楼上说的很(hěn )多,我补充(chōng )一下,正确的应(yīng )该叫(jiào )网(wǎng )络蜘蛛(zhū ),又称爬虫,本质是搜索(suǒ )引擎派出的一个执行抓取任(rèn )务(wù )的程(chéng )序蜘蛛池的本(běn )质是大量的网站互相(xiàng )链接(jiē ),每个(gè )站单(dān )独产生(shēng )大(dà )量(liàng )的内容吸引蜘蛛(zhū )来(lái )爬,几千(qiān )个网站互(hù )链时(shí ),可(kě )以想象(xiàng )蜘(zhī )蛛的链接
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