楼上说(shuō )的(de )很(hěn )多(duō ),我补充一(yī )下,正确的(de )应该叫(jiào )网络蜘(zhī )蛛,又(yòu )称爬虫,本质是搜索引擎派出的一(yī )个执行(háng )抓(zