Sample notifications for the aspect used by Spring AOP

1. Interface Class computerinterf. Java

 

package com.stelcomtech;public interface ComputerInterf { public void buyPc(); public void buySome(); public void test();}

2. Computer. Java

package com.stelcomtech;public class Computer implements ComputerInterf{ private String pcName="HPT7600"; private int pcPrice=5000; public String getPcName() {  return pcName; } public void setPcName(String pcName) {  this.pcName = pcName; } public int getPcPrice() {  return pcPrice; } public void setPcPrice(int pcPrice) {  this.pcPrice = pcPrice; }

 

package com.stelcomtech;

Public class computer implements computerinterf {private string pcname = "hpt7600"; private int pcprice = 5000; Public String getpcname () {return pcname;} public void setpcname (string pcname) {This. pcname = pcname;} public int getpcprice () {return pcprice;} public void setpcprice (INT pcprice) {This. pcprice = pcprice;} public void buypc () {system. out. println ("computer name:" + this. getpcname () + "; Price:" + Th Is. getpcprice ();} public void buysome () {system. Out. println ("I just want to buy a monitor! ") ;}Public void test (){}}

 

3. Proxy daili1.java

Package COM. stelcomtech; import Org. aopalliance. intercept. methodinterceptor; import Org. aopalliance. intercept. methodinvocation; public class daili1 implements methodinterceptor {public object invoke (methodinvocation arg0) throws throwable {system. out. println ("This proxy sends the mouse"); object = arg0.proceed (); return object ;}}

 

Package COM. stelcomtech; import Java. lang. reflect. method; import Org. springframework. AOP. methodbeforeadvice; public class daili implements methodbeforeadvice {public void before (method arg0, object [] arg1, object arg2) throws throwable {system. out. println ("welcome ");}}

 

Package COM. stelcomtech; import Java. lang. reflect. method; import Org. springframework. AOP. afterreturningadvice; public class after implements afterreturningadvice {public void afterreturning (Object arg0, method arg1, object [] arg2, object arg3) throws throwable {system. out. println ("Welcome next time! ");}}

 

4. Implement mainaop. Java

Package COM. stelcomtech; import Org. springframework. context. applicationcontext; import Org. springframework. context. support. filesystemxmlapplicationcontext; public class mainaop {public static void main (string [] ARGs) {applicationcontext context = new filesystemxmlapplicationcontext ("src/COM/stelcomtech/applicationcontext. XML "); computerinterf pcinterf = (computerinterf) context. getbean ("proxy"); pcinterf. buypc (); pcinterf. buysome (); // pcinterf. test (); test the interception of the entire class in the configuration file }}

 

5. configuration file applicationcontext. xml

<? XML version = "1.0" encoding = "UTF-8"?> <Beans xmlns = "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"> <bean id = "daili" class = "com. stelcomtech. daili "abstract =" false "lazy-init =" default "dependency-check =" default "> </bean> <bean id =" computer1 "class =" com. stelc Omtech. computer "abstract =" false "lazy-init =" default "dependency-check =" default "> </bean> <bean id =" after "class =" com. stelcomtech. after "abstract =" false "lazy-init =" default "dependency-check =" default "> </bean> <! -- Proxy Bean --> <bean id = "proxy" class = "org. springframework. AOP. framework. proxyfactorybean "abstract =" false "lazy-init =" default "dependency-check =" default "> <property name =" proxyinterfaces "> <! -- Proxy interface class --> <value> com. stelcomtech. computerinterf </value> </property> <property name = "target"> <! -- The new proxy acts as "notification" --> <ref bean = "computer1"/> </property> <property name = "interceptornames"> <! -- Proxy target class --> <list> <value> buybeforeadvisor </value> <value> buyafteradvisor </value> </List> </property> </bean> <! -- Buy notification --> <bean id = "buybeforeadvisor" class = "org. springframework. AOP. support. regexpmethodpointcutadvisor "abstract =" false "lazy-init =" default "dependency-check =" default "> <property name =" advice "> <ref bean =" daili "/> </property> <property name = "patterns"> <! -- Where proxy is used --> <value>. * Buy. * </value> <! -- <Value>. * COM \. stelcomtech \. computerinterf. * </value> --> </property> </bean> <bean id = "buyafteradvisor" class = "org. springframework. AOP. support. regexpmethodpointcutadvisor "abstract =" false "lazy-init =" default "dependency-check =" default "> <property name =" advice "> <ref bean =" after "/> </property> <property name = "patterns"> <! -- Where proxy is used --> <value>. * Buy. * </value> <! -- <Value>. * COM \. stelcomtech \. computerinterf. * </value> --> </property> </bean> </beans>

. Test Results

Log4j: warn no appenders cocould be found for logger (Org. springframework. Context. Support. filesystemxmlapplicationContext ).
Log4j: Warn please initialize the log4j system properly.
Welcome
Computer Name: hpt7600; Price: 5000
Welcome to the next visit!