Spring 中使用@Aspect 控制自定义注解

傷城~ 2022-06-03 08:36 268阅读 0赞

[转载一篇介绍@Aspect ][Aspect]

1.定义系统日志注解类  
@Target(ElementType.METHOD)  
@Retention(RetentionPolicy.RUNTIME)  
@Documented  
public @interface SysLog \{

String value() default "";

2.定义切面处理类

package com.kxs.common.aspect;
    
    import com.google.gson.Gson;
    import com.kxs.common.annotation.SysLog;
    import com.kxs.common.utils.HttpContextUtils;
    import com.kxs.common.utils.IPUtils;
    import com.kxs.modules.sys.entity.SysLogEntity;
    import com.kxs.modules.sys.entity.SysUserEntity;
    import com.kxs.modules.sys.service.SysLogService;
    
    import org.apache.shiro.SecurityUtils;
    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.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Component;
    
    import javax.servlet.http.HttpServletRequest;
    import java.lang.reflect.Method;
    import java.util.Date;
    
    
    /** * 系统日志，切面处理类 * * @author * @email * @date */
    @Aspect
    @Component
    public class SysLogAspect {
        @Autowired
        private SysLogService sysLogService;
    
        @Pointcut("@annotation(com.kxs.common.annotation.SysLog)")//指向自定义注解路径
        public void logPointCut() { 
    
        }
    
        /** * 切面记录系统日志 * @param point * @return * @throws Throwable */
        @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;
    
            //保存日志
            saveSysLog(point, time);
    
            return result;
        }
    
    //保存日志
        private void saveSysLog(ProceedingJoinPoint joinPoint, long time) {
            MethodSignature signature = (MethodSignature) joinPoint.getSignature();
            Method method = signature.getMethod();
    
            SysLogEntity sysLog = new SysLogEntity();
            SysLog syslog = method.getAnnotation(SysLog.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 = new Gson().toJson(args[0]);
                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
            String username = ((SysUserEntity) SecurityUtils.getSubject().getPrincipal()).getUsername();
            sysLog.setUsername(username);
    
            sysLog.setTime(time);
            sysLog.setCreateDate(new Date());
            //保存系统日志
            sysLogService.save(sysLog);
        }
    }

[Aspect]: http://www.cnblogs.com/yangyquin/p/5582911.html