How can a Struts plugin get references to beans in Spring?

[borland2004]

How can a Struts plugin get references to beans contained
in a Spring context?

I don’t want to use any Spring-specific classes in this plugin.

Any helps are appreciated.

[Kees de Kooter]

Take a look at the source code of WebApplicationContextUtils and copy the getWebApplicationContext functionality to your plugin.

[borland2004]

Take a look at the source code of WebApplicationContextUtils and copy the getWebApplicationContext functionality to your plugin.

Thanks for your reply.

But I don’t want to use any Spring-specific classes in this plugin.

[Colin Yates]

Not sure what you can do then

You could abstract it with an interface:

  interface BeanLoader {
    Object loadBean(final String name);
  }

and then have one implementation which uses Spring etc.

The only dependency in your structs action would be on the SpringBeanLoader, which is a single line.

HTH.

[anan]

Hi,

Anyone has a better solution injecting bean in struts plugin without importing spring API.

Thx
Anan

[thomasw]

Hi Anan,

Generally one component will need to know about/ and be able to find the other, in order to set any reference between them.

You can definitely achieve this; but it's not quite as easy as working solely in Spring. One bean/ action will be in Struts and hard to find from Spring; the other will be in Spring and hard to find from Struts.

Order of initialization issues will also apply; it won't work if you try to set the reference at init-time, since one or the other side will still be uninited and nonexistent.


Probably simplest: implement a static singleton class as a 'registry' which one side can set; and the other side can read later. This then decouples you from the Spring API, and from order-of-init issues.

Any other solutions ?

Cheers
T