springMVC 通过反射调用类方法

public int checkMethodGetdata(RuleRecord ruleRecord,String methodName, JSONObject paramsJson,ProductBean productbean) throws IllegalAccessException, InstantiationException, BusinessException {
    Class<?> c = iInnerRuleGetDataService.getClass();
    Object obj = c.newInstance();
    try {
        Method method = c.getMethod(methodName,RuleRecord.class, JSONObject.class,ProductBean.class);
        int result = Integer.parseInt(String.valueOf(method.invoke(obj, new Object[]{ruleRecord,paramsJson,productbean})));
        return result;
    }catch (NoSuchMethodException e){
        LOG.error("找不到执行方法：[{}]", methodName);
        throw new BusinessException(ResponseCode.REQUEST_ERROR_PROGRAM_EXCEPTION, "找不到执行方法", true);
    }catch (Exception e){
        LOG.error("程序异常：[{}]", e.getMessage());
        throw new BusinessException(ResponseCode.REQUEST_ERROR_PROGRAM_EXCEPTION, "程序异常", true);
    }
}

其中：
methodName 为方法名 其余为参数  参数用object[] 数组隔开