struts2.0 验证框架中message的替换问题
在资源配置文件中配置了如下： 

user.required={0} is required 





使用struts2的验证框架配置文件 



<field name="name"> 

  <!-- 该表单域必须填写 --> 

  <field-validator type="requiredstring"> 

  <!-- 如果校验失败，显示user.required对应的信息 --> 


  <message key="user.required" >  
  </message> 

   

  </field-validator> 

</field> 

请问一下如何在 <message key="user.required" > </message>中为user.required={0} is required传递参数？ 

试着添加 <message key="user.required" arg0="123"> </message>又提示Attribute "arg0" must be declared for element type "message". 

请帮忙解答，非常感谢 


------解决方案--------------------
是不是没有添加在错误集合里面 例子如下: 
1: 
写在actionfrom 里面的前端验证 
public ActionErrors validate(ActionMapping mapping, 
HttpServletRequest request) 
{ 
ActionErrors errors=new ActionErrors(); 
if(name==null ||"".equals(name)) 
{ 
ActionMessage message=new ActionMessage("intput.count.null","name"); 
errors.add("name",message); 
} 
if(name.length() <=6 ||name.length()>=10) 
{ 
ActionMessage message=new ActionMessage("input.count.length","6","10"); 
errors.add("name",message); 
} 
if(null==password||"".equals(password)) 
{ 
ActionMessage message=new ActionMessage("input.password","password"); 
errors.add("password",message); 
} 
return errors; 
} 
2: 在action 里面的逻辑验证 
public ActionForward execute(ActionMapping mapping, ActionForm form, 
HttpServletRequest request, HttpServletResponse response) { 
LoginForm loginForm = (LoginForm) form; 
String name=loginForm.getName(); 
if("luoluoluo".equals(name)) 
{ 
ActionMessages messages=new ActionMessages(); 
ActionMessage actionMessage=new ActionMessage("input.jingzhi",name); 
messages.add("qingzhi", actionMessage); 
this.saveErrors(request, messages); //保存在errors集合里面 
return mapping.getInputForward(); 
} 
return null; 
} 
3: 在jsp页面显示 
<html:form action="login"> 
<!--arg0 表示输入参数 bundle 表示指定的资源文件 --> 
<bean:message key="into.input" arg0="name"/> 
<html:text property="name" /> 
<html:errors property="name" bundle="warn"/> <br/> 

<bean:message key="into.input" arg0="pass" /> 
<html:password property="password"/> 
<html:errors property="password" bundle="warn"/> 
<html:errors property="qingzhi" bundle="warn"/> <br/>