spring - 添加spring AOP(Aspect Oriented Programming)日志

Question

我在我的 Web 应用程序中使用了 spring aop（面向方面​​的编程）。现在我想将日志添加到连接点出现的地方。如何为此任务配置我的 log4j xml。

Answer 1

为此，我创建了一个 Aspect 记录器。这适用于不同的层，如控制器、具有不同日志记录级别的服务 DAO。

@Aspect
public class LoggerAspect {

    private final static Logger LOGGER = LoggerFactory
            .getLogger(LoggerAspect.class);

    @Autowired
    private RequestInfo requestInfo;

    @Around("@annotation(org.springframework.web.bind.annotation.RequestMapping)")
    public Object logWebRequest(ProceedingJoinPoint pjp) throws Throwable {
        Object obj;
        Long startTime = System.currentTimeMillis();
        if (SecurityContextHolder.getContext().getAuthentication() != null) {
            Object user = SecurityContextHolder.getContext()
                    .getAuthentication().getPrincipal();
            LOGGER.info("User: " + user);
        }
        LOGGER.info("Controller UUID: " + requestInfo.getRequestUUID());
        LOGGER.info("Controller URL: " + requestInfo.getRequestMethod());
        LOGGER.info("Controller Method: " + pjp.getSignature());
        logArguments(pjp);
        try {
            obj = pjp.proceed();
        } catch (Exception e) {
            LOGGER.error("Controller:" + e.getMessage());
            throw e;
        }
        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("Returns: " + obj);
            LOGGER.debug("Controller Response Time: "
                    + (System.currentTimeMillis() - startTime) + " ms");
        }
        return obj;
    }

    @Around("execution(public * com.common.service..*.*(..))")
    public Object logCommonServiceRequest(ProceedingJoinPoint pjp)
            throws Throwable {
        return logServiceRequest(pjp);
    }

    @Around("execution(public * com.modules.*.service..*.*(..))")
    public Object logModulesServiceRequest(ProceedingJoinPoint pjp)
            throws Throwable {
        return logServiceRequest(pjp);
    }

    private Object logServiceRequest(ProceedingJoinPoint pjp) throws Throwable,
            Exception {
        Object obj;
        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("Service: " + pjp.getTarget().getClass() + " -- "
                    + pjp.getSignature());
            logArguments(pjp);
        }
        try {
            obj = pjp.proceed();
        } catch (Exception e) {
            LOGGER.error("Service Exception:" + e.getMessage());
            throw e;
        }
        if (LOGGER.isDebugEnabled())
            LOGGER.debug("Service Returns: " + obj);
        return obj;
    }

    @Around("execution(public * com.common.dao..*.*(..))")
    public Object logCommonDAORequest(ProceedingJoinPoint pjp) throws Throwable {
        return logDAORequest(pjp);
    }

    @Around("execution(public * com.modules.*.dao..*.*(..))")
    public Object logModulesDAORequest(ProceedingJoinPoint pjp)
            throws Throwable {
        return logDAORequest(pjp);
    }

    private Object logDAORequest(ProceedingJoinPoint pjp) throws Throwable,
            Exception {
        Object obj;
        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("DAO: " + pjp.getTarget().getClass() + " -- "
                    + pjp.getSignature());
            logArguments(pjp);
        }
        try {
            obj = pjp.proceed();
        } catch (Exception e) {
            LOGGER.error("DAO Exception:" + e.getMessage());
            throw e;
        }
        if (LOGGER.isDebugEnabled())
            LOGGER.debug("DAO Returns: " + obj);
        return obj;
    }

    private void logArguments(ProceedingJoinPoint pjp) {
        StringBuffer argLog = new StringBuffer();
        for (Object arg : pjp.getArgs()) {
            argLog.append(arg);
            argLog.append(",");
        }
        LOGGER.info("Args: " + argLog);
    }

}


<aop:aspectj-autoproxy proxy-target-class="true">
    <aop:include name="loggerAspect" />
</aop:aspectj-autoproxy>

<bean id="loggerAspect" class="com.service.LoggerAspect">
</bean>