AOP(日志）

• 在pom.xml中添加相关的依赖（参考pom.xml文件）
• 在applicationContext.xml中进行相关的配置（参考applicationContext.xml)

@Component
@Aspect
public class LogAop {
    @Autowired
    private HttpServletRequest request;
    @Autowired
    private ISysLogService sysLogService;
    //访问时间
    private Date startTime;
    //访问的类
    private Class executionCla;
    //访问的方法
    private Method executionMethod;
    @Before("execution(* com.deya.controller.*.*(..))")
    public void doBefore(JoinPoint joinPoint) throws NoSuchMethodException {
        startTime = new Date();
        executionCla = joinPoint.getTarget().getClass();
        String methodName = joinPoint.getSignature().getName();
        Object[] args = joinPoint.getArgs();
        if (args==null||args.length==0){
            //只能获取无参数方法
            executionMethod = executionCla.getMethod(methodName);
        }else{
            Class[] classArgs = new Class[args.length];
            for(int i=0;i<args.length;i++){
                classArgs[i] = args[i].getClass();
            }
            executionMethod = executionCla.getMethod(methodName,classArgs);
        }
    }
    @After("execution(* com.deya.controller.*.*(..))")
    public void doAfter(JoinPoint joinPoint) throws Exception {
        String url;
        String ip;
        if(executionCla!=null&&executionMethod!=null&&executionCla==LogAop.class){
            RequestMapping classAnnotation = (RequestMapping) executionCla.getAnnotation(RequestMapping.class);
            if(classAnnotation!=null){
                String[] classValue = classAnnotation.value();
                //获取方法上的@RequestMapping
                RequestMapping methodAnnotation = executionMethod.getAnnotation(RequestMapping.class);
                String[] methodValue = methodAnnotation.value();
                url=classValue[0]+methodValue[0];
                ip = request.getRemoteAddr();
                // 获取当前操作的用户
                // 从上下文中获得当前登录的用户
                SecurityContext context = SecurityContextHolder.getContext();
                User user = (User) context.getAuthentication().getPrincipal();
                String username = user.getUsername();
                SysLog sysLog = new SysLog();
                Long executionTime = new Date().getTime()-startTime.getTime();
                sysLog.setExecutionTime(executionTime);
                sysLog.setIp(ip);
                sysLog.setVisitTime(new Date(executionTime));
                sysLog.setUrl(url);
                sysLog.setUsername(username);
                sysLog.setMethod("[类名]"+executionCla.getName()+"[方法名]"+executionMethod.getName());
                sysLogService.save(sysLog);
            }
        }
    }
}