jboss5 myeclipse7.1 mysql5 配置注意事项

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1.New--Enterprise Application Project

2.从jboss\docs\examples\jca复制一个数据源配置 如mysql-ds.xml 到jboss5\server\default\deploy下
 
3.把mysql-connector-java-5.0.8-bin.jar拷到server\default\lib下  
4.编辑代码
5.部署  注意要部署myejb工程 删server\default\deploy\myejb.ear\myejbWeb.war\WEB-INF\classes\META-INF\persistence.xml
  否则会报PersistenceUnitMetaData ... Component already registered.

附：mysql-ds.xml
<?xml version="1.0" encoding="UTF-8"?>

<!-- $Id: mysql-ds.xml 41017 2006-02-07 14:26:14Z acoliver $ -->
<!--  Datasource config for MySQL using 3.0.9 available from:
http://www.mysql.com/downloads/api-jdbc-stable.html
-->

<datasources>
  <local-tx-datasource>
    <jndi-name>MySqlDS</jndi-name>
    <connection-url>jdbc:mysql://127.0.0.1:3306/test</connection-url>
    <use-java-context>false</use-java-context>
    <driver-class>com.mysql.jdbc.Driver</driver-class>
    <user-name>root</user-name>
    <password>000000</password>
    <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name>
    <!-- should only be used on drivers after 3.22.1 with "ping" support
    <valid-connection-checker-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLValidConnectionChecker</valid-connection-checker-class-name>
    -->
    <!-- sql to call when connection is created
    <new-connection-sql>some arbitrary sql</new-connection-sql>
      -->
    <!-- sql to call on an existing pooled connection when it is obtained from pool - MySQLValidConnectionChecker is preferred for newer drivers
    <check-valid-connection-sql>some arbitrary sql</check-valid-connection-sql>
      -->

    <!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional) -->
    <metadata>
       <type-mapping>mySQL</type-mapping>
    </metadata>
  </local-tx-datasource>
</datasources>