基于AOP日志处理

AOP日志

数据库与表结构

• 日志表信息描述sysLog
  
• sql语句

CREATE TABLE sysLog(

id VARCHAR2(32) default SYS_GUID() PRIMARY KEY,

visitTime timestamp,

username VARCHAR2(50),

ip VARCHAR2(30),

url VARCHAR2(50),

executionTime int,

method VARCHAR2(200)

)

• 实体类

public class SysLog {

private String id;

private Date visitTime;

private String visitTimeStr;

private String username;

private String ip;

private String url;

private Long executionTime;

private String method;

｝

基于AOP日志处理

在切面类中我们需要获取登录用户的username，还需要获取ip地址，我们怎么处理？

username获取 
  SecurityContextHolder获取 
ip地址获取 
  ip地址的获取我们可以通过request.getRemoteAddr()方法获取到。
  在Spring中可以通过RequestContextListener来获取request或session对象。

获取request可以创建一个监听

1.页面syslog-list.jsp

2.创建切面类处理日志 LogAop

@Component
@Aspect
public class LogAop {

    @Autowired
    private HttpServletRequest request;

    @Autowired 
    private ISysLogService sysLogService;

    private Date visitTime; //开始时间
    private Class clazz; //访问的类
    private Method method;//访问的方法

//**前置通知  主要是获取开始时间，执行的类是哪一个，执行的是哪一个方法
    @Before("execution(* com.itheima.ssm.controller.*.*(..))")
    public void doBefore(JoinPoint jp) throws NoSuchMethodException {
        visitTime = new Date();//当前时间就是开始访问的时间
        clazz = jp.getTarget().getClass(); //具体要访问的类
        String methodName = jp.getSignature().getName(); //获取访问的方法的名称
        Object[] args = jp.getArgs();//获取访问的方法的参数

        //获取具体执行的方法的Method对象
        if (args == null || args.length == 0) {
            method = clazz.getMethod(methodName); //只能获取无参数的方法
        } else {
            Class[] classArgs = new Class[args.length];
            for (int i = 0; i < args.length; i++) {
                classArgs[i] = args[i].getClass();
            }
            clazz.getMethod(methodName, classArgs);
        }
    }

//**后置通知
    @After("execution(* com.itheima.ssm.controller.*.*(..))")
    public void doAfter(JoinPoint jp) throws Exception {
        long time = new Date().getTime() - visitTime.getTime(); //获取访问的时长

        String url = "";
        //获取url 反射
        if (clazz != null && method != null && clazz != LogAop.class) {
            //1.获取类上的@RequestMapping("/orders")
            RequestMapping classAnnotation = (RequestMapping) clazz.getAnnotation(RequestMapping.class);
            if (classAnnotation != null) {
                String[] classValue = classAnnotation.value();
                //2.获取方法上的@RequestMapping(xxx)
                RequestMapping methodAnnotation = method.getAnnotation(RequestMapping.class);
                if (methodAnnotation != null) {
                    String[] methodValue = methodAnnotation.value();
                    url = classValue[0] + methodValue[0];

                    //获取访问的ip
                    String ip = request.getRemoteAddr();

                    //获取当前操作的用户
                    SecurityContext context = SecurityContextHolder.getContext();//从上下文中获了当前登录的用户
                    User user = (User) context.getAuthentication().getPrincipal();
                    String username = user.getUsername();

                    //将日志相关信息封装到SysLog对象
                    SysLog sysLog = new SysLog();
                    sysLog.setExecutionTime(time); //执行时长
                    sysLog.setIp(ip);
                    sysLog.setMethod("[类名] " + clazz.getName() + "[方法名] " + method.getName());
                    sysLog.setUrl(url);
                    sysLog.setUsername(username);
                    sysLog.setVisitTime(visitTime);

                    //调用Service完成操作
                    sysLogService.save(sysLog);
                }
            }
        }

    }
}

3.SysLogController

@Controller
@RequestMapping("/sysLog")
public class SysLogController {

    @Autowired
    private ISysLogService sysLogService;

    @RequestMapping("/findAll.do")
    public ModelAndView findAll() throws Exception {
        ModelAndView mv=new ModelAndView();
       List<SysLog> sysLogList= sysLogService.findAll();
       mv.addObject("sysLogs",sysLogList);
       mv.setViewName("syslog-list");
        return mv;
    }
}

4.Service

@Service
@Transactional
public class SysLogServiceImpl implements ISysLogService {

    @Autowired
    private ISysLogDao sysLogDao;

    @Override
    public List<SysLog> findAll() throws Exception {
        return sysLogDao.findAll();
    }

    @Override
    public void save(SysLog sysLog) throws Exception {
        sysLogDao.save(sysLog);
    }
}

AOP日志查询操作流程

5.Dao

public interface ISysLogDao {

    @Insert("insert into syslog(visitTime,username,ip,url,executionTime,method) values(#{visitTime},#{username},#{ip},#{url},#{executionTime},#{method})")
    public void save(SysLog sysLog) throws Exception;

    @Select("select * from sysLog")
    List<SysLog> findAll() throws Exception;
}