var jsdom = require(“jsdom”); var http = require(“http”); var fs = require(“fs”);

function catchCore(){ jsdom.env( "http://www.qiushibaike.com/hot/", [“http://code.jquery.com/jquery.js”], function (errors, window) { if(errors){ console.log(errors); } var $ = window.$; // console.log($(“body”).html()); console.log($(“img”).length);

        $("img").each(function(idx,obj){
            var src = obj.src;
            if(/pic.qiushibaike.com/.test(src)){

               http.get(src, function(res) {
                    res.setEncoding('binary');//二进制（binary）
                    var imageData ='';
                    res.on('data',function(data){//图片加载到内存变量
                        imageData += data;
                    }).on('end',function(){//加载完毕保存图片
                        var imageName = src.substr(src.length-8,8);
                        fs.writeFile('public/images/'+imageName, imageData, 'binary', function (err) {//以二进制格式保存
                            if (err) throw err;
                            console.log('file saved');
                        });
                    });

                }).on('error', function(e) {
                    console.log("Got error: " + e.message);
                });
            }
        });

    }
);

}

exports.start = catchCore;