一、XML方式

1、pom.xml

<dependency>
    <groupId>org.aspectj</groupId>
    <artifactId>aspectjweaver</artifactId>
    <version>1.8.10</version>
</dependency>

2、自定义注解类

@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD})
public @interface BusiLog {
	String busCode();
	String desc() default "";
}

3、定义aop类

public class BusiLogAspect {
	public void doBefore(JoinPoint pjp) {
        String sessionId = null;
        try {
			MethodSignature signature = (MethodSignature)pjp.getSignature();
			BusiLog annotation = signature.getMethod().getAnnotation(BusiLog.class);
			if (null == annotation) {
				return;
			}
			ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
			if (null == attributes || null == attributes.getRequest()) {
				return;
			}
            // 获取会话ID
            HttpServletRequest request = attributes.getRequest();
			sessionId= request.getHeader("sessionId");
            // 获取请求入参
			JSONObject req = null;
			Object[] args = pjp.getArgs();
			if (args != null) {
				for(Object arg : args){
					if (arg instanceof String) {
						String reqStr = (String)arg;
						if (StringUtils.isNotBlank(reqStr)) {
							req = JSON.parseObject(reqStr);
						}
						break;
					}
				}
			}
			// 打印日志
			if (null != req) {
				printLog(sessionId, annotation.busCode(), req);
                *****省略*****
			}	
		} catch (Exception e) {
			logger.error(sessionId, e);
		}
	}
}

4、applicationContext.xml配置

<bean id="busiLogAspect" class="cn.aspect.BusiLogAspect"/>
<aop:config>
	<aop:pointcut expression="@annotation(cn.annotion.BusiLog)" id="busiLogPointCut" />
	<aop:aspect id="logAspect" ref="busiLogAspect">
		<aop:before method="doBefore" pointcut-ref="busiLogPointCut" />
	</aop:aspect>
</aop:config>

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

5、web.xml

<listener>
    <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class> 
</listener>

如果web.xml不配置这个监听，RequestContextHolder.getRequestAttributes()就取不到request信息。

二、注解方式

1、pom.xml

     同上。

2、自定义注解类

     同上

3、定义aop类

@Aspect
@Component
public class BusiLogAspect {

    @Pointcut("@annotation(cn.annotion.BusiLog)")
	public void auditAspect(){
	}

    @Before("auditAspect()")
	public void doBefore(JoinPoint pjp) {
        String sessionId = null;
        try {
			MethodSignature signature = (MethodSignature)pjp.getSignature();
			BusiLog annotation = signature.getMethod().getAnnotation(BusiLog.class);
			if (null == annotation) {
				return;
			}
			ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
			if (null == attributes || null == attributes.getRequest()) {
				return;
			}
            // 获取会话ID
            HttpServletRequest request = attributes.getRequest();
			sessionId= request.getHeader("sessionId");
            // 获取请求入参
			JSONObject req = null;
			Object[] args = pjp.getArgs();
			if (args != null) {
				for(Object arg : args){
					if (arg instanceof String) {
						String reqStr = (String)arg;
						if (StringUtils.isNotBlank(reqStr)) {
							req = JSON.parseObject(reqStr);
						}
						break;
					}
				}
			}
			// 打印日志
			if (null != req) {
				printLog(sessionId, annotation.busCode(), req);
                *****省略*****
			}	
		} catch (Exception e) {
			logger.error(sessionId, e);
		}
	}
}

4、web.xml

     同上