title: How to add one more dtd to my Spring configration file?
body: <p>I have use a .dtd to my applicationContext.xml, but now i want to use Spring's AOP based on annotation. I've been told to add a  in my applicationContext.xml.</p>
  
  <pre><code>&lt;!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd"&gt;
  &lt;beans&gt;
      &lt;aop:aspectj-autoproxy /&gt;
  ...
  </code></pre>
  
  <p>But something wrong happens. It seems that the file doesn't recognize the aop node, so i think i should import one more .dtd file, and i find this:</p>
  
  <pre><code>&lt;!DOCTYPE aspectj PUBLIC
          "-//AspectJ//DTD//EN" "http://www.eclipse.org/aspectj/dtd/aspectj.dtd"&gt;
  </code></pre>
  
  <p>but can i use both .dtd togeter? how?</p>
  
  <p>thx</p>