Phantomjs和Casperjs，后台网页抓取和交互

var casper = require('casper').create({
    verbose: true,
    logLevel: 'debug',
    pageSettings: {
         loadImages:  false,
         loadPlugins: true,
         userAgent: 'Mozilla/5.0 (Windows NT 6.1; rv:17.0) Gecko/20100101 Firefox/17.0'
    }
});
//phantom.outputEncoding="gbk";
casper.options.viewportSize = {width: 1680, height: 924};
casper.start('http://bulo.hujiang.com/app/login?source=nbulo&returnurl=/home/');
casper.waitForSelector("form#myform input[name='txtUsername']",
    function success() {
        this.test.assertExists("form input[name='txtUsername']");
        this.fill("form",{
            'txtUsername':'shixiaobao17',
            'txtPassword':'×××××your password*****'
        },false);
        this.click("input#btnLogin");
    },
    function fail() {
        this.test.assertExists("form input[name='txtUsername']");
});

casper.waitFor(function check() {
    return this.getCurrentUrl().indexOf("bulo.hujiang.com/home")>-1;
}, function then() {
    console.log("登录成功!!!!!!!!!!!!");
}).then(function(){
    console.log("执行登录后的其它操作!!!!!!!!!!!!");
    if(this.exists("#btn_card_do")){
        this.click("#btn_card_do");
        this.waitForSelector("#my_hb_btn",function success(){
            console.log("打卡成功！");
        },function fail(){
            console.log("打卡失败！");
        });
    }else{
        console.log("今天已经打过卡啦！");
    }

});
casper.run(function() {this.test.renderResults(true);});

相关资料：http://casperjs.readthedocs.org/en/latest/modules/casper.html