楼上(shàng )说的(de )很(hěn )多,我补充一(yī )下,正确的应该叫网(wǎng )络(luò )蜘蛛(zhū ),又称(chēng )爬虫,本质(zhì )是搜索引(yǐn )擎派(pài )出(chū )的一个(gè )执行(háng )抓取任(rèn )务(wù )的程序蜘蛛(zhū )池的本质(zhì )是大量的网(wǎng )站(zhàn )互相(xiàng )链(liàn )接,每个站(zhàn )单(dān )独产生大(dà )量的内容吸(xī )引蜘蛛来爬(pá ),几千个网站(zhàn )互链时(shí ),可以想象蜘蛛的链(liàn )接
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