点击一个特定的按钮时如何跳过验证？ [英] How to skip validation when a specific button is clicked?

问题描述

我有在一个字段校验器的形式。我有两个 H：的commandButton 取值：确定和取消。当我开关输入错误的数据，然后单击取消，我得到一个验证消息。我必须这样做验证，当我点击取消不跑？

I have a form with a validator on one field. I have two h:commandButtons: Ok and Cancel. When I imput wrong data and click Cancel I get a validation message. What must I do that validator don't run when I click cancel?

推荐答案

如果你不使用AJAX，或仍对JSF 1.x中，并且你确实需要在取消（）方法（即只重新加载页面不足），那么最好的办法是添加立即=真正的的按钮。这样，所有输入字段不具有立即=真正的将在处理被跳过。

In case you aren't using ajax, or are still on JSF 1.x, and you really need to invoke a business action in cancel() method (i.e. just reloading the page is insufficient), then your best bet is to add immediate="true" to the button. This way all input fields which don't have immediate="true" will be skipped in processing.

<h:commandButton value="Cancel" action="#{bean.cancel}" immediate="true" />

在JSF 2.x中，更好的是＆LT提交表单; F：AJAX＆GT; ，它在默认情况下只流程 @this 而不是 @form 。

On JSF 2.x, much better is to submit the form by <f:ajax>, which by default only processes @this instead of @form.

<h:commandButton value="Cancel" action="#{bean.cancel}">
    <f:ajax />
</h:commandButton>

如果你想在这里导航到另一个页面，添加？面临重定向=真正来的成果取消（）方法。

If you want to navigate to another page here, add ?faces-redirect=true to the outcome in the cancel() method.

或者，如果你其实并不需要在所有调用任何商业行为，那么就使用＆LT; H：按钮＆GT; ，其中你直接指定（隐含的）导航的情况下的结果。

Or, if you actually don't need to invoke any business action at all, then just use <h:button> wherein you directly specify the (implicit) navigation case outcome.

<h:button value="Cancel" outcome="previouspage" />

这将基本上是由一个GET请求重新加载页面。在＆LT; H：按钮＆GT; 不JSF 1.x中存在的，但你也可以只使用纯HTML + JS为

This will basically reload the page by a GET request. The <h:button> doesn't exist in JSF 1.x, but you can also just use plain HTML+JS for that.

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