express无法向mysql写入数据？

jade代码：

$.ajax({                    url: 'index/index1post',                    data: {                        lv: $('#u1').val(),                        username: $('#u2').val(),                        userpwd: $('#u3').val()                    },                    type: 'POST',                    timeout: 36000,                    dataType: 'text',                    success: function (data, textStatus) {                    }

index.js代码：

var express = require('express');var router = express.Router();var mysql = require('mysql');var config = require('../config');var pool = mysql.createPool(config.mysql);router.get('/', function(req, res, next) {  res.render('index');});router.post('/index1post',function (req,res,next) {    var lv = req.body.lv;    var username = req.body.username;    var userpwd = req.body.userpwd;    pool.getConnection(function (err,connection) {        var $sql = 'INSERT INTO user(id, lv, username, userpwd) VALUES(0, ?, ?, ?)';        connection.query($sql,[lv, username, userpwd],function (err,result) {        });        connection.release();    });});module.exports = router;

一直报错：

POST /index/index1post 404 115.733 ms - 1223  

补充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 multer  = require('multer');var storage = multer.diskStorage({    destination: function (req, file, cb) {        cb(null, './uploads')    },    filename: function (req, file, cb) {        //var fileFormat = (file.originalname).split(".");        cb(null, file.originalname)    }});var upload = multer({ storage: storage });var index = require('./routes/index');var users = require('./routes/users');var login = require('./routes/login');var input1 = require('./routes/input1');var input2 = require('./routes/input2');var input3 = require('./routes/input3');var input4 = require('./routes/input4');var input5 = require('./routes/input5');var input6 = require('./routes/input6');var detail = require('./routes/detail');var detail2 = require('./routes/detail2');var equip = require('./routes/equip');var user = require('./routes/user');var app = express();app.post('/upload', upload.single('avatar'),function (req,res,next) {    var path = req.file.originalname;    console.log(path);    res.render('input1',{path1:path});});// view engine setupapp.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);app.use('/users', users);app.use('/login', login);app.use('/input1',input1);app.use('/input2',input2);app.use('/input3',input3);app.use('/input4',input4);app.use('/input5',input5);app.use('/input6',input6);app.use('/detail',detail);app.use('/detail2',detail2);app.use('/equip',equip);app.use('/user',user);// catch 404 and forward to error handlerapp.use(function(req, res, next) {  var err = new Error('Not Found');  err.status = 404;  next(err);});// error handlerapp.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 = upload;module.exports = app;