hibernate项目中persistence.xml的优先级
我有一个 Eclipse 项目，其中有几个 JPA/Hibernate 的 jar。其中一个包含 META-INF/persistence.xml，我想通过定义我自己的 persistence.xml 来覆盖它。因此，我尝试在 src/persistence.xml 和 src/META-INF/persistence.xml 中使用我的 persistence.xml 但每次看起来< code>jar/META-INF/persistence.xml 被拾取。 我还尝试编辑 Eclipse 项目的 .classpath 文件，并将 classpathentry path="bin" 向上移动到高于包含库，但仍然没有获取我的 persistence.xml
<classpath>
<classpathentry kind="src" path="src/main/java"/>
<classpathentry kind="src" path="src/main/rules"/>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
<classpathentry kind="output" path="bin"/>
<classpathentry kind="con" path="DROOLS/Drools"/>
<classpathentry kind="con" path="org.eclipse.jdt.USER_LIBRARY/drools"/>
</classpath>
在教程中我读到：
您需要覆盖这些 如果您想更改默认值， 通过添加您自己的 persistence.xml 您的类路径，位于默认值之前 drools-persistence-jpa.jar 中的一个
I have an eclipse project with several jars for JPA / Hibernate. One of tham contains a META-INF/persistence.xml and I want to override that by defining my own persistence.xml. So I tried using my persistence.xml in src/persistence.xml also src/META-INF/persistence.xml but everytime it seems jar/META-INF/persistence.xml gets picked up.
I also tried editing .classpath file of eclipse projects and moved up classpathentry path="bin" higher up than the library included but still its not picking up my persistence.xml
<classpath>
<classpathentry kind="src" path="src/main/java"/>
<classpathentry kind="src" path="src/main/rules"/>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
<classpathentry kind="output" path="bin"/>
<classpathentry kind="con" path="DROOLS/Drools"/>
<classpathentry kind="con" path="org.eclipse.jdt.USER_LIBRARY/drools"/>
</classpath>
In the tutorial I read:
You will need to override these
defaults if you want to change them,
by adding your own persistence.xml in
your classpath, preceding the default
one in drools-persistence-jpa.jar
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persistence.xml应位于META-INF/persistence.xml下，因此第一次尝试将不起作用。当我查看您的.classpath文件时，我没有看到src作为源路径，因此第二次尝试也不起作用。尝试使用 src/main/java/META-INF/persistence.xml 来代替。
实际上，您的项目布局确实看起来像 Maven 布局，并且使用 Maven，资源通常会转到
src/main/resources或src/test/resources。但由于您没有提到您正在遵循什么教程，因此我无法确认这是否适用于此处。无论如何，我的建议应该有效。
The
persistence.xmlshould be located underMETA-INF/persistence.xmlso the first attempt won't work. And when I look at your.classpathfile, I don't seesrcas source path so the second attempt won't work either.Try
src/main/java/META-INF/persistence.xmlinstead.Actually, your project layout really looks like a Maven layout and with Maven, resources typically go to
src/main/resourcesorsrc/test/resources. But since you didn't mention what tutorial you're following, I can't confirm if this applies here.Anyway, my suggestion should work.