springboot aop

首先一个springboot项目需要一个带main方法的类，然后这个类需要注解，还需要继承

@SpringBootApplication
public class ApplicationMain implements CommandLineRunner {
    public static void main(String[] args) {
        SpringApplication.run(ApplicationMain.class, args);
    }

    @Override
    public void run(String... args) throws Exception {
        System.out.println("run...");
    }
}

其次定义aspect要注意注解的使用

@Aspect
@Component
public class Aspect1 {

    @Pointcut("@annotation(com.dick.job.annotation.Annotation1)")
    public void pointcut1() {
    }

    @AfterReturning(returning = "result", value = "pointcut1()")
    public void aspectFunction1(JoinPoint joinPoint, Object result) throws Throwable {
        System.out.println("返回值：" + result);

        String className = joinPoint.getTarget().getClass().getName();
        String methodName = joinPoint.getSignature().getName();
        System.out.println(className + "  " + methodName);

        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        Method method = signature.getMethod();
        Annotation1 annotation1 = method.getAnnotation(Annotation1.class);
        System.out.println(annotation1.idName());

        for (Object arg : joinPoint.getArgs()) {
            System.out.println("args: " + arg);
        }
    }

    @Around("@annotation(com.dick.job.annotation.Annotation1)")
    public String aroundFunction(ProceedingJoinPoint joinPoint) throws Throwable {
        long beginTime = System.currentTimeMillis();
        //执行方法
        Object result = joinPoint.proceed();
        //执行时长(毫秒)
        long time = System.currentTimeMillis() - beginTime;

        System.out.println(time);

        return result.toString() + time;
    }

}

还有test的使用，

package com.dick.job;	//test/java目录下的包结构要和main/java目录下的包结构一样
@SpringBootTest
public class utilTest {

    @Autowired
    Class1 class1;

    @Test
    public void test1() {
        class1.testFunction1("dic", "pus", 3);
    }
}

上面的问题花了我一天，百度太难用了，浪费生命
给你看看测试函数

@Component
@Log4j2
public class Class1 {
    
    @Annotation1(idName = "testFunction1")
    public String testFunction1(String a, String b, int c) {
        log.trace("dick...");
        for (int i=0; i 
和annotation定义
 
package com.dick.job.annotation;

import java.lang.annotation.*;

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
@documented
public @interface Annotation1 {
    String idName() default "id1";
}

 
结果
 **
 2021-10-29 16:12:01.550 [main] TRACE com.dick.job.utils.Class1 - dick…
 dic pus
 dic pus
 dic pus
 9
 返回值：asldkasdfasdlkfjas;ldkjfalsdjf;lasjfdlkasjf9
 com.dick.job.utils.Class1 testFunction1
 testFunction1
 args: dic
 args: pus
 args: 3
 **