node.js 爬取图片

/**

 *                    _ooOoo_

 *                   o8888888o

 *                   88" . "88

 *                   (| -_- |)

 *                    O\ = /O

 *                ____/`---'\____

 *              .   ' \\| |// `.

 *               / \\||| : |||// \

 *             / _||||| -:- |||||- \

 *               | | \\\ - /// | |

 *             | \_| ''\---/'' | |

 *              \ .-\__ `-` ___/-. /

 *           ___`. .' /--.--\ `. . __

 *        ."" '< `.___\_<|>_/___.' >'"".

 *       | | : `- \`.;`\ _ /`;.`/ - ` : | |

 *         \ \ `-. \_ __\ /__ _/ .-` / /

 * ======`-.____`-.___\_____/___.-`____.-'======

 *                    `=---='

 *

 * .............................................

 *          佛祖保佑             永无BUG

 *

 * Created by Ning on 2018/8/16.

 */

var http = require("http");

var fs = require("fs");

var path = require("path");

var url = "http://www.xxxxxxxx.cn/";

http.get(url,function (res) {

    var content = '';

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

        content += data;

    });

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

        //正则匹配jpg png图片

        var reg = /src="(.*?\.jpg|.*?\.png)"/img;

        var filename = "";

        //循环匹配

        while (filename = reg.exec(content)){

            getImage(url,filename[1]);

           // url = "http://hospital.dev.ftbj.net" + filename[1];

        }

    });

});

//爬取图片

function getImage(url,filename) {

    //获取图片的文件名

    var obj = path.parse(filename);

    var fn = obj.base;

    var streaml = fs.createWriteStream('./image/'+fn);

    var image = url + filename;

    http.get(image,function (res) {

        //管道的方式流入文件中

        res.pipe(streaml);

    });

}
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node.js 爬取图片

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