无法获取数据源 [java:app/projectName]
Cannot acquire data source [java:app/projectName]
我是 JPA 的新手,我使用 Glassfish 4.1.1,当我尝试创建一个 EntityManagerFactory
时它显示了这个异常消息:
javax.persistence.PersistenceException: Exception [EclipseLink-7060]
(Eclipse Persistence Services - 2.6.1.v20150605-31e8258):
org.eclipse.persistence.exceptions.ValidationException Exception
Description: Cannot acquire data source [java:app/quiz]. Internal
Exception: javax.naming.NamingException: Lookup failed for
'java:app/quiz' in
SerialContext[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} [Root
exception is javax.naming.NameNotFoundException: No object bound to
name java:app/quiz]
我检查了我的配置文件,我认为它们是正确的,谁能帮助我?
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>
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>
好吧,我将这段代码添加到 web.xml 文件中,它工作正常
<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>
我是 JPA 的新手,我使用 Glassfish 4.1.1,当我尝试创建一个 EntityManagerFactory
时它显示了这个异常消息:
javax.persistence.PersistenceException: Exception [EclipseLink-7060] (Eclipse Persistence Services - 2.6.1.v20150605-31e8258): org.eclipse.persistence.exceptions.ValidationException Exception Description: Cannot acquire data source [java:app/quiz]. Internal Exception: javax.naming.NamingException: Lookup failed for 'java:app/quiz' in SerialContext[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} [Root exception is javax.naming.NameNotFoundException: No object bound to name java:app/quiz]
我检查了我的配置文件,我认为它们是正确的,谁能帮助我?
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>
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>
好吧,我将这段代码添加到 web.xml 文件中,它工作正常
<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>