.servlet.ServletContainer;
import io.swagger.jaxrs.config.BeanConfig;



public class StartHFS {

    public static void main(String[] args) throws Exception {
        System.out.println("StartHFS");

        // Build the Swagger Bean
        buildSwagger();

        // Create and configure a ThreadPool.
        QueuedThreadPool threadPool = new QueuedThreadPool();
        threadPool.setName("server");

        // Create a Server instance.
        Server server = new Server(threadPool);

        // HTTP configuration and connection factory.
        HttpConfiguration httpConfig = new HttpConfiguration();
        HttpConnectionFactory http11 = new HttpConnectionFactory(httpConfig);

        // Create a ServerConnector to accept connections from clients.
        ServerConnector connector = new ServerConnector(server, 1, 1, http11);
        connector.setPort(8080);
        connector.setHost("0.0.0.0");
        connector.setAcceptQueueSize(128);
        server.addConnector(connector);

        addHandlers(server);

        // Start the Server so it starts accepting connections from clients.
        server.start();
        server.join();

        System.out.println("StartHFS DONE");
    }

    static void addHandlers(final Server server) throws Exception {
        ContextHandlerCollection contexts = new ContextHandlerCollection();
        server.setHandler(contexts);

        ContextHandler logHandler = new ContextHandler("/log");
        logHandler.setHandler(new LoggingHandler());
        contexts.addHandler(logHandler);

        ContextHandler helloHandler = new ContextHandler("/hello");
        helloHandler.setHandler(new HelloHandler());
        contexts.addHandler(helloHandler);

        ContextHandler featureStoreHandler = new ContextHandler("/featurestore");
        featureStoreHandler.setHandler(new FeatureStoreHandler());
        contexts.addHandler(featureStoreHandler);

        ContextHandler featureGroupsHandler = new ContextHandler("/featuregroups");
        featureGroupsHandler.setHandler(new FeatureGroupsHandler());
        contexts.addHandler(featureGroupsHandler);

        ContextHandler recordsHandler = new ContextHandler("/FeatureGroup");
        recordsHandler.setHandler(new RecordsHandler());
        contexts.addHandler(recordsHandler);

        // Handler for HFS API, swagger.
        contexts.addHandler(buildHfsContext());
    }

    private static ContextHandler buildHfsContext() {
        ResourceConfig resourceConfig = new ResourceConfig();
        resourceConfig.packages(StartHFS.class.getPackage().getName(),
                FeatureStoreHandler.class.getPackage().getName(),
                FeatureGroupsHandler.class.getPackage().getName(),
                HelloHandler.class.getPackage().getName(),
                LoggingHandler.class.getPackage().getName(),
                RecordsHandler.class.getPackage().getName(),
                ApiListingResource.class.getPackage().getName());
        ServletContainer servletContainer = new ServletContainer(resourceConfig);
        ServletHolder servletHolder = new ServletHolder(servletContainer); //"default", DefaultServlet.class);
        ServletContextHandler servletContextHandler = new ServletContextHandler( ServletContextHandler.SESSIONS );
        servletContextHandler.setContextPath( "/hfs" );
        servletContextHandler.addServlet( servletHolder, "/hfs/*");
        return servletContextHandler;
    }

}
In above code - 
ServletHolder servletHolder = new ServletHolder(servletContainer);
this line from buildHfsContext() method is failing. I am particularly trying to configure the SwaggerConfig for my main class. And I am referring a solution from https://github.com/SriramKeerthi/swagger-jersey2-jetty

My build.gradle contains dependencies - 
dependencies {
    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.6.0'
    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine'
    compile 'org.eclipse.jetty:jetty-server:11.0.0'
    compile 'org.eclipse.jetty:jetty-servlet:11.0.0'
    compile 'org.eclipse.jetty:jetty-util:11.0.0'
    compile 'org.springframework.data:spring-data-redis:1.8.0.RELEASE'
    compile 'redis.clients:jedis:2.9.0'
    implementation group: 'org.json', name: 'json', version: '20201115'
    implementation group: 'io.swagger', name: 'swagger-jersey2-jaxrs', version: '1.5.3'
    compile 'javax.servlet:servlet-api:2.5'
}
Can someone help me out? I am blocked by this situation at the moment. 

Best,
Aniruddha
========
ᐧ
_______________________________________________
jetty-users mailing list
jetty-users@xxxxxxxxxxx
To unsubscribe from this list, visit https://www.eclipse.org/mailman/listinfo/jetty-users

Back to the top