tornado利用check_xsrf_cookie()防止XSRF

xsrf_cookies=True

def xsrf_form_html(self):
    return '<input type="hidden" name="_xsrf" value="' + \
        escape.xhtml_escape(self.xsrf_token) + '"/>'

function getCookie(name) { 
   
    var r = document.cookie.match("\\b" + name + "=([^;]*)\\b");
    return r ? r[1] : undefined;
}
function set_xsrf(data){ 
   
    var secure_key = getCookie("__xsrf") || "";
    if (isNotEmpty(secure_key)) {
        data["__xsrf"] = secure_key;
    }
    return data;
}
var data = {
  
  'name': 'JianW'};
set_xsrf(data);
$.ajax({
    url : url,
    data : data,
    dataType : "JSON",
    type : "POST",
    async : false,
    success : function(ret) { 
   
        code_list.push(ret.code);
    }
});

def check_xsrf_cookie(self):
    token = (self.get_argument("_xsrf", None) or
             self.request.headers.get("X-Xsrftoken") or
             self.request.headers.get("X-Csrftoken"))
    if not token:
        raise HTTPError(403, "'_xsrf' argument missing from POST")
    _, token, _ = self._decode_xsrf_token(token)
    _, expected_token, _ = self._get_raw_xsrf_token()
    if not _time_independent_equals(utf8(token), utf8(expected_token)):
        raise HTTPError(403, "XSRF cookie does not match POST argument")

# If XSRF cookies are turned on, reject form submissions without
# the proper cookie
if self.request.method not in ("GET", "HEAD", "OPTIONS") and \
        self.application.settings.get("xsrf_cookies"):
    self.check_xsrf_cookie()

def check_xsrf_cookie(self):
    if not self.request.path.startswith('/rest'):
        ...