Question

我是JPA的新手，我使用Glassfish 4.1.1，当我尝试创建EntityManagerFactory时，它会显示此异常消息：

javax.persistence.PersistenceException：Exception [EclipseLink-7060]（Eclipse Persistence Services - 2.6.1.v20150605-31e8258）：org.eclipse.persistence.exceptions.ValidationException 异常说明：无法获取数据源[java：app / quiz]。内部异常：javax.naming.NamingException：SerialContext中的'java：app / quiz'查找失败[myEnv = {java.naming.factory.initial = com.sun.enterprise.naming.impl.SerialInitContextFactory，java.naming.factory .state = com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl，java.naming.factory.url.pkgs = com.sun.enterprise.naming} [根异常是javax.naming.NameNotFoundException：没有对象绑定命名为java：app / quiz]

我检查了配置文件，我认为它们是正确的，任何人都可以帮助我吗？

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="QuizPU" transaction-type="JTA">
    <jta-data-source>java:app/quiz</jta-data-source>
    <exclude-unlisted-classes>false</exclude-unlisted-classes>
    <properties>
      <property name="javax.persistence.schema-generation.database.action" value="create"/>
    </properties>
  </persistence-unit>
</persistence>

与GlassFish ressources.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE resources PUBLIC "-//GlassFish.org//DTD GlassFish Application Server 3.1 Resource Definitions//EN" "http://glassfish.org/dtds/glassfish-resources_1_5.dtd">
<resources>
    <jdbc-connection-pool allow-non-component-callers="false" associate-with-thread="false" connection-creation-retry-attempts="0" connection-creation-retry-interval-in-seconds="10" connection-leak-reclaim="false" connection-leak-timeout-in-seconds="0" connection-validation-method="auto-commit" datasource-classname="com.mysql.jdbc.jdbc2.optional.MysqlDataSource" fail-all-connections="false" idle-timeout-in-seconds="300" is-connection-validation-required="false" is-isolation-level-guaranteed="true" lazy-connection-association="false" lazy-connection-enlistment="false" match-connections="false" max-connection-usage-count="0" max-pool-size="32" max-wait-time-in-millis="60000" name="mysql_quiz_rootPool" non-transactional-connections="false" pool-resize-quantity="2" res-type="javax.sql.DataSource" statement-timeout-in-seconds="-1" steady-pool-size="8" validate-atmost-once-period-in-seconds="0" wrap-jdbc-objects="false">
        <property name="serverName" value="localhost"/>
        <property name="portNumber" value="3306"/>
        <property name="databaseName" value="quiz"/>
        <property name="User" value="root"/>
        <property name="Password" value=""/>
        <property name="URL" value="jdbc:mysql://localhost:3306/quiz?zeroDateTimeBehavior=convertToNull"/>
        <property name="driverClass" value="com.mysql.jdbc.Driver"/>
    </jdbc-connection-pool>
    <jdbc-resource enabled="true" jndi-name="java:app/jdbc:mysql://localhost:3306/quiz" object-type="user" pool-name="mysql_quiz_rootPool"/>
</resources>

Answer 1

好吧，我将此代码添加到web.xml文件中，并且工作正常

    <resource-ref>
 <res-ref-name>java:app/quiz</res-ref-name>
 <res-type>javax.sql.DataSource</res-type>
 <res-auth>Container</res-auth>
 <res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>

无法获取数据源[java：app / quiz]

1 个答案: