我是 AOP 新手。读《 Spring 在行动》一书。其中有 AOP 章节和示例。我用 XML 做了它,一切都很好。有一个 Aspects 带注释配置的例子。我按照书上的方法做了一合一,但是不行。请帮忙。
错误:
Exception in thread "main" org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'guitar' defined in class path resource [springIdolBeansAnnotation.xml]:
Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: error at ::0 c
an't find referenced pointcut performance
包含名为 springIdolBeansAnnotation.xml 的 bean 的文件:
<?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-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<bean id="guitar" class="com.springinaction.springidol.Guitar"/>
<aop:aspectj-autoproxy/>
<bean id="kenny2" class="com.springinaction.springidol.Instrumentalist">
<property name="song" value="Jingle B"/>
<property name="instrument" ref="guitar"/>
</bean>
<bean id="audience" class="com.springinaction.springidol.Audience"/>
</beans>
文件吉他:
package com.springinaction.springidol;
public class Guitar implements Instrument {
@Override
public void play() {
System.out.println("Guitar playing");
}
}
文件乐器演奏家:
package com.springinaction.springidol;
public class Instrumentalist implements Performer {
private String song;
private Instrument instrument;
public Instrumentalist(){}
@Override
public void perform() throws Exception {
System.out.println("Playing "+song + " : ");
instrument.play();
}
public String getSong() {
return song;
}
public void setSong(String song) {
this.song = song;
}
public String screamSong(){
return song;
}
public void setInstrument(Instrument instrument) {
this.instrument = instrument;
}
}
文件受众(方面):
package com.springinaction.springidol;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
@Aspect
public class Audience {
@Pointcut("execution(* com.springinaction.springidol.Performer.perform(..))")
public void performance(){}
@Before("performance()")
public void takeSeats(){
System.out.println("The audience is takig their seats");
}
@Before("performance()")
public void turnOffCellPhones(){
System.out.println("The audience is turning off their cellphones");
}
@AfterReturning("performance()")
public void applaud(){
System.out.println("CLAP CLAP CLAP CLAP CLAP");
}
@AfterThrowing("performance()")
public void demandRefund(){
System.out.println("Boo! We want our money back");
}
@Around("performance()")
public void watchPerformance(ProceedingJoinPoint joinpoint){
try {
System.out.println("Theaudienceistakingtheirseats.");
System.out.println("Theaudienceisturningofftheircellphones");
long start=System.currentTimeMillis();
joinpoint.proceed();
long end=System.currentTimeMillis();
System.out.println("CLAP CLAP CLAP CLAP CLAP");
System.out.println("Theperformancetook"+(end-start)
+ "milliseconds.");
} catch(Throwable t){
System.out.println("Boo!Wewantourmoneyback!");
}
}
}
主文件:
package com.springinaction.springidol;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class SpringIdolMain {
public static void main(String[] args) {
ApplicationContext ctx = new ClassPathXmlApplicationContext("springIdolBeansAnnotation.xml");
Performer performer = (Performer) ctx.getBean("kenny2");
try {
performer.perform();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
最佳答案
是的,这可能是因为旧 jar 。我假设您使用 spring 3.x jars 和 confiduration 。尝试使用最新的 jar
几天前我遇到了类似的问题,org.springframework.beans.factory.BeanCreationException:创建bean时出错
就我而言,这是旧 jar 的问题 My issue
您可以尝试使用最新的 jar 运行您的应用吗:
aopalliance-1.0.jar
asm-3.3.1.jar
aspectj-1.7.1.jar
aspectjrt-1.7.0.jar
aspectjweaver-1.7.0.jar
cglib-2.2.2.jar
关于java - 嵌套异常是 java.lang.IllegalArgumentException: error at::0 找不到引用的切入点,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/12502498/