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我刚开始在Express框架中使用node.js，并试图理解内置路由是如何工作的。我发现可以使用其他“子路由”来定义“主”路由器。目前，我的应用程序最初发出一个获取请求，从MySQL数据库加载下拉列表。我添加了一个演示按钮，该按钮应该在下拉列表中输入值，并将其作为查询参数发送给我的子路线。当点击子路径按钮，我得到一个404
我app.js：节点子路由返回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（主要途径）：
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 （子路径）：
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")
我相信我误解了路由的细微差别，并且我没有运气就搜索到了这个特定问题的解决方案。帮助非常感谢
谢谢，我应该抓到了那个（： 也是我使用后o只是为了尝试和触发路线，我删除了表格（因为没有任何东西需要从用户身上持续下去），并用链接替换了提交按钮。 –