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我想为在谷歌应用引擎上运行的GWT应用程序实现文件上传。我用GWTUpload,但收到以下错误,如果我尝试上传文件:GWT Upload on Google Appengine - 跨站点保护
<stdout>: 2015-06-14 17:50:35 ERROR UploadServlet:70 - checkCORS error Origin: http://myApp.appspot.com does not match:^$
我看着UploadServlet,实际上没有对原产againg“^ $”的支票。我不太相信这个正则表达式匹配“^”似乎是字符串的开始和“$”的结尾。但似乎只匹配一个空字符串?
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;
}
我不能设置“corsDomainsRegex”或重写checkCORS()方法,因为它们都是私有的。这里的实际问题是什么?我该如何解决这个问题?