Nodejs获取网络数据并生成Excel表格

var fs = require('fs');
var xlsx = require('node-xlsx');

var ajax = require('./ajax.js');
start();
function start() {
 ajax.ajax({
 url: "http://yuntuapi.amap.com/datamanage/data/list",
 type: "GET",
 data: {
 tableid: "XXX",//53eacbe4e4b0693fbf5fd13b
 key: "XXX"
 },
 success: function (data) {
 var myDatas = [];
 var datas = (JSON.parse(data)).datas;
 var count = 0;
 for (var index in datas) {
 var account = datas[index];
 var colum = [];
 var names;
 if (index == 0) {
  names = [];
 }
 for (var index2 in account) {
  if (index == 0)
  names.push(index2);
  var value = account[index2];
  if (value == null) {
  value = "";
  }
  colum.push(value);
//  console.log(account);
 }
 if (index == 0) {
  myDatas.push(names);
 }
 myDatas.push(colum);

 if (index == datas.length - 1) {
  writeXls(myDatas);
 }
 }
 console.log(myDatas.length);
 }
 });
}
function writeXls(datas) {
 var buffer = xlsx.build({worksheets: [
 {"name": "Group", "data": datas}
 ]});
 fs.writeFileSync("Group.csv", buffer, 'binary');
}
function parseXls() {
 var obj = xlsx.parse('myFile.xlsx');
 console.log(obj);
}

var https = require("https");
var http = require("http");
var Url = require("url");
var querystring = require('querystring');

// 默认值
var defaultSetting = {
 // 如果返回false可以取消本次请求
 beforeSend: function (req) {
 },
 complete: function (req) {
 },
 data: '', // Object, String
 dataType: 'JSON',
 error: function () {
 },
 headers: {}, // {k:v, ...}
 statusCode: {},
 success: function (data) {
 },
 timeout: 10,
 type: 'GET', // GET, POST
 url: "www.baidu.com"
};

/**
 *
 */
function ajax(settings) {
 // ajaxlbs.js(settings)
 if (typeof settings === "object") {
 // 处理默认值继承
 // todo ...
 for (key in defaultSetting) {
 if (settings[key] == null) {
 settings[key] = defaultSetting[key];
 }
 }
 }

 var params = Url.parse(settings.url, true);
 // params 解析出来的参数如下
 // {
 // "protocol":"http:",
 // "slashes":true,
 // "host":"localhost:3000",
 // "port":"3000",
 // "hostname":"localhost",
 // "href":"http://localhost:3000/?d=1",
 // "search":"?d=1",
 // "query":{"d":"1"},
 // "pathname":"/",
 // "path":"/?d=1"
 // }

 var options = {
 host: params.hostname,
 port: params.port || 80,
 path: params.path,
 method: settings.type
 };

 if (settings.data != null) {
 options.path  = "?"
 for (var key in settings.data) {
 options.path = options.path   "&"   key   "="   settings.data[key];
 }
 console.log(options.path);
 }

 var httpUnity = http;
 if (params.protocol == "https:") {
 options.port = 443;
 var httpUnity = https;
 }

 var req = httpUnity.request(options,function (res) {
 var data = '';
 res.on('data',function (chunk) {
 data  = chunk;
 }).on('end', function () {
 if (settings.dataType === "json") {
  try {
  data = JSON.parse(data);
  } catch (e) {
  data = null;
  }
 }
 settings.success(data);
 settings.complete(req);
 });
 }).on('error', function (e) {
 settings.error(e);
 });

// if (typeof settings.beforeSend === "function") {
// if (!settings.beforeSend(req)) {
// settings.complete(req);
// req.end();
// return false;
// }
// }

 if (settings.type === "POST") {
 var dataStr = querystring.stringify(settings.data);
 req.setHeader("Content-Length", dataStr.length);
 req.write(dataStr);
 }

 req.setTimeout(settings.timeout);
 req.end();
}

exports.ajax = ajax;