在Express 4中未定义POST主体

Question

我试图发布到快递4中的路线，但是当我尝试记录身体时我得到了未定义的消息，这是我的配置：

/server.js

/* main module entry point */
'use strict';

var express    = require( './server/node_modules/express' );
var bodyParser = require( './server/node_modules/body-parser' );
var env        = require( './server/env' );
var app        = module.exports = express();

app.use( require( './server/modules/auth' ) );

app.use( express.static( __dirname + '/client/' ) );

app.use( bodyParser.urlencoded( {
    extended: true
} ) );

app.use( bodyParser.json() );

app.get( '/*', function ( require, response ) {

    response.sendFile( __dirname + '/client/index.html' );

} );

app.listen( env.port, function () {

    console.log( 'Listening to port ' + env.port );

} );

/server/modules/auth/index.js

module.exports = (function () {

    var express = require('express'),
        router = express.Router(),
        signin = require('./signin.controller');

    router.route( '/signin' )
        .get( signin.get )
        .post( signin.post );

    return router;

})();

/server/modules/auth/sigin.controller.js

module.exports = (function () {

models = require( '../../database/models' );

function get( request, response ) {

    models.users.findAll().then( function ( users ) {

        response.json( users );

    } );
    console.log( 'Sign In' );

}

function post( request, response ) {

    console.log( 'Sign In ' + request.body );//Returns "Sign In Undefined"
    response.send('Signed In'+ request.body);

}

return {
    get: get,
    post: post
}

})();

代码中有什么问题吗？我正在使用邮递员来测试它：

我正在使用的标题是：

Content-Type：application / json

Answer 1

订单很重要。试试这个：

/* main module entry point */
'use strict';

var express    = require( './server/node_modules/express' );
var bodyParser = require( './server/node_modules/body-parser' );
var env        = require( './server/env' );
var app        = module.exports = express();

app.use( express.static( __dirname + '/client/' ) );

app.use( bodyParser.urlencoded( {
    extended: true
} ) );

app.use( bodyParser.json() );

app.use( require( './server/modules/auth' ) );

app.get( '/*', function ( require, response ) {

    response.sendFile( __dirname + '/client/index.html' );

} );

app.listen( env.port, function () {

    console.log( 'Listening to port ' + env.port );

} );

基本上你告诉表示不要在运行auth.js中的中间件之后解析正文内容。

Answer 2

从4.16开始，可以随时使用express.json()代替body-parse，更多细节：express.json vs bodyParser.json。