ssh框架的structs-config.xml报错

代码如下：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd"><struts-config>       //报错行
  <data-sources />
  <form-beans >
    <form-bean name="loginForm" type="com.ssh.struts.form.LoginForm" />
   </form-beans>
  <action-mappings />
    <action
      attribute="loginForm"
      input="/login.jsp"
      name="loginForm"
      path="/login"
      scope="request"
      type="com.ssh.struts.action.LoginAction" >
      <forward name="suc" path="/index.jsp" />
    </action>
</struts-config>报错提示：The content of element type "struts-config" must match "(displayname?,description?,datasources?,form-beans?,global-exceptions?,global-forwards?,action-mappings?,controller?,message-resources*,plug-in*)".