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From "James Cook" <James.C...@wecomm.com>
Subject RE: spring, struts2, convention plugin, how to "wire" an action class
Date Thu, 13 May 2010 10:52:46 GMT
Ahh hmm.

You can use the autowired, You just have to declare you stuff in the spring xml. E.g.

<bean id="myJDBCString" class="java.lang.String" ....

I think you can also use the @Resource anno as well. Can't think off the top of my head. 

-----Original Message-----
From: Jake Vang [mailto:vangjake@googlemail.com] 
Sent: 13 May 2010 11:44
To: Struts Users Mailing List
Subject: Re: spring, struts2, convention plugin, how to "wire" an action class

yes. precisely.

On Thu, May 13, 2010 at 6:41 AM, James Cook <James.Cook@wecomm.com> wrote:
> Oh, did you want your action as a spring managed bean? Ah I think i massively miss read
you. You want to inject predefined values etc?
>
>
> -----Original Message-----
> From: Jake Vang [mailto:vangjake@googlemail.com]
> Sent: 13 May 2010 11:38
> To: Struts Users Mailing List
> Subject: Re: spring, struts2, convention plugin, how to "wire" an action class
>
> thanks. i won't go that route. i noticed your example (in the first
> response) and i realized that i may trying to push some business logic
> into the Action class. and, i don't think that's too good of a
> practice. i simply revised my Service class to hold these values
> (booleans, String, int, etc...) and now the problem goes away. it's a
> workaround.
>
> if anyone is reading this post and knows how to use struts2 (w/
> convention plugin) + spring to construct Action classes, please let me
> know. the examples i've seen are only with struts1 (and though not too
> complicated, seem verbose with the xml).
>
> On Thu, May 13, 2010 at 6:20 AM, James Cook <James.Cook@wecomm.com> wrote:
>> Yeah sorry, short on time here, didn't see your question at the bottom. Add the spring
jar from the spring project.
>>
>> -----Original Message-----
>> From: Jake Vang [mailto:vangjake@googlemail.com]
>> Sent: 13 May 2010 11:16
>> To: Struts Users Mailing List
>> Subject: Re: spring, struts2, convention plugin, how to "wire" an action class
>>
>> doesn't answer the question but thanks anyways.
>>
>> On Thu, May 13, 2010 at 6:12 AM, James Cook <James.Cook@wecomm.com> wrote:
>>> Nope, no they are not in the xml for me. I use the @Service/@Repository annotations
on the class, coupled with the component scan in the Spring xml.
>>>
>>> -----Original Message-----
>>> From: Jake Vang [mailto:vangjake@googlemail.com]
>>> Sent: 13 May 2010 11:09
>>> To: Struts Users Mailing List
>>> Subject: Re: spring, struts2, convention plugin, how to "wire" an action class
>>>
>>> well, there's something strange about struts2 (with convention plugin)
>>> + spring. if your action has a field representing a service,
>>> MyInjectedService myInjectedService, you just have to define that in
>>> the spring xml file. for example, your Action class looks like the
>>> following.
>>>
>>> public class MyAction extends ActionSupport {
>>>  private Service service;
>>>
>>>  @Action(value="/dummy")
>>>  public String dummy() { return SUCCESS; }
>>>  public Service getService() { return service; }
>>>  public void setService(Service service) { this.service = service; }
>>> }
>>>
>>> in your spring xml file (i.e. applicationContext.xml), you simply
>>> define a bean with the id="service". for example,
>>>
>>> <bean id="service" class="my.class.Service"/>
>>>
>>> that's it; you don't have to do anything else. you don't even have to
>>> explicitly say (using XML) to inject this when you are creating an
>>> instance of MyAction. now when a user accesses /dummy, MyAction will
>>> be created and its service field will actually be injected with what
>>> is specified in the spring xml file.
>>>
>>> what irks me or  bothers me is that it is not obvious at the moment
>>> how to simply inject strings or booleans into the Action class. it
>>> should be just as simple.
>>>
>>> upon analyzing what i am doing, and in light of what you said, perhaps
