java 在遵循有关 Spring Aspect 编程的 JavaBrains 教程时，我收到以下异常：

I'm getting the following exception when following the JavaBrains tutorial on Spring Aspect Programming:

提问by Felipe

I'm following the spring aspect programming tutorials at Javabrains. I'm in this tutorial specifically: http://javabrains.koushik.org/2011/08/spring-tutorial-27-writing-our-first.htmlI have the required libraries imported into the project and I get no warnings from the IDE, but when I run the code I get the following Exception:

我正在关注 Javabrains 的 spring 方面编程教程。我专门在本教程中：http: //javabrains.koushik.org/2011/08/spring-tutorial-27-writing-our-first.html我已将所需的库导入到项目中，但没有收到任何警告IDE，但是当我运行代码时，出现以下异常：

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'triangle' defined in class path resource [spring.xml]: BeanPostProcessor before instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: org/aspectj/weaver/tools/PointcutDesignatorHandler
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:452)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:294)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at org.koushik.javabrains.AopMain.main(AopMain.java:18)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.lang.NoClassDefFoundError: org/aspectj/weaver/tools/PointcutDesignatorHandler
at org.springframework.aop.aspectj.annotation.ReflectiveAspectJAdvisorFactory.getPointcut(ReflectiveAspectJAdvisorFactory.java:145)
at org.springframework.aop.aspectj.annotation.ReflectiveAspectJAdvisorFactory.getAdvisor(ReflectiveAspectJAdvisorFactory.java:130)
at org.springframework.aop.aspectj.annotation.ReflectiveAspectJAdvisorFactory.doWith(ReflectiveAspectJAdvisorFactory.java:74)
at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:473)
at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:451)
at org.springframework.aop.aspectj.annotation.ReflectiveAspectJAdvisorFactory.getAdvisors(ReflectiveAspectJAdvisorFactory.java:70)
at org.springframework.aop.aspectj.annotation.BeanFactoryAspectJAdvisorsBuilder.buildAspectJAdvisors(BeanFactoryAspectJAdvisorsBuilder.java:109)
at org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator.findCandidateAdvisors(AnnotationAwareAspectJAutoProxyCreator.java:86)
at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.shouldSkip(AspectJAwareAdvisorAutoProxyCreator.java:107)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessBeforeInstantiation(AbstractAutoProxyCreator.java:278)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:880)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:852)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:446)
... 15 more
Caused by: java.lang.ClassNotFoundException: org.aspectj.weaver.tools.PointcutDesignatorHandler
at java.net.URLClassLoader.run(URLClassLoader.java:366)
at java.net.URLClassLoader.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 28 more
Process finished with exit code 1

My class files and spring.xml:

我的类文件和 spring.xml：

Main class:

主类：

package org.koushik.javabrains;

import org.koushik.javabrains.service.ShapeService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;


public class AopMain {

    public static void main (String[] args) {

        ApplicationContext ctx = new ClassPathXmlApplicationContext("spring.xml");
        ShapeService shapeService = ctx.getBean("shapeService",ShapeService.class);
        System.out.println(shapeService.getCircle().getName());
    }
}

ShapeService Class:

形状服务类：

package org.koushik.javabrains.service;

import org.koushik.javabrains.model.Circle;
import org.koushik.javabrains.model.Triangle;


public class ShapeService {

    private Circle circle;
    private Triangle triangle;

    public Circle getCircle() {
        return circle;
    }

    public void setCircle(Circle circle) {
        this.circle = circle;
    }

    public Triangle getTriangle() {
        return triangle;
    }

    public void setTriangle(Triangle triangle) {
        this.triangle = triangle;
    }
}

The Circle class:

圆类：

package org.koushik.javabrains.model;

public class Circle {

    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

Triangle class:

三角形类：

package org.koushik.javabrains.model;

public class Triangle {

    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

LoggingAspect class:

LoggingAspect 类：

package org.koushik.javabrains.aspect;

import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;

@Aspect
public class LoggingAspect {

    @Before("execution(public String getName())")
    public void loggingAdvice(){
        System.out.println("Advice run. Get Method called");
    }
}

spring.xml:

弹簧.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"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       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-3.1.xsd
                      http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">

    <aop:aspectj-autoproxy/>

    <bean name="triangle" class="org.koushik.javabrains.model.Triangle">
        <property name="name" value="triangle"/>
    </bean>

    <bean name="circle" class="org.koushik.javabrains.model.Circle">
        <property name="name" value="circle"/>
    </bean>

    <bean name="shapeService" class="org.koushik.javabrains.service.ShapeService"   autowire="byName"/>

    <bean name="loggingAspect" class="org.koushik.javabrains.aspect.LoggingAspect"/>

</beans>

I have read through the comments on the tutorial page, and I have tried with different jars, but non of them seem to work. I always end up with the same exception.

我已经通读了教程页面上的评论，并尝试了不同的 jars，但它们似乎都不起作用。我总是以同样的例外告终。

回答by Tomasz Nurkiewicz

Caused by: java.lang.NoClassDefFoundError: org/aspectj/weaver/tools/PointcutDesignatorHandler

引起：java.lang.NoClassDefFoundError: org/aspectj/weaver/tools/PointcutDesignatorHandler

You must add aspectjweaver.jarto your CLASSPATH. How to do it precisely depends on your IDE.

您必须添加aspectjweaver.jar到您的 CLASSPATH。如何做到这一点取决于您的 IDE。

回答by ACV

If using maven add this or any version you need:

如果使用 maven 添加此版本或您需要的任何版本：

<dependency>
    <groupId>org.aspectj</groupId>
    <artifactId>aspectjweaver</artifactId>
    <version>1.8.6</version>
</dependency>