我有一个 rest api 部署在带有无服务器框架的 aws 上。
现在,我在其中创建了一个简单的 jwt 令牌自定义令牌授权器来授权我的端点。
这是我在 serverless.yml 中的路由定义 -
loginUser:
handler: src/controllers/auth.loginUser
events:
- http:
path: auth/local/login
method: POST
cors: true
tokenVerifier:
handler: ./src/helpers/tokenVerifier.auth
userProfile:
handler: src/controllers/users.me
events:
- http:
path: user/me
method: GET
authorizer: tokenVerifier
cors: true
这是我的自定义授权者 tokenVerifier 函数定义 -
const jwt = require('jsonwebtoken');
// Policy helper function
const generatePolicy = (principalId, effect, resource) => {
const authResponse = {};
authResponse.principalId = principalId;
if (effect && resource) {
const policyDocument = {};
policyDocument.Version = '2012-10-17';
policyDocument.Statement = [];
const statementOne = {};
statementOne.Action = 'execute-api:Invoke';
statementOne.Effect = effect;
statementOne.Resource = resource;
policyDocument.Statement[0] = statementOne;
authResponse.policyDocument = policyDocument;
}
return authResponse;
};
const auth = (event, context, callback) => {
// check header or url parameters or post parameters for token
const token = event.authorizationToken;
if (!token) return callback(null, 'Unauthorized');
// verifies secret and checks exp
jwt.verify(token, process.env.JWT_SECRET, (err, decoded) => {
if (err) return callback(null, 'Unauthorized');
// if everything is good, save to request for use in other routes
return callback(null, generatePolicy(decoded._id, 'Allow', event.methodArn));
});
};
export {
auth
};
我还创建了一个响应助手实用程序,我在任何地方都使用它来向用户返回响应 -
const responseHelper = (response, context, callback, status = 404) => {
eventLogger(["----RESPONSE DATA----", response], context.functionName);
callback(null, {
statusCode: status,
body: JSON.stringify(response),
headers: {
"Access-Control-Allow-Origin" : "*", // Required for CORS support to work
"Access-Control-Allow-Credentials" : true, // Required for cookies, authorization headers with HTTPS
"Content-Type": "application/json"
}
});
};
因此,如您所见,我已将 cors: true 添加到路由 yml,并将 cors 标头添加到我的所有 lambda 响应中。在谷歌上,我遇到了这个答案,我也尝试将这些添加到 default_4xx、default_5xx 和过期令牌响应中
但是,我仍然遇到同样的错误 -
Access to XMLHttpRequest at '<url>/dev/user/me' from origin '<site_url>' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
那么,我在这里错过了什么吗?或者任何人都可以在这里帮助找到并解决这个问题?