Question

我正在使用guice-persist，我想知道是否有任何从Java属性文件中注入或解析器属性到persistence.xml文件中，就像我使用Spring一样。例如：

<?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="WoloxShivaJPAUnit" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>

        <class>com.guidomb.MyClass</class>

        <shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode>
        <properties>
            <property name="hibernate.connection.driver_class" value="${hibernate.connection.driver_class}">
            <property name="hibernate.connection.url" value="${hibernate.connection.url}">
            <property name="hibernate.connection.username" value="${hibernate.connection.username}">
            <property name="hibernate.connection.password" value="${hibernate.connection.password}">
            <property name="hibernate.dialect" value="${hibernate.dialect}">
            <property name="hibernate.id.new_generator_mappings" value="true">
            <property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.ImprovedNamingStrategy" />
        </properties>

    </persistence-unit>
</persistence>

如果不能如何使用guice-persist libray配置EntityManager，以便从属性文件中注入此属性？。

谢谢！

Answer 1

在创建JpaPersistModule时，您似乎可以提供其他属性：

JpaPersistModule jpa = new JpaPersistModule("myFirstJpaUnit");
jpa.properties(...);
Injector injector = Guice.createInjector(..., jpa);

如何使用Guice将属性注入/解析为XML文件以配置persistence.xml文件？

1 个答案: