如何使用PrimeFaces按钮在新窗口中打开任意URL [英] How to open an arbitrary URL in new window using a PrimeFaces button

问题描述

我有下面的输出链接可以完成其工作:

I have the below output link which does its job:

<h:outputLink value="#{verDocumentoController.url()}" target="_blank">
    show document
</h:outputLink>

它将在新窗口中打开作为bean属性获得的URL.

It opens an URL obtained as a bean property in a new window.

但是，我想将链接变成PrimeFaces外观上的一个按钮.我尝试如下:

However, I'd like to turn the link into a button in PrimeFaces look'n'feel. I tried as below:

<p:commandButton value="show document" action="#{verDocumentoController.url()}" 
    onclick="form.target='_blank'" ajax="false" />

但是它只会在新窗口中重新打开当前页面，而不是指定为bean属性的URL.反正我该如何实现?

But it only reopens the current page in a new window and not the URL specified as bean property. How can I achieve this anyway?

推荐答案

<p:commandButton>基本上向其父<h:form>指定的URL提交POST请求，该URL实际上默认为当前请求的URL(您知道， 回发"). action属性基本上会调用bean方法，并将返回的值用作导航案例的结果. URL不一定代表明智的导航案例结果.

The <p:commandButton> basically submits a POST request to the URL as specified by its parent <h:form>, which defaults indeed to the current request URL (you know, "postback"). The action attribute basically invokes a bean method and uses the returned value as navigation case outcome. An URL does not necessarily represent a sensible navigation case outcome.

只需在简单的<p:button>上使用window.open().

<p:button value="show document" 
    onclick="window.open('#{verDocumentoController.url()}');return false;" />

您也可以在<p:commandButton>上执行此操作，但这不必要太复杂.

You can also do this on a <p:commandButton>, but that's unnecessarily overcomplicated.

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