GWT用frame调用JSP

Frame htmlFrame = new Frame("../OurHome/modules/core/mainIndex.jsp?merchantId="+merchantId+"&columnId="+columnId);
htmlFrame.removeStyleName(htmlFrame.getStyleName());
 DOM.setElementPropertyInt(htmlFrame.getElement(), "frameBorder", 0);
 htmlFrame.setSize("100%", "100%");
 container.add(htmlFrame);