问题描述
我使用 Struts 2.3.16.3.我希望 webapp 1 的操作将参数传递给 webapp 2 中的操作.在 webapp 1 的 struts.xml 中,我定义了以下结果:
I use Struts 2.3.16.3. I want an action from webapp 1 to pass parameters to an action in webapp 2. In the struts.xml of webapp 1 I define the following result:
<result name="success" type="redirect"> <param name="location">http://localhost:8080/Webapp2/index.action</param> <param name="testParam">testValue</param> </result>
当结果等于成功"时,我希望我的浏览器将我重定向到此网页(webapp2 中的一个页面):
I expect my browser to redirect me to this webpage (a page in webapp2) when the result equals 'success':
http://localhost:8080/Webapp2/index.action?testParam=testValue
但是,我的浏览器会将我带到:
However, my browser takes me to:
http://localhost:8080/Webapp2/index.action
完全忽略参数.
如果我将结果更改为将所有内容都包含在位置参数中,那么它可以工作,但是您会看到使用多个参数会变得非常笨拙:
If I change my result to have everything inside the location param then it works, but you can see this gets very clunky with multiple params:
<result name="success" type="redirect"> <param name="location">http://localhost:8080/Webapp2/index.action?testParam=${testValue}</param> </result>
这会正确地将我的浏览器重定向到该网址:
This correctly redirects my browser to the url:
http://localhost:8080/Webapp2/index.action?testParam=testValue
为什么第一种方法不起作用?
Why does the first method not work?
推荐答案
如果location开头是http:, https:, mailto:, file:, ftp: 然后它被用作使用 response.sendRedirect() 重定向的最终位置.在这种情况下,使用 <param> 标记的结果中的参数将被忽略.
If the location starts with http:, https:, mailto:, file:, ftp: then it's used as a final location to redirect using response.sendRedirect(). Parameters in the result using <param> tag in this case are ignored.