在我们开发一个系统的时候，遇到问题总要去服务器获取日志，分析日志，这样总感觉会很麻烦，所以想想怎么方便快捷的查看系统的日志信息呢？

这边是本篇文章的初衷。日志入库，日志入库也有很多方法，这里只介绍其中一种最为简单的方法——切面日志入库

1、依赖jar包

<dependency>
    <groupId> org.aspectj</groupId >
    <artifactId> aspectjweaver</artifactId >
    <version> 1.8.7</version >
</dependency>

2、具体切面实现类

切面实现类如何定义与实现呢？接下来我们具体分析一下代码逻辑：
首先创建切入点，注解中“ @Pointcut("execution(public com.xxx.www.manage.controller...*(..))")”这部分内容是指引我们哪些包下的什么级别可以进行日志记录。
“ @Around("controllerLogInfo()")” 是定义具体的执行日志记录方法。此方法中获取了入库所需的各个参数值，然后将每个值赋值给日志对象，然后组装入库
ini复制代码

@Aspect
@Component
public class LogAspect extends BaseController {
   
    private Logger logger = LoggerFactory.getLogger(LogAspect.class);
    @Autowired
    private JournalService journalService;
    /**
     * 切入点描述 这里是controller包的切入点
     * 签名，可以理解成这个切入点的一个名称
     */
    @Pointcut("execution(public * com.xxx.www.manage.controller..*.*(..))")
    public void controllerLogInfo(){
   }


    @Around("controllerLogInfo()")
    public Object handleControllerMethodLog(ProceedingJoinPoint joinPoint) throws Throwable {
   
        long beginTime = System.currentTimeMillis();
        // 获取方法签名
        MethodSignature methodSignature = (MethodSignature) joinPoint.getSignature();
        // 获取方法
        Method method = methodSignature.getMethod();
        //获取请求的类名
        String className = joinPoint.getTarget().getClass().getName();
        //获取请求的方法名
        String methodName = method.getName();
        //请求的参数
        Object[] args = joinPoint.getArgs();
        //将参数所在的数组转换成json
        String params = JSON.toJSONString(args,SerializerFeature.IgnoreNonFieldGetter);

        //获取ip地址
        RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();//这个RequestContextHolder是Springmvc提供来获得请求的东西
        HttpServletRequest request = ((ServletRequestAttributes)requestAttributes).getRequest();
        //获取ip地址
        String ip = request.getRemoteAddr();
        try {
   
            ip = request.getHeader("x-forwarded-for");
            if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
   
                ip = request.getHeader("Proxy-Client-IP");
            }
            if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
   
                ip = request.getHeader("WL-Proxy-Client-IP");
            }
            if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
   
                ip = request.getRemoteAddr();
            }
        } catch (Exception e) {
   
            e.printStackTrace();
        }
        User user = getUser(request);
        //保存日志
        Journal journal = new Journal(); 
        journal.setCreateTime(new Date());
        int k = className.lastIndexOf(".");
        String substring = className.substring(k+1, className.length());
        String nWrod = StringUtils.findNWrod(substring, 1);
        journal.setMethod(nWrod.toLowerCase() + "_" + methodName);
        journal.setName(user.getUsername());
        journal.setIpAddress(ip);
        journal.setRemark(className + "=========" + params);
        Object result = null;
        result = joinPoint.proceed();
        journalService.insertSelective(journal);
        return result;
    }
}

好了，这样就轻松搞定日志入库，觉得有帮助，帮小编点个赞吧！