记一个接口的切面及异常处理

切面主要记录传参和返回值，代码如下：

import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.util.Arrays;


/**
 * controller 切面
 * @author yuhao
 **/
@Slf4j
@Aspect
@Component
public class HttpLogAspect {


    /**
     * 两个..代表所有子目录，最后括号里的两个..代表所有参数
     */
    @Pointcut("execution(public * com.xx.controller..*.*(..))")
    public void logPointCut() {

    }

    @Before("logPointCut()")
    public void doBefore(JoinPoint joinPoint) throws Throwable {
        // 接收到请求，记录请求内容
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        // 记录下请求内容
        log.info("请求地址 : " + request.getRequestURL().toString());
        log.info("HTTP方法 {} ,IP地址 {} ,contentType: {}", request.getMethod(), request.getRemoteAddr() , request.getContentType());
        log.info("类名 {}", joinPoint.getSignature().getDeclaringTypeName() + "." + joinPoint.getSignature().getName());
        log.info("请求参数 {}", Arrays.toString(joinPoint.getArgs()));
    }

    /**
     * returning的值和doAfterReturning的参数名一致
     */
    @AfterReturning(returning = "ret", pointcut = "logPointCut()")
    public void doAfterReturning(Object ret) {
        log.info("返回值: {}", ret);
    }

    @Around("logPointCut()")
    public Object doAround(ProceedingJoinPoint pjp) throws Throwable {
        long startTime = System.currentTimeMillis();
        // ob 为方法的返回值
        Object ob = pjp.proceed();
        log.info("耗时 {}", (System.currentTimeMillis() - startTime));
        return ob;
    }

    @Async
    public void log(String httpWrapper) {
        // 日志入库
    }

}

异常处理：

import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;

/**
 * @author  yuhao
 * @date  20-4-22 下午3:35
 * @version  V1.0
 **/
@Slf4j
@ControllerAdvice
public class ExpHandler {


    @ExceptionHandler(Exception.class)
    public ResponseEntity handleException(Exception e) {
        log.error("",e);
        //SdkAuthResp此类是使用lombok注解的建造者模式的类，返回的状态码使用枚举
        SdkAuthResp build = SdkAuthResp.builder().status(1001).build();
        return new ResponseEntity<>(build, HttpStatus.OK);
    }

    //ParamNullException是自定义的异常类
    @ExceptionHandler(ParamNullException.class)
    public ResponseEntity<SdkAuthResp> handleException(ParamNullException e) {
        log.error("",e);
        SdkAuthResp build = SdkAuthResp.builder().status(1002).build();
        return new ResponseEntity<>(build, HttpStatus.CREATED);
    }

}