如何使用Spring JNDITemplate读取Tomcat环境条目

<Context>
  <Resource name="myDataSource" auth="Container" type="javax.sql.DataSource"
    maxTotal="100" maxIdle="30" maxWaitMillis="10000"
    username="your_username" password="your_password"
    driverClassName="com.mysql.jdbc.Driver"
    url="jdbc:mysql://localhost:3306/mydatabase"/>
</Context>

<bean id="jndiTemplate" class="org.springframework.jndi.JndiTemplate">
  <property name="environment">
    <props>
      <prop key="java.naming.factory.initial">org.apache.naming.java.javaURLContextFactory</prop>
      <prop key="java.naming.provider.url">localhost</prop>
      <prop key="java.naming.factory.url.pkgs">org.apache.naming</prop>
    </props>
  </property>
</bean>

import org.springframework.jndi.JndiTemplate;
import javax.sql.DataSource;

public class MyDataSourceService {
  private JndiTemplate jndiTemplate;

  public void setJndiTemplate(JndiTemplate jndiTemplate) {
    this.jndiTemplate = jndiTemplate;
  }

  public DataSource getDataSource() {
    return (DataSource) jndiTemplate.lookup("java:comp/env/myDataSource");
  }
}