1
我有一個與GWT不同尋常的問題。在編譯項目之後,在瀏覽器中運行.html文件來運行它。它運行良好,直到下面的代碼行顯示:GWT突然停止執行
public static ClickHandler addBoardButtonHandler(final String name) {
return new ClickHandler(){
@Override
public void onClick(ClickEvent event) {
Window.alert("We will retrieve them!"); //this line runs
String boardSTickets = getBoardSTickets(name); // this too
Window.alert("We got tickets!"); // the code is never executing this line
String boardSSwimlanes = getBoardSSwimlanes(name);
Window.alert("We got swimlanes!");
KanbanizerClient.showSingleBoard(boardSTickets, boardSSwimlanes);
}
};
}
此方法由該另一種方法叫:
private static Button addBoardButton(String name) {
Button button = new Button(name);
button.addClickHandler(HandlerManager.addBoardButtonHandler(name));
return button;
}
這也正常運行。這裏是getBoardSTickets()方法:
protected static String getBoardSTickets(String name) {
final List<String> ticketsJSON = new LinkedList<String>();
try {
Request request = Builder.createBuilder(RequestBuilder.GET, "http://localhost:8080/Kanbanizer/boards/" + name + "/tickets").sendRequest(null, new RequestCallback(){
@Override
public void onResponseReceived(Request request,
Response response) {
if(response.getStatusCode() == 200){
ticketsJSON.add(response.getText());
}
}
@Override
public void onError(Request request, Throwable exception) {
// TODO Auto-generated method stub
}
});
} catch (RequestException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return ticketsJSON.get(0);
}
謝謝:)
問題是? – 2013-03-24 16:12:22
您對「請求」即異步調用的理解是有缺陷的。請閱讀https://developers.google.com/web-toolkit/doc/latest/tutorial/clientserver中的「進行異步調用」部分。 – SSR 2013-03-24 16:26:07
http://stackoverflow.com/questions/10014319/code-after-gwt- RPC-asynccallbak - 將 - 不被執行的/ 10021925#10021925 – 2013-03-25 02:05:29