我正在尝试创建一种中间件，以便我正在开发的一些遗留软件可以使用 Twitter 提要。
由于 Twitter 已经过时 API 1.0 并且 1.1 需要 OAuth 并且因为对于这个项目我只有客户端脚本可供我使用，所以我选择使用 Google 脚本来执行 OAuth 协商：
来源：http ://www.labnol.org/internet/twitter-rss-feeds/27931/
function start() {
// Get your Twitter keys from dev.twitter.com
var CONSUMER_KEY = "-----";
var CONSUMER_SECRET = "----";
// Ignore everything after this line
initialize(CONSUMER_KEY, CONSUMER_SECRET);
}
function initialize(key, secret) {
ScriptProperties.setProperty("TWITTER_CONSUMER_KEY", key);
ScriptProperties.setProperty("TWITTER_CONSUMER_SECRET", secret);
var url = ScriptApp.getService().getUrl();
if (url) {
connectTwitter();
var msg = "";
msg += "Sample RSS Feeds for Twitter\n";
msg += "============================";
msg += "\n\nTwitter Timeline of user @labnol";
msg += "\n" + url + "?action=timeline&q=labnol";
msg += "\n\nTwitter Favorites of user @labnol";
msg += "\n" + url + "?action=favorites&q=labnol";
msg += "\n\nTwitter List labnol/friends-in-india";
msg += "\n" + url + "?action=list&q=labnol/friends-in-india";
msg += "\n\nTwitter Search for New York";
msg += "\n" + url + "?action=search&q=new+york";
msg += "\n\nYou should replace the value of 'q' parameter in the URLs as per requirement.";
msg += "\n\nFor help, please refer to http://www.labnol.org/?p=27931";
MailApp.sendEmail(Session.getActiveUser().getEmail(), "Twitter RSS Feeds", msg);
}
}
function doGet(e) {
var a = e.parameter.action;
var q = e.parameter.q;
var feed;
switch (a) {
case "timeline":
feed = "https://api.twitter.com/1.1/statuses/user_timeline.json?screen_name=" + q;
break;
case "search":
feed = "https://api.twitter.com/1.1/search/tweets.json?q=" + encodeString(q);
break;
case "favorites":
feed = "https://api.twitter.com/1.1/favorites/list.json?screen_name=" + q;
break;
case "list":
var i = q.split("/");
feed = "https://api.twitter.com/1.1/lists/statuses.json?slug=" + i[1] + "&owner_screen_name=" + i[0];
break;
default:
feed = "https://api.twitter.com/1.1/statuses/user_timeline.json";
break;
}
var id = Utilities.base64Encode(feed);
var cache = CacheService.getPublicCache();
var rss = cache.get(id);
if ((!rss) || (rss == "undefined")) {
rss = JSONtoRSS(feed, a, q);
cache.put(id, rss, 3600);
}
return ContentService.createTextOutput(rss)
.setMimeType(ContentService.MimeType.RSS);
}
function JSONtoRSS(json, type, key) {
oAuth();
var options = {
"method": "get",
"oAuthServiceName": "twitter",
"oAuthUseToken": "always"
};
try {
var result = UrlFetchApp.fetch(json, options);
if (result.getResponseCode() === 200) {
var tweets = Utilities.jsonParse(result.getContentText());
if (type == "search")
tweets = tweets.statuses;
if (tweets) {
var len = tweets.length;
var rss = "";
if (len) {
rss = '<?xml version="1.0"?><rss version="2.0">';
rss += ' <channel><title>Twitter ' + type + ': ' + key + '</title>';
rss += ' <link>' + htmlentities(json) + '</link>';
rss += ' <pubDate>' + new Date() + '</pubDate>';
for (var i = 0; i < len; i++) {
var sender = tweets[i].user.screen_name;
var tweet = htmlentities(tweets[i].text);
rss += "<item><title>" + sender + ": " + tweet + "</title>";
rss += " <author>" + tweets[i].user.name + " (@" + sender + ")</author>";
rss += " <pubDate>" + tweets[i].created_at + "</pubDate>";
rss += " <guid isPermaLink='false'>" + tweets[i].id_str + "</guid>";
rss += " <link>https://twitter.com/" + sender + "/statuses/" + tweets[i].id_str + "</link>";
rss += " <description>" + tweet + "</description>";
rss += "</item>";
}
rss += "</channel></rss>";
return rss;
}
}
}
} catch (e) {
Logger.log(e.toString());
}
}
function connectTwitter() {
oAuth();
var search = "https://api.twitter.com/1.1/application/rate_limit_status.json";
var options = {
"method": "get",
"oAuthServiceName": "twitter",
"oAuthUseToken": "always"
};
try {
var result = UrlFetchApp.fetch(search, options);
} catch (e) {
Logger.log(e.toString());
}
}
function encodeString(q) {
var str = encodeURIComponent(q);
str = str.replace(/!/g, '%21');
str = str.replace(/\*/g, '%2A');
str = str.replace(/\(/g, '%28');
str = str.replace(/\)/g, '%29');
str = str.replace(/'/g, '%27');
return str;
}
function htmlentities(str) {
str = str.replace(/&/g, "&");
str = str.replace(/>/g, ">");
str = str.replace(/</g, "<");
str = str.replace(/"/g, """);
str = str.replace(/'/g, "'");
return str;
}
function oAuth() {
var oauthConfig = UrlFetchApp.addOAuthService("twitter");
oauthConfig.setAccessTokenUrl("https://api.twitter.com/oauth/access_token");
oauthConfig.setRequestTokenUrl("https://api.twitter.com/oauth/request_token");
oauthConfig.setAuthorizationUrl("https://api.twitter.com/oauth/authorize");
oauthConfig.setConsumerKey(ScriptProperties.getProperty("TWITTER_CONSUMER_KEY"));
oauthConfig.setConsumerSecret(ScriptProperties.getProperty("TWITTER_CONSUMER_SECRET"));
}
我已遵循指南中规定的所有说明，包括两次运行“开始”......所做的只是向我的电子邮件帐户发送一封包含各种 URL 的电子邮件。当我尝试访问电子邮件中提供的 URL（并且计划将该 URL 放入当前指向 Twitter 1.0 API 的旧版 javascript 中）时，我收到错误“执行该操作需要授权”
我已经无数次确认它设置为“以[我]身份执行应用程序”和“任何人，甚至匿名都可以访问应用程序”
我不确定我错过了什么或搞砸了什么。