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我剛開始在Express框架中使用node.js，並試圖理解內置路由是如何工作的。我發現可以使用其他「子路由」來定義「主」路由器。目前，我的應用程序最初發出一個獲取請求，從MySQL數據庫加載下拉列表。我添加了一個演示按鈕，該按鈕應該在下拉列表中輸入值，並將其作爲查詢參數發送給我的子路線。當點擊子路徑按鈕，我得到一個404
我app.js：節點子路由返回404
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/index');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');
// 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 handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
}
// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
module.exports = app;
我index.js（主要途徑）：
var express = require('express');
var router = express.Router();
var models = require('../models');
router.use('/savings', require('./savings.js'));
/* GET home page with locations and their initial data collection dates */
router.get('/', function(req, res, next) {
models.Location.findAll({
attributes: ['locationName', 'initializationDate']
}).then(function(locations) {
res.render('index', {
title: 'Solar Data Savings',
locations: locations
});
});
});
module.exports = router;
savings.js （子路徑）：
var express = require('express');
var router = express.Router();
var models = require('../models');
/* GET calculate solar data savings and reroute */
router.get('/savings', function(req, res, next) {
req.param('locationID');
models.Bank.findAll({
attributes: ['bankID'],
include: [{
model: Location,
where: { locationID: Sequelize.col('bank.locationID') }
}]
}).then(function(banks) {
res.render('index', {
title: 'Solar Data Savings',
banks: banks
});
});
});
module.exports = router;
index.pug：
extends layout
block content
div(class="container-fluid")
h1= title
p This is the #{title} project website
form(action="/savings")
div(class="form-group")
label(for="locations")
div(class="col-sm-4")
select(id="locations" class="form-control")
-for(var i = 0; i < locations.length; i++) {
option(value="#{locations[i].dataValues.locationID") #{locations[i].getLocationName()}
-}
div(class="col-sm-4")
input(type="submit", value="Get Bank")
我相信我誤解了路由的細微差別，並且我沒有運氣就搜索到了這個特定問題的解決方案。幫助非常感謝
謝謝，我應該抓到了那個（： 也是我使用後o只是爲了嘗試和觸發路線，我刪除了表格（因爲沒有任何東西需要從用戶身上持續下去），並用鏈接替換了提交按鈕。 –