SpringBoot 集成Log4j与AOP

一、SpringBoot 集成Log4j

SpringBoot 日志系统默认使用 logback。集成log4j方法很简单：

1、修改pom.xml文件，过滤掉自带的 spring-boot-starter-logging，然后添加spring-boot-starter-log4j依赖包：

        
            org.springframework.boot
            spring-boot-starter
            
                
                
                    org.springframework.boot
                    spring-boot-starter-logging
                
            
        

        
            org.springframework.boot
            spring-boot-starter-log4j
            1.3.8.RELEASE
        

2、在 resources 目录下新建 log4j.properties 配置文件

log4j.rootLogger=info,error,CONSOLE,DEBUG
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender     
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout     
log4j.appender.CONSOLE.layout.ConversionPattern=%d{yyyy-MM-dd-HH-mm} [%t] [%c] [%p] - %m%n     
log4j.logger.info=info
log4j.appender.info=org.apache.log4j.DailyRollingFileAppender
log4j.appender.info.layout=org.apache.log4j.PatternLayout     
log4j.appender.info.layout.ConversionPattern=%d{yyyy-MM-dd-HH-mm} [%t] [%c] [%p] - %m%n  
log4j.appender.info.datePattern='.'yyyy-MM-dd
log4j.appender.info.Threshold = info   
log4j.appender.info.append=true   
log4j.appender.info.File=d://log4j/logs/api_services_info.log
log4j.logger.error=error  
log4j.appender.error=org.apache.log4j.DailyRollingFileAppender
log4j.appender.error.layout=org.apache.log4j.PatternLayout     
log4j.appender.error.layout.ConversionPattern=%d{yyyy-MM-dd-HH-mm} [%t] [%c] [%p] - %m%n  
log4j.appender.error.datePattern='.'yyyy-MM-dd
log4j.appender.error.Threshold = error   
log4j.appender.error.append=true   
log4j.appender.error.File=d://log4j/logs/error/api_services_error.log
log4j.logger.DEBUG=DEBUG
log4j.appender.DEBUG=org.apache.log4j.DailyRollingFileAppender
log4j.appender.DEBUG.layout=org.apache.log4j.PatternLayout     
log4j.appender.DEBUG.layout.ConversionPattern=%d{yyyy-MM-dd-HH-mm} [%t] [%c] [%p] - %m%n  
log4j.appender.DEBUG.datePattern='.'yyyy-MM-dd
log4j.appender.DEBUG.Threshold = DEBUG   
log4j.appender.DEBUG.append=true   
log4j.appender.DEBUG.File=d://log4j/logs/debug/api_services_debug.log

3、打印日志的测试java类：

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class IndexController {
    private static final Logger logger = LoggerFactory.getLogger(IndexController.class);

    @ResponseBody
    @GetMapping(value = "/index")
    public String index(){
        logger.info("IndexController 日志信息");
        return "IndexController";
    }
}

  

 

二、Aop 统一处理Web请求日志

     传送门：spring切面编程AOP  切入点表达式参考：AspectJ切入点语法详解

• @Aspect     声明该类为 切面类
• @Order(2)   当同一个目标方法有多个切面的时，哪个切面类先执行，取决于order的值，值越小越优先执行)
• @Before 前置通知（在目标方法执行之前执行）
• @After 后置通知（在目标方法执行之后执行）无论有没有异常抛出都会执行
• @AfterReturning 返回通知（在目标方法返回结果之后执行）
• @AfterThrowing 异常通知（在目标方法跑出异常之后执行）
• @Around 环绕通知（围绕着方法执行）

JoinPoint 类：提供了访问当前被增强方法的真实对象、代理对象、方法参数等数据。

ProceedingJoinPoint 类：是JoinPoint 的子类，只能用于环绕通知中，参数必须是ProceedingJoinPoint。必须有返回值（目标方法的返回值）。  

1、引入AOP依赖

        
            org.springframework.boot
            spring-boot-starter-aop
        

2、编写切面类 WebLogAspect

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.annotation.Order;
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;

@Aspect
@Order(5)
@Component
public class WebLogAspect {
    private static final Logger logger = LoggerFactory.getLogger(WebLogAspect.class);

    ThreadLocal startTime = new ThreadLocal();

    @Pointcut("execution(public * cn.jq..*.*controller.*.*(..))")
    public void webLog(){}

    @Before("webLog()")
    public void doBefore(JoinPoint joinPoint) throws Throwable {
        startTime.set(System.currentTimeMillis());

        // 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
        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("ARGS : " + Arrays.toString(joinPoint.getArgs()));

    }

    @AfterReturning(returning = "ret", pointcut = "webLog()")
    public void doAfterReturning(Object ret) throws Throwable {
        // 处理完请求，返回内容
        logger.info("RESPONSE : " + ret);
        logger.info("SPEND TIME : " + (System.currentTimeMillis() - startTime.get()));
    }

}

3、打印日志的测试java类：

@Controller
public class IndexController {
    //private static final Logger logger = LoggerFactory.getLogger(IndexController.class);

    @ResponseBody
    @GetMapping(value = "/index")
    public String index(String name, String password){
        //logger.info("IndexController 日志信息");
        return "IndexController>>>" + name + ">>>"+ password;
    }

}

  

3、切入点表达式也可以使用注解

// 自定义注解
@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface SystemLog {
    String description() default "";
}

@Aspect
@Order(99)
@Component
public class WebLogAspect {
    private static final Logger logger = LoggerFactory.getLogger(WebLogAspect.class);

    ThreadLocal startTime = new ThreadLocal();

    @Pointcut("@annotation(cn.jq.SystemLog)")
    public void webLog(){}

    @Before("webLog()")
    public void doBefore(JoinPoint joinPoint){
        logger.info("Before : " + joinPoint.getSignature().getName());
    }

    @After(value = "webLog()")
    public void doAfter(JoinPoint joinPoint){
        logger.info("After : " + joinPoint.getSignature().getName());
    }

    @AfterReturning(returning = "ret", value = "webLog()")
    public void doAfterReturning(JoinPoint joinPoint, Object ret) throws Throwable {
        // 处理完请求，返回内容
        logger.info("AfterReturning : " + joinPoint.getSignature().getName());
    }

    @AfterThrowing(value = "webLog()", throwing = "ex")
    public void afterThrowing(JoinPoint joinPoint, Exception ex){
        String name = joinPoint.getSignature().getName();
        logger.info("afterThrowing : " + name + "========" + ex.getMessage());
    }

//    @Around(value = "webLog()")
//    public Object around(ProceedingJoinPoint proceedingJoinPoint){
//        Object re = null;
//        try {
//            re = proceedingJoinPoint.proceed();
//        } catch (Throwable throwable) {
//            throwable.printStackTrace();
//        }
//        logger.info("re : " + re );
//        return re;
//    }

}

 

参考文章 https://blog.csdn.net/linxingliang/article/details/52324965

ends~