JNDI Java 命名与目录接口

jsp

    <%
        Context ctx = new InitialContext();
        String jndiName = (String) ctx.lookup("java:comp/env/jndiName");
        out.print(jndiName);
    %>

context.xml

    <Environment name="jndiName" value="jndiValue" type="java.lang.String" />