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From Jake Vang <vangj...@googlemail.com>
Subject Re: spring, struts2, convention plugin, how to "wire" an action class
Date Thu, 13 May 2010 12:09:37 GMT
thanks. example please? (when you have time).

On Thu, May 13, 2010 at 6:52 AM, James Cook <James.Cook@wecomm.com> wrote:
> 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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