spring aop 报错：Caused by: java.lang.IllegalArgumentException: error at ::0 formal unbound in pointcut

╰半夏微凉° 2022-06-01 07:17 186阅读 0赞

刚把上一个aop bug解决了，继续下一步，又出错了，调了一天的bug，不过收获还是很大的，对spring aop有了更深的了解！

这次出的错误代码如下：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService' defined in file [E:\eclipse\workspace\maven\target\classes\com\bjsd\aop\service\impl\UserServiceImpl.class]: 
      Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: error at ::0 formal unbound in pointcut 
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:547)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
    	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
    	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
    	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
    	at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:296)
    	at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:985)
    	at com.bjsd.test.aoptest.Test(aoptest.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:606)
    	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
    	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
    Caused by: java.lang.IllegalArgumentException: error at ::0 formal unbound in pointcut 
    	at org.aspectj.weaver.tools.PointcutParser.parsePointcutExpression(PointcutParser.java:319)
    	at org.springframework.aop.aspectj.AspectJExpressionPointcut.buildPointcutExpression(AspectJExpressionPointcut.java:206)
    	at org.springframework.aop.aspectj.AspectJExpressionPointcut.checkReadyToMatch(AspectJExpressionPointcut.java:192)
    	at org.springframework.aop.aspectj.AspectJExpressionPointcut.getClassFilter(AspectJExpressionPointcut.java:169)
    	at org.springframework.aop.support.AopUtils.canApply(AopUtils.java:208)
    	at org.springframework.aop.support.AopUtils.canApply(AopUtils.java:262)
    	at org.springframework.aop.support.AopUtils.findAdvisorsThatCanApply(AopUtils.java:294)
    	at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findAdvisorsThatCanApply(AbstractAdvisorAutoProxyCreator.java:118)
    	at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findEligibleAdvisors(AbstractAdvisorAutoProxyCreator.java:88)
    	at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.getAdvicesAndAdvisorsForBean(AbstractAdvisorAutoProxyCreator.java:69)
    	at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:376)
    	at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:339)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:421)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1558)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
    	... 31 more

百度告诉我说这是 在使用注解配置spring aop advice（通知）时参数配置错误；

出错的代码如下：

/**
     * 定义一个Transaction切面类 测试after,before,around,throwing,returning Advice.
     * 
     * @author you
     * 
     *         TODO
     */
    @Aspect
    // 声明该类是切面类
    @Component
    // 配置文件中启动自动扫描功能,将该切面交给spring 去管理
    public class Transaction {
    
      private transient static Logger logger = LoggerFactory.getLogger(Transaction.class);
      // 定义切点
      @Pointcut("execution(* com.bjsd.aop.service.*.*(..))")
      public void allMethod() {
       };
    /**
       * 核心业务逻辑调用正常退出后，不管是否有返回值，正常退出后，均执行此Advice
       * 
       * 
       * 
       * @param joinPoint
       */
       @AfterReturning("allMethod()")
       private void doReturn(JoinPoint joinPoint) {
       System.out.println("-----doReturn().invoke-----");
       System.out.println(" 此处可以对返回值做进一步处理");
       System.out.println(" 可通过joinPoint来获取所需要的内容");
       System.out.println("-----End of doReturn()------");
       }
    
      /**
       * 核心业务逻辑调用异常退出后，执行此Advice，处理错误信息
       * 
       * @param joinPoint
       * @param ex
       */
       @AfterThrowing("allMethod()")
       private void doThrowing(JoinPoint joinPoint, Throwable ex) {
       System.out.println("-----doThrowing().invoke-----");
       System.out.println(" 错误信息：" + ex.getMessage());
       System.out.println(" 此处意在执行核心业务逻辑出错时，捕获异常，并可做一些日志记录操作等等");
       System.out.println(" 可通过joinPoint来获取所需要的内容");
       System.out.println("-----End of doThrowing()------");
       }
    }

错误的愿意是：注解@AfterReturning和@AfterThrowing对应spring aop advice（通知）中都有一个形式参数，这个形式参数对应的是目标方法执行结束后返回的参数；所以还要配置这两个通知的参数；

修改后的代码如下：

/**
       * 核心业务逻辑调用正常退出后，不管是否有返回值，正常退出后，均执行此Advice
       * 
       * 
       * 
       * @param joinPoint
       */
       @AfterReturning(value = "allMethod()", returning = "result")
       private void doReturn(JoinPoint joinPoint, Object result) {
       System.out.println("-----doReturn().invoke-----");
       System.out.println(" 此处可以对返回值做进一步处理");
       System.out.println("输出的返回值为+" + result);
       System.out.println(" 可通过joinPoint来获取所需要的内容");
       System.out.println("-----End of doReturn()------");
       }
    
      /**
       * 核心业务逻辑调用异常退出后，执行此Advice，处理错误信息
       * 
       * @param joinPoint
       * @param ex
       */
       @AfterThrowing(value = "allMethod()", throwing = "ex")
       private void doThrowing(JoinPoint joinPoint, Throwable ex) {
       System.out.println("-----doThrowing().invoke-----");
       System.out.println(" 错误信息：" + ex.getMessage());
       System.out.println(" 此处意在执行核心业务逻辑出错时，捕获异常，并可做一些日志记录操作等等");
       System.out.println(" 可通过joinPoint来获取所需要的内容");
       System.out.println("-----End of doThrowing()------");
       }

也写完博客了也下班了，走喽！朋友们有啥见解请留言！