Question

我在使用connect-flash工作时遇到了一些问题，我得到的错误信息是：

'错误：req.flash（）需要会话'

我已经看到这可能是因为应用程序的排序，但我不确定这是否是这种情况。

App.js：

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var session = require('express-session');
var flash = require('connect-flash');
var passport = require('passport');
var app = express();

app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use(session({secret: '{secret}', name: 'session_id', saveUninitialized: true, resave: true}));
app.use(passport.initialize());
app.use(passport.session());
app.use(flash());

路线等在

之下

flash生成代码：

passport.authenticate('local', { failureRedirect: '/login', successRedirect: '/', failureFlash: true})

Answer 1

问题在于如何渲染我的视图（使用req.flash数据）

更改此内容：

loginShow: function(req, res){
    res.render('login', { message: req.flash });
}

对此：

loginShow: function(req, res){
    res.render('login', { message: req.flash() });
}

修复了错误并导致connect-flash按预期运行。

Answer 2

您的redis服务器正在运行吗？尝试

SELECT maker FROM 
(SELECT maker, sum(cast(model1 as int)) as sum1, sum(cast(model2 as int)) as sum2 FROM
(SELECT p.maker, p.model as model1, pc.model as model2 FROM product AS p
FULL JOIN pc ON p.model = pc.model 
WHERE p.type = 'PC') AS a
GROUP BY maker) b 
WHERE sum1 = sum2

这解决了我的问题。

Express：req.flash（）需要会话

2 个答案: