JSF 1.2动态添加自定义验证程序

Question

如果我正确理解JSF生命周期，它会在应用请求阶段注册验证程序。 这是否意味着我无法将addValidator调用到在Process Request Events阶段被调用的decode（）方法内部的Component对象句柄中？如果是这样，是否还有其他方式根据组件的属性值动态添加自定义验证器？

感谢

Answer 1

我希望应该工作类似于..

public class ValidatorWrapper implements Validator { 

private DoubleRangeValidator dbRangeValidator; 
private LongRangeValidator lRangeValidator; 
private String requiredValidatorType;/*An attribute to choose the type of validator*/ 

public ValidatorWrapper(){ 
    dbRangeValidator = new DoubleRangeValidator(10.01, 20.99);lRangeValidator = new LongRangeValidator(10, 20); 
} 

@Override 
public void validate(FacesContext context, UIComponent component, 
     Object value) throws ValidatorException { 
    if("LONG".equalsIgnoreCase(requiredValidatorType)) 
     lRangeValidator.validate(context, component, value); 
    else if("DBL".equalsIgnoreCase(requiredValidatorType)) 
     dbRangeValidator.validate(context, component, value); 
} }