我如何能使出站HTTP POST请求,与数据,在node.js?


当前回答

我喜欢超级代理的简单性(https://github.com/visionmedia/superagent)。节点和浏览器上的API相同。

;(async function() {
  var response = await superagent.post('http://127.0.0.1:8125/', {age: 2})
  console.log(response)
})

还有节点获取(https://www.npmjs.com/package/node-fetch),它有一个API来匹配从浏览器获取-然而这需要手动查询字符串编码,不能自动处理内容类型,或者超级代理所做的任何其他工作。

其他回答

有许多可用的开源库,您可以使用它们在Node中发出HTTP POST请求。

1. Axios(推荐)

const axios = require('axios');

const data = {
    name: 'John Doe',
    job: 'Content Writer'
};

axios.post('https://reqres.in/api/users', data)
    .then((res) => {
        console.log(`Status: ${res.status}`);
        console.log('Body: ', res.data);
    }).catch((err) => {
        console.error(err);
    });

2. 针

const needle = require('needle');

const data = {
    name: 'John Doe',
    job: 'Content Writer'
};

needle('post', 'https://reqres.in/api/users', data, {json: true})
    .then((res) => {
        console.log(`Status: ${res.statusCode}`);
        console.log('Body: ', res.body);
    }).catch((err) => {
        console.error(err);
    });

3.请求

const request = require('request');

const options = {
    url: 'https://reqres.in/api/users',
    json: true,
    body: {
        name: 'John Doe',
        job: 'Content Writer'
    }
};

request.post(options, (err, res, body) => {
    if (err) {
        return console.log(err);
    }
    console.log(`Status: ${res.statusCode}`);
    console.log(body);
});

4. 本地HTTPS模块

const https = require('https');

const data = JSON.stringify({
    name: 'John Doe',
    job: 'Content Writer'
});

const options = {
    hostname: 'reqres.in',
    path: '/api/users',
    method: 'POST',
    headers: {
        'Content-Type': 'application/json',
        'Content-Length': data.length
    }
};


const req = https.request(options, (res) => {
    let data = '';

    console.log('Status Code:', res.statusCode);

    res.on('data', (chunk) => {
        data += chunk;
    });

    res.on('end', () => {
        console.log('Body: ', JSON.parse(data));
    });

}).on("error", (err) => {
    console.log("Error: ", err.message);
});

req.write(data);
req.end();

有关详细信息,请查看这篇文章。

Request-Promise提供基于承诺的响应。 非2xx的HTTP响应代码将导致承诺被拒绝。这可以通过设置选项来覆盖。简单= false

var options = {
  method: 'POST',
  uri: 'http://api.posttestserver.com/post',
  body: {
  some: 'payload'
 },
  json: true // Automatically stringifies the body to JSON
};

rp(options)
.then(function (parsedBody) {
    // POST succeeded...
})
.catch(function (err) {
    // POST failed...
});

如果您正在寻找基于承诺的HTTP请求,axios可以很好地完成它的工作。

  const axios = require('axios');

  axios.post('/user', {firstName: 'Fred',lastName: 'Flintstone'})
      .then((response) => console.log(response))
      .catch((error) => console.log(error));

OR

await axios.post('/user', {firstName: 'Fred',lastName: 'Flintstone'})

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。

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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