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22:11:43,593 WARN [JBossManagedConnectionPool] Throwable while attempting to get a new connection: null
org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: NO))
<?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_1_0.xsd" version="1.0">
<!-- 这里配置name属性的值 没找到哪里用到过 -->
<persistence-unit name="testDataSourceEJBPU" transaction-type="JTA">
<!-- 这个数据源在 [Jboss安装目录]\server\default\deploy\mysql-ds.xml中配置过 -->
<jta-data-source>java:/myDataSource</jta-data-source>
</persistence-unit>
</persistence>
<datasources>
<local-tx-datasource>
<jndi-name>myDataSource</jndi-name>
<!-- testdatasource是数据库的名称 -->
<connection-url>jdbc:mysql://localhost:3306/testdatasource</connection-url>
<driver-class>com.mysql.jdbc.Driver</driver-class>
<user-name>root</user-name>
<user-name>root</user-name>
<exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name>
<metadata>
<type-mapping>mySQL</type-mapping>
</metadata>
</local-tx-datasource>
</datasources>