我如何能使出站HTTP POST请求,与数据,在node.js?


当前回答

在为我的项目创建了一个低级实用程序来处理帖子和获取请求之后,我决定在这里发布我的努力。这里有一个关于发送JSON数据的http和https POST请求的代码片段。

const http = require("http")
const https = require("https")

// Request handler function
let postJSON = (options, postData, callback) => {

    // Serializing JSON
    post_data = JSON.stringify(postData)

    let port = options.port == 443 ? https : http

    // Callback function for the request
    let req = port.request(options, (res) => {
        let output = ''
        res.setEncoding('utf8')

        // Listener to receive data
        res.on('data', (chunk) => {
            output += chunk
        });

        // Listener for intializing callback after receiving complete response
        res.on('end', () => {
            let obj = JSON.parse(output)
            callback(res.statusCode, obj)
        });
    });

   // Handle any errors occurred while making request
    req.on('error', (err) => {
        //res.send('error: ' + err.message)
    });

    // Request is made here, with data as string or buffer
    req.write(post_data)
    // Ending the request
    req.end()
};

let callPost = () => {

    let data = {
        'name': 'Jon',
        'message': 'hello, world'
    }

    let options = {
        host: 'domain.name',       // Your domain name
        port: 443,                 // 443 for https and 80 for http
        path: '/path/to/resource', // Path for the request
        method: 'POST',            
        headers: {
            'Content-Type': 'application/json',
            'Content-Length': Buffer.byteLength(data)
        }
    }

    postJSON(options, data, (statusCode, result) => {
        // Handle response
        // Process the received data
    });

}

其他回答

我使用Restler和Needle用于生产目的。 它们都比本地httprequest强大得多。可以使用基本的身份验证、特殊的头条目甚至上传/下载文件进行请求。

至于post/get操作,它们也比使用httprequest的原始ajax调用简单得多。

needle.post('https://my.app.com/endpoint', {foo:'bar'}, 
    function(err, resp, body){
        console.log(body);
});

简单且无依赖。使用承诺,让你可以等待结果。它返回响应体,不检查响应状态代码。

const https = require('https');

function httpsPost({body, ...options}) {
    return new Promise((resolve,reject) => {
        const req = https.request({
            method: 'POST',
            ...options,
        }, res => {
            const chunks = [];
            res.on('data', data => chunks.push(data))
            res.on('end', () => {
                let resBody = Buffer.concat(chunks);
                switch(res.headers['content-type']) {
                    case 'application/json':
                        resBody = JSON.parse(resBody);
                        break;
                }
                resolve(resBody)
            })
        })
        req.on('error',reject);
        if(body) {
            req.write(body);
        }
        req.end();
    })
}

用法:

async function main() {
    const res = await httpsPost({
        hostname: 'sentry.io',
        path: `/api/0/organizations/org/releases/${changesetId}/deploys/`,
        headers: {
            'Authorization': `Bearer ${process.env.SENTRY_AUTH_TOKEN}`,
            'Content-Type': 'application/json',
        },
        body: JSON.stringify({
            environment: isLive ? 'production' : 'demo',
        })
    })
}

main().catch(err => {
    console.log(err)
})

使用Node.js HTTP库进行任意HTTP请求。

不要使用不提供任何新功能的第三方包。

使用Node.js内置。

https://nodejs.org/api/http.html#httprequesturl-options-callback

示例来自文档中的http。request向你展示了如何创建一个“hello world”POST请求。

下面是一个例子。在评论中提出问题,例如,如果你正在学习Node.js,想要更多的资源。

const http = require('node:http');

const postData = JSON.stringify({
    'msg': 'Hello World!',
});

const options = { 
    hostname: 'www.google.com',
    port: 80, 
    path: '/upload',
    method: 'POST',
    headers: {
        'Content-Type': 'application/json',
        'Content-Length': Buffer.byteLength(postData),
    },  
};

const req = http.request(options, (res) => {
    console.log(`STATUS: ${res.statusCode}`);
    console.log(`HEADERS: ${JSON.stringify(res.headers)}`);
    res.setEncoding('utf8');
    res.on('data', (chunk) => {
        console.log(`BODY: ${chunk}`);
    }); 
    res.on('end', () => {
        console.log('No more data in response.');
    }); 
});

req.on('error', (e) => {
    console.error(`problem with request: ${e.message}`);
});

// Write data to request body
req.write(postData);
req.end();
~                                                                                                   
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请求现在已弃用。建议您使用替代方案

无特定顺序且极不完整的:

const https = require('https'); node-fetch axios 得到了 搞 弯曲 make-fetch-happen unfetch tiny-json-http 针 urllib

统计比较 一些代码示例

最初的回答:

如果使用请求库,这将变得容易得多。

var request = require('request');

request.post(
    'http://www.yoursite.com/formpage',
    { json: { key: 'value' } },
    function (error, response, body) {
        if (!error && response.statusCode == 200) {
            console.log(body);
        }
    }
);

除了提供一个不错的语法,它使json请求更容易,处理oauth签名(twitter等),可以做多部分的表单(例如上传文件)和流。

安装请求使用npm install request命令

下面是一个使用node.js向谷歌编译器API发出POST请求的例子:

// We need this to build our post string
var querystring = require('querystring');
var http = require('http');
var fs = require('fs');

function PostCode(codestring) {
  // Build the post string from an object
  var post_data = querystring.stringify({
      'compilation_level' : 'ADVANCED_OPTIMIZATIONS',
      'output_format': 'json',
      'output_info': 'compiled_code',
        'warning_level' : 'QUIET',
        'js_code' : codestring
  });

  // An object of options to indicate where to post to
  var post_options = {
      host: 'closure-compiler.appspot.com',
      port: '80',
      path: '/compile',
      method: 'POST',
      headers: {
          'Content-Type': 'application/x-www-form-urlencoded',
          'Content-Length': Buffer.byteLength(post_data)
      }
  };

  // Set up the request
  var post_req = http.request(post_options, function(res) {
      res.setEncoding('utf8');
      res.on('data', function (chunk) {
          console.log('Response: ' + chunk);
      });
  });

  // post the data
  post_req.write(post_data);
  post_req.end();

}

// This is an async file read
fs.readFile('LinkedList.js', 'utf-8', function (err, data) {
  if (err) {
    // If this were just a small part of the application, you would
    // want to handle this differently, maybe throwing an exception
    // for the caller to handle. Since the file is absolutely essential
    // to the program's functionality, we're going to exit with a fatal
    // error instead.
    console.log("FATAL An error occurred trying to read in the file: " + err);
    process.exit(-2);
  }
  // Make sure there's data before we post it
  if(data) {
    PostCode(data);
  }
  else {
    console.log("No data to post");
    process.exit(-1);
  }
});

我已经更新了代码,以展示如何从文件中发布数据,而不是硬编码的字符串。它使用异步文件系统。readFile命令来实现这一点,在成功读取后发布实际代码。如果出现错误,则抛出错误,如果没有数据,则进程退出,并显示一个负值以指示失败。