冬眠+；JPA不会在oracle中自动创建表

我在spring4 hibernate EntityManager 4的项目中工作。我正在尝试从hibernate自动在oracle数据库中创建表

但是表并没有像预期的那样以db的形式生成

这是我的persist的pom.xml文件

<?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/maven-v4_0_0.xsd">
    <parent>
        <groupId>com.spectra.lev</groupId>
        <artifactId>myca</artifactId>
        <version>0.1-SNAPSHOT</version>
    </parent>
    <artifactId>myca_persist</artifactId>
    <packaging>jar</packaging>
    <url>http://maven.apache.org</url>
    <modelVersion>4.0.0</modelVersion>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.version>1.7</java.version>
        <skipTests>true</skipTests>
        <hibernate.version>4.3.11.Final</hibernate.version>
        <spring.version>4.1.4.RELEASE</spring.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>${hibernate.version}</version>
        </dependency>
        <dependency>
            <groupId>com.oracle</groupId>
            <artifactId>ojdbc6</artifactId>
            <version>11.2.0.2.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>javax.transaction</groupId>
            <artifactId>jta</artifactId>
            <version>1.1</version>
        </dependency>
    </dependencies>
</project>

我已将

hbm2ddl.auto

值更改为

update

。但没有结果

---

有人能帮我吗，我缺少什么。

我可以看到您没有在persistence.xml文件中映射实体类。尝试将这些文件包括在persistence.xml文件中。大概是这样的：

<persistence-unit name="my-pu">
 <description>My Persistence Unit</description>
 <provider>com.objectdb.jpa.Provider</provider>
 <mapping-file>META-INF/mappingFile.xml</mapping-file>
 <jar-file>packedEntity.jar</jar-file>
 <class>sample.MyEntity1</class>
 <class>sample.MyEntity2</class>
 <properties>
   <property name="javax.persistence.jdbc.url"
             value="objectdb://localhost/my.odb"/>
   <property name="javax.persistence.jdbc.user" value="admin"/>
   <property name="javax.persistence.jdbc.password" value="admin"/>
 </properties>
   </persistence-unit>

我的持久性单位
com.objectdb.jpa.Provider
META-INF/mappingFile.xml
packedEntity.jar
示例1.MyEntity1
示例1.MyEntity2

我可以看到您没有在persistence.xml文件中映射实体类。尝试将这些文件包括在persistence.xml文件中。大概是这样的：

<persistence-unit name="my-pu">
 <description>My Persistence Unit</description>
 <provider>com.objectdb.jpa.Provider</provider>
 <mapping-file>META-INF/mappingFile.xml</mapping-file>
 <jar-file>packedEntity.jar</jar-file>
 <class>sample.MyEntity1</class>
 <class>sample.MyEntity2</class>
 <properties>
   <property name="javax.persistence.jdbc.url"
             value="objectdb://localhost/my.odb"/>
   <property name="javax.persistence.jdbc.user" value="admin"/>
   <property name="javax.persistence.jdbc.password" value="admin"/>
 </properties>
   </persistence-unit>

我的持久性单位
com.objectdb.jpa.Provider
META-INF/mappingFile.xml
packedEntity.jar
示例1.MyEntity1
示例1.MyEntity2

您应该在

persistence.xml中包含以下内容，以便根据Hibernate模型自动生成表

<property name="hibernate.hbm2ddl.auto" value="update" />                        



有关更多信息，请查看

您应该在
persistence.xml中包含以下内容，以便根据Hibernate模型自动生成表

<property name="hibernate.hbm2ddl.auto" value="update" />                        



有关更多信息，请查看



    <properties>
        <property name="hibernate.connection.url" value="jdbc:mysql://localhost/DB" />
        <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
        <property name="hibernate.connection.username" value="username" />
        <property name="hibernate.connection.password" value="password" />
        <property name="hibernate.connection.autoReconnect" value="true" /> 
        <property name="hibernate.connection.autoReconnectForPools" value="true" />
        <property name="hibernate.connection.is-connection-validation-required" value="true" />
        <property name="hibernate.connection.testOnBorrow" value="true" />
        <property name="hibernate.connection.validationQuery" value="SELECT 1" />
        <property name="hibernate.archive.autodetection" value="class" />
        <property name="hibernate.show_sql" value="false" />
        <property name="hibernate.format_sql" value="true" />
        <property name="hibernate.hbm2ddl.auto" value="update" />
    </properties>