英文:
Hibernate doesn't find entities in test
问题
我有一个由Maven构建的JDK11项目，充分利用了Java 9引入的JPMS。
我想编写集成测试，在集成测试中我使用嵌入式H2数据库。我的JPA提供者是Hibernate 5.4.9。
由于H2数据库仅在测试期间使用，我首先尝试将persistence.xml放入测试资源文件夹中。
问题在于Hibernate仅在test-classes文件夹中查找实体，完全忽略了主要的类，而我的实体就在主要类中。因此，我的测试失败了，因为它找不到我尝试使用的实体。
如果我将持久性单元声明复制到主要资源文件夹中，一切正常工作，然而，我不想这样做，因为Hibernate仅是一个测试依赖，我不想使用不存在的类。
为什么突然出现了这个问题？我以前从未遇到过这个问题（主要是在Java 8和Hibernate 5.3中）。
我能否在无需将persistence.xml复制到主要资源的情况下使我的实体被检测到？我也不想手动列出我的实体。
英文:
I have a JDK11 project built by Maven, making full use of the JPMS introduced in Java 9.
I'd like to write integration tests, where I use an embedded H2 database. My JPA provider is Hibernate 5.4.9.
Since the H2 database is only used during testing, I first tried putting the persistence.xml in the test resources folder.
The problem with this is that Hibernate is looking for entities in the test-classes folder only and completely ignores the main classes, where my entities are. So my test fails, because it doesn't find the entities I'm trying to use.
If I copy the persistence unit declaration to the main resources folder, everything works correctly, however, I wouldn't like to have it there because Hibernate is only a test dependency and I wouldn't like to use non-existing classes.
Why is this issue suddenly happening? I never had this issue come up before (mainly with Java 8 and Hibernate 5.3).
Can I manage to have my entities detected without having to copy my persistence.xml to my main resources? I also wouldn't like to list my entities manually.
答案1
得分: 1
我解决了。我忘记在我的测试persistence.xml中的persistence-unit声明中添加以下行：
<jar-file>${project.build.outputDirectory}</jar-file>
英文:
I worked it out. I forgot to add the following line to the persistence-unit declaration in my test persistence.xml:
<jar-file>${project.build.outputDirectory}</jar-file>
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