我試圖通過對(duì)已通過其 JNDI 引用查找的 EJB 進(jìn)行反射來調(diào)用方法。它需要三個(gè)參數(shù)：一個(gè) EndUser 對(duì)象（自定義對(duì)象）、一個(gè) Set（自定義類）和一個(gè)布爾值。第一個(gè)對(duì)象導(dǎo)致調(diào)用失敗并顯示“無法調(diào)用方法：java.lang.IllegalArgumentException：參數(shù)類型不匹配”。只要第一個(gè)參數(shù)不為空，就會(huì)發(fā)生這種情況。將其設(shè)置為 null 會(huì)使錯(cuò)誤消失。實(shí)際調(diào)用：  public Relation createRelation(final Relation relation, final HashSet<Contact> contacts) {        final EndUser user = new EndUser();        Object[] args = new Object[]{user, contacts, false};        try {            return (Relation) EjbUtils.invoke("registerEndUser", REGISTRATION_SERVICE_JNDI, args);        } catch (final Throwable throwable) {            LOGGER.error("Could not invoke method", throwable);            return null;        }}EjbUtils 方法： public static Object invoke(final String methodName, final String ejbName, final Object... args) throws Throwable {        final String jndiName = getEjbJndi(ejbName);        final Object remoteObject = lookup(jndiName);        final Method[] methods = remoteObject.getClass().getMethods();        for (final Method method : methods) {            if (methodName.equals(method.getName()) && args.length == method.getParameterCount()) {                try {                    return method.invoke(remoteObject, args);                } catch (IllegalAccessException e) {                    final String message = String.format("Could not invoke method %s on %s: %s", methodName, ejbName, e.getMessage());                    LOGGER.error(message);                    throw new IllegalStateException(message, e);                } catch (InvocationTargetException e) {                    throw e.getCause();                }            }        }        throw new IllegalArgumentException("Method not found");    }我試圖調(diào)用的方法：    public Relation registerEndUser(final EndUser relation, final Set<Contact> contacts, boolean sendMail)            throws RegistrationServiceException, RegistrationServiceWarning {        return registerRelation(relation, contacts, sendMail);    }沒有拋出異常并且調(diào)用了該方法，這應(yīng)該表明參數(shù)的類型正確。調(diào)試時(shí)我可以看到找到了正確的方法，并且所需的參數(shù)類型與我提供的相同。關(guān)于如何找出實(shí)際問題的任何想法？