How to pass a parameter in URL on a form submit in Struts2

问题

I am doing a project in Struts2 where I need of setting a parameter in URL like user parameter in below link.

I want this parameter to be passed when I click a form submit button and not any links separately. I know how to do this with <s:url> but that way I need to create a link instead of form submit.

Can someone please help me with a code sample how to do this? I know there's a way to do it with HTML or Struts1 but how to do it with Struts2? If there is a way to do this in struts.xml, please explain with an example.

<form action="/example/xyz.action?user=george" method="POST">

回答1:

try this:

<s:form action="xyz.action" method="GET">
    <s:hidden name="user" value="george"/>
    // other fields
</s:form>

method="GET" will show your parameter on the url, <s:hidden name="user" value="george"/> will take your parameter.

here is also an example for you Example

回答2:

It's possible if you use <s:url and <s:form tags.

<%@ taglib prefix="s" uri="/struts-tags" %>

<s:url id="xyzUrl" action="xyz" includeContext="false"><s:param name="user" value="george"/></s:url>
<s:form name="xyzForm" action="%{xyzUrl}" method="POST">

来源：https://stackoverflow.com/questions/13373760/how-to-pass-a-parameter-in-url-on-a-form-submit-in-struts2