Guice nullpointer exception in instanceed instance

Question

Я использую Guice в Jersey2 для DI (я хочу использовать его, чтобы использовать Google App Engine -> не работая с HK2).

Мой ApplicationResource:

public class ApplicationResource extends ResourceConfig { 

    private static final Logger LOGGER = null; 

    public ApplicationResource() { 
     System.out.println("Application startup"); 
     // Register resources and providers using package-scanning. 
     packages("com.crawler.c_api"); 

     // Register my custom provider - not needed if it's in my.package. 
     register(ResponseCorsFilter.class); 

     Injector createInjector = Guice.createInjector(new AbstractModule(){ 

      @Override 
      protected void configure() { 
       bind(NLPProvider.class).toInstance(new NLPProvider()); 
      } 

     }); 


     // Register an instance of LoggingFilter. 
     register(new LoggingFilter(LOGGER, true)); 

     // Enable Tracing support. 
     property(ServerProperties.TRACING, "ALL");   

     EncodingFilter.enableFor(this, GZipEncoder.class); 
    } 
} 

NLPProvider загружает кучу файлов - и файлы загружены правильно. Но когда я пытаюсь ввести экземпляр NLPProvider, он остается равным нулю.

CrwalerResource:

@Path("/crawler") 
public class CrawlerResource { 

    @Inject 
    NLPProvider pipeline; 

    @GET 
    @Produces(MediaType.APPLICATION_JSON + ";charset=utf-8") 
    public Response crawlUrl(@BeanParam CrawlerQueryParam queryParameters) { 
     CrawlerService crawl = new CrawlerService(); 
     return Response.status(200).entity(crawl.extractFromUrl(queryParameters, pipeline)).build(); 
    } 

} 

Что я делаю неправильно, учитывая, что я использовал HK2 раньше?

---

Мой pom.xml - может быть, вопрос идет отсюда:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> 

    <modelVersion>4.0.0</modelVersion> 

    <groupId>com.crawler</groupId> 
    <artifactId>C_API</artifactId> 
    <packaging>war</packaging> 
    <version>1.0-SNAPSHOT</version> 
    <name>C_API</name> 

    <build> 
     <finalName>C_API</finalName> 
     <plugins> 
      <plugin> 
       <groupId>org.apache.maven.plugins</groupId> 
       <artifactId>maven-compiler-plugin</artifactId> 
       <version>3.2</version> 
       <inherited>true</inherited> 
       <configuration> 
        <source>1.7</source> 
        <target>1.7</target> 
       </configuration> 
      </plugin> 
     </plugins> 
    </build> 

    <dependencyManagement> 
     <dependencies> 
      <dependency> 
       <groupId>org.glassfish.jersey</groupId> 
       <artifactId>jersey-bom</artifactId> 
       <version>${jersey.version}</version> 
       <type>pom</type> 
       <scope>import</scope> 
      </dependency> 
     </dependencies> 
    </dependencyManagement> 
    <dependencies> 
     <dependency> 
      <groupId>org.glassfish.jersey.containers</groupId> 
      <artifactId>jersey-container-servlet</artifactId> 
      <!-- use the following artifactId if you don't need servlet 2.x compatibility --> 
      <!-- artifactId>jersey-container-servlet</artifactId --> 
     </dependency> 

     <dependency> 
      <groupId>org.glassfish.jersey.media</groupId> 
      <artifactId>jersey-media-moxy</artifactId> 
     </dependency> 


     <dependency> 
      <groupId>com.zaxxer</groupId> 
      <artifactId>HikariCP-java6</artifactId> 
      <version>2.2.5</version> 
     </dependency> 
     <dependency> 
      <groupId>mysql</groupId> 
      <artifactId>mysql-connector-java</artifactId> 
      <version>5.1.36</version> 
     </dependency> 
     <dependency> 
      <groupId>commons-codec</groupId> 
      <artifactId>commons-codec</artifactId> 
      <version>1.9</version> 
     </dependency> 
     <dependency> 
      <groupId>org.codehaus.jackson</groupId> 
      <artifactId>jackson-mapper-asl</artifactId> 
      <version>1.9.13</version> 
     </dependency> 
     <dependency> 
      <groupId>org.mindrot</groupId> 
      <artifactId>jbcrypt</artifactId> 
      <version>0.3m</version> 
     </dependency> 
     <dependency> 
      <groupId>net.sf.json-lib</groupId> 
      <artifactId>json-lib</artifactId> 
      <version>2.4</version> 
      <classifier>jdk15</classifier> 
     </dependency> 
     <dependency> 
      <groupId>com.syncthemall</groupId> 
      <artifactId>boilerpipe</artifactId> 
      <version>1.2.1</version> 
     </dependency> 

     <dependency> 
      <groupId>xerces</groupId> 
      <artifactId>xercesImpl</artifactId> 
      <version>2.11.0</version> 
     </dependency> 
     <dependency> 
      <groupId>net.sourceforge.nekohtml</groupId> 
      <artifactId>nekohtml</artifactId> 
      <version>1.9.22</version> 
     </dependency> 

     <dependency> 
      <groupId>org.apache.opennlp</groupId> 
      <artifactId>opennlp-tools</artifactId> 
      <version>1.6.0</version> 
     </dependency> 
     <dependency> 
      <groupId>com.google.guava</groupId> 
      <artifactId>guava</artifactId> 
      <version>14.0.1</version> 
      <type>jar</type> 
     </dependency> 

     <dependency> 
      <groupId>log4j</groupId> 
      <artifactId>log4j</artifactId> 
      <version>1.2.17</version> 
     </dependency> 
     <dependency> 
      <groupId>com.github.mpkorstanje</groupId> 
      <artifactId>simmetrics</artifactId> 
      <version>3.2.1</version> 
     </dependency> 

     <dependency> 
      <groupId>com.cybozu.labs</groupId> 
      <artifactId>langdetect</artifactId> 
      <version>1.1-20120112</version> 
     </dependency> 

     <dependency> 
      <!-- jsoup HTML parser library @ http://jsoup.org/ --> 
      <groupId>org.jsoup</groupId> 
      <artifactId>jsoup</artifactId> 
      <version>1.8.3</version> 
     </dependency> 
     <dependency> 
      <groupId>com.google.inject</groupId> 
      <artifactId>guice</artifactId> 
      <version>3.0</version> 
     </dependency> 



    </dependencies> 
    <properties> 
     <jersey.version>2.21</jersey.version> 
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
    </properties> 
</project> 

Answer 1

Вам нужно будет преодолеть Guice с HK2, как уже упоминалось here.

@Inject 
public ApplicationResource(ServiceLocator locator) { 
    GuiceBridge.getGuiceBridge().initializeGuiceBridge(locator); 
    // add your Guice modules. 
    Injector injector = Guice.createInjector(new GuiceModule()); 
    GuiceIntoHK2Bridge guiceBridge = locator.getService(GuiceIntoHK2Bridge.class); 
    guiceBridge.bridgeGuiceInjector(injector); 
} 

Вы также будете нуждаться в ¯hk2 guice-bridge DEPENDENCY

<dependency> 
    <groupId>org.glassfish.hk2</groupId> 
    <artifactId>guice-bridge</artifactId> 
    <version>2.4.0-b31</version> 
</dependency>