用jarslink做module隔离时,dubbo调用会抛ClassNotFoundException.经查是ClassLoader不一致.

```
    public static Class<?> getReturnType(Invocation invocation) {
        try {
            if (invocation != null && invocation.getInvoker() != null
                    && invocation.getInvoker().getUrl() != null
                    && !invocation.getMethodName().startsWith("$")) {
                String service = invocation.getInvoker().getUrl().getServiceInterface();
                if (service != null && service.length() > 0) {
                    Class<?> cls = ReflectUtils.forName(service);
                    Method method = cls.getMethod(invocation.getMethodName(), invocation.getParameterTypes());
                    if (method.getReturnType() == void.class) {
                        return null;
                    }
                    return method.getReturnType();
                }
            }
        } catch (Throwable t) {
            logger.warn(t.getMessage(), t);
        }
        return null;
    }
```
throw new NoSuchMethodException("No such method " + methodName + " in class " + clazz);
            }
            if (finded.size() > 1) {
                String msg = String.format("Not unique method for method name(%s) in class(%s), find %d methods.",
                        methodName, clazz.getName(), finded.size());
                throw new IllegalStateException(msg);
            }
            method = finded.get(0);
        } else {
            Class<?>[] types = new Class<?>[parameterTypes.length];
            for (int i = 0; i < parameterTypes.length; i++) {
                types[i] = ReflectUtils.name2class(parameterTypes[i]);
            }
            method = clazz.getMethod(methodName, types);
        }
        Signature_METHODS_CACHE.put(signature, method);
        return method;
    }
    public static Method findMethodByMethodName(Class<?> clazz, String methodName)
            throws NoSuchMethodException, ClassNotFoundException {
        return findMethodByMethodSignature(clazz, methodName, null);
    }
    public static Constructor<?> findConstructor(Class<?> clazz, Class<?> paramType) throws NoSuchMethodException {
        Constructor<?> targetConstructor;
        try {
            targetConstructor = clazz.getConstructor(new Class<?>[]{paramType});
        } catch (NoSuchMethodException e) {
            targetConstructor = null;
            Constructor<?>[] constructors = clazz.getConstructors();
            for (Constructor<?> constructor : constructors) {