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我正在嘗試一個Maven Spring AOP示例，同時爲考試而學習，並將arcos帶來以下問題。之前建議不執行SPRING AOP
我有一個簡單的建議，我需要解僱之前....
我的代碼如下
我的POM定義爲
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org /2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org /xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>my.chrispie</groupId>
<artifactId>MyMavenSpringProject</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>MyMavenSpringProject</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>3.0.0.RELEASE</spring.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- Spring AOP + AspectJ -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.6.11</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.11</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
<version>1.2</version>
<executions>
<execution>
<goals>
<goal>compile</goal> <!-- use this goal to weave all your main classes -->
<goal>test-compile</goal> <!-- use this goal to weave all your test classes -->
</goals>
</execution>
</executions>
</plugin>
</plugins>
我有觀衆類
package my.chrispie.example.objects;
import org.aspectj.lang.ProceedingJoinPoint;
public class Audience {
public void takeSeats() {
System.out.println("The audience is taking their seats");
}
public void turnOffCellPhones() {
System.out.println("Turn off phones");
}
public void applaud() {
System.out.println("CLAP CLAP CLAP");
}
public void demandRefund() {
System.out.println("BOO BOO BOO");
}
public void perform() {
System.out.println(".............PERFORMING");
}
public void watchPerformance(ProceedingJoinPoint jointpoint) {
try {
System.out.println("Audience is taking there seats");
long start = System.currentTimeMillis();
jointpoint.proceed();
long end = System.currentTimeMillis();
System.out.println("Perfomance took " + (end - start));
} catch (Throwable t) {
System.out.println("Boo we want our money back");
}
}
}
和一個配置XML定義爲
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">
<bean id="audienceExampleTest1" class="my.chrispie.example.objects.Audience"> </bean>
<bean id="audienceExampleTest2" class="my.chrispie.example.objects.Audience"></bean>
<aop:config>
<aop:aspect ref="audienceExampleTest1">
<aop:before pointcut="execution(* my.chrispie.example.objects.Audience.perform(..))"
method="takeSeats"/>
<aop:after method="takeSeats" pointcut="execution(* my.chrispie.example.objects.Audience.perform(..)) "/>
</aop:aspect>
</aop:config>
<aop:config>
<aop:aspect ref="audienceExampleTest2">
<aop:pointcut expression="execution(* my.chrispie.example.objects.Audience.perform(..))"
id="myPcId"/>
<aop:before method="takeSeats" pointcut-ref="myPcId"/>
<aop:around method="takeSeats" pointcut-ref="myPcId"/>
</aop:aspect>
</aop:config>
</beans>
和主類作爲
package my.chrispie.MyMavenSpringProject;
import my.chrispie.example.objects.Audience;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;
public class App
{
private car myCar1;
private car myCar2;
@Autowired
public car myCar3;
public car myCar4;
public static void main(String[] args)
{
System.out.println("Starting");
App app = new App();
app.testAOPExample1();
System.out.println("Ending");
}
public void testAOPExample1() {
ApplicationContext context = getAppContext();
Audience a = (Audience)context.getBean("audienceExampleTest1");
a.perform();
a.perform();
}
public ApplicationContext getAppContext() {
ApplicationContext context = new FileSystemXmlApplicationContext("src/main/resources/applicationContext.xml");
return context;
}
}
但是當我運行它，它給出了下面的輸出，而不表現出任何效果，即在徵求意見之前。
Starting
Feb 02, 2013 12:44:37 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.[email protected]2b3954b1: startup date [Sat Feb 02 00:44:37 CAT 2013]; root of context hierarchy
Feb 02, 2013 12:44:37 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from file [F:\DEV\EclipseWorkSpaces \STS1\MyMavenSpringProject\src\main\resources\applicationContext.xml]
Feb 02, 2013 12:44:37 AM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.springframework.beans.[email protected]: defining beans [audienceExampleTest1,audienceExampleTest2,org.springframework.aop.config.internalAutoProxy Creator,org.springframework.aop.aspectj.AspectJPointcutAdvisor#0,org.springframework.aop.aspectj.AspectJPointcutAdvisor#1,org.springframework.aop.aspectj.AspectJPointcutAdvisor#2,org.springframework.aop.aspectj.AspectJPointcutAdvisor#3,myPcId]; root of factory hierarchy
.............PERFORMING
.............PERFORMING
Ending
有誰知道爲什麼之前的建議是不會運行，爲什麼不給我一個錯誤
附加：另外它更容易使用AOP註釋，而不是XML配置文件，你也可以在你的takeSeats（）方法之前放置@Before「執行（* my.chrispie.example.objects.Audience.perform（..））」 –