[英]node js route not found
我有以下方法来验证我的用户:
app.all('/*', function(req, res, next) {
// CORS headers
res.header("Access-Control-Allow-Origin", "*"); // restrict it to the required domain
res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE,OPTIONS');
// Set custom headers for CORS
res.header('Access-Control-Allow-Headers', 'Content-type,Accept,X-Access-Token,X-Key');
if (req.method == 'OPTIONS') {
res.status(200).end();
} else {
next();
}
});
var auth = require('./auth.js');
router.post('/login', auth.login);
app.all('/api/*', [require('./middlewares/validateRequest')]);
// If no route is matched by now, it must be a 404
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
还有我的Auth.js
var jwt = require('jwt-simple');
var auth = {
login: function(req, res) {
var username = req.body.username || '';
var password = req.body.password || '';
if (username == '' || password == '') {
res.status(401);
res.json({
"status": 401,
"message": "Invalid credentials"
});
return;
}
// Fire a query to your DB and check if the credentials are valid
var dbUserObj = auth.validate(username, password);
if (!dbUserObj) { // If authentication fails, we send a 401 back
res.status(401);
res.json({
"status": 401,
"message": "Invalid credentials"
});
return;
}
if (dbUserObj) {
// If authentication is success, we will generate a token
// and dispatch it to the client
res.json(genToken(dbUserObj));
}
},
validate: function(username, password) {
// spoofing the DB response for simplicity
var dbUserObj = { // spoofing a userobject from the DB.
name: 'arvind',
role: 'admin',
username: 'arvind@myapp.com'
};
return dbUserObj;
},
validateUser: function(username) {
// spoofing the DB response for simplicity
var dbUserObj = { // spoofing a userobject from the DB.
name: 'arvind',
role: 'admin',
username: 'arvind@myapp.com'
};
return dbUserObj;
}
}
// private method
function genToken(user) {
var expires = expiresIn(7); // 7 days
var token = jwt.encode({
exp: expires
}, require('../config/secret')());
return {
token: token,
expires: expires,
user: user
};
}
function expiresIn(numDays) {
var dateObj = new Date();
return dateObj.setDate(dateObj.getDate() + numDays);
}
module.exports = auth;
该服务器在端口 8080 上运行。
因此,当我尝试访问http://localhost:8080/login 时,我收到以下错误消息:
Error: Not Found
at app.use.bodyParser.urlencoded.extended (/var/www/example/backend/server.js:34:15)
at Layer.handle [as handle_request] (/var/www/example/backend/node_modules/express/lib/router/layer.js:82:5)
at trim_prefix (/var/www/example/backend/node_modules/express/lib/router/index.js:302:13)
at /var/www/example/backend/node_modules/express/lib/router/index.js:270:7
at Function.proto.process_params (/var/www/example/backend/node_modules/express/lib/router/index.js:321:12)
at next (/var/www/example/backend/node_modules/express/lib/router/index.js:261:10)
at next (/var/www/example/backend/node_modules/express/lib/router/route.js:100:14)
at next (/var/www/example/backend/node_modules/express/lib/router/route.js:104:14)
at next (/var/www/example/backend/node_modules/express/lib/router/route.js:104:14)
at next (/var/www/example/backend/node_modules/express/lib/router/route.js:104:14)
但是,我的其余身份验证似乎正在工作,因为如果我去:
http://localhost:8080/api/user
我得到: {"status":401,"message":"Invalid Token or Key"}
谁能告诉我为什么我的登录不起作用?
完整的服务器脚本:
// BASE SETUP
// =============================================================================
var express = require('express'),
bodyParser = require('body-parser');
var app = express();
var router = express.Router();
var es = require('express-sequelize');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
extended: true
}));
// =============================================================================
//Secure
app.all('/*', function(req, res, next) {
// CORS headers
res.header("Access-Control-Allow-Origin", "*"); // restrict it to the required domain
res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE,OPTIONS');
// Set custom headers for CORS
res.header('Access-Control-Allow-Headers', 'Content-type,Accept,X-Access-Token,X-Key');
if (req.method == 'OPTIONS') {
res.status(200).end();
} else {
next();
}
});
var auth = require('./auth.js');
router.post('/login', auth.login);
app.all('/api/*', [require('./middlewares/validateRequest')]);
// If no route is matched by now, it must be a 404
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
var env = app.get('env') == 'development' ? 'dev' : app.get('env');
var port = process.env.PORT || 8080;
var Sequelize = require('sequelize');
// db config
var env = "dev";
var config = require('./database.json')[env];
var password = config.password ? config.password : null;
// initialize database connection
var sequelize = new Sequelize(
config.database,
config.user,
config.password,
{
logging: console.log,
define: {
timestamps: false
}
}
);
//Init models
var division_model = require('./lb_models/division/division_model')(express,sequelize,router);
var user_model = require('./lb_models/user/user_model')(express,sequelize,router);
var team_model = require('./lb_models/Team')(express,sequelize,router);
app.use('/api', router);
app.use(division_model);
app.use(user_model);
app.use(team_model);
// START THE SERVER
app.listen(port);
console.log('Magic happens on port ' + port);
尝试将您的 app.use(bodyParser...) 语句移到登录路径上方。 中间件的顺序很重要。 在调用 login 时,req 对象还没有通过 bodyParser 中间件。
此外,您的路由器实例安装在“/api”处,因此永远不会为“/login”调用路由器方法。 下面这行应该放在你的 404 catchall 之上:
app.use('/', router);
之前,你使用过 app.use('/api', router),这意味着你的路由器路由只会被查看以 '/api' 开头的任何请求。 此外,您将“使用”语句放得太低了。
设置中间件时,调用 app.use() 的顺序是关键。 在您的 server.js 中,您在设置正文解析器之前设置了应用程序路由。 意思是,当请求进来时,在命中您的应用程序逻辑之前不会被解析。 您需要将 app.use(bodyParser) 部分移动到代码的顶部。
var express = require('express'),
bodyParser = require('body-parser');
var app = express();
var router = express.Router();
var es = require('express-sequelize');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
extended: true
}));
也许你必须移动
app.use("/", (req, res, next) => {
res.status("404").json({message: "Not found"})
})
到代码底部,但在“app.listen()”之前,您在路由器中声明路由的顺序很重要,因此在声明所有这些路由之后放置“app.use”,将搜索所有匹配项上一条路线,如果没有找到,则进入最后一条路线
像这样:
.
..
...
app.use('/api', router);
app.use(division_model);
app.use(user_model);
app.use(team_model);
app.use("/", (req, res, next) => {
res.status("404").json({message: "Not found"})
})
// START THE SERVER
app.listen(port);
console.log('Magic happens on port ' + port);
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