使用JSF 2.0(和Primefaces),是否有办法在加载页面时触发ActionListener?
由于
答案 0 :(得分:1)
取决于您的需求,例如,如果您想在bean中初始化某些内容,可以将f:event
与preRenderView
一起使用:
检查此链接: http://www.mkyong.com/jsf2/jsf-2-prerenderviewevent-example/
但你应该知道事件是对每个请求的调用:ajax,验证失败....你可以检查它是否是这样的新请求:
public boolean isNewRequest() {
final FacesContext fc = FacesContext.getCurrentInstance();
final boolean getMethod = ((HttpServletRequest) fc.getExternalContext().getRequest()).getMethod().equals("GET");
final boolean ajaxRequest = fc.getPartialViewContext().isAjaxRequest();
final boolean validationFailed = fc.isValidationFailed();
return getMethod && !ajaxRequest && !validationFailed;
}