Question

我试图将数据发布到我的Node应用

$.ajax({
    dataType: "json",
    method: "POST",
    url: "/users/new",
    data: {
        first_name: "Conor",
        last_name: "McGregor",
        id: 3
    },
    success: function (data) {
            console.log("Success: ", data);
    },
    error: function (error) {
        console.log("Error: ", error);
    }
});

。。。但我不确定如何从应用程序本身访问帖子数据。

userRouter.route("/new")
    .post(function (req, res) {
        console.log(req);
        //console.log(req.body); 
    }

经过一个多小时的搜索，我无法找到相关文档。知道怎么做到这一点吗？

编辑：这是我整个申请的入口点。它太乱了 - 抱歉。： - （

"use strict";
var express = require("express");
var app = express();
var port = process.env.PORT || 5000;
var http = require("http");
var bodyParser = require("body-parser");
var pg = require("pg");
var connectionConfig = {
    user: "test_role",
    password: "password", // See what happens if you remove this value.
    server: "localhost", // I think this would be your database's server and not localhost, normally.
    database: "experiment", // The database's name
};
var connectionString = "postgres://test_role:password@localhost/experiment";

var server = http.createServer(function(req, res) {
    pg.connect(connectionString, function(error, client, done) {
        var handleError = function(error) {
            if (!error) {
                return false;
            }
            console.log(error);
            if (client) {
                done(client);
            }

            res.writeHead(500, {
                "content-type": "text/plain"
            });
            res.end("An error occurred.");
            return true;
        };

        if (handleError(error)) return;

        client.query("INSERT INTO visit (date) VALUES ($1)", [new Date()], function(error, result) {
            if (handleError(error)) {
                return;
            }
            client.query("SELECT COUNT(date) AS count FROM visit", function(error, result) {
                if (handleError(error)) {
                    return;
                }
                done();
                res.writeHead(200, {
                    "content-type": "text-plain"
                });
                res.end("You are visitor number " + result.rows[0].count);
            });
        });
    });
});

server.listen(3001);

var navigation = [{
    link: "/",
    text: "Home",
    new_window: false
}, {
    link: "/users",
    text: "Users",
    new_window: false
}, {
    link: "/contact",
    text: "Contact",
    new_window: false
}, {
    link: "/terms",
    text: "Terms",
    new_window: false
}];

var userRouter = require("./src/routes/userRoutes")(navigation);

// Routes
app.use("/users", userRouter);


app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
    extended: true
}));
// Serve static files from the public directory
app.use(express.static("public"));
app.use("/public", express.static("public"));

app.set("views", "./src/views");

// Specify EJS as the templating engine
app.set("view engine", "ejs");

app.get("/", function(req, res) {
    res.render("index", {
        title: "Art is long. Life is short.",
        list: ["a", "b", "c", "d"],
        navigation: navigation
    });
});
app.get("/terms", function(req, res) {
    res.render("terms");
});
app.get("/about", function(req, res) {
    res.render("about");
});
app.get("/contact", function(req, res) {
    res.render("contact");
});

var server = app.listen(port, function() {
    var port = server.address().port;
    console.log("Listening on port : " + port + " . . .");
});

Answer 1

您需要一个身体解析器，并在路线前呼叫app.use：

var bodyparser = require('body-parser'),

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

// Routes
app.use("/users", userRouter);

Express按照声明的顺序将请求传递给每个处理程序，因此必须在userRouter之前使用正文解析器，否则在调用路由器之前不会解析正文。

Answer 2

您没有找到任何结果的原因是因为您一直在引用节点本身。为什么不查找特定于特定于文档的文档，因为您仅仅使用节点。

您不仅需要访问req.body，还必须使用express body parser中间件。

var express = require('express');
var bodyParser = require('body-parser');
var app = express();

// parse application/json
app.use(bodyparser.json());

// parse application/x-www-form-urlencoded
app.use(bodyParser.urlencoded({
  extended: true
}));

简单快速搜索＆＃34;表达req.body undefined＆＃34;或者＆＃34;表达访问POST数据＆＃34;会在几分钟内指出你正确的方向，而不是踩几个小时。研究某种解决方案的关键是知道你在寻找什么。同样在你的情况下，尝试理解节点：平台和表达之间的区别：框架。

我将数据发布到我的Node应用程序但似乎无法从Node本身中检索数据

2 个答案: