//依赖模块  var fs = require('fs');  var request = require("request");  var cheerio = require("cheerio");  var mkdirp = require('mkdirp');  var http = require('http');  var urlparse = require('url').parse;      //目标网址  var url = 'http://me2-sex.lofter.com/tag/美女摄影?page=';      //本地存储目录  var dir = './images';      //创建目录  mkdirp(dir, function (err) {      if (err) {          console.log(err);      }  });      function sleep(milliSeconds) {      var startTime = new Date().getTime();      while (new Date().getTime() < startTime + milliSeconds);  };          //发送请求  var getFile = function (url, i, max) {      if (i > max)return;      request(url + i, function (error, response, body) {          if (!error && response.statusCode == 200) {              var $ = cheerio.load(body);              $('.img img').each(function () {                  var src = $(this).attr('src');                  getDetailFile($(this).parent().attr('href'));                  console.log('正在下载' + src);                  var name = src.match('[^=/]\\\\w*\\\\.jpg\\\\w*')[0];                  saveImg(src,dir,  name);               //   sleep(2000);              });              i++;              getFile(url,i,max);              }      });  };      var getDetailFile = function (url){      request(url, function (error, response, body) {          if (!error && response.statusCode == 200) {              var $ = cheerio.load(body);              $('.img img').each(function () {                  var src = $(this).attr('src');                  console.log('正在下载detail' + src);                  saveImg(src,dir,  Math.floor(Math.random() * 100000) + src.substr(-4, 4));                  });          }      });  }                  function saveImg(url, dir,name){      sleep(500);      http.get(url, function(res){          res.setEncoding('binary');          var data='';          res.on('data', function(chunk){              data+=chunk;          });          res.on('end', function(){              fs.writeFile(dir + "/"+name, data, 'binary', function (err) {                  if (err) throw err;                  console.log('file saved '+name);              });          });      }).on('error', function(e) {          console.log('error'+e)      });  }  var i = 1;  getFile(url, i, 100);