User operation interception and logging - Custom annotations + AOP interception technology explanation

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)public @interface LogAnnotation {
    String operateModelName() default "";
    String operateFuncName() default "";
    String operationType() default "";  
    String operateDescribe() default "";
}

@Controller
@RequestMapping(value="/kit")public class QueryClientInfoController {
    @Resourceprivate IClientService clientService;    private Logger logger = Logger.getLogger(this.getClass().getName());
    
    @RequestMapping(value="/queryClientRegInfo")
    @LogAnnotation(operateModelName="用户注册模块",
    operateFuncName="queryClientRegInfo",
    operationType="query",
    operateDescribe="查询客户注册信息")public void queryClientRegInfo(HttpServletRequest request,HttpServletResponse response){
        String client_idno = request.getParameter("idno");Client client = clientService.queryClientRegInfo(client_idno);//调用service
        System.out.println("queryClientRegInfo:"+client.getName());
        String jsonMap = JSON.toJSONString(client);
        response.setCharacterEncoding("UTF-8");try {
            response.getWriter().write(jsonMap);
            response.getWriter().flush();
            response.getWriter().close();
        } catch (IOException e) {
            e.printStackTrace();
        }  
    }
}

@Service(value="userLogService")public class UserLogServiceImpl implements IUserLogService {
    @Resourceprivate UserLogDao userLogDao;
    
    @Overridepublic void insert(UserLog record) {return userLogDao.insert(record);
    }@Overridepublic void logBusiController(JoinPoint joinPoint) {
        Map<String, Object> map = new HashMap<String, Object>();
        String targetName = joinPoint.getTarget().getClass().getName();
        String methodName = joinPoint.getSignature().getName();
        Object[] arguments = joinPoint.getArgs();
        Class targetClass;try {
            targetClass = Class.forName(targetName);
            Method[] methods = targetClass.getMethods();for (Method method : methods) {if(method.getName().equals(methodName)) {
                    Class[] clazzs = method.getParameterTypes();if(clazzs.length == arguments.length ) {if(method.getAnnotation(LogAnnotation.class)!= null){
                        map.put("operateModelName", method.getAnnotation(LogAnnotation.class).operateModelName());
                        map.put("operateFuncName", method.getAnnotation(LogAnnotation.class).operateFuncName());
                        map.put("operationType", method.getAnnotation(LogAnnotation.class).operationType());
                        map.put("operateDescribe", method.getAnnotation(LogAnnotation.class).operateDescribe());
                    }elsebreak;
                    }
                }
             }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        
        HttpServletRequest request =((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest(); 
        HttpSession session =request.getSession(); 
        User user = (User) session.getAttribute("currentUser");    
        System.out.println("currentUser:"+user.getName()+"\n targetName:"+targetName+"\n methodName:"+methodName+"\n operateModelName:"+map.get("operateModelName")+"\n operateFuncName:"+map.get("operateFuncName")+"\n operationType:"+map.get("operationType")+"\n operateDescribe:"+map.get("operateDescribe"));}
}