javax.persistence.PersistenceException: [PersistenceUnit: klmsdb] Unable to build EntityManagerFactory
在Stack Overflow找到解决方法,他没错,只不过给了个成功的例子:Stack Overflow
原persistence.xml
<?xml version="1.0" encoding="UTF-8" ?>
<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"
xmlns="http://java.sun.com/xml/ns/persistence"
version="2.0">
<persistence-unit name="klmsdb" transaction-type="RESOURCE_LOCAL">
<properties>
<property name="javax.persistence.jdbc.driver" value="org.h2.Driver" />
<property name="javax.persistence.jdbc.url" value="jdbc:h2:tcp://localhost/klmsdb;INIT=create schema IF NOT EXISTS sowa" />
<property name="javax.persistence.jdbc.user" value="sa" />
<property name="javax.persistence.jdbc.password" value="" />
<property name="hibernate.hbm2ddl.auto" value="create" />
<property name="hibernate.show_sql" value="true" />
</properties>
</persistence-unit>
</persistence>
修改后的
<?xml version="1.0" encoding="UTF-8" ?>
<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"
xmlns="http://java.sun.com/xml/ns/persistence"
version="2.0">
<persistence-unit name="klmsdb" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect" />
<property name="hibernate.connection.url" value="jdbc:h2:tcp://localhost/klmsdb;INIT=create schema IF NOT EXISTS sowa" />
<property name="hibernate.connection.driver_class" value="org.h2.Driver" />
<property name="hibernate.connection.username" value="sa" />
<property name="hibernate.connection.password" value="" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="false" />
</properties>
</persistence-unit>
</persistence>