SpringBoot AOP 简单实现

1.maven配置 <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <

1.maven配置

<dependencies>    <dependency>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-starter-web</artifactId>    </dependency><dependency><dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-test</artifactId>    <scope>test</scope></dependency><dependency>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-starter-aop</artifactId>    </dependency></dependencies>

2.新建TestAspect类

@Component@Aspectpublic class TestAspect {    public TestAspect() {        System.out.println("创建TestAspect成功");    }    //定义切点    @Pointcut("execution(* *.saying(..))")    public void say(){}//环绕通知。    @Around("say()")    public void sayAround(ProceedingJoinPoint pjp) throws Throwable{        System.out.println("环绕通知开始");        pjp.proceed();//执行方法        System.out.println("环绕通知结束");    }  @Before("say()")    public void sayBeFore(JoinPoint joinPoint) {        System.out.println("sayBeFore");        System.out.println("获取连接点方法运行时的入参列表:"+joinPoint.getArgs());        System.out.println("获取连接点的方法签名对象:"+joinPoint.getSignature());        System.out.println("获取连接点所在的目标对象:"+joinPoint.getTarget());    } @After("say()")    public void sayAfter(JoinPoint joinPoint) {        System.out.println("sayAfter");    }}

4.新建TestSayService

@Servicepublic class TestSayService {    public void saying(String src) {        System.out.println("saying:"+src);    }}

5.新建Test

@Componentpublic class Test {    @Autowired    TestSayService testSay;    @PostConstruct    public void init() {        testSay.saying("hello spingboot aop");    }}

 

6.新建SpringbootAopApplication

@SpringBootApplicationpublic class SpringbootAopApplication {    public static void main(String[] args) {        SpringApplication.run(SpringbootAopApplication.class, args);    }}

7.启动springboot，显示: 

创建TestAspect成功
环绕通知开始
sayBeFore
获取连接点方法运行时的入参列表:[Ljava.lang.Object;@2740e316
获取连接点的方法签名对象:void com.test.TestSayService.saying(String)
获取连接点所在的目标对象:com.test.TestSayService@5d342959
saying:hello spingboot aop
环绕通知结束
sayAfter