（7）学习SpringBoot 之 AOP

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1.pom.xml 引入依赖包，并创建启动类

<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><!--引入父标签 --><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.5.7.RELEASE</version></parent><groupId>cn.moye</groupId><artifactId>spring-boot-aop</artifactId><version>0.0.1-SNAPSHOT</version><packaging>jar</packaging><name>spring-boot-aop</name><url>http://maven.apache.org</url><dependencies><!-- web 依赖 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!-- aop 依赖 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-aop</artifactId></dependency><!-- 热部署依赖 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-loader</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId></dependency></dependencies><!-- maven插件 --><properties><jdk.version>1.8</jdk.version><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><build><finalName>spring-boot-aop</finalName><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><configuration><srouce>${jdk.version}</srouce><target>${jdk.version}</target><encoed>${project.build.sourceEncoding}</encoed></configuration></plugin></plugins></build></project>

2.编写切面测试类

package cn.moye.springboot.aspect;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import org.aspectj.lang.JoinPoint;import org.aspectj.lang.annotation.After;import org.aspectj.lang.annotation.Aspect;import org.aspectj.lang.annotation.Before;import org.aspectj.lang.annotation.Pointcut;import org.springframework.context.annotation.Configuration;/** * 定义切面 *  */@Aspect@Configurationpublic class LoggerAopConfig {private static Log logger = LogFactory.getLog(LoggerAopConfig.class);/** * 定义切入点：拦截cn.moye.springboot.controller包以及子包下的所有类 */@Pointcut("execution(* cn.moye.springboot.controller..*.*(..))")public void executeSystem() {}/** * 前置通知 * @param point 目标类连接点对象 */@Before("executeSystem()")public void invokeBefore(JoinPoint point) {logger.info("调用------" + getClassName(point) + " 执行 " + getMethodName(point) + " 方法之前");}/** * 后置通知 * @param point 目标类连接点对象 */@After("executeSystem()")public void invokeAfter(JoinPoint point) {logger.info("调用------" + getClassName(point) + " 执行 " + getMethodName(point) + " 方法之后");}/** * 获取被代理对象的类全名 *  * @param point * @return */private String getClassName(JoinPoint point) {return point.getTarget().getClass().getName();}/** * 获取方法名 *  * @param point * @return */private String getMethodName(JoinPoint point) {return point.getSignature().getName();}}

3.编写控制器测试类

package cn.moye.springboot.controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;/** * controller测试类 */@RestControllerpublic class AopController {@RequestMapping("/aop")public String testAop() {return "test Aop";}@RequestMapping("/test")public String testAop1(){return "Aop Test";}}

4.测试结果

2017-09-29 10:24:29.480  INFO 3984 --- [nio-8080-exec-1] c.m.springboot.aspect.LoggerAopConfig    : 调用------cn.moye.springboot.controller.AopController 执行 testAop 方法之前2017-09-29 10:24:29.488  INFO 3984 --- [nio-8080-exec-1] c.m.springboot.aspect.LoggerAopConfig    : 调用------cn.moye.springboot.controller.AopController 执行 testAop 方法之后

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