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我想爲在谷歌應用引擎上運行的GWT應用程序實現文件上傳。我用GWTUpload,但收到以下錯誤,如果我嘗試上傳文件:GWT Upload on Google Appengine - 跨站點保護
<stdout>: 2015-06-14 17:50:35 ERROR UploadServlet:70 - checkCORS error Origin: http://myApp.appspot.com does not match:^$
我看着UploadServlet,實際上沒有對原產againg「^ $」的支票。我不太相信這個正則表達式匹配「^」似乎是字符串的開始和「$」的結尾。但似乎只匹配一個空字符串?
private boolean checkCORS(HttpServletRequest request, HttpServletResponse response) {
String origin = request.getHeader("Origin");
if (origin != null && origin.matches(corsDomainsRegex)) {
// Maybe the user has used this domain before and has a session-cookie, we delete it
// Cookie c = new Cookie("JSESSIONID", "");
// c.setMaxAge(0);
// response.addCookie(c);
// All doXX methods should set these header
response.addHeader("Access-Control-Allow-Origin", origin);
response.addHeader("Access-Control-Allow-Credentials", "true");
return true;
} else if (origin != null) {
logger.error("checkCORS error Origin: " + origin + " does not match:" + corsDomainsRegex);
}
return false;
}
我不能設置「corsDomainsRegex」或重寫checkCORS()方法,因爲它們都是私有的。這裏的實際問題是什麼?我該如何解決這個問題?