node.js - axios post request.body 为空对象

Question

我正在尝试从我的 react 中发布数据。后端 - express 。这是后端代码:

var express = require('express');
var app = express();
var bodyParser = require("body-parser");
var  methodOverride = require("method-override");
var mongoose = require("mongoose");
var expressSanitizer = require("express-sanitizer");

mongoose.connect("mongodb://localhost/blog-react");

//app config
app.set("view engine", "ejs");
app.use(express.static("public"));
app.use(bodyParser.urlencoded({extended: true}));
//must be after parser
app.use(expressSanitizer());
app.use(methodOverride("_method"));

//schema config
var blogSchema = new mongoose.Schema({
    title: String,
    image: String,
    body: String,
    //it should be date. With default value now.
    created: {
        type: Date, default: Date.now
    }
});

var Blog = mongoose.model("Blog", blogSchema);


function handle500(response, error){
    console.log(error.stack);
    response.status(500);
    response.json({error: "error: internal server error"});     
}

app.post("/api/blogs", function(request, response){         
    var blog = {
        title: request.sanitize(request.body.title),
        image: request.sanitize(request.body.image),
        body: request.sanitize(request.body.body)
    };
    console.log(request.body);
    Blog.create(blog, function(error, newBlog){
        if(error){
            console.log("inside post handler ERROR")
            handle500(response, error);
        }
        else{
            console.log("inside post handler OK")
            response.json({status: "success"});         
        }
    }); 
});

react 代码:

    var requestUrl = "/api/blogs";      
    var blog = {
        title: "a",
        image: "b",
        body: "c"
    }   
    axios.post(requestUrl, blog)
    .then(function(response){
        console.log("success",response.data)
    })
    .catch(function(response){
        console.log("error", response);
    }); 

当我通过 axios 发布数据时 - request.body 始终是 {}但是，如果我通过常规形式发布数据 - 一切都是正确的 - request.body 包含所有预期数据。

我对 axios 做错了什么？

Answer 1

您缺少一个中间件，bodyParser.json() .将其添加到您的配置中。

mongoose.connect("mongodb://localhost/blog-react");

app.set("view engine", "ejs");
app.use(express.static("public"));
app.use(bodyParser.json()); // <--- Here
app.use(bodyParser.urlencoded({extended: true}));