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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:
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}"
}
<?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>
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());
}
}
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);
}
}
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()));
}
}
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)
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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>
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);
}
}
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