IBatis配置tomcat的JNDI問題解決Cannot create JDBC driver of class '' for connect URL 'null'

在sql－map－config.xml中配置如下：

<transactionManager type="JDBC" >
    <dataSource type="JNDI">
       <property name="DataSource" value="java:comp/env/jdbc/sample"/>
    </dataSource>
  </transactionManager>

你的工程的web.xml中配置如下：

<resource-ref>
       <description>sample</description>
       <res-ref-name>jdbc/sample</res-ref-name>
       <res-type>javax.sql.DataSource</res-type>
       <res-auth>Container</res-auth>
  </resource-ref> 

tomcat 5.0中server.xml配置如下：

    <Resource name="jdbc/sample" type="javax.sql.DataSource"/>
    <ResourceParams name="jdbc/sample">
    <parameter>
       <name>factory</name>
        <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
      </parameter>
      <parameter>
        <name>maxWait</name>
        <value>5000</value>
      </parameter>
      <parameter>
        <name>maxActive</name>
        <value>4</value>
      </parameter>
      <parameter>
        <name>password</name>
        <value>admin</value>
      </parameter>
      <parameter>
        <name>url</name>
        <value>jdbc:mysql://localhost:3306/sample</value>
      </parameter>
      <parameter>
        <name>driverClassName</name>
        <value>org.gjt.mm.mysql.Driver</value>
      </parameter>
      <parameter>
        <name>maxIdle</name>
        <value>2</value>
      </parameter>
      <parameter>
        <name>username</name>
        <value>root</value>
      </parameter>
    </ResourceParams>

tomcat 5.0下conf/Catalina/localhost/youapp.xml中加入

<Context docBase="youapp" path="/youapp" workDir="work/Catalina/localhost/youapp">

  <ResourceLink name="jdbc/sample" global="jdbc/sample" type="javax.sql.DataSourcer"/>
</Context>

把mysql的driver拷貝到tomcat下的lib中