SpringAOP 设置注入的实现步骤

    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.3.5</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>5.3.5</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.6</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/aopalliance/aopalliance -->
        <dependency>
            <groupId>aopalliance</groupId>
            <artifactId>aopalliance</artifactId>
            <version>1.0</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

public interface VisitService {
    //用于实现前置通知，后置通知，异常通知，最终通知
    void visit(String str) throws Exception;

    //用于实现环绕通知
    void around();
}

public class VisitServiceImpl implements VisitService {
    //前置，后置，最终，异常通知的增强类
    public void visit(String str) throws Exception{
        System.out.println(str);
        if(!str.equalsIgnoreCase("agree")){
            throw new Exception("非法访问");
        }
    }
    //环绕通知的增强类
    public void around() {
        System.out.println("环绕通知");
    }
}

public class VisitAspect {
    //前置通知
    public void visitBefore(JoinPoint joinPoint){
        System.out.println("口令：");
    }
    //最终通知，无论是否报错，都执行
    public void visitAfter(JoinPoint joinPoint){
        System.out.println("输入完成");
    }
    //后置通知报错不执行
    public void visitSuccess(JoinPoint joinPoint){
        System.out.println("请求成功，欢迎");
    }
    //异常通知，报错后执行
    public void visitThrow(JoinPoint joinPoint, Throwable ex){
        System.out.println("请求失败，拒绝");
    }
    //环绕通知，如果报错只执行前一句
    public Object visitAround(ProceedingJoinPoint proceedingJoinPoint) throws Throwable{
        System.out.println("-------环绕-------");
        Object obj = proceedingJoinPoint.proceed();
        System.out.println("-------环绕-------");
        return obj;
    }
}

    <bean id="userDao" class="Spring_AOP.service.impl.VisitServiceImpl"></bean>
    <bean id="aspect" class="Spring_AOP.service.VisitAspect"></bean>
    
    <aop:config>
        <aop:pointcut id="pointcut" expression="execution(* Spring_AOP.service.impl.VisitServiceImpl.visit(..))"/>
        <aop:pointcut id="pointcut1" expression="execution(* Spring_AOP.service.impl.VisitServiceImpl.around())"/>
        <aop:aspect ref="aspect">
             <aop:before method="visitBefore" pointcut-ref="pointcut"></aop:before>
             <aop:after method="visitAfter" pointcut-ref="pointcut"></aop:after>
             <aop:after-returning method="visitSuccess" pointcut-ref="pointcut"></aop:after-returning>
             <aop:around method="visitAround" pointcut-ref="pointcut1"></aop:around>
             <!-- 报错后执行aop:after-throwing -->
             <aop:after-throwing method="visitThrow" pointcut-ref="pointcut" throwing="ex"></aop:after-throwing>
         </aop:aspect>
    </aop:config>

 public class visitTest {
    @Test
    public void VisitTest(){
        ApplicationContext app = new ClassPathXmlApplicationContext("applicationContext_AOP.xml");
        VisitService visitService = app.getBean(VisitService.class);
        try {
            visitService.visit("agree");
        } catch (Exception e) {
            e.printStackTrace();
        }
        try {
            visitService.visit("ok");
        } catch (Exception e) {
            e.printStackTrace();
        }
        visitService.around();
    }
}