Java Maven/Eclipse：在类路径中找不到任何 META-INF/persistence.xml 文件
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Maven/Eclipse: Could not find any META-INF/persistence.xml file in the classpath
提问by Andrew Martin
I know there are other questions on SO about this issue, but none of the solutions have worked for me. I'm using maven to build a java project in eclipse, and I have my persistence.xml file in the src/main/resource/META_INF folder. But when I try to mvn install, I always get this error:
我知道关于这个问题还有其他问题，但没有一个解决方案对我有用。我正在使用 maven 在 eclipse 中构建一个 java 项目，并且在 src/main/resource/META_INF 文件夹中有我的 persistence.xml 文件。但是当我尝试 mvn install 时，我总是收到这个错误：
No Persistence provider for EntityManager named plasma.persistence
Looking through the console output it appears to be caused by this:
查看控制台输出似乎是由以下原因引起的：
[org.hibernate.jpa.boot.internal.PersistenceXmlParser] - HHH000318: Could not find any META-INF/persistence.xml file in the classpath
Here is my persistence.xml file:
这是我的 persistence.xml 文件：
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="plasma.persistence" transaction-type="RESOURCE_LOCAL">
<properties>
<property name="hibernate.dialect" value="org.hibernate.spatial.dialect.postgis.PostgisDialect"/>
<property name="hibernate.connection.driver_class" value="org.postgresql.Driver"/>
<property name="hibernate.connection.url" value="jdbc:postgresql://localhost:5432:xxxxx"/>
<property name="hibernate.connection.username" value="xxxxx"/>
<property name="hibernate.connection.password" value="xxxxx"/>
<property name="hibernate.connection.pool_size" value="5"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.format_sql" value="true"/>
<property name="hibernate.max_fetch_depth" value="5"/>
<property name="hibernate.hbm2ddl.auto" value="update"/>
</properties>
</persistence-unit>
I have tried right clicking on the project and adding the META_INF folder to the build path, and it still doesn't work. Any ideas?
我已经尝试右键单击项目并将 META_INF 文件夹添加到构建路径，但它仍然不起作用。有任何想法吗？
采纳答案by user944849
The proper home for the persistence file should be src/main/resources/META-INF. In the question, you mention src/main/resource/META_INF. Note, there should be an 's' in resources and a dash (-) in META-INF, not an underscore. Are those just typos in the question? If not, fix the path and it should work.
持久性文件的正确位置应该是 src/main/resources/META-INF。在问题中，您提到了 src/main/resource/META_INF。请注意，资源中应该有一个“s”，而 META-INF 中应该有一个破折号 (-)，而不是下划线。这些只是问题中的错别字吗？如果没有，请修复路径，它应该可以工作。
回答by Guilherme
I put a exclude and the maven stopped to put the persistence.xml. I had to use brutal force to fix:
我放了一个排除项，maven 停下来放persistence.xml。我不得不使用野蛮的力量来修复：
<resources>
<!-- After this maven stopped to put parsistence.xml-->
<resource>
<directory>src/main/resources/CATALINA_HOME/conf</directory>
<excludes>
<exclude>log4j.properties</exclude>
<exclude>jpa_stocks.properties</exclude>
</excludes>
</resource>
<!-- Brutal force to fix -->
<resource>
<directory>src/main/resources/META-INF</directory>
<targetPath>META-INF</targetPath>
<includes>
<include>persistence.xml</include>
</includes>
</resource>
</resources>
