无法从独立客户端调用 EJB

编程问答 2022-06-02

问题描述

我正在使用带有 Glassfish 服务器的 EJB 3.2 进行个人项目。我成功部署了一个 EAR，其中包含一个简单的 EJB 模块和一个无状态 EJB 和一些实体类，但是当我尝试从独立客户端调用无状态 EJB 时，我收到以下错误：

线程“main”中的异常javax.naming.NameNotFoundException： java：全局

我尝试了论坛中的一些建议，但似乎没有任何效果。

Here is the project file structure

EJB 模块 pom.xml 文件是这样的：

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <artifactId>DataManager</artifactId>
        <groupId>eu.tristan-schweizer</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <groupId>eu.tristan-schweizer</groupId>
    <artifactId>DataManager-ejb</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>ejb</packaging>
    <name>DataManager-ejb</name>
    <url>http://www.example.com</url> <!-- FIXME -->
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>
    <dependencies>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>8.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <version>5.6.2</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-params</artifactId>
            <version>5.6.2</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <version>5.6.2</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-ejb-plugin</artifactId>
                <version>3.1.0</version>
                <configuration>
                    <ejbVersion>3.2</ejbVersion>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-checkstyle-plugin</artifactId>
                <version>3.1.1</version>
            </plugin>
        </plugins>
  </build>
</project>

EAR pom.xml：

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <artifactId>DataManager</artifactId>
        <groupId>eu.tristan-schweizer</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <groupId>eu.tristan-schweizer</groupId>
    <artifactId>DataManager-ear</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>ear</packaging>
    <name>DataManager-ear</name>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>
    <dependencies>
        <dependency>
            <groupId>${project.groupId}</groupId>
            <artifactId>${project.parent.artifactId}-ejb</artifactId>
            <version>${project.version}</version>
            <type>ejb</type>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-ear-plugin</artifactId>
                <version>2.10.1</version>
                <configuration>
                    <version>7</version>
                    <modules>
                        <ejbModule>
                            <groupId>${project.groupId}</groupId>
                            <artifactId>${project.parent.artifactId}-ejb</artifactId>
                        </ejbModule>
                    </modules>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

EAR 应用程序.xml：

<?xml version="1.0" encoding="UTF-8"?>
<application 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/application_8.xsd" version="8">
    <display-name>DataManager</display-name>
    <module>
        <ejb>DataManager-ejb-1.0-SNAPSHOT.jar</ejb>
    </module>
</application>

EAR glassfish-resources.xml：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE resources PUBLIC "-//GlassFish.org//DTD GlassFish Application Server 3.1 Resource DeFinitions//EN" "http://glassfish.org/dtds/glassfish-resources_1_5.dtd">
<resources>
    <jdbc-connection-pool allow-non-component-callers="false" associate-with-thread="false" connection-creation-retry-attempts="0" connection-creation-retry-interval-in-seconds="10" connection-leak-reclaim="false" connection-leak-timeout-in-seconds="0" connection-validation-method="auto-commit" datasource-classname="org.apache.derby.jdbc.ClientDataSource" fail-all-connections="false" idle-timeout-in-seconds="300" is-connection-validation-required="false" is-isolation-level-guaranteed="true" lazy-connection-association="false" lazy-connection-enlistment="false" match-connections="false" max-connection-usage-count="0" max-pool-size="32" max-wait-time-in-millis="60000" name="derby_net_datamanager_dmrootPool" non-transactional-connections="false" pool-resize-quantity="2" res-type="javax.sql.DataSource" statement-timeout-in-seconds="-1" steady-pool-size="8" validate-atmost-once-period-in-seconds="0" wrap-jdbc-objects="false">
        <property name="serverName" value="localhost"/>
        <property name="portNumber" value="1527"/>
        <property name="databaseName" value="datamanager"/>
        <property name="User" value="dmroot"/>
        <property name="Password" value="root"/>
        <property name="URL" value="jdbc:derby://localhost:1527/datamanager"/>
        <property name="driverClass" value="org.apache.derby.jdbc.ClientDriver"/>
    </jdbc-connection-pool>
    <jdbc-resource enabled="true" jndi-name="java:app/datamanager" object-type="user" pool-name="derby_net_datamanager_dmrootPool"/>
</resources>

