如何使用express.js从API获取数据

原料药 () 该API用PHP编写脚本，接受GET和POST命令，作为回报，它使用JSON响应数据进行响应。 要检索数据，API需要“功能”和“操作”以及其他参数，如下所示。 用于检索所有卡车的命令 用于检索所有卡车的命令 有效载荷 { “功能”：“获取”， “操作”：“获取所有卡车” } 按id检索卡车检查详细信息的命令 有效载荷 { “功能”：“获取”， “操作”：“获取检查历史记录”， “卡车司机”：“1” } 注意：您将从上面的“get_all_truck”命令中获得truckId

对你有什么期望

作为软件开发人员，您的任务是设计和开发基于web的后端解决方案，该解决方案将具有：

仪表板：- •检索并指示卡车总数
•检索并指出要求的检查维修次数2。列出所有卡车：- •实施搜索选项

检查表：- •通过卡车实施过滤器 我有一些使用express.js的代码，我得到的bt是404错误，没有检索到数据

app.js

const apiCallFromRequest = require('./Request')
const apiCallFromNode = require('./NodeJsCall')

const http = require('http')

http.createServer((req, res) => {
        if(req.url === "/request"){
            apiCallFromRequest.callApi(function(response){
                //console.log(JSON.stringify(response));
                res.write(JSON.stringify(response));
                res.end();
            });
        }
        else if(req.url === "/node"){
            apiCallFromNode.callApi(function(response){
                res.write(response);
                res.end();
            });
        }
        
        // res.end();
}).listen(3000);

console.log("service running on 3000 port....");

const https = require('https');

_EXTERNAL_URL = 'https://api.mosmarts.com/truck/v0/api.php';


const callExternalApiUsingHttp = (callback) => {
    https.get(_EXTERNAL_URL, (resp) => {
    let data = '';

    // A chunk of data has been recieved.
    resp.on('data', (chunk) => {
        data += chunk;
    });

    // The whole response has been received. Print out the result.
    resp.on('end', () => {
        return callback(data);
       // console.log(JSON.stringify(data));
    });

    }).on("error", (err) => {

    console.log("Error: " + err.message);
    });
}

module.exports.callApi = callExternalApiUsingHttp;

    const request = require('request');

_EXTERNAL_URL = 'https://api.mosmarts.com/truck/v0/api.php';

const callExternalApiUsingRequest = (callback) => {
    request(_EXTERNAL_URL, { json: true }, (err, res, body) => {
    if (err) {
        return callback(err);
     }
    return callback(body);
    });
}

module.exports.callApi = callExternalApiUsingRequest;

NodeJsCall.js

const apiCallFromRequest = require('./Request')
const apiCallFromNode = require('./NodeJsCall')

const http = require('http')

http.createServer((req, res) => {
        if(req.url === "/request"){
            apiCallFromRequest.callApi(function(response){
                //console.log(JSON.stringify(response));
                res.write(JSON.stringify(response));
                res.end();
            });
        }
        else if(req.url === "/node"){
            apiCallFromNode.callApi(function(response){
                res.write(response);
                res.end();
            });
        }
        
        // res.end();
}).listen(3000);

console.log("service running on 3000 port....");

const https = require('https');

_EXTERNAL_URL = 'https://api.mosmarts.com/truck/v0/api.php';


const callExternalApiUsingHttp = (callback) => {
    https.get(_EXTERNAL_URL, (resp) => {
    let data = '';

    // A chunk of data has been recieved.
    resp.on('data', (chunk) => {
        data += chunk;
    });

    // The whole response has been received. Print out the result.
    resp.on('end', () => {
        return callback(data);
       // console.log(JSON.stringify(data));
    });

    }).on("error", (err) => {

    console.log("Error: " + err.message);
    });
}

module.exports.callApi = callExternalApiUsingHttp;

    const request = require('request');

_EXTERNAL_URL = 'https://api.mosmarts.com/truck/v0/api.php';

const callExternalApiUsingRequest = (callback) => {
    request(_EXTERNAL_URL, { json: true }, (err, res, body) => {
    if (err) {
        return callback(err);
     }
    return callback(body);
    });
}

module.exports.callApi = callExternalApiUsingRequest;

Request.js

const apiCallFromRequest = require('./Request')
const apiCallFromNode = require('./NodeJsCall')

const http = require('http')

http.createServer((req, res) => {
        if(req.url === "/request"){
            apiCallFromRequest.callApi(function(response){
                //console.log(JSON.stringify(response));
                res.write(JSON.stringify(response));
                res.end();
            });
        }
        else if(req.url === "/node"){
            apiCallFromNode.callApi(function(response){
                res.write(response);
                res.end();
            });
        }
        
        // res.end();
}).listen(3000);

console.log("service running on 3000 port....");

const https = require('https');

_EXTERNAL_URL = 'https://api.mosmarts.com/truck/v0/api.php';


const callExternalApiUsingHttp = (callback) => {
    https.get(_EXTERNAL_URL, (resp) => {
    let data = '';

    // A chunk of data has been recieved.
    resp.on('data', (chunk) => {
        data += chunk;
    });

    // The whole response has been received. Print out the result.
    resp.on('end', () => {
        return callback(data);
       // console.log(JSON.stringify(data));
    });

    }).on("error", (err) => {

    console.log("Error: " + err.message);
    });
}

module.exports.callApi = callExternalApiUsingHttp;

    const request = require('request');

_EXTERNAL_URL = 'https://api.mosmarts.com/truck/v0/api.php';

const callExternalApiUsingRequest = (callback) => {
    request(_EXTERNAL_URL, { json: true }, (err, res, body) => {
    if (err) {
        return callback(err);
     }
    return callback(body);
    });
}

module.exports.callApi = callExternalApiUsingRequest;

---

嘿，杰拉尔德，你可以在谷歌上找到这类问题的简单答案

如果你是一个真正的初学者，我会向你推荐Axios npm。 下面是一个使用axios的非常简单的GET请求示例

axios.get（'https://api.github.com/users/mapbox')
。然后（响应=>{
console.log（response.data.created_at）；
});