Spring Series "3" Application of constructor injection method for Bean injection

 Packagecn.com.xf; Public classUser {PrivateString name; Private intAge ; PrivateString Remark; //Omit Setter/getter Method@Override PublicString toString () {return"User [name=] + name +", age= "+ Age +", remark= "+Remark+ "]"; }}

 Packagecn.com.xf; Public classUserutil {Privateuser User;  PublicUser GetUser () {returnuser; }                //Note that this construction method     PublicUserutil (User u) { This. user=u; }         Public BooleanIsUser () {if(User! =NULL) {            return true; } Else {            return false; }    }}

The following is the spring configuration file

<?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-2.0.xsd">    <BeanID= "User"class= "Cn.com.xf.User">        < Propertyname= "Name"value= "Jikoy"></ Property>        < Propertyname= "Age"value= "+"></ Property>        < Propertyname= "Remark"value= "This is remark"></ Property>    </Bean>    <BeanID= "Userutil"class= "Cn.com.xf.UserUtil">        <Constructor-argref= "User"></Constructor-arg>    </Bean></Beans>

Above, I was not the same as the previous one, did not use the P tag, but the effect is the same, note <constructor-arg ref= "user" ></constructor-arg>

Package Cn.com.xf;import Org.springframework.context.configurableapplicationcontext;import Org.springframework.context.support.classpathxmlapplicationcontext;public class Test {public    static void main ( String[] args) {        configurableapplicationcontext ctx=new classpathxmlapplicationcontext ("Applicationcontext.xml ");        User user= (user) Ctx.getbean ("user");        Ctx.close ();        SYSTEM.OUT.PRINTLN (user);}    }

The test class is still a sub-interface method that uses ApplicationContext and provides a close method.

Spring Series "3" Application of constructor injection method for Bean injection