title: Spring xml problem
body: <p>I'm trying to write a simple Spring AOP app, but I have problem with the xml configuration.</p>
  
  <p>My xml:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  
  
  &lt;beans xmlns="http://www.springframework.org/schema/beans"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
      xmlns:aop="http://www.springframework.org/schema/aop"
      xsi:schemaLocation="http://www.springframework.org/schema/beans 
      http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
      http://www.springframework.org/schema/aop"&gt;
  
  &lt;bean id="audience" class="springaop.Audience"&gt;
  &lt;/bean&gt;
  
  &lt;bean id="sam" class="springaop.Singer"&gt;
      &lt;property name="id" value="1"&gt;&lt;/property&gt;
  &lt;/bean&gt;
  
  &lt;aop:config&gt;
      &lt;aop:aspect ref="audience"&gt;
  
          &lt;aop:before pointcut="* springaop.Singer.perform(..)" 
          method="takeSeats"&gt;&lt;/aop:before&gt;
  
      &lt;/aop:aspect&gt;
  &lt;/aop:config&gt;
  
  &lt;/beans&gt;
  </code></pre>
  
  <p>I get this warning and exception:</p>
  
  <pre>
  WARNING: Ignored XML validation warning
      org.xml.sax.SAXParseException: SchemaLocation: schemaLocation value = 'http://www.springframework.org/schema/beans  http://www.springframework.org/schema/beans/spring-beans-3.0.xsd   http://www.springframework.org/schema/aop' must have even number of URI's.
  
  Exception: Line 18 in XML document from class path resource [aop-conf.xml] is invalid; nested exception is org.xml.sax.SAXParseException: cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'aop:config'.
  </pre>
  
  <p>Also, I cant understand the xmlns</p>