Spring AOP Bean Add New method

Purpose: Add student ShowDetails () and Extrashowdetails () two methods for Studentadditionaldetails

AOP can add additional functionality to existing methods in spring, and AOP can add new methods to spring beans

<aop:declare-parents  
Types-matching= "Previous primitive class/interface"
Implement-interface= "Interface for the features you want to add"
Defalut-impl= "The default implementation of the new concept"
/>

Or:

<aop:declare-Parents  types-matching= "before the original class/interface" implement-interface= "The features you want to add Interface " delegate-ref=" The default implementation of the new concept "/>

Configuration file:

1<?xml version= "1.0" encoding= "UTF-8"?>2 3<beans xmlns= "Http://www.springframework.org/schema/beans"4Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"5xmlns:aop= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"6xmlns:tx= "Http://www.springframework.org/schema/tx"7xmlns:p= "http://www.springframework.org/schema/p"8xsi:schemalocation="9http//Www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-2.5.xsdTenhttp//WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOPhttp://www.springframework.org/schema/aop/spring-aop-2.5.xsd Onehttp//Www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> A  -  -  the       -<!--add a method to the Studentadditionaldetails or Studentadditionaldetailsimpl student -<bean id= "Student"class= "Imple." Studentimpl "> -<property name= "Studentno" value= "1001"/> +<property name= "Studentname" value= "John Peter"/> -</bean> +         A<bean id= "Studentadditionaldetails"class= "Imple." Studentadditionaldetailsimpl "> at<property name= "City" value= "NewYork"/> -<property name= "Country" value= "America"/> -</bean> -         -<aop:config> -<aop:aspect> in<!--types-matching= "imple. studentadditionaldetailsimpl+ "the same effect is achieved in the following way -Description: types-matching can be either an implementation class or an interface to- +<aop:declare-parents types-matching= "Inter. Studentadditionaldetails+ " -implement-Interface= "Inter." Student " the                                  delegate-ref= "Student"/> *</aop:aspect> $</aop:config>Panax Notoginseng  -  the</beans>

Or:

<?xml version= "1.0" encoding= "UTF-8"? ><beans xmlns= "Http://www.springframework.org/schema/beans"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"XMLNS:AOP= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"Xmlns:tx= "Http://www.springframework.org/schema/tx"xmlns:p= "http://www.springframework.org/schema/p"xsi:schemalocation="http//Www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-2.5.xsdhttp//WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOPhttp://www.springframework.org/schema/aop/spring-aop-2.5.xsdhttp//Www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-2.5.xsd"><!--for studentadditionaldetails or Studentadditionaldetailsimpl add student inside the method--<bean id= "student"class= "Imple." Studentimpl "> <property name=" Studentno "value=" 1001 "/> <property name=" Studentname "value= "John Peter"/> </bean> <bean id= "Studentadditionaldetails"class= "Imple." Studentadditionaldetailsimpl "> <property name=" City "value=" NewYork "/> <property name=" Coun                                  Try "value=" America "/> </bean> <aop:config> <aop:aspect> <!--types-matching= "imple. studentadditionaldetailsimpl+ "the effect is the same as in the following way: Types-matching can be either an implementation class or an interface--<aop:declare-parents types-matching= "Inter. Studentadditionaldetails+ "Implement-Interface= "Inter." Student "default-impl= "imple. Studentimpl "/> </aop:aspect> </aop:config> </beans>

Interface:

 1  package   Inter;  2   Public  interface   studentadditionaldetails { 4  public   void   Showadditionaldetails ();  5 } 

1  Package Inter; 2 3  Public Interface Student {  4public     void  showDetails ();   5      Public void extrashowdetails (); 6 }

Implementation method:

 Packageimple;ImportInter. Studentadditionaldetails; Public classStudentadditionaldetailsimplImplementsStudentadditionaldetails {PrivateString City; PrivateString Country;  PublicString getcity () {returnCity ; }       Public voidsetcity (String city) { This. City =City ; }       PublicString getcountry () {returnCountry; }       Public voidSetcountry (String country) { This. Country =Country; }              Public voidshowadditionaldetails () {System.out.println ("Studentadditionaldetailsimpl Showadditionaldetails () City:" + This. City); System.out.println ("Studentadditionaldetailsimpl showadditionaldetails () Country:" + This. Country); }  }

1  Packageimple;2 3 ImportInter. Student;4 5  Public classStudentimplImplementsStudent {6     Private intStudentno; 7     PrivateString Studentname; 8        9      Public intGetstudentno () {Ten         returnStudentno;  One     }   A      Public voidSetstudentno (intStudentno) {   -          This. Studentno =Studentno;  -     }   the      PublicString Getstudentname () { -         returnStudentname;  -     }   -      Public voidsetstudentname (String studentname) { +          This. Studentname =Studentname;  -     }      +         A      Public voidshowDetails () { atSystem.out.println ("Studentimpl showDetails studentno:" + This. Studentno);  -System.out.println ("Studentimpl showDetails studentname:" + This. Studentname);  -     } -      Public voidextrashowdetails () { -System.out.println ("Studentimpl extrashowdetails studentno:" + This. Studentno);  -System.out.println ("Studentimpl extrashowdetails studentname:" + This. Studentname);  in     }   -}

Test method:

1 @Test2      Public voidTest9 () {3Studentadditionaldetails studentadditionaldetails = (studentadditionaldetails) Ctx.getbean (" Studentadditionaldetails "); 4 ((Student) studentadditionaldetails). ShowDetails (); 5 ((Student) studentadditionaldetails).  Extrashowdetails (); 6 studentadditionaldetails.showadditionaldetails (); 7}

Output Result:

1 studentimpl showDetails studentno:10012studentimpl showDetails studentname:john Peter 3 studentimpl extrashowdetails studentno:10014Studentimpl extrashowdetails Studentname:john Peter5studentadditionaldetailsimpl showadditionaldetails () city:newyork6 Studentadditionaldetailsimpl showadditionaldetails () Country:america

Spring AOP Bean Add New method