Question

我使用maven原型创建了Struts 2 web app。现在，当我在tomcat7上部署该项目并编辑persistence.xml来更改数据库配置时，它没有反映在Application中。为了测试我的理论，我从persistence.xml中删除了WEB-INF/classes/META-INF/。即便如此，我得到的是： -

Connection refused: connect
java.net.ConnectException : Error connecting to server localhost on port 1527 with message Connection refused: connect.
java.net.ConnectException : Error connecting to server localhost on port 1527 with message Connection refused: connect.
Internal Exception: java.sql.SQLNonTransientConnectionException: java.net.ConnectException : Error connecting to server localhost on port 1527 with message Connection refused: connect. Error Code: 40000
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.5.1.v20130918-f2b9fc5): org.eclipse.persistence.exceptions.DatabaseException Internal Exception: java.sql.SQLNonTransientConnectionException: java.net.ConnectException : Error connecting to server localhost on port 1527 with message Connection refused: connect. Error Code: 40000

我不知道从哪个位置获取持久性配置。这是我的persistence.xml： -

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
  <persistence-unit name="em" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <class>com.ankitsoft.entities.City</class>
    <class>com.ankitsoft.entities.Country</class>
    <exclude-unlisted-classes>false</exclude-unlisted-classes>
    <properties>
      <property name="javax.persistence.jdbc.url" value="jdbc:derby:C:\proLoc\WEB-INF\DB"/>
      <property name="javax.persistence.jdbc.password" value="ankit"/>
      <property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.EmbeddedDriver"/>
      <property name="javax.persistence.jdbc.user" value="ankit"/>
    </properties>
  </persistence-unit>
</persistence>

有人可以帮助我吗？

Answer 1

如果你在一个bundle中调用persistence.xml，那么org.eclipse.persistence.jpa必须在你的bundle（或多个bundle）之前启动。因此，始终将 org.eclipse.persistence 添加为清单中的导入包是个好主意

EclipseLink 2.5没有咨询persistence.xml

1 个答案: