tomcat配备JNDI

tomcat配置JNDI
如工程名为fly,在tomcat安装目录下tomcat\conf\Catalina\localhost找到配置文件fly.xml,修改内容：

<Context path="/fly" reloadable="false" docBase="D:\workspace\fly" workDir="D:\workspace\fly\work">    <Resource name="jdbc/MysqlSource"        type="javax.sql.DataSource"        url="jdbc:mysql://localhost:3306/fly"        username="root"        password="1234"        driverClassName="com.mysql.jdbc.Driver"        maxIdle="3"        maxWait="-1"        maxActive="50" /></Context>

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

   try{         Context ctx=(Context) new InitialContext().lookup("java:comp/env");      ds=(DataSource)ctx.lookup("jdbc/MysqlSource") ;      conn=this.getConn();    }catch(Exception e){      System.out.println(e.toString()) ;    }