//定義注解
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface SafetyHarness {
    String defaultValue() default "";
}
//切入點(diǎn)
@Pointcut("@annotation(com.xx.xx.xx.web.annotation.SafetyHarness)")
    public void efficacyParameters(){
    }

//該controller所有方法，可以直接指定
/*
execution():表達(dá)式主體
第一個(gè) * 表示返回類型，使用*表示所有類型，該 * 與包名之間有一個(gè)空格
第二個(gè) * 表示類名
第三個(gè) * 表示方法名
..表示任意參數(shù)
*/
@Pointcut("value = "execution(* com.xx.xx.xx.web.controller.*.* (..)))")
    public void efficacyParameters(){
    }

@Before("efficacyParameters()")
    public void beforeEfficacyParameters(JoinPoint joinPoint){
            //獲取請求參數(shù)
            ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
            HttpServletRequest request = Objects.requireNonNull(attributes).getRequest();
            Map<String, String[]> parameterMap = request.getParameterMap();
        	//通過參數(shù)名獲取
            Object ext1 = parameterMap.get("ext1");
            Object ext2 = parameterMap.get("ext2");
    }

	@Around("efficacyParameters()")
    public T beforeEfficacyParameters(ProceedingJoinPoint joinPoint){
        	//接口返回結(jié)果,該結(jié)果可在業(yè)務(wù)前或業(yè)務(wù)后執(zhí)行
            Object proceed = joinPoint.proceed();
   			
            Object[] obj = joinPoint.getArgs();
            if (obj == null || obj.length == 0) {
                return T;
            }
           //獲取請求參數(shù) 
            Map<String, Object> fieldsName = getFieldsName(joinPoint);
            Object ext1 = fieldsName.get("ext1");
            //POST請求強(qiáng)轉(zhuǎn)
            SafetyAuditPageVo ext2 = (SafetyAuditPageVo) fieldsName.get("ext");

			//修改請求參數(shù)
			SafetyAuditPageVo vo = (SafetyAuditPageVo) obj[0];
                vo.setXxxx("XXXXXX");
                obj[0] = vo;
                return  joinPoint.proceed(obj);
    }

	private static Map<String, Object> getFieldsName(ProceedingJoinPoint joinPoint) {
      
        Object[] args = joinPoint.getArgs();
        ParameterNameDiscoverer pnd = new DefaultParameterNameDiscoverer();
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        Method method = signature.getMethod();
        String[] parameterNames = pnd.getParameterNames(method);
        Map<String, Object> paramMap = new HashMap<>(32);
        for (int i = 0; i < parameterNames.length; i++) {
            paramMap.put(parameterNames[i], args[i]);
        }
        return paramMap;
    }