当我甚至没有定义passport策略时，Postman显示“未知身份验证策略\”本地\“”

npm install passport passport-local

const passport = require('passport');
const LocalStrategy = require('passport-local').Strategy;

// 假设您有一个User模型
const User = require('./models/User');

passport.use(new LocalStrategy(
  function(username, password, done) {
    User.findOne({ username: username }, function (err, user) {
      if (err) { return done(err); }
      if (!user) { return done(null, false); }
      if (!user.validPassword(password)) { return done(null, false); }
      return done(null, user);
    });
  }
));

passport.serializeUser(function(user, done) {
  done(null, user.id);
});

passport.deserializeUser(function(id, done) {
  User.findById(id, function(err, user) {
    done(err, user);
  });
});

const express = require('express');
const app = express();

app.use(express.json());
app.use(passport.initialize());
app.use(passport.session());

// 定义路由
app.post('/login', 
  passport.authenticate('local', { failureRedirect: '/login' }),
  function(req, res) {
    res.redirect('/');
  });