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How to make Component Plugin Module dependency-injected.

Akira Tsuchiya
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September 21, 2012

1. Write the below in the atlassian-plugin.xml.


<component key="helloWorldService" public="true" class="com.akira.MyHelloWorldServiceImpl">
<interface>com.akira.MyHelloWorldService</interface>
</component>

2. MyHelloWorldService

package com.akira;

public interface MyHelloWorldService {
String getMessage();
}

3. MyHelloWorldServiceImpl

package com.akira;

public class MyHelloWorldServiceImpl implements MyHelloWorldService {

public String getMessage() {
return "Hello World";
}
}

4. Use the Component Plugin Module in an ActionSupport class.

public class AkiraActionSupport extends JiraWebActionSupport {

private MyHelloWorldService _myHelloWorldService;

public String doExecute() {
System.out.println(_myHelloWorldService.getMessage());
return SUCCESS;
}
}

5. A NullPointerException occurs because the dependency-injection fails.

6. What other steps are required to make Componet Module available.

1 answer

1 accepted

0 votes
Answer accepted
Jobin Kuruvilla [Adaptavist]
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September 21, 2012

Inject it in constructor.

public class AkiraActionSupport extends JiraWebActionSupport {

    private MyHelloWorldService _myHelloWorldService;

    public AkiraActionSupport(MyHelloWorldService _myHelloWorldService){
        this.myHelloWorldService = myHelloWorldService;
    }
   
    public String doExecute() {
        System.out.println(_myHelloWorldService.getMessage());
        return SUCCESS;
    }
}

You will need component-import if you are using it in a different plugin.

Akira Tsuchiya
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September 21, 2012

Thank you very much.

I forgot how to use Springframework's dependency injection.

But I am wondering if I can inject it using Annotation Qualifier in JIRA like below.

@Autowired

@Qualifier("MyHelloWorldService")

private MyHelloWorldService _myHelloWorldService;

Higashi
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May 9, 2015

it seems you can. Just create custom spring-only xml definition in resource/META-INF/spring/*.xml. You can read more about it in: https://developer.atlassian.com/display/PLUGINFRAMEWORK/Advanced+Configuration+with+Spring+XML+Files Don't forget <context:annotation-config /> (as in: https://answers.atlassian.com/questions/29872/why-is-spring-autowire-not-working-for-my-jira-plugin-classes)

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