>>> i am trying to push some logic into the Action class that shouldn't be
>>> there. perhaps i should push the logic to a service class instead. in
>>> this case, this problem goes away. BUT, the question remains, how can
>>> i use DI with struts2 (convention plugin)  and spring on Action
>>> classes? or can i not? if i can't, end of story. if i can, how?
>>>
>>> On Thu, May 13, 2010 at 5:44 AM, James Cook <James.Cook@wecomm.com> wrote:
>>>> Hmm. I use the same combo.
>>>>
>>>> I found at some point I could jsut do
>>>>
>>>> public class MyAction extends ActionSupport {
>>>>
>>>> private MyInjectedService service
>>>>
>>>> etc etc
>>>>
>>>> But I have started doing:
>>>>
>>>> public class MyAction extends ActionSupport {
>>>>
>>>> @Autowired
>>>> private MyInjectedService service
>>>>
>>>> I am not sure if that alters the way Struts2/Spring does it. But it does
>>>> make it a bit clearer to read.
>>>>
>>>> -----Original Message-----
>>>> From: Jake Vang [mailto:vangjake@googlemail.com]
>>>> Sent: 13 May 2010 10:23
>>>> To: user@struts.apache.org
>>>> Subject: spring, struts2, convention plugin, how to "wire" an action
>>>> class
>>>>
>>>> i am using struts 2.1.8.1 and the convention plugin. i am also using
>>>> spring for dependency injections (DI). my question is if it is
>>>> possible to to use struts2 + convention plugin with spring for DI on
>>>> my Action classes? i have searched  the internet but only seen
>>>> examples using struts 1 + spring for DI on Action classes. the
>>>> convention plugin makes life simpler (no XML), but also, partially
>>>> because of little documentation, makes it uneasy to do certain things.
>>>> i wonder if this is part of the reason why DI on Action classes using
>>>> spring + struts is not obvious for me.
>>>>
>>>> Here's a simple code. This is my action class.
>>>>
>>>> public class SpringWiringAction extends ActionSupport {
>>>>  private String message = "no dependency injection";
>>>>
>>>>  @Action(value="/spring-wiring")
>>>>  public String springWiring() {
>>>>  return SUCCESS;
>>>>  }
>>>>
>>>>  public String getMessage() { return message; }
>>>>  public void setMessage(String message) { this.message = message; }
>>>> }
>>>>
>>>> My "view" or the JSP page corresponding to the Action is:
>>>> /webapp/WEB-INF/content/spring-wiring-success.jsp.
>>>>
>>>> <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
>>>> pageEncoding="ISO-8859-1"%>
>>>> <%@taglib uri="/struts-tags" prefix="s" %>
>>>> <html>
>>>>  <head><title>Test Spring Wiring</title</head>
>>>>  <body>
>>>>  <s:property value="message"/>
>>>>  </body>
>>>> </html>
>>>>
>>>> My web.xml is setup according to
>>>> http://struts.apache.org/2.0.14/docs/struts-2-spring-2-jpa-ajax.html.
>>>>
>>>> My spring XML file (/webapp/WEB-INF/applicationContext.xml) is defined
>>>> as following.
>>>>
>>>> ...
>>>> <bean id="placeholderConfig"
>>>> class="org.springframework.beans.factory.config.PropertyPlaceholderConfi
>>>> gurer">
>>>>  <property name="location"
>>>> value="WEB-INF/applicationContext.properties"/>
>>>> </bean>
>>>> ...
>>>> <bean name="/spring-wiring" class="com.me.actions.SpringWiringAction">
>>>>  <property name="message" value="${message}"/>
>>>> </bean>
>>>>
>>>> My /webapp/WEB-INF/applicationContext.properties file then has this
>>>> content.
>>>>
>>>> message=dependency inject success
>>>>
>>>> when i start up tomcat 6, everything starts up correctly and there are
>>>> no complaints. however, when i go to
>>>> http://localhost/webapp/spring-wiring, the message that gets displayed
>>>> is "no dependency injection".
>>>>
>>>> is there something that i am missing using spring + struts2 (with the
>>>> convention plugin) to use DI on Actions?
>>>>
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>>>>
>>>
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>>>
>>
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>>
>
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>
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