xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" 
xmlns="http://java.sun.com/xml/ns/j2ee" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">//不一样的



  <servlet>
  <servlet-name>dispatcher</servlet-name>
  <servlet-class>mypack.DispatcherServlet</servlet-class>
  <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
  <servlet-name>dispatcher</servlet-name>
  <url-pattern>/dispatcher</url-pattern>
  </servlet-mapping>


 <taglib>(这里为什么个有大红叉)
  <taglib-uri>/mytaglib</taglib-uri>
  <taglib-location>/WEB-INF/mytaglib.tld</taglib-location>
  </taglib>

</web-app>
但下面这些为什么对的:

<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app PUBLIC
  '-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN'
  'http://java.sun.com/j2ee/dtds/web-app_2_3.dtd'>//不一样的

<web-app>

  <servlet>
  <servlet-name>dispatcher</servlet-name>
  <servlet-class>mypack.DispatcherServlet</servlet-class>
  <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
  <servlet-name>dispatcher</servlet-name>
  <url-pattern>/dispatcher</url-pattern>
  </servlet-mapping>


 <taglib>
  <taglib-uri>/mytaglib</taglib-uri>
  <taglib-location>/WEB-INF/mytaglib.tld</taglib-location>
  </taglib>

</web-app>
这两个只是我标记的了地方不一样,问题在哪!是标记那有问题?但上面一个我是在Myeclispe中自己生成的,只是加个<taglib>就不对,web中有<taglib>这个标签的啊!

------解决方案--------------------
2.4中使用<taglib>的方法:

在<taglib>外面加上<jsp-config>

2.3中可以直接写:

XML code

  <taglib> 
      <taglib-uri> /mytaglib </taglib-uri> 
      <taglib-location> /WEB-INF/mytaglib.tld </taglib-location> 
  </taglib>