Node.js 使用邮递员可以看到图像吗？

我已经创建了一个Node.JS REST API服务器，并试图通过在上发送GET请求来测试它https://localhost:3443/public/images/logo.png 该logo.png图像存在，我可以在目录中看到它。但是邮递员给了我一条404错误信息

这是我的imagesRouter.js：

这是我的app.js文件：

编辑：这是我的应用程序文件树：

---

您需要指定静态路由器的底部以指向公用文件夹。您当前正在以当前代码在根路由上装载公用文件夹。你可以换这条线

app.useexpress.staticpath.join__dirname，“public”

致：

app.use'/public'，express.staticpath.join__dirname'，public'

---

或者，您可以通过以下方式从postman或任何其他客户端调用端点：https://localhost:3443/images/logo.png

您的目录结构看起来如何？文件是否位于public/images/logo.png相对于app.js的根目录？@abondoa：我把我的app files树放在编辑部分。非常感谢abondon，你能帮我解决这个问题吗？

const express = require('express');
const bodyParser = require('body-parser');

const Images = require('../models/images');
var authenticate = require('../authenticate');

const imagesRouter = express.Router();
const cors = require('./cors');

imagesRouter.use(bodyParser.json());

imagesRouter.options('*', cors.corsWithOptions, (req, res) => { res.sendStatus(200); } );


imagesRouter.route('/')
//.options(cors.corsWithOptions, (req, res) => { res.sendStatus(200); })
.get(cors.cors, (req,res,next) => {
    Images.find({})
    .then((images) => {
        res.statusCode = 200;
        res.setHeader('Content-Type', 'application/json');
        res.json(images);

    }, (err) => next(err))
    .catch((err) => next(err));
})



module.exports = imagesRouter;

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 index = require('./routes/index');
var usersRouter = require('./routes/usersRouter');
var imagesRouter = require('./routes/imagesRouter');
const uploadRouter = require('./routes/uploadRouter');

const Images = require('./models/images');




//const uploadRouter = require('./routes/uploadRouter');
//const favoriteRouter = require('./routes/favoriteRouter')
var config = require('./config');

const mongoose = require('mongoose');
//mongoose.set('useCreateIndex', true);
mongoose.Promise = require('bluebird');

var passport = require('passport');
var authenticate = require('./authenticate');

// Connection URL
const url = config.mongoUrl;
const connect = mongoose.connect(url, {
    //useMongoClient: true,
    /* other options */
     useNewUrlParser: true ,
     useUnifiedTopology: true 
  });

connect.then((db) => {
    console.log("Connected correctly to server");
}, (err) => { console.log(err); });

var app = express();

// Secure traffic only
app.all('*', (req, res, next) => {
  if (req.secure) {
    return next();
  }
  else {
    res.redirect(307, 'https://' + req.hostname + ':' + app.get('secPort') + req.url);
  }
});

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));



app.use(passport.initialize());

app.use('/', index);
app.use('/users', usersRouter);


app.use(express.static(path.join(__dirname, 'public')));

app.use('/public/images',imagesRouter);
app.use('/imageUpload',uploadRouter);

//app.use('/imageUpload',uploadRouter);
//app.use('/favorites',favoriteRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;