Glassfish 服务器 as shown here 上似乎一切正常。

现在独立客户端如下所示：

/*
 * copyright 2019 tristan-schweizer.eu.
 *
 * Licensed under the Apache License,Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,software
 * distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package eu.tristan_schweizer.datamanager.wdi;

import eu.tristan_schweizer.datamanager.ejb.session.PositorManager;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;

public final class Importer
{
    
    private Importer ()
    {
        super();
    }
    
    public static void main (final String[] args) throws NamingException
    {
        Context ctxt = new InitialContext();
        PositorManager pm = (PositorManager) ctxt.lookup("java:global/DataManager-ear-1.0-SNAPSHOT/DataManager-ejb-1.0-SNAPSHOT.jar/PositorManager");
        pm.register((short) 0);
    }
    
}

我尝试为 lookup() 函数使用不同的字符串值（例如，添加“#”或“!”后跟类全名或仅使用类全名）。

我还将 gf-client 工件添加到我的 maven 依赖项中（我尝试了很多版本）。目前，客户端的 pom.xml 是这样的：

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>eu.tristan-schweizer</groupId>
        <artifactId>DataManager</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <artifactId>DataManager-wdi</artifactId>
    <packaging>jar</packaging>
    <dependencies>
        <dependency>
            <groupId>${project.groupId}</groupId>
            <artifactId>DataManager-ejb</artifactId>
            <version>${project.version}</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.common</groupId>
            <artifactId>glassfish-naming</artifactId>
            <version>10.0-b28</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.main.appclient</groupId>
            <artifactId>gf-client</artifactId>
            <version>6.0.0-RC2</version>
        </dependency>
    </dependencies>
    <properties>
        <maven.compiler.source>14</maven.compiler.source>
        <maven.compiler.target>14</maven.compiler.target>
    </properties>
</project>

这是在 Glassfish 上部署 EAR 时的日志：

GUI 部署：uploadToTempfile]]
uploadFileName=DataManager-ear-1.0-SNAPSHOT.ear]] ================== availabilityEnabled 已跳过 ]] 访问未访问的引用]]
访问未访问的参考文献]]
eu.tristan_schweizer.datamanager.ejb.model.ItemUriAnnex 实际上得到了 变形]]
eu.tristan_schweizer.datamanager.ejb.model.ItemUriAnnexId 实际上得到了 转换]] eu.tristan_schweizer.datamanager.ejb.model.Positor 真的变了]]
eu.tristan_schweizer.datamanager.ejb.model.ItemUriPosit 实际上得到了 转换]] eu.tristan_schweizer.datamanager.ejb.model.Metadata 真的变了]]
eu.tristan_schweizer.datamanager.ejb.model.Item 实际上得到了 转换]] EclipseLink，版本：Eclipse Persistence Services - 2.7.4.v20190115-ad5b7c6b2a]] /file:/C:/Program Files/Glassfish/glassfish5/glassfish/domains/domain1/applications/DataManager-ear-1.0-SNAPSHOT/DataManager-ejb-1.0-SNAPSHOT_jar/_DataManager-PU 登录成功]] EJB PositorManager 的可移植 JNDI 名称： [java:global/DataManager-ear-1.0-SNAPSHOT/DataManager-ejb-1.0-SNAPSHOT/PositorManager,java:global/DataManager-ear-1.0-SNAPSHOT/DataManager-ejb-1.0-SNAPSHOT/PositorManager!eu.tristan_schweizer.datamanager.ejb.session.PositorManager]]] WELD-000411：观察者方法 [BackedAnnotatedMethod] org.glassfish.sse.impl.ServerSentEventCdiExtension.processAnnotatedType(@Observes ProcessAnnotatedType,BeanManager) 接收所有事件 注释类型。考虑使用@WithAnnotations 或 具有边界的泛型类型。]] WELD-000411：观察者方法 [BackedAnnotatedMethod] public org.glassfish.jms.injection.JMSCDIExtension.processAnnotatedType(@Observes ProcessAnnotatedType) 接收所有带注释类型的事件。 考虑使用@WithAnnotations 或泛型类型限制事件 ]] WELD-000411：观察者方法 [BackedAnnotatedMethod] 上市 org.hibernate.validator.cdi.ValidationExtension.processAnnotatedType(@Observes ProcessAnnotatedType) 接收所有带注释类型的事件。 考虑使用@WithAnnotations 或泛型类型限制事件 ]] WELD-000411：观察者方法 [BackedAnnotatedMethod] 私人的 org.glassfish.jersey.ext.cdi1x.internal.CdiComponentProvider.processAnnotatedType(@Observes ProcessAnnotatedType) 接收所有带注释类型的事件。 考虑使用@WithAnnotations 或泛型类型限制事件 ]] WELD-000146： BeforeBeandiscovery.addAnnotatedType(AnnotatedType) 用于类 CDI 已弃用 com.sun.faces.flow.FlowdiscoveryCDIHelper 1.1!]] WELD-000146：BeforeBeandiscovery.addAnnotatedType(AnnotatedType) 用于类 org.glassfish.jersey.ext.cdi1x.transaction.internal.WebAppExceptionHolder 已从 CDI 1.1 中弃用！]] WELD-000146： BeforeBeandiscovery.addAnnotatedType(AnnotatedType) 用于类 org.glassfish.jersey.ext.cdi1x.transaction.internal.WebAppExceptionInterceptor 已从 CDI 1.1 中弃用！]] WELD-000146： BeforeBeandiscovery.addAnnotatedType(AnnotatedType) 用于类 org.glassfish.jersey.ext.cdi1x.transaction.internal.TransactionalExceptionMapper 已从 CDI 1.1 中弃用！]] WELD-000146： BeforeBeandiscovery.addAnnotatedType(AnnotatedType) 用于类 org.glassfish.jersey.ext.cdi1x.servlet.internal.CdiExternalRequestScope 已从 CDI 1.1 中弃用！]] WELD-000146： BeforeBeandiscovery.addAnnotatedType(AnnotatedType) 用于类 CDI 不推荐使用 com.ibm.jbatch.container.cdi.BatchProducerBean 1.1!]] WELD-000146：BeforeBeandiscovery.addAnnotatedType(AnnotatedType) 用于类 org.glassfish.cdi.transaction.TransactionalInterceptorMandatory 是 从 CDI 1.1 弃用！]] WELD-000146： BeforeBeandiscovery.addAnnotatedType(AnnotatedType) 用于类 org.glassfish.cdi.transaction.TransactionalInterceptorNever 是 从 CDI 1.1 弃用！]] WELD-000146： BeforeBeandiscovery.addAnnotatedType(AnnotatedType) 用于类 org.glassfish.cdi.transaction.TransactionalInterceptorNotSupported 是 从 CDI 1.1 弃用！]] WELD-000146： BeforeBeandiscovery.addAnnotatedType(AnnotatedType) 用于类 org.glassfish.cdi.transaction.TransactionalInterceptorrequired 是 从 CDI 1.1 弃用！]] WELD-000146： BeforeBeandiscovery.addAnnotatedType(AnnotatedType) 用于类 org.glassfish.cdi.transaction.TransactionalInterceptorRequiresNew 是 从 CDI 1.1 弃用！]] WELD-000146： BeforeBeandiscovery.addAnnotatedType(AnnotatedType) 用于类 org.glassfish.cdi.transaction.TransactionalInterceptorSupports 是 从 CDI 1.1 弃用！]] WELD-000146： BeforeBeandiscovery.addAnnotatedType(AnnotatedType>) 用于类 org.glassfish.jersey.ext.cdi1x.internal.CdiComponentProvider$JaxRsParamProducer 已从 CDI 1.1 中弃用！]] DataManager-ear-1.0-SNAPSHOT 是 在 560 毫秒内成功部署。]] 删除文件 上传到临时目录]]

注意事项：

  • 没有 ejb-jar.xml（我发现它对于 EJB 3.x 是可选的）
  • 没有@Local 和@Remote 接口（从 EJB 3.1 开始，@Stateless 就足够了）：我尝试添加它们但没有结果
  • 我省略了主项目 pom.xml

解决方法

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ejb-3.2glassfishjavajavamaven