javascript - 在 Node.JS 中从服务器端向客户端发送 GET 请求 JSON 对象

Question

我是 Node.js 和服务器端脚本的新手，目前正在使用此处找到的breerydb-node 包装器进行练习 ( https://www.npmjs.com/package/brewerydb-node )

我目前有以下服务器端代码，可以将适当的 JSON 对象记录到命令行

var express = require('express');
var app = express();
var morgan = require('morgan');
var bodyParser = require('body-parser');
var BreweryDb = require('brewerydb-node');
var brewdb = new BreweryDb([api-key here]);
var request = require('request');

app.use(bodyParser.json()); 

brewdb.breweries.getById("g0jHqt", {}, function(err, beer) {
    if(err) {
        console.log(res.statusCode());
    } else {
        console.log(beer.name);
    }
})

app.listen(8000, function() {
    console.log("Listening at http://localhost:8000");
})

我不确定如何将该对象作为响应发送，我可以使用客户端代码对其进行解析，因为此包装器中没有“res”或“req”参数。

Answer 1

您想将请求包装在路由中，如下所示:

var express = require('express');
var app = express();
var morgan = require('morgan');
var bodyParser = require('body-parser');
var BreweryDb = require('brewerydb-node');
var brewdb = new BreweryDb([api-key here]);
var request = require('request');

app.use(bodyParser.json()); 

app.get('/breweries/:id', function(req,res){
  // in here a request to http://localhost:8000/breweries/g0jHqt will fetch the same as your example code
  brewdb.breweries.getById(req.params.id, {}, function(err, beer) {
    if(err) {
        console.error(err);
        res.status(500).send("An error occurred"); 
    } else if(beer) { // we found the beer
        res.send(beer);
    } else{
        res.status(404).send('We could not find your beer');
    }
  })
});

app.listen(8000, function() {
    console.log("Listening at http://localhost:8000");
})