使用 JPA、Maven 和 Tomcat，但得到 java.lang.NoClassDefFoundError: javax/persistence/Persistence
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Using JPA, Maven and Tomcat, but getting java.lang.NoClassDefFoundError: javax/persistence/Persistence
提问by eduardohl
But looking at other cases I tried to put these dependencies to Maven:
但是在其他情况下，我尝试将这些依赖项放到 Maven 中：
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>6.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.21</version>
</dependency>
</dependencies>
I'm trying to run as directly from Eclipse but I keep getting the error: java.lang.NoClassDefFoundError: javax/persistence/Persistence
我试图直接从 Eclipse 运行，但我不断收到错误消息：java.lang.NoClassDefFoundError: javax/persistence/Persistence
I don't get it because it should be provided by the javaee-api dependency.
我不明白，因为它应该由 javaee-api 依赖项提供。
Regards, Eduardo
问候， 爱德华多
UPDATED
更新
Now I tried to use these in my POM:
现在我尝试在我的 POM 中使用这些：
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.1.4.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.0-api</artifactId>
<version>1.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.1.4.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.java-persistence</groupId>
<artifactId>jpa-api</artifactId>
<version>2.0.Beta-20090815</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.21</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-servlet-api</artifactId>
<version>7.0.26</version>
<scope>provided</scope>
</dependency>
</dependencies>
Once Tomcat wouldn't provide me any of the functionality. But I'm still getting the same error, could it be something related to the dependencies scope? Also, my imports are like:
一旦Tomcat不会为我提供任何功能。但是我仍然遇到同样的错误，这可能与依赖范围有关吗？此外，我的进口是这样的：
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Persistence;
How do I tell my container to use the Hibernate implementation?
如何告诉我的容器使用 Hibernate 实现？
回答by eduardohl
Finally was able to fix the issue. This is the correct POM for Hibernate 4. You should not use hibernate annotations as a dependency starting from 3.5
终于能够解决这个问题。这是 Hibernate 4 的正确 POM。从 3.5 开始，您不应使用 Hibernate 注释作为依赖项
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.1.4.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.0-api</artifactId>
<version>1.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.1.4.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.21</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-jdk14</artifactId>
<version>1.5.8</version>
</dependency>
</dependencies>
