import org.springframework.beans.support.ArgumentConvertingMethodInvoker; //导入依赖的package包/类
/** {@inheritDoc} */
public Object execute(String method, @SuppressWarnings("unchecked") Vector params) throws Exception {
    
    log().debug("calling: "+method+'('+toArgList(params)+')');
    
    MethodInvoker invoker = new ArgumentConvertingMethodInvoker();
    invoker.setTargetObject(this.proxy);
    invoker.setTargetMethod(getMethodName(method));
    invoker.setArguments(params.toArray());
    invoker.prepare();
    
    try {
    Object returnValue =  invoker.invoke();
    
    if (returnValue == null && invoker.getPreparedMethod().getReturnType() == Void.TYPE) {
        returnValue = "void";
    }
    
    else if (returnValue instanceof Map<?,?> && !(returnValue instanceof Hashtable<?,?>)) {
        returnValue = new Hashtable<Object, Object>((Map<?, ?>)returnValue);
    }
    
    else if (returnValue instanceof Collection<?> && !(returnValue instanceof Vector<?>)) {
        returnValue = new Vector<Object>((Collection<?>)returnValue);
    }
    
    log().debug("returning from: "+method+'('+toArgList(params)+") result = "+returnValue);
    return returnValue;
    
    } catch (InvocationTargetException e) {
        Throwable targetException = e.getTargetException();
        if (targetException instanceof IllegalArgumentException) {
            throw new MsgPreservingXmlRpcException(XmlRpcConstants.FAULT_INVALID_DATA, targetException.getMessage());
        } else if (targetException instanceof MalformedURLException) {
            throw new MsgPreservingXmlRpcException(XmlRpcConstants.FAULT_INVALID_URL, targetException.getMessage());
        }
        else if (targetException instanceof Exception && targetException.toString() != null) { 
            throw (Exception)targetException;
        }
        
        String msg = targetException.toString();
        if (msg == null)
            msg = targetException.getClass().getName();
        
        Exception ex = new Exception(msg, targetException);
        ex.setStackTrace(targetException.getStackTrace());
        throw ex;
    }

}