[Java Sprint] Spring XML Configuration:constructor Injection Demo

Previous we see how to do Setter injection:https://www.cnblogs.com/answer1215/p/9472117.html

Now let's see how to cover Setter injection to coustructor injection. Notice, don ' t need to compare which one are better, you can use both.

Different from setter injection which use ' name ', constructor injection using ' index '.

Applicationcontext.xml

<?XML version= "1.0" encoding= "UTF-8"?><Beansxmlns= "Http://www.springframework.org/schema/beans"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"xsi:schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd" >    <!--Define A class, using implementation -    <Beanname= "Foo"class= "Com.pluralsight.repository.HibernateCustomerRepositoryImpl"></Bean>    <!--Setter injection:inject Hibernatecustomerrepositoryimpl to Customerrepository -    <Beanname= "CustomerService"class= "Com.pluralsight.service.CustomerServiceImpl">        <!--<property name= "customerrepository" ref= "foo" ></property> -         <constructor-arg  index= "0"  ref= "foo"> </constructor-arg>     </Bean></Beans>

 PackageCom.pluralsight.service;ImportCom.pluralsight.model.Customer;Importcom.pluralsight.repository.CustomerRepository;Importjava.util.List; Public classCustomerserviceimplImplementsCustomerService {//private Customerrepository customerrepository = new Hibernatecustomerrepositoryimpl ();    Privatecustomerrepository customerrepository; Public    Customerserviceimpl () {}   public Customerserviceimpl (customerrepository    Customerrepository) {  this. customerrepository = customerrepository; }/*Public void Setcustomerrepository (Customerrepository customerrepository) {this.customerrepository = Custom    Errepository; }*/@Override PublicList<customer>FindAll () {returnCustomerrepository.findall (); }}

[Java Sprint] Spring XML Configuration:constructor Injection Demo