我试过:
app.get('/', function(req, res, next) {
var e = new Error('error message');
e.status = 400;
next(e);
});
and:
app.get('/', function(req, res, next) {
res.statusCode = 400;
var e = new Error('error message');
next(e);
});
但是总会出现一个500的错误代码。
当前回答
从我在Express 4.0中看到的情况来看，这对我来说是可行的。这是一个验证所需中间件的示例。
function apiDemandLoggedIn(req, res, next) {
// if user is authenticated in the session, carry on
console.log('isAuth', req.isAuthenticated(), req.user);
if (req.isAuthenticated())
return next();
// If not return 401 response which means unauthroized.
var err = new Error();
err.status = 401;
next(err);
}
其他回答
我建议使用Boom包来处理http错误代码的发送。
从我在Express 4.0中看到的情况来看，这对我来说是可行的。这是一个验证所需中间件的示例。
function apiDemandLoggedIn(req, res, next) {
// if user is authenticated in the session, carry on
console.log('isAuth', req.isAuthenticated(), req.user);
if (req.isAuthenticated())
return next();
// If not return 401 response which means unauthroized.
var err = new Error();
err.status = 401;
next(err);
}
在特快4.0中，他们做对了:)
res.sendStatus(statusCode)
// Sets the response HTTP status code to statusCode and send its string representation as the response body.
res.sendStatus(200); // equivalent to res.status(200).send('OK')
res.sendStatus(403); // equivalent to res.status(403).send('Forbidden')
res.sendStatus(404); // equivalent to res.status(404).send('Not Found')
res.sendStatus(500); // equivalent to res.status(500).send('Internal Server Error')
//If an unsupported status code is specified, the HTTP status is still set to statusCode and the string version of the code is sent as the response body.
res.sendStatus(2000); // equivalent to res.status(2000).send('2000')
老问题了，但谷歌仍在播。在Express的当前版本(3.4.0)中，你可以在调用next(err)之前修改res.statusCode:
res.statusCode = 404;
next(new Error('File not found'));
根据Express (Version 4+)文档，您可以使用:
res.status(400);
res.send('None shall pass');
http://expressjs.com/4x/api.html#res.status
< = 3.8
res.statusCode = 401;
res.send('None shall pass');
