在提出这个问题之前，我已经提到了以下但没有帮助我
有些帖子说使用passport-facebook-token但是我不想使用，因为我想用passport-facebook扩展我的应用程序的现有功能
问题陈述
目前，我使用passport-facebook进行身份验证，效果很好。现在我想扩展功能，使用Facebook Graph API来获取登录我应用程序的用户的照片
所以使用Facebook Graph API使用Node JS中的请求模块获取我必须在下面调用的用户照片，正文部分将返回预期结果
var request = require("request");
var options = {
method: 'GET',
url: 'https://graph.facebook.com/me/photos/',
qs: {
access_token: 'EBBCEdEose0cBADwb5mOEGISFzPwrsUCrXwRWhO87aXB9KsVJlgSLc19IdX9D9AKU7OD5SdFOqPXW3eLm8J3HltZC14VexdMsEDW35LDWASdVDNGp5brFERBETsIvxXJIFXo7QSum5apHXeRyQk7c2PQljmf5WHObZAwXVzYjqPd4lziKTUK48Wfrw5HPwZD'
},
headers: {
'content-type': 'application/json'
}
};
request(options, function (error, response, body) {
if (error) throw new Error(error);
console.log(body);
});
但是现在我想创建我的自定义快速GET API，当我打电话给我使用时应该得到上面的身体响应，
喜欢GET : /graph/photos
app.get('/graph/photos', function (req, res) {
res.send(body)//Here I wanted to get the same response as of the request module above
});
但我有以下挑战
但我可以通过以下方法继续进行，我已经按照
中的教程进行了操作https://github.com/scotch-io/easy-node-authentication/tree/linking
app.get('/graph/photos', isLoggedIn, function (req, res) {
var hsResponse = request({
url: 'https://graph.facebook.com/me/photos',
method: 'GET',
qs: {
"access_token": req.user.facebook.token
},
}, function (error, response, body) {
res.setHeader('Content-Type', 'application/json');
res.send(body);
});
});
但我遇到的问题是每次调用API / graph / photos /，它会尝试重定向以检查用户是否已登录因此我将不能直接在Angular Service中使用并低于错误
错误
无法加载http://localhost:3000/graph/photos：CORS政策阻止了从“http://someurl”到“http://someurl”的重定向：没有“Access-Control-Allow-Origin”标题存在于请求的资源上。因此，不允许原点“http://localhost:4200”访问。
答案 0 :(得分：1)
尝试一下... 我为我的项目编写了函数，您只需自定义即可。...
// facebook login
exports.facebookLogin = function(req, res) {
var fields = config.loginFaceBook.fbFields;
var accessTokenUrl = config.loginFaceBook.fbAccessTokenUrl;
var graphApiUrl = config.loginFaceBook.fbGraphApiUrl + fields.join(',');
var params = {
code: req.body.code,
client_id: req.body.clientId,
client_secret: config.loginFaceBook.fbClientSecret,
redirect_uri: req.body.redirectUri
};
// Step 1. Exchange authorization code for access token.
request.get({
url: accessTokenUrl,
qs: params,
json: true
}, function(err, response, accessToken) {
console.log('Exchange authorization code err::', err);
console.log('Exchange authorization code accessToken::', accessToken);
if (response.statusCode !== 200) {
return res.status(500).send({
message: accessToken.error.message
});
}
// Step 2. Retrieve profile information about the current user.
request.get({
url: graphApiUrl,
qs: {
access_token: accessToken.access_token,
fields: fields.join(',')
},
json: true
}, function(err, response, profile) {
console.log('Retrieve profile information err::', err);
console.log('Retrieve profile information::', profile);
if (response.statusCode !== 200) {
return res.status(500).send({
message: profile.error.message
});
}
if (req.header('Authorization')) {
console.log('req header Authorization', req.header('Authorization'));
} else {
var socialEmail;
if (profile.email) {
socialEmail = profile.email;
} else {
socialEmail = profile.id + '@facebook.com';
}
// Step 3. Create a new user account or return an existing one.
UserModel.findOne({
email: socialEmail
}, function(err, existingUser) {
if (existingUser) {
AppClientModel.findOne({
_id: config.auth.clientId
}, function(err, client) {
if (!err) {
var refreshToken = generateToken(existingUser, client, config.secrets.refreshToken);
var rspTokens = {};
rspTokens.access_token = generateToken(existingUser, client, config.secrets.accessToken, config.token.expiresInMinutes);
var encryptedRefToken = cryptography.encrypt(refreshToken);
var token = {
clientId: client._id,
refreshToken: refreshToken
};
UserModel.update({
_id: existingUser._id
}, {
$push: {
'tokens': token
}
}, function(err, numAffected) {
if (err) {
console.log(err);
sendRsp(res, 400, err);
}
res.cookie("staffing_refresh_token", encryptedRefToken);
sendRsp(res, 200, 'Success', rspTokens);
});
}
});
}
if (!existingUser) {
var userName = profile.first_name + ' ' + profile.last_name;
var newUser = new UserModel({
name: userName,
img_url: 'https://graph.facebook.com/' + profile.id + '/picture?type=large',
provider: 2, //2: 'FB'
fb_id: profile.id,
email_verified_token_generated: Date.now()
});
log.info("newUser", newUser);
newUser.save(function(err, user) {
if (!err) {
var refreshToken = generateToken(user, client, config.secrets.refreshToken);
var rspTokens = {};
rspTokens.access_token = generateToken(user, client, config.secrets.accessToken, config.token.expiresInMinutes);
var encryptedRefToken = cryptography.encrypt(refreshToken);
var token = {
clientId: client._id,
refreshToken: refreshToken
};
UserModel.update({
_id: user._id
}, {
$push: {
'tokens': token
}
}, function(err, numAffected) {
if (err) {
console.log(err);
sendRsp(res, 400, err);
}
res.cookie("staffing_refresh_token", encryptedRefToken);
sendRsp(res, 200, 'Success', rspTokens);
});
} else {
if (err.code == 11000) {
return sendRsp(res, 409, "User already exists");
} else {
return sendRsp(res, 500, "User create error");
}
}
});
}
});
}
});
});
};