Question

我的程序运行得非常好，直到我开始使用持久性和EntityManager @Inject。

抛出了很多错误，但我认为这个错误最多。

它讲述了一个意想不到的元素，但我在网上找不到任何有用的东西。

日志：

Connected to server
[2017-05-16 09:13:17,808] Artifact web-example:war exploded: Artifact is being deployed, please wait...
mei 16, 2017 9:13:18 PM org.apache.tomee.catalina.TomcatWebAppBuilder deployWebApps
INFO: using default host: localhost
mei 16, 2017 9:13:18 PM org.apache.tomee.catalina.TomcatWebAppBuilder init
INFO: ------------------------- localhost -> /
mei 16, 2017 9:13:18 PM org.apache.tomee.catalina.TomEEClassLoaderEnricher validateJarFile
WARNING: jar '/Users/renzo/development/school/dea/spotitube/app/target/web-example-1.0-SNAPSHOT/WEB-INF/lib/hibernate-jpa-2.0-api-1.0.1.Final.jar' contains offending class: javax.persistence.Entity. It will be ignored.
mei 16, 2017 9:13:18 PM org.apache.tomee.catalina.TomEEClassLoaderEnricher validateJarFile
WARNING: jar '/Users/renzo/development/school/dea/spotitube/app/target/web-example-1.0-SNAPSHOT/WEB-INF/lib/jboss-transaction-api_1.1_spec-1.0.1.Final.jar' contains offending class: javax.transaction.Transaction. It will be ignored.
mei 16, 2017 9:13:18 PM org.apache.openejb.config.ConfigurationFactory configureApplication
INFO: Configuring enterprise application: /Users/renzo/development/school/dea/spotitube/app/target/web-example-1.0-SNAPSHOT
mei 16, 2017 9:13:18 PM org.apache.openejb.config.ReadDescriptors deploy
SEVERE: Unable to load Persistence Unit from EAR: /Users/renzo/development/school/dea/spotitube/app/target/web-example-1.0-SNAPSHOT, module: file:/Users/renzo/development/school/dea/spotitube/app/target/web-example-1.0-SNAPSHOT/WEB-INF/classes/. Exception: unexpected element (uri:"http://xmlns.jcp.org/xml/ns/persistence", local:"persistence"). Expected elements are <{http://java.sun.com/xml/ns/persistence}persistence>
javax.xml.bind.UnmarshalException: unexpected element (uri:"http://xmlns.jcp.org/xml/ns/persistence", local:"persistence"). Expected elements are <{http://java.sun.com/xml/ns/persistence}persistence>

/resources/META-INF/persistence.xml

<persistence 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
http://xmlns.jcp.org/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_1.xsd"
             version="2.1">
    <persistence-unit
            name="mysql"
            transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>

        <class>
            nl.han.dea.domain.User
        </class>

        <properties>
            <property name="hibernate.archive.autodetection" value="class"/>
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLInnoDBDialect"/>
            <property name="hibernate.connection.driver_class" value="com.mysql.cj.jdbc.Driver"/>
            <property name="hibernate.connection.url"
                      value="jdbc:mysql://localhost:3306/Spotitube?autoReconnect=true&amp;useSSL=false&amp;serverTimezone=UTC"/>
            <property name="hibernate.connection.username" value="spotitube"/>
            <property name="hibernate.connection.password" value="java"/>
            <property name="hibernate.show_sql" value="true"/>
            <property name="hibernate.flushMode" value="FLUSH_AUTO"/>
            <property name="hibernate.hbm2ddl.auto" value="update"/>
        </properties>

    </persistence-unit>
</persistence>

的pom.xml

<project>
    <modelVersion>4.0.0</modelVersion>
    <groupId>nl.han.dea</groupId>
    <artifactId>web-example</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>web-example</name>

    <dependencies>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>7.0</version>
            <scope>provided</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>6.0.6</version>
            <scope>compile</scope>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>4.2.6.Final</version>
        </dependency>
    </dependencies>

    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <failOnMissingWebXml>false</failOnMissingWebXml>
    </properties>
</project>

Answer 1

问题在日志输出的这一行显而易见：

异常：意外元素（uri：“http://xmlns.jcp.org/xml/ns/persistence”，local：“persistence”）。

预期元素是＆lt; {{{}}}持久性

这告诉我们，它们与JPA版本2.0和2.1不匹配。这种冲突的原因在于您在pom.xml中提到的相当旧的Hibernate版本。

Hibernate 4.2.x仅支持JPA 2.0，而TomEE 7.0.x需要一个JPA 2.1提供程序，因为你在问题中提到了persistence.xml，所以

持久性xmlns =“http://xmlns.jcp.org/xml/ns/persistence” 的xmlns：的xsi = “http://www.w3.org/2001/XMLSchema-instance” 的xsi：的schemaLocation =“http://xmlns.jcp.org/xml/ns/persistence http://java.sun.com/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd http://xmlns.jcp.org/xml/ns/persistence“ 版本= “2.1” ＆GT;

有关JPA支持Hibernate的更多详细信息，请参阅列出这些信息的http://java.sun.com/xml/ns/persistence/persistence_2_1.xsd下载页面。

<强>解决方案

最有可能的是，将Hibernate的版本更改为4.3.x可以解决您遇到的一些问题。以下是相关依赖声明的外观：

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-entitymanager</artifactId>
    <version>4.3.11.Final</version>
</dependency>

如果您想进一步实现应用程序的现代化，请尝试使用Hibernate 5.2.x.对于当前版本，依赖性声明如下所示：

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-entitymanager</artifactId>
    <version>5.2.10.Final</version>
</dependency

希望它有所帮助。

添加 - 亮

如果您想在TomEE＆gt; = 7.0.3设置中使用Hibernate 5.2.x，建议您添加

<property name="tomee.jpa.cdi" value="false" />

到你的persistence.xml，否则容器会在启动时抱怨注射问题。有关详情，请参阅Hibernate ORM以及this post。

此外，将<provider>条目更改为新的/正确的包，如下所示：

<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>

Persistence.xml中的意外元素Entitymanager注入不起作用

1 个答案: