如何使用Node.js制作API代理？_Node.js_Api_Proxy_Get Request

如何使用Node.js制作API代理？

node.js api proxy

如何使用Node.js制作API代理？,node.js,api,proxy,get-request,Node.js,Api,Proxy,Get Request,由于GFW阻止了包括flickr在内的一些ip，我喜欢使用Node.js创建API代理，但是在http服务器中打开GET请求时遇到了麻烦。这是我的密码： var http = require('http'); var qs = require('querystring'); var curl = require('request'); var serverPort = 3000; http.createServer(function (request, response) { if(requ

由于GFW阻止了包括flickr在内的一些ip，我喜欢使用Node.js创建API代理，但是在http服务器中打开GET请求时遇到了麻烦。这是我的密码：

var http = require('http');
var qs = require('querystring');
var curl = require('request');
var serverPort = 3000;
http.createServer(function (request, response) {
  if(request.method === "GET") {
    response.writeHead(401, {'Content-Type': 'text/html'});
    response.write('<!doctype html><html><head><title>401</title></head><body>401: Unauthorized</body></html>');
    response.end();
  } else if(request.method === "POST") {
    if (request.url === "/") {
      var requestBody = '';
      request.on('data', function(data) {
        requestBody += data;
        if(requestBody.length > 1e7) {
          response.writeHead(413, 'Request Entity Too Large', {'Content-Type': 'text/html'});
          response.end('413: Request Entity Too Large');
        }
      });
      request.on('end', function() {
        var body = getrequest();
        if (body === false) {
          response.writeHead(502, 'Bad Gateway', {'Content-Type': 'text/html'});
          response.end('502: Bad Gateway');
        } else {
          response.writeHead(200, {'Content-Type': 'text/html'});
          response.write(body);
          response.end();
        }
      });
    } else {
      response.writeHead(404, 'Resource Not Found', {'Content-Type': 'text/html'});
      response.end('<!doctype html><html><head><title>404</title></head><body>404: Resource Not Found</body></html>');
    }
  } else {
    response.writeHead(405, 'Method Not Supported', {'Content-Type': 'text/html'});
    return response.end('<!doctype html><html><head><title>405</title></head><body>405: Method Not Supported</body></html>');
  }
}).listen(serverPort);
function getrequest(){
  return curl('https://api.flickr.com/services/rest/?method=flickr.photosets.getList&api_key={{insert_ur_api_key}}&user_id={{insert_ur_user_id}}&format=json', function (error, response, body) {
    if (error) {
      return false;
    } else {
      return body;
    }
  });
}
console.log('Server running at localhost:'+serverPort);

我认为问题在于

response.write（getrequest（））
getrequest是一个异步操作，您应该使用回调或promisify。如果使用回调，则getrequest函数应如下所示：
function getrequest(callback){
    curl('https://api.flickr.com/services/rest/?method=flickr.photosets.getList&api_key={{insert_ur_api_key}}&user_id={{insert_ur_user_id}}&format=json', (error, response, body)=> {
      if (error) {
          callback(error);
          return;
      } 
      callback(null, body);
    });
}

request.on('end', function() {
    getrequest((err, body)=>{
       if (err) {
           response.writeHead(502, 'Bad Gateway', {'Content-Type': 'text/html'});
           response.end('502: Bad Gateway');
       } else {
           response.writeHead(200, {'Content-Type': 'text/html'});
           response.write(body);
           response.end();
       }
    })
})

然后像这样使用它：
function getrequest(callback){
    curl('https://api.flickr.com/services/rest/?method=flickr.photosets.getList&api_key={{insert_ur_api_key}}&user_id={{insert_ur_user_id}}&format=json', (error, response, body)=> {
      if (error) {
          callback(error);
          return;
      } 
      callback(null, body);
    });
}

request.on('end', function() {
    getrequest((err, body)=>{
       if (err) {
           response.writeHead(502, 'Bad Gateway', {'Content-Type': 'text/html'});
           response.end('502: Bad Gateway');
       } else {
           response.writeHead(200, {'Content-Type': 'text/html'});
           response.write(body);
           response.end();
       }
    })
})

他补充道，我必须写得太快了。