Question

我尝试使用JPA将我的scala代码连接到mysql，然后我继续回到这个错误：

scala> DataToStore.storeData(url)
javax.persistence.PersistenceException: No Persistence provider for EntityManager named healthcenters
  at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:89)
  at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:60)
  at healthcenterdataload.Model$.emf(Model.scala:11)
  at healthcenterdataload.Model$.em(Model.scala:13)
  at healthcenterdataload.DataToStore$.storeData(HealthCenter.scala:41)
  ... 38 elided

这是我的persistence.xml，位于src / META-INF：

<?xml version="1.0" encoding="UTF-8"?>
<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="healthcenters">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <class>healthcenterdataload.DataToStoreClass</class>
        <class>healthcenterdataload.HealthCenterData</class>
        <properties>
            <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
            <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:8889/healthcenters"/>
            <property name="javax.persistence.jdbc.user" value="root"/>
            <property name="javax.persistence.jdbc.password" value="root"/>
        </properties>
    </persistence-unit>
</persistence>

这是我在build.sbt中的依赖项：

libraryDependencies ++= Seq(
  "org.json4s" %% "json4s-native" % "3.5.1",
  "org.json4s" %% "json4s-jackson" % "3.5.1",
  "javax.persistence" % "persistence-api" % "1.0",
  "mysql" % "mysql-connector-java" % "5.1.36",
  "org.hibernate" % "hibernate-core" % "5.2.10.Final",
  "org.hibernate" % "hibernate-entitymanager" % "5.2.10.Final"

我的数据库名称和持久性单元目前具有相同的名称，但更改它似乎没有任何帮助。

思考？这是我第一次像这样将项目连接在一起，所以这是一个学习过程！：）

谢谢！

没有EntityManager的持久性提供程序名为healthcenters

0 个答案: