Question

每当我在路由文件中使用post请求方法时，我的快速应用程序似乎都会返回404 NOT FOUND。 GET请求工作正常，我只能在控制台中看到"GET"请求，即使我正在使用帖子请求。 app.js和routes / index.js之间是否存在一些可能导致此问题的缺失链接？

// routes/index.js
router.post('/foo', function (req, res, next) {
res.setHeader('Content-Type', 'application/json');
res.send('You sent: sdadad to Express');
})


// 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 index = require('./routes/index');

var app = express();
var cors = require('cors')
app.use(cors())

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


// 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;

结果：

Not Found 404
Error: Not Found
at C:\Users\willow\Desktop\backend\app.js:29:13
at Layer.handle [as handle_request] (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\layer.js:95:5)
at trim_prefix (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:317:13)
at C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:284:7
at Function.process_params (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:335:12)
at next (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:275:10)
at C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:635:15
at next (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:260:14)
at Function.handle (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:174:3)
at router (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:47:12)
at Layer.handle [as handle_request] (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\layer.js:95:5)
at trim_prefix (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:317:13)
at C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:284:7
at Function.process_params (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:335:12)
at next (C:\Users\willow\Desktop\backend\node_modules\express\lib\router\index.js:275:10)
at SendStream.error (C:\Users\willow\Desktop\backend\node_modules\serve-static\index.js:121:7)

Answer 1

你想做的事情在实践中应该是这样的：

// routes/index.js
module.exports = (express) => {
  // Create express Router
  var router = express.Router();

  // add routes
  router.route('/foo')
    .post((req, res) => {
       res.setHeader('Content-Type', 'application/json');
       res.send('You sent: sdadad to Express');
    });

  return router;
}


// 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 routes = require('./routes')(express); // require routes at routes/index.js

var app = express();
var cors = require('cors')
app.use(cors())

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


// 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;

Answer 2

我通常做的是创建一个函数，希望表达为像这样的param

（路径/ index.js）

function toView(){
    var newWindow = window.open();      
    var HTML_head = '<html><head></head><body><table>';
    var HTML_footer = '</table></body></html>';
    var new_HTML_page = "";
    var new_table = "";
    var html = "";

    $('table tbody tr input[type=checkbox]:checked').each(function() {
        html = $(this).closest("tr").clone().find('tr:last').remove().end().prop('outerHTML');
        new_table += html;     
    });         
    newHTML = HTML_head + new_table + HTML_footer;
    newWindow.document.write(newHTML);
}

然后我只是将此文件导入我的app.js

像这样（app.js）

"$varservertoreboot is rebooting" | Export-Csv $varoutfile -Append -NoClobber -NoTypeInformation

"$(get-date -f yyyy-MM-dd-HH-mm-ss) Today is $vardow, The system $varservertoreboot is rebooting" | Export-Csv $varoutfile

这样我就可以连接我的api和我的服务器。

Node.js表示router.post返回404未找到

2 个答案: