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  • SpringBoot项目中使用Aspect实现日志切面

    前言

    仔代码检视时,讨论到在controller层手动添加日志太麻烦,于是想要注解和切面实现日志的自动输出,简化代码、简练程序

    利用Aspect实现日志切面

    1、添加aop依赖

    <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-aop</artifactId>
    </dependency>

    2、定义注解作为切点

    @Target(ElementType.METHOD)
    @Retention(RetentionPolicy.RUNTIME)
    @Documented
    public @interface log {
        String value() default "";
    }

    3、声明切面,完成日志记录

    @Aspect  // 使用@Aspect注解声明一个切面
    @Component
    @Slf4j
    public class LogAspect {
    
        private static final String START = "start";
        private static final String END = "end";
    
        @Pointcut("@annotation(com.zh.live.aspect.log)")
        public void logPointCut() {}
    
    
        @Before("logPointCut()") //前置通知
        public void before(JoinPoint point) throws Throwable {
            try {
                printLog(point,START);
            } catch (Exception e) {
            }
        }
    
        @After("logPointCut()") //后置通知
        public void after(JoinPoint point) throws Throwable {
            try {
                printLog(point,END);
            } catch (Exception e) {
            }
        }
    
        private void printLog(JoinPoint joinPoint, String type) {
            MethodSignature signature = (MethodSignature) joinPoint.getSignature();
            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
            String beginTime = dateFormat.format(new Date());
            //请求的 类名、方法名
            String className = joinPoint.getTarget().getClass().getName();
            String methodName = signature.getName();
            //请求的参数
            Object[] args = joinPoint.getArgs();
            //打印日志
            log.info("{} {} {} | time: {} param: {} " , className,methodName,type,beginTime,args);
    
        }
    
    }

    4、在controller中需要添加日志的方法上添加@log注解

    @log
        @PostMapping("/registerUser")
        public R registerUser(@RequestBody UserTo user) 

    5、postman发送请求进行测试

     

    至此,日志切面就完全结束了,我这里写的比较简单,大家也可以任意扩展

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  • 原文地址:https://www.cnblogs.com/houchen/p/15472488.html
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