springboot+aop簡單日誌入門

關於如何集成springboot請C友自行搜索，本人在IDEA上已經集成了springboot，下面直接開始簡單的aop日誌入門。

聲明：代碼部分只展示部分關鍵代碼！！！

1.首先在maven項目中pom.xml文件中引入下面jar包

<!--引入AOP依賴Start-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--AspectJ-->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.6.11</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.2</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/cglib/cglib -->
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib</artifactId>
            <version>3.2.5</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>5.1.4.RELEASE</version>
        </dependency>
        <!--引入AOP依賴End-->

2.引入完成後更新maven倉庫，詳細操作請自行搜索。

3.在需要多個package下的多個特定方法中使用aop記錄日誌時可以自定義註解

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * 自定義Log註解
 */
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface Log {
    String value() default "";
}

4.編寫切面類

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
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 javax.servlet.http.HttpSession;
import java.util.Arrays;
import java.util.Date;

/**
 * 切面類
 */
@Aspect
@Component
public class LogAspect {
    private Logger logger = LoggerFactory.getLogger(LogAspect.class);
    @Autowired
    private ILogService logService;
    /**
     * 定義切入點，切入點爲Log標識的所有方法
     */
    @Pointcut("@annotation(Log)")
    public void webLog(){}

    /**
     * 前置通知：在連接點之前執行的通知
     * @param joinPoint
     * @throws Throwable
     */
     @Before("webLog()")
     public void doBefore(JoinPoint joinPoint) throws Throwable{

      }

    /**
     * 後置通知：在連接點之後執行的通知
     * @param joinPoint
     * @param ret
     * @throws Throwable
     */
    @AfterReturning(returning = "ret",pointcut = "webLog()")
    public void doAfterReturning(JoinPoint joinPoint, Result ret) throws Throwable {

        // 接收到請求，記錄請求內容
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        HttpSession session = request.getSession();

        Arrays.toString(joinPoint.getArgs());
        // 記錄下請求內容
        logger.info("URL : " + request.getRequestURL().toString());
        logger.info("HTTP_METHOD : " + request.getMethod());
        logger.info("IP : " + request.getRemoteAddr());
        logger.info("CLASS_METHOD : " + joinPoint.getSignature().getDeclaringTypeName() + "." + joinPoint.getSignature().getName());
        logger.info("reviewUser : " + session.getAttribute("reviewUser").toString());
        logger.info("review : " + session.getAttribute("review"));
        logger.info("review : " + session.getAttribute("message"));
        logger.info("ARGS : " + Arrays.toString(joinPoint.getArgs()));
        // 處理完請求，返回內容
        logger.info("RESPONSE : " + ret.getMessage());
        //記錄日誌
        MyLog myLog = new MyLog();
        User user = (User) session.getAttribute("reviewUser");
        myLog.setAccount(user.getAccount());
        myLog.setUser_name(user.getName());
        Questionaire questionaire = (Questionaire)session.getAttribute("review");
        myLog.setReview_name(questionaire.getReviewName());
        myLog.setIP(request.getRemoteAddr());
        myLog.setHandle_time(TimeFormat.getLongTime(new Date()));
        myLog.setMessage(ret.getMessage().toString());

        logService.addLog(myLog);
    }



}

5.調用service方法，執行數據庫操作。

注：以上代碼會有空指針異常的錯誤，只需要在記錄日誌的代碼外面包裹一層try-catch代碼塊即可。

希望本人經驗對大家有幫助。