How to change XML-based Configuration to annotation configuration in Spring? - spring

Question

The class is as following:
class ReportControllerBase {
String reportName = "Report";
public String getReportName() {
return reportName;
}
public void setReportName(String reportName) {
this.reportName = reportName;
}
// ...
}
class AnnualReportController extends ReportControllerBase {
// ...
}
class SkinCareAnnualReprotController extends AnnualReportController {
String productName;
public String getProductName() {
return productName;
}
public void setProductName(String productName) {
this.productName = productName;
}
}
And the XML-based configuration is as following:
<bean id="annualReportController" class="AnnualReportController">
<property name="reportName" value="Annual Report"/>
</bean>
<bean id="annualSpecialReportController" class="AnnualReportController">
<property name="reportName" value="Annual Special Report"/>
</bean>
<bean id="skinCareAnnualReprotController" class="SkinCareAnnualReprotController" parent="annualReportController">
<property name="productName" value="A famous skin care product"/>
</bean>
The Bean annualReportController and annualSpecialReportController is the instance of the same Class. And skinCareAnnualReprotController is inherited from bean annualReportController.
How to implement this configuration in annotation-based configuration in Spring?

Answer 1

#Configuration
public class ReportConfiguration {
#Bean public AnnualReportController annualReportController() {
AnnualReportController annualReportController = new AnnualReportController();
annualReportController.setReportName("Annual Report");
return annualReportController;
}
#Bean public AnnualReportController annualSpecialReportController() {
AnnualReportController annualSpecialReportController = new AnnualReportController();
return withAnnualSpecialReportName(annualSpecialReportController);
}
#Bean public SkinCareAnnualReportController skinCareAnnualReportController() {
SkinCareAnnualReportController skinCareAnnualReportController = new SkinCareAnnualReportController();
skinCareAnnualReportController.setProductName("A famous skin care product");
return withAnnualSpecialReportName(skinCareAnnualReportController);
}
// in this instance, a helper method is arguably overkill,
// but I've included it for demonstration
private <T extends AnnualReportController> T withAnnualSpecialReportName(T report) {
report.setReportName("Annual Special Report");
return report;
}
}
Take a look at the Spring 3.1 documentation for more information.