問題描述
我正在嘗試在 Maven 構建期間將測試數據加載到測試數據庫中以進行集成測試.persistence.xml 被正確復制到 target/test-classes/META-INF/，但是在運行測試時出現此異常.
I'm trying to load test data into a test DB during a maven build for integration testing. persistence.xml is being copied to target/test-classes/META-INF/ correctly, but I get this exception when the test is run.
javax.persistence.PersistenceException:沒有持久性提供程序EntityManager 命名為目標數據庫
javax.persistence.PersistenceException: No Persistence provider for EntityManager named aimDatabase
它似乎沒有找到或加載persistence.xml.
It looks like it's not finding or loading persistence.xml.
推薦答案
剛剛用一個基于 Maven/Eclipse 的 JPA 項目解決了同樣的問題.
Just solved the same problem with a Maven/Eclipse based JPA project.
我的 META-INF 目錄位于 src/main/java 下，因為在測試階段之前它沒有復制到目標目錄.
I had my META-INF directory under src/main/java with the concequence that it was not copied to the target directory before the test phase.
將此目錄移動到 src/main/resources 解決了問題，并確保 META-INF/persistence.xml 文件存在于 target/classes 運行測試的時間.
Moving this directory to src/main/resources solved the problem and ensured that the META-INF/persistence.xml file was present in target/classes when the tests were run.
我認為 JPA 方面將我的 META-INF/persistence.xml 文件放在 src/main/java 中，結果證明成為我問題的根源.
I think that the JPA facet put my META-INF/persistence.xml file in src/main/java, which turned out to be the root of my problem.
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