使用 GET 提交 JSF 表单 [英] Submit a JSF form using GET

问题描述

如何将表单提交到同一页面并使用 GET 参数?

How do I submit a form to the same page and use GET parameters?

JSF 页面内容:

<f:metadata>
    <f:viewParam name="item1" value="#{bean.item1}"/>
    <f:viewParam name="item2" value="#{bean.item2}"/>
</f:metadata>

...

<h:form>
  <h:inputText value="#{bean.item1}"/>
  <h:inputText value="#{bean.item2}"/>

  <h:button value="Submit" >
      <f:param name="item1" value="#{bean.item1}"/>
      <f:param name="item2" value="#{bean.item2}"/>
  </h:button>
</h:form>

如果我请求页面:form.jsf?item1=foo&item2=bar，它将填充文本字段，但表单提交给自身似乎不起作用.

If I request the page: form.jsf?item1=foo&item2=bar, it will populate the text fields, but the form submission to itself doesn't seem to work.

推荐答案

Replace by

Replace <h:button> by

<h:commandButton value="Submit" action="form?faces-redirect=true&amp;includeViewParams=true"/>

它有效地触发了一个 PRG(重定向后获取)，它将在查询字符串中包含 参数.需要注意的是，目标页面必须具有完全相同的.

It effectively fires a PRG (Post-Redirect-Get) which will include the <f:viewParam> params in the query string. Noted should be that the target page must have exactly same <f:viewParam>.

另一种解决方案是使用纯 HTML

而不是 ，给输入元素一个 id> 匹配参数名称并使用普通的 .您当然也可以在此处使用纯 HTML .

Another solution is to use a plain HTML <form> instead of <h:form>, give the input elements an id matching the parameter name and use a plain <input type="submit">. You can of course also use plain HTML <input type="text"> here.

<form>
    <h:inputText id="item1" value="#{bean.item1}"/>
    <h:inputText id="item2" value="#{bean.item2}"/>

    <input type="submit" value="Submit" />
</form>

您仍然应该保留两边的 .您只需要意识到无法在这种形式中完成转换/验证，它们必须通过目标页面上的 执行.

You should still keep the <f:viewParam> in both sides. You only need to realize that conversion/validation couldn't be done in this form, they have to be performed via the <f:viewParam> on the target page.

• 什么可以<f:metadata>，<f:viewParam>和 <f:viewAction>用于?

这篇关于使用 GET 提交 JSF 表单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！