SpirngMVC AOP 用注解方式配置切面及IllegalArgumentException: error at ::0 formal unbound in pointcut 异常分析
MEAVN代码
<!-- springAOP核心包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>4.0.2.RELEASE</version> </dependency> <!--使用AspectJ方式注解需要相应的包--> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>1.8.9</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.8.9</version> </dependency>
注意:此处版本号一定要与JDK兼容 否则会报error at ::0 can't find referenced pointcut pointCutName 错误
spring-mvc.xml 配置
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd ">
<!-- 启用AsjectJ支持 -->
<aop:aspectj-autoproxy proxy-target-class="true" />
注意:下划线是必须配置的项
注解类配置
import org.apache.log4j.Logger; import org.aspectj.lang.JoinPoint; import org.aspectj.lang.ProceedingJoinPoint; import org.aspectj.lang.annotation.After; 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; import org.springframework.stereotype.Component; /** * 采用注解形式进行AOP定义*/ @Aspect //该标签把LoggerAspect类声明为一个切面 @Component //该标签把LoggerAspect类放到IOC容器中 public class LogAopAction { /** * execution:用来匹配执行方法的连接点 * A:@Pointcut("execution(* com.aijava.springcode.service..*.*(..))") * 第一个*表示匹配任意的方法返回值,..(两个点)表示零个或多个,上面的第一个..表示service包及其子包,第二个*表示所有类,第三个*表示所有方法,第二个..表示方法的任意参数个数 * B:@Pointcut("within(com.aijava.springcode.service.*)") * within限定匹配方法的连接点,上面的就是表示匹配service包下的任意连接点 * C:@Pointcut("this(com.aijava.springcode.service.UserService)") * this用来限定AOP代理必须是指定类型的实例,如上,指定了一个特定的实例,就是UserService * D:@Pointcut("bean(userService)") * bean也是非常常用的,bean可以指定IOC容器中的bean的名称 * @within(org.springframework.stereotype.Service),拦截带有 @Service 注解的类的所有方法 * @annotation(org.springframework.web.bind.annotation.RequestMapping),拦截带有@RquestMapping的注解方法 */ @Pointcut("execution(* com.cn.xxx..*.*(..))")//把指定包路径下所有方法都进行匹配 private void pointCut() { } /** * 方法开始执行 */ @Before("pointCut()") public void doBefore(JoinPoint point) { Class clazz = point.getTarget().getClass(); String targetName = clazz.getSimpleName(); String methodName = point.getSignature().getName(); Logger logger = Logger.getLogger(clazz); Object[] args = point.getArgs(); StringBuilder formatLog = new StringBuilder( "进入方法 " + clazz.getPackage().getName() + targetName + "." + methodName + ",参数是:"); for (Object ignored : args) { formatLog.append("{},"); } logger.info(formatLog.toString()+args); }/** * 方法结束执行后的操作 */ @AfterReturning(pointcut = "pointCut()", returning = "returnVal") public void doAfter(JoinPoint point, Object returnVal) { Class clazz = point.getTarget().getClass(); String targetName = clazz.getSimpleName(); String methodName = point.getSignature().getName(); String logString = "退出方法: " + targetName + "." + methodName + ",返回结果是: " + returnVal; Logger logger = Logger.getLogger(clazz); logger.info(logString); } /** * 方法有异常时的操作 */ @AfterThrowing(pointcut = "pointCut()", throwing = "error") public void doAfterThrow(JoinPoint point, Throwable error) { Class clazz = point.getTarget().getClass(); String targetName = clazz.getSimpleName(); String methodName = point.getSignature().getName(); Logger logger = Logger.getLogger(clazz); String logString = " 异常发生在方法: " + targetName + "." + methodName + ",异常为 : "; logger.error(logString, error); } /** * AOP环绕方法执行 * @param pjp * @return * @throws Throwable */ @Around("pointCut()") public void around(ProceedingJoinPoint proceedingJoinPoint) throws Throwable { try { proceedingJoinPoint.proceed(); }catch (Exception e) { e.toString(); } } }
注意:红色部分的一定要对应如果不对应就会报 IllegalArgumentException: error at ::0 formal unbound in pointcut 错误 ,这个错误我排查了好久发现,项目一直启动错误,切记参数一定要对应.