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我在使用 Arquillian 测试 JavaEE8 应用程序时遇到了这个问题： WELD-001408: Unsatisfied dependencies for type Logger with qualifiers @Default at injection point [BackedAnnotatedField] @Inject private academy.learnprogramming.services.TodoService.LOG

我对注入的 EntityManager 有同样的错误

这些是我的课：

TodoService.class （我必须测试的类）

package academy.learnprogramming.services;

import academy.learnprogramming.entities.Todo;
import org.apache.log4j.Logger;

import javax.annotation.PostConstruct;
import javax.inject.Inject;
import javax.persistence.EntityManager;
import javax.transaction.Transactional;
import java.util.List;

@Transactional
public class TodoService {

    @Inject
    private Logger LOG = Logger.getLogger(TodoService.class);

    @Inject
    EntityManager entityManager;

    public Todo createTodo(Todo todo) {
        //Persist into db
        entityManager.persist(todo);
        return todo;
    }

    public Todo updateTodo(Todo todo) {
        entityManager.merge(todo);
        return todo;
    }

    @PostConstruct
    private void init() {
        LOG.info("Bean TodoService created");
    }

    public Todo findTodoById(Long id) {
        return entityManager.find(Todo.class, id);
    }

    public List<Todo> getTodos(){
        return entityManager.createQuery("SELECT t from Todo t", Todo.class).getResultList();
    }

}

TodoServiceTest.class（用于测试的类）

package academy.learnprogramming.services;

import academy.learnprogramming.config.Producers;
import academy.learnprogramming.entities.Todo;
import org.jboss.arquillian.container.test.api.Deployment;
import org.jboss.arquillian.junit.Arquillian;
import org.jboss.shrinkwrap.api.ShrinkWrap;
import org.jboss.shrinkwrap.api.asset.EmptyAsset;
import org.jboss.shrinkwrap.api.spec.JavaArchive;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

import static org.junit.Assert.*;

@RunWith(Arquillian.class)
public class TodoServiceTest {

    @Deployment
    public static JavaArchive createDeployment() {
        return ShrinkWrap.create(JavaArchive.class)
                .addClasses(TodoService.class, Todo.class, Producers.class)
                .addAsResource("persistence.xml", "META-INF/persistence.xml")
                .addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml");
    }

    @Before
    public void setUp() throws Exception {
    }

    @After
    public void tearDown() throws Exception {
    }

    @Test
    public void createTodo() {
    }

    @Test
    public void updateTodo() {
    }

    @Test
    public void findTodoById() {
    }

    @Test
    public void getTodos() {
    }
}

Producers.class（用于将第 3 方库添加到 CDI 的类）

package academy.learnprogramming.config;


import org.apache.log4j.Logger;
import org.dozer.DozerBeanMapper;

import javax.enterprise.context.RequestScoped;
import javax.enterprise.inject.Produces;
import javax.enterprise.inject.spi.InjectionPoint;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import java.util.ArrayList;
import java.util.List;

//If producers becomes complitated, split it in many classes, each for a single producer
public class Producers {

    @Produces
    @PersistenceContext
    EntityManager entityManager;

    @Produces
    public Logger produceLogger(InjectionPoint injectionPoint) {
        return Logger.getLogger(injectionPoint.getMember().getDeclaringClass().getName());
    }

    //Auto mapper
    @Produces
    public DozerBeanMapper produceDozenBeanMapper() {
        DozerBeanMapper mapper = new DozerBeanMapper();
        List<String> mappingFiles = new ArrayList();
        mappingFiles.add("dozerJdk8Converters.xml");
        mapper.setMappingFiles(mappingFiles);
        return mapper;
    }
}

环顾四周，我了解到可能的问题可能是：

  1. 如果你不放 bean-discovery-mode="all"，beans.xml 可能会出现问题，因为它不会扫描未注释的 bean，但我的 beans.xml 文件有 bean-discovery-mode="all"
  2. 注入 TodoService 类的 Logger 和 EntityManager 不能有 Producer，但我有 Producers 类
  3. 人们在导入 TodoService、TodoServiceTest 和 Producers 类的 Logger 类时可能会出错，例如在一个类中导入 org.apache.log4j.Logger，在另一个类中导入 java util.logging.Logger，但我有所有类都导入org.apache.log4j.Logger

如果我删除 @Inject 注释并使用类中的记录器，它可以工作。

我还能尝试什么？非常感谢您的宝贵时间。

4

1 回答 1

0

如果您使用 WAR 文件，请尝试使用 WebArchive

 @Deployment
    public static WebArchive createDeployment() {
        return ShrinkWrap.create(WebArchive.class)
                .addClasses(TodoService.class, Todo.class, Producers.class)
                .addAsResource("persistence.xml", "META-INF/persistence.xml")
                .addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml");
}

删除Logger.getLogger(TodoService.class);将实例化记录器的生产者。

@RequestScoped
@Transactional
public class TodoService {

    @Inject
    private Logger log;

    @Inject
    EntityManager entityManager;

    public Todo createTodo(Todo todo) {
        //Persist into db
        entityManager.persist(todo);
        return todo;
    }

    public Todo updateTodo(Todo todo) {
        entityManager.merge(todo);
        return todo;
    }

    @PostConstruct
    private void init() {
        log.info("Bean TodoService created");
    }

    public Todo findTodoById(Long id) {
        return entityManager.find(Todo.class, id);
    }

    public List<Todo> getTodos(){
        return entityManager.createQuery("SELECT t from Todo t", Todo.class).getResultList();
    }
于 2020-08-19T19:21:00.480 回答