var http = require('http');

var cheerio = require('cheerio');

var url = 'http://www.cnblogs.com/tianxintian22/';

function filterblogs(html) {

    var $ = cheerio.load(html);

    var blogs = $('.day');

    // [{

    //     dayTitle: '',

    //    dayCont: {

    //        postId: '',

    //         postTitle: '',

    //         postCont: ''

    //    }

    // }]

    var blogDatas = [];

    blogs.each(function(item) {

        var blog = $(this);

        var dayTitle = blog.find('.dayTitle a').text();

        var blogData = {

            dayTitle: dayTitle,

            dayCont: []

        };

        var postId = blog.find('.postCon .c_b_p_desc a').attr('href').split('p/')[1].replace('.html', '');

        var postTitle = blog.find('.postTitle a').text();

        var postCont = blog.find('.postCon .c_b_p_desc').text();

        blogData.dayCont.push({

            postId: postId,

            postTitle: postTitle,

            postCont: postCont

        });

        blogDatas.push(blogData);

    })

    return blogDatas;

}

function printBlogInfo(blogDatas) {

    blogDatas.forEach(function(item) {

        var dayTitle = item.dayTitle;

        console.log(dayTitle + '\n');

        item.dayCont.forEach(function(blog){

            console.log('    【' + blog.postId + '】' + blog.postTitle +'\n');

            console.log('    ' + blog.postCont + '\n');

        });

    })

}

http.get(url, function (res) {

    var html = '';

    res.on('data', function(data) {

        html += data;

    });

    res.on('end', function() {

        var blogDatas =  filterblogs(html);

        printBlogInfo(blogDatas);

    });

}).on('error', function() {

    console.log('获取博客数据出错');

})