javascript - 如何将 JSON 数据传递到 Express REST API

Question

我正在使用 Node/Express 创建 REST API，并且有一个关于设置 API 以及如何将 JSON 文件合并到其中的问题。以下是我想要查找的 JSON 数据的示例，其中包括 ID 号、型号和颜色:

{ “1”:{ "car_model": "法拉利", “颜色”:“银色” }, “2”:{ "car_model": "保时捷", “颜色”:“绿色” }, “3”:{ "car_model": "凯美瑞", “颜色”:“蓝色” }}

现在，我想让 GET 路由返回 JSON 列表中的所有汽车，并返回 ID、颜色和型号。我不确定如何将 JSON 数据合并到请求中(假设它位于我的硬盘上的路径/JSON)

我将以下代码设置为 API 的基础:

// BASE SETUP
// =============================================================================

// call the packages we need
var express    = require('express');        // call express
var app        = express();                 // define our app using express
var bodyParser = require('body-parser');

// configure app to use bodyParser()
// this will let us get the data from a POST
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());

var port = process.env.PORT || 8080;        // set our port


// ROUTES FOR OUR API
// =============================================================================
var router = express.Router();              // get an instance of the express Router

// test route to make sure everything is working (accessed at GET http://localhost:8080/api)
router.get('/endpoint_get', function(req, res) {
    res.json({ message: 'hooray! welcome to our api!' });   
});

router.post('/endpoint_post', function(req, res) {
    res.json({ message: 'hooray! welcome to our api!' });   
});


// REGISTER OUR ROUTES -------------------------------
// all of our routes will be prefixed with /endpoint.com
app.use('/endpoint.com/', router);

// START THE SERVER
// =============================================================================
app.listen(port);
console.log('Magic happens on port ' + port);

不一定使用此代码，我希望任何人提供一些指导或帮助，或者提供如何将 JSON 数据(来自某个随机文件)合并到 HTTP 请求中的示例。谢谢

Answer 1

const jsonDoc = require('../Desktop/jsonDoc.json');// top of file...


router.get('/endpoint_get', function(req, res) {
try{
let jsonObj = JSON.parse(jsonDoc) /*{ "1": { "car_model": "Ferrari", "color": "Silver" }, "2": { "car_model": "Porsche", "color": "Green" }, "3": { "car_model": "Camry", "color": "Blue" } }*/
console.log(jsonObj)

    res.json({
        message: 'hooray! welcome to our api!',
        jsonDoc:JSON.stringify(jsonObj) 
     });   
/* returns {
  "message": "hooray! welcome to our api!",
  "jsonDoc": { "1": { "car_model": "Ferrari", "color": "Silver" }, "2": { "car_model": "Porsche", "color": "Green" }, "3": { "car_model": "Camry", "color": "Blue" } }
}*/

}catch(error){ /* now if anything above fails a error code can be returned to the caller and debug info can be sent to the developer*/
console.trace(error);// trace out the error.
res.sendStatus(500)// return error code to user.
}
    });