A
A
Alexiuscrow2016-08-21 13:18:03
Java
Alexiuscrow, 2016-08-21 13:18:03

Migrating from Jersey 2.22.1 to Jersey 2.22.2 - what are the problems?

Unable to migrate from Jersey 2.22.1 to 2.22.2.
Application hierarchy:
4G5EMHY.png
Block with dependencies from build.gradle file:

def jerseyVersion = '2.22.1'
def hk2Version = '2.4.0-b31'
def giuceVersion = '4.0'

dependencies {
    //javax
    compile "javax.servlet:javax.servlet-api:3.1.0"
    //jersey
    compile "org.glassfish.jersey.core:jersey-server:${jerseyVersion}"
    compile "org.glassfish.jersey.containers:jersey-container-servlet:${jerseyVersion}"
    //hk2
    compile "org.glassfish.hk2:guice-bridge:${hk2Version}"
    //guice
    compile "com.google.inject:guice:${giuceVersion}"
    compile "com.google.inject.extensions:guice-servlet:${giuceVersion}"
}

web.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

    <display-name>REST API App</display-name>

    <listener>
        <listener-class>com.example.core.JerseyGuiceServletContextListener</listener-class>
    </listener>

    <filter>
        <filter-name>guiceFilter</filter-name>
        <filter-class>com.google.inject.servlet.GuiceFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>guiceFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

JerseyGuiceServletContextListener class:
package com.example.core;

import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.servlet.GuiceServletContextListener;

public class JerseyGuiceServletContextListener extends GuiceServletContextListener {
    @Override
    protected Injector getInjector() {
        return Guice.createInjector(new JerseyServletModuleConfig());
    }
}

JerseyServletModuleConfig class:
package com.example.core;

import com.google.inject.Scopes;
import com.google.inject.servlet.ServletModule;
import com.example.ws.HeyResource;
import org.glassfish.jersey.servlet.ServletContainer;

import java.util.Map;
import java.util.TreeMap;

class JerseyServletModuleConfig extends ServletModule {
    @Override
    protected void configureServlets() {
        Map<String, String> servletContainerParams = new TreeMap<>();
        servletContainerParams.put("javax.ws.rs.Application", JerseyConfiguration.class.getCanonicalName());
        bind(ServletContainer.class).in(Scopes.SINGLETON);
        filter("/*").through(ServletContainer.class, servletContainerParams);
        bind(HeyResource.class).in(Scopes.SINGLETON);
    }
}

JerseyConfiguration class:
package com.example.core;

import com.google.inject.Injector;
import org.glassfish.hk2.api.ServiceLocator;
import org.glassfish.jersey.server.ResourceConfig;
import org.jvnet.hk2.guice.bridge.api.GuiceBridge;
import org.jvnet.hk2.guice.bridge.api.GuiceIntoHK2Bridge;

import javax.inject.Inject;
import javax.servlet.ServletContext;

class JerseyConfiguration extends ResourceConfig {
    @Inject
    public JerseyConfiguration(ServiceLocator serviceLocator, ServletContext servletContext) {
        packages("com.example.ws");
        GuiceBridge.getGuiceBridge().initializeGuiceBridge(serviceLocator);
        GuiceIntoHK2Bridge guiceBridge = serviceLocator.getService(GuiceIntoHK2Bridge.class);
        guiceBridge.bridgeGuiceInjector((Injector) servletContext.getAttribute(Injector.class.getName()));
    }
}

With Jersey version 2.22.1 everything works fine. As soon as I change the version to 2.22.2, I get an error:
21-Aug-2016 12:34:12.577 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.filterStart Exception starting filter guiceFilter
java.lang.NullPointerException
at org.glassfish.jersey.servlet.init.FilterUrlMappingsProviderImpl .getFilterUrlMappings(FilterUrlMappingsProviderImpl.java:66)
at org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:444)

I thought the problem might lie in the version of guice-bridge. Changed from version 2.4.0-b31 to version 2.4.0-b34 (which is used for various hk2 dependencies from org.glassfish.jersey.core:jersey-server) - did not help.
Link to the FilterUrlMappingsProviderImpl class: https://github.com/jersey/jersey/blob/79d7767be510...
Based on the FilterUrlMappingsProviderImpl class described in the link above, it becomes clear that it is not possible to get an object of the FilterRegistration class.
What could be the cause of this problem? What can you advise to solve it?
Thank you.

Answer the question

In order to leave comments, you need to log in

1 answer(s)
A
Alexiuscrow, 2016-08-30
@Alexiuscrow

Solution
Web.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

    <display-name>REST API App</display-name>

    <listener>
        <listener-class>com.example.core.JerseyGuiceServletContextListener</listener-class>
    </listener>

    <filter>
        <filter-name>guiceFilter</filter-name>
        <filter-class>com.google.inject.servlet.GuiceFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>guiceFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <filter>
        <filter-name>jerseyFilter</filter-name>
        <filter-class>org.glassfish.jersey.servlet.ServletContainer</filter-class>
        <init-param>
            <param-name>javax.ws.rs.Application</param-name>
            <param-value>com.example.core.JerseyConfiguration</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>jerseyFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

JerseyServletModuleConfig class:
package com.example.core;

import com.google.inject.Scopes;
import com.google.inject.servlet.ServletModule;
import com.example.ws.HeyResource;
import org.glassfish.jersey.servlet.ServletContainer;

import java.util.Map;
import java.util.TreeMap;

class JerseyServletModuleConfig extends ServletModule {
    @Override
    protected void configureServlets() {
        bind(HeyResource.class).in(Scopes.SINGLETON);
    }
}

Didn't find what you were looking for?

Ask your question

Ask a Question

731 491 924 answers to any question