Java自定义注解结合AOP_java自定义注解实现aop

1.引入依赖

 <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-web</artifactId>
     <version>${spring-boot-version}</version>
</dependency>
<dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-aop</artifactId>
     </dependency>
<dependency>
     <groupId>com.alibaba</groupId>
     <artifactId>fastjson</artifactId>
     <version>${fastjson.version}</version>
</dependency>
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2.定义注解

@Target({ElementType.METHOD, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface Log {

    String title() default "";
    OperType type() default OperType.OTGER;
    
}
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3定义切面

@Aspect
public class LogAspect {
    @Pointcut("@annotation(log)")
    public void webLog(Log log) {}

    @Before("webLog(log)")
    public void doBefore(JoinPoint joinPoint, Log log) {// 打印请求日志
        System.out.println("before" + log);
    }

    @AfterReturning(returning = "ret", pointcut = "webLog(log)")
    public void doAfterReturning(Object ret, Log log) {// 打印响应结果日志
        System.out.println("doAfterReturning" + log);
    }
}
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4.使用注解

@RestController
public class TestController {

    @GetMapping("test")
    @Log(title = "测试", type = OperType.GET)
    public String test() {
        return "hello";
    }
    
}
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5.效果