用JAX-RS和Glassfish实现CDI和资源注入

Question

<dependencies>
    <!-- Java EE API -->
    <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-api</artifactId>
    </dependency>

    <!-- Jersey CDI support -->
    <dependency>
        <groupId>org.glassfish.jersey.ext.cdi</groupId>
        <artifactId>jersey-cdi1x</artifactId>
    </dependency>

    <dependency>
        <groupId>org.glassfish.jersey.ext.cdi</groupId>
        <artifactId>jersey-cdi1x-ban-custom-hk2-binding</artifactId>
    </dependency>

    <!-- Logging dependencies -->
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
    </dependency>
</dependencies>

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
     version="3.1">

<servlet>
    <servlet-name>Backend</servlet-name>
    <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>

    <!-- Disable Moxy JSON -->
    <init-param>
        <param-name>jersey.config.disableMoxyJson</param-name>
        <param-value>true</param-value>
    </init-param>

    <!-- Register resource classes -->
    <init-param>
        <param-name>jersey.config.server.provider.classnames</param-name>
        <param-value>org.test.Service</param-value>
    </init-param>
</servlet>

<servlet-mapping>
    <servlet-name>Backend</servlet-name>
    <url-pattern>/*</url-pattern>
</servlet-mapping>

</web-app>

<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd"
   version="1.1" bean-discovery-mode="all">
</beans>

service.java：

@Path("/")
@RequestScoped
public class Service {

    @Inject
    private DataProvider dataProvider;

    @Path("test")
    @GET
    @Produces({MediaType.APPLICATION_JSON})
    public Response test(){
        return Response.ok(dataProvider.getArticles()).build();
    }

}

sqlDataProvider.java：

@Default
@ApplicationScoped
@Singleton
@Path("singleton-bean")
public class SQLDataProvider implements DataProvider {

    @Resource(name = "jdbc/db_1")
    private DataSource dataSource;

    private SQLQueryFactory factory;

    @Override
    public List<Article> getArticles() {
        if(factory == null){
            factory = new SQLQueryFactory(new Configuration(new MySQLTemplates()), dataSource);
        }

        QArtikel artikel = QArtikel.artikel;
        List<String> names = factory.select(artikel.artikeltyp).from(artikel).fetch();

        return names.stream().map(Article::new).collect(Collectors.toList());
    }
}

如果在Glassfish服务器中部署此servlet并执行请求，将引发以下异常：

javax.servlet.ServletException: A MultiException has 3 exceptions.  They are:
    1. org.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object available for injection at SystemInjecteeImpl(requiredType=DataProvider,parent=SkiBazaarService,qualifiers={},position=-1,optional=false,self=false,unqualified=null,158365417)
    2. java.lang.IllegalArgumentException: While attempting to resolve the dependencies of org.skiclub.service.SkiBazaarService errors were found
    3. java.lang.IllegalStateException: Unable to perform operation: resolve on org.skiclub.service.SkiBazaarService

private DataProvider dataProvider = new SQLDataProvider();

亲切地问候帕斯卡

Answer 1

请看这个问题：

在glassfish 4中，Recource注入不起作用，而查找起作用

尝试查找资源的其他属性，如上述问题所建议的MappedName。

 @Resource(mappedName = "jdbc/db_1")
 private DataSource dataSource;