In one page has two Grid,Result was in chaos

index.html code:

function onBodyLoad(){
…settings for gridA…
gridA.loadXML(/a.do);
…setting for gridB…
gridB.loadXML(/b.do);
}

then ,on the page loading,the error was on server side:…response was cann’t rest…response was commited;

I don’t know why;
When I user an other Servlet was extends HttpServlet,was not has error like up;

Check Thread-safe code initialization

docs.dhtmlx.com/connector__java_ … ialization