Question

我在Tomcat v7.0服务器上运行了一个jsf休眠应用程序，我的问题是该服务永远不会注入处理程序，因此我在TestWELDHandler的getService（）。testMethod1（）处获得了一个Nullpointer。

也许有人知道为什么？我正在尝试添加此处描述的所有内容 https://docs.jboss.org/weld/reference/latest/en-US/html/environments.html

所以我的处理程序看起来像

import javax.annotation.PostConstruct;
import javax.inject.Inject;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class TestWELDHandler {

  private static final Logger log = LoggerFactory.getLogger(TestWELDHandler.class);

  @Inject
  private TestWELDService     service;

  public TestWELDHandler() {
    log.info("TestWELDHandler");
  }

  /**
   * The method annotated with PostConstruct MUST be invoked even if the class does not request any
   * resources to be injected.
   */
  @PostConstruct
  void init() {
    log.info("init service null " + (this.service == null));
  }

  public String testMethod1FromService() {
    log.info("testMethod1FromService service null " + (this.service == null));
    return getService().testMethod1();
  }

  public TestWELDService getService() {
    return this.service;
  }

  public void setService(TestWELDService service) {
    this.service = service;
  }

}

我有一个界面

public interface TestWELDService {
  String testMethod1();
}

和实现

import javax.enterprise.inject.Default;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@Default
public class TestWELDServiceImpl implements TestWELDService {

  private static final Logger log = LoggerFactory.getLogger(TestWELDServiceImpl.class);

  public TestWELDServiceImpl() {
    log.info("TestWELDServiceImpl");
  }

  @Override
  public String testMethod1() {
    log.info("TestWELDServiceImpl.testMethod1");
    return "TestWELDServiceImpl.testMethod1";
  }

}

我添加了

<resource-env-ref>
   <resource-env-ref-name>BeanManager</resource-env-ref-name>
   <resource-env-ref-type>
      javax.enterprise.inject.spi.BeanManager
   </resource-env-ref-type>
</resource-env-ref>

到我的/webapp/WEB-INF/web.xml

和

<Resource name="BeanManager" auth="Container"
        type="javax.enterprise.inject.spi.BeanManager" factory="org.jboss.weld.resources.ManagerObjectFactory" />

/webapp/META-INF/context.xml中的context元素

我还必须添加的内容

-Dcom.sun.jersey.server.impl.cdi.lookupExtensionInBeanManager=true

摆脱Tomcat的VM参数

avax.naming.NameNotFoundException: Name [CDIExtension] is not bound in this Context. Unable to find [CDIExtension].

用于TestWELDHandler的bean配置如下：

<managed-bean>
        <managed-bean-name>testWELDHandler</managed-bean-name>
        <managed-bean-class>com.prosol.faces.handler.weldtest.TestWELDHandler</managed-bean-class>
        <managed-bean-scope>session</managed-bean-scope>
    </managed-bean>

WELD未注入对象

0 个答案: