/**
 * 定義切入點為 帶有 NotEnableEmpty 註解的 
 */
@Pointcut("@annotation(cn.acsm.paddy.manage.anotation.NotEnableEmpty)")
public void params() {
}

/**
 * 定義環繞通知
 * @param joinPoint
* @throws ClassNotFoundException
 * @throws NotFoundException
 * @throws IOException
 */
@Around("params()")
public void doBefore(ProceedingJoinPoint joinPoint) throws 
 
ClassNotFoundException, NotFoundException, IOException {
    ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
HttpServletRequest request = attributes.getRequest();
HttpServletResponse response = attributes.getResponse();
String classType = joinPoint.getTarget().getClass().getName();
 
Class<?> clazz = Class.forName(classType);
String clazzName = clazz.getName();
String methodName = joinPoint.getSignature().getName(); //獲取方法名稱
Object[] args = joinPoint.getArgs();//引數
Map<String, Object> nameAndArgs = getFieldsName(this.getClass(), clazzName, methodName, args);//獲取被切引數名稱及引數值
 
System.out.println(nameAndArgs.toString());
List<Object> requestParams = RequestParamsContextHolder.getRequestParamsLocal();//獲取不能為空的引數
RpcResponseEntity rpcResponseEntity = new RpcResponseEntity();
    boolean hasEmptyParams = false;
    for (Object o : requestParams) {
        if (nameAndArgs.containsKey(o)) {
            Object o1 = nameAndArgs.get(o);
            if (o1 == null) {
                rpcResponseEntity.setInvoke_result_code(RpcResponseEnum.LACK_NECESSARY_PARAMS.getCode());
rpcResponseEntity.setInvoke_result_message(RpcResponseEnum.LACK_NECESSARY_PARAMS.getMessage());
hasEmptyParams = true;
                break;
}
        }
    }
    if (hasEmptyParams) {
        response.reset();
response.setCharacterEncoding("UTF-8");
response.setHeader("Content-Type", "text/plain;charset=UTF-8");
response.setHeader("icop-content-type", "exception");
OutputStream stream = response.getOutputStream();
net.sf.json.JSONObject jsonObject = net.sf.json.JSONObject.fromObject(rpcResponseEntity);
stream.write(jsonObject.toString().getBytes("UTF-8"));
}
    //獲取引數名稱和值
logger.info("當前呼叫介面-[" + request.getRequestURL() + "]");
}

/**
 * 通過反射機制 獲取被切引數名以及引數值
 *
 * @param cls
* @param clazzName
* @param methodName
* @param args
* @return
* @throws NotFoundException
 */
private Map<String, Object> getFieldsName(Class cls, String clazzName, String methodName, Object[] args) throws NotFoundException {
    Map<String, Object> map = new HashMap<String, Object>();
ClassPool pool = ClassPool.getDefault();
//ClassClassPath classPath = new ClassClassPath(this.getClass());
ClassClassPath classPath = new ClassClassPath(cls);
pool.insertClassPath(classPath);
CtClass cc = pool.get(clazzName);
CtMethod cm = cc.getDeclaredMethod(methodName);
MethodInfo methodInfo = cm.getMethodInfo();
CodeAttribute codeAttribute = methodInfo.getCodeAttribute();
LocalVariableAttribute attr = (LocalVariableAttribute) codeAttribute.getAttribute(LocalVariableAttribute.tag);
    if (attr == null) {
        // exception
}
    // String[] paramNames = new String[cm.getParameterTypes().length];
int pos = Modifier.isStatic(cm.getModifiers()) ? 0 : 1;
    for (int i = 0; i < cm.getParameterTypes().length; i++) {
        map.put(attr.variableName(i + pos), args[i]);//paramNames即引數名
}
    return map;
}