解决struts2 annotation validation 对action全部的方法都做验证

解决struts2 annotation validation 对action所有的方法都做验证？
近来在项目的过程中遇到一个问题：
我们采用 struts2 annotation 技术来做 validation，但是 annotation validation 对 action 类里的所以有的方法都做验证，我很郁闷。
比如：在 display 员工信息的时候，不要做 validation.
请大家指点!

import org.springframework.context.annotation.Scope; 
import org.springframework.stereotype.Component; 

import com.emice.sfc.service.PersistenceService; 
import com.opensymphony.xwork2.Action; 
import com.opensymphony.xwork2.ActionSupport; 
import com.opensymphony.xwork2.validator.annotations.RequiredStringValidator; 
import com.opensymphony.xwork2.validator.annotations.Validation; 
import com.opensymphony.xwork2.validator.annotations.Validations; 

@Scope("prototype") 
@Component() 
@Validation() 
public class PersonAction extends ActionSupport { 

private String userId;
private String userName; 
private String sex; 
private String age; 
private String birthday; 
/***
*省略 get set
...
...
...
***/

private PersistenceService service; 


/** 
* 保存员工基本信息 
* @return 
*/ 
@Validations(requiredStrings={ 
@RequiredStringValidator( fieldName = "userName", key = "i18n.key",message = " You must enter a value for userName.")}) 
public String save() { 
service.save(userName,sex,age,birthday); 
return Action.SUCCESS; 
} 

/** 
* 显示员工基本信息 
* @return 
*/ 
public String display() { 
service.get(userId); 
return Action.SUCCESS; 
} 


}