Spring自定义日志注解

JDK1.5中引入注解,spring框架把java注解发扬光大

一  创建自定义注解

　　

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

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

二  解析注解

使用@Aspect注解使得该类成为切面类

import java.lang.reflect.Method;
import java.util.Date;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

import javax.servlet.http.HttpServletRequest;

import com.prostate.common.service.LogService;
import com.prostate.system.domain.UserToken;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Component;

import com.prostate.common.annotation.Log;
import com.prostate.common.dao.LogDao;
import com.prostate.common.domain.LogDO;
import com.prostate.common.utils.HttpContextUtils;
import com.prostate.common.utils.IPUtils;
import com.prostate.common.utils.JSONUtils;
import com.prostate.common.utils.ShiroUtils;
import com.prostate.system.domain.UserDO;

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

    @Autowired
    LogService logService;

    @Pointcut("@annotation(com.common.annotation.Log)")
    public void logPointCut() {
    }

    @Around("logPointCut()")
    public Object around(ProceedingJoinPoint point) throws Throwable {
        long beginTime = System.currentTimeMillis();
        // 执行方法
        Object result = point.proceed();
        // 执行时长(毫秒)
        long time = System.currentTimeMillis() - beginTime;
        //异步保存日志
        saveLog(point, time);
        return result;
    }

    void saveLog(ProceedingJoinPoint joinPoint, long time) throws InterruptedException {
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        Method method = signature.getMethod();
        LogDO sysLog = new LogDO();
        Log syslog = method.getAnnotation(Log.class);
        if (syslog != null) {
            // 注解上的描述
            sysLog.setOperation(syslog.value());
        }
        // 请求的方法名
        String className = joinPoint.getTarget().getClass().getName();
        String methodName = signature.getName();
        sysLog.setMethod(className + "." + methodName + "()");
        // 请求的参数
        Object[] args = joinPoint.getArgs();
        try {
            String params = JSONUtils.beanToJson(args[0]).substring(0, 4999);
            sysLog.setParams(params);
        } catch (Exception e) {

        }
        // 获取request
        HttpServletRequest request = HttpContextUtils.getHttpServletRequest();
        // 设置IP地址
        sysLog.setIp(IPUtils.getIpAddr(request));
        // 用户名
        UserDO currUser = ShiroUtils.getUser();
        if (null == currUser) {
            if (null != sysLog.getParams()) {
                sysLog.setUserId(-1L);
                sysLog.setUsername(sysLog.getParams());
            } else {
                sysLog.setUserId(-1L);
                sysLog.setUsername("获取用户信息为空");
            }
        } else {
            sysLog.setUserId(ShiroUtils.getUserId());
            sysLog.setUsername(ShiroUtils.getUser().getUsername());
        }
        sysLog.setTime((int) time);
        // 系统当前时间
        Date date = new Date();
        sysLog.setGmtCreate(date);
        // 保存系统日志
        logService.save(sysLog);
    }
}

通过@Pointcut指定切入点,这里指定Log注解,也就是被@Log修饰的方法,进入该切入点

①  @Before  前置通知 在某连接点之前执行的通知

②   @Around  环绕通知 在实现方法的前后执行的通知

③   @AfterReturning 后置通知  在某连接点正常完成执行的通知

④   @AfterThrowing  异常通知  在方法抛出异常退出执行的通知

⑤   @After  后置通知

@RequiresPermissions("base:scaleManager:edit")
    @Log("编辑题目或选项")
    @GetMapping("/edit/{id}")
    String edit(Model model, @PathVariable("id") String id) {
        ScaleDO scaleDO = scaleManagerService.get(id);
        model.addAttribute("scaleDO", scaleDO);
        ScaleDO scale = scaleManagerService.get(scaleDO.getParentId());
        model.addAttribute("scale",scale);
        return prefix+"/edit";
    }

随便弄一个测试类就可测试了