如何识别托管bean中单击的commandButton [英] How to identify clicked commandButton in my managed bean

问题描述

我的托管bean中有一个actionListener方法，该方法被许多命令按钮调用.

I have an actionListener method in my managed bean which is called by many command buttons.

public void verifyTestDisponibility(ActionEvent actionEvent) {
    if (button1 clicked) {
        // ...
    }
    if (button2  clicked) {
        // ...
    }
}

我停留的部分是识别单击的命令按钮.如何识别?

The part I'm stucking at is identifying the clicked command button. How can I identify it?

推荐答案

您可以像这样使用它

在xhtml页面中，我们可以将<h:commandButton>标记与actionListener一起使用

In xhtml page we can use a <h:commandButton> tag with actionListener

<h:commandButton id="btn1" action="#{yourBean.method}" value="ButtonValue"
   actionListener="#{yourBean.commandClicked}"></h:commandButton>

在您的托管bean中

private String buttonId;
/* getters and setters for buttonId goes here */

public void commandClicked(ActionEvent event) {
  /* retrieve buttonId which you clicked */
  buttonId = event.getComponent().getId();

  /*check for which button you clicked*/
  if(buttonId.equals("btn1")){

  }else{

  }
}

这篇关于如何识别托管bean中单击的commandButton的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！