Java EE + Wildfly：无法启动服务 jboss.persistenceunit
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【中文标题】Java EE + Wildfly：无法启动服务 jboss.persistenceunit【英文标题】：Java EE + Wildfly: Failed to start service jboss.persistenceunit 【发布时间】：2018-04-02 17:23:51 【问题描述】：我正在尝试设置一个 maven 项目来使用 Wildfly 和 mysql，但我收到了这个错误，我很确定这是一个配置问题。我使用的是 Wildfly，所以我没有任何休眠配置文件（这与我找到的所有解决方案有关）。这就是我得到的。我刚开始学习如何处理 RIA，所以任何想法都将不胜感激。
问题主要是错误日志和代码，因此感谢任何愿意提供帮助的人的耐心。
我的控制台错误：
17:53:34,909 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 62) MSC000001: Failed to start service jboss.persistenceunit."RPGo.war#RPGo": org.jboss.msc.service.StartException in service jboss.persistenceunit."RPGo.war#RPGo": org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1$1.run(PersistenceUnitServiceImpl.java:195)
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1$1.run(PersistenceUnitServiceImpl.java:125)
at org.wildfly.security.manager.WildFlySecurityManager.doChecked(WildFlySecurityManager.java:640)
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1.run(PersistenceUnitServiceImpl.java:209)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
at org.jboss.threads.JBossThread.run(JBossThread.java:320)
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:264)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:228)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:207)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:207)
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352)
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:848)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:875)
at org.jboss.as.jpa.hibernate5.TwoPhaseBootstrapImpl.build(TwoPhaseBootstrapImpl.java:44)
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1$1.run(PersistenceUnitServiceImpl.java:167)
... 7 more
Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100)
at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:254)
... 19 more
17:53:34,909 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("deploy") failed - address: ([("deployment" => "RPGo.war")]) - failure description: "WFLYCTL0080: Failed services" => "jboss.persistenceunit.\"RPGo.war#RPGo\"" => "org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set"
17:53:34,940 INFO [org.jboss.as.server] (ServerService Thread Pool -- 37) WFLYSRV0010: Deployed "RPGo.war" (runtime-name : "RPGo.war")
17:53:34,940 INFO [org.jboss.as.controller] (Controller Boot Thread) WFLYCTL0183: Service status report
WFLYCTL0186: Services which failed to start: service jboss.persistenceunit."RPGo.war#RPGo": org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
我的persistance.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="RPGo">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>java:jboss/datasources/RPGo</jta-data-source>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="hibernate.hbm2ddl.auto" value="update" />
</properties>
</persistence-unit>
</persistence>
standalone.xml, urn:jboss:domain:datasources 子系统
<subsystem xmlns="urn:jboss:domain:datasources:5.0">
<datasources>
<datasource jndi-name="java:jboss/datasources/ExampleDS" pool-name="ExampleDS" enabled="true" use-java-context="true">
<connection-url>jdbc:h2:mem:test;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE</connection-url>
<driver>h2</driver>
<security>
<user-name>sa</user-name>
<password>sa</password>
</security>
</datasource>
<datasource jta="true" jndi-name="java:jboss/datasources/RPGo" pool-name="RPGoPool" enabled="true" use-java-context="true">
<connection-url>jdbc:mysql://localhost:3306/rpgo</connection-url>
<driver>mysql</driver>
<security>
<user-name>master</user-name>
<password>master</password>
</security>
</datasource>
<drivers>
<driver name="h2" module="com.h2database.h2">
<xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class>
</driver>
<driver name="mysql" module="com.mysql">
<driver-class>com.mysql.jdbc.Driver</driver-class>
</driver>
</drivers>
</datasources>
</subsystem>
pom.xml 依赖：
<!-- JSF -->
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-api</artifactId>
<version>2.2.13</version>
</dependency>
<!-- JSF -->
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-impl</artifactId>
<version>2.2.13</version>
</dependency>
<!-- PrimeFaces -->
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>5.3</version>
</dependency>
<!-- CDI -->
<dependency>
<groupId>javax.enterprise</groupId>
<artifactId>cdi-api</artifactId>
<version>1.2</version>
<scope>provided</scope>
</dependency>
<!-- Métodos uteis para manipulação de String, métodos e etc -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<!-- PROVIDER JPA(HIBERNATE) -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.3.0.Final</version>
</dependency>
<!-- DEPENDENCIA MYSQL -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.44</version>
</dependency>
<!-- Manipulação de XML -->
<dependency>
<groupId>jdom</groupId>
<artifactId>jdom</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>br.ufes.inf.nemo</groupId>
<artifactId>jbutler-wp</artifactId>
<version>1.2.4</version>
</dependency>
<dependency>
<groupId>org.primefaces.themes</groupId>
<artifactId>bootstrap</artifactId>
<version>1.0.10</version>
</dependency>
【问题讨论】：
【参考方案1】：你只是有一点依赖污染。
如下修改你的依赖，相信你会跑起来的：
<!-- WildFly implements everything in this jar -->
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
<scope>provided</scope>
</dependency>
<!-- PrimeFaces -->
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>5.3</version>
</dependency>
<!-- Métodos uteis para manipulação de String, métodos e etc -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<!-- Manipulação de XML -->
<dependency>
<groupId>jdom</groupId>
<artifactId>jdom</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>br.ufes.inf.nemo</groupId>
<artifactId>jbutler-wp</artifactId>
<version>1.2.4</version>
</dependency>
<dependency>
<groupId>org.primefaces.themes</groupId>
<artifactId>bootstrap</artifactId>
<version>1.0.10</version>
</dependency>
【讨论】：
去找我的教授讨论这个问题，他给了我完全相同的答案，我重复导入了几个依赖项，非常感谢@Steve C，让这个作为未来搜索的参考。 【参考方案2】：将<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> 添加到persistence.xml 中。
您还应该从在 Hibernate 4.3 中弃用的 org.hibernate.ejb.HibernatePersistence 迁移到 org.hibernate.jpa.HibernatePersistenceProvider
【讨论】：
hibernate.dialect 在正确配置的 JPA 2.x 应用程序中是多余的以上是关于Java EE + Wildfly：无法启动服务 jboss.persistenceunit的主要内容，如果未能解决你的问题，请参考以下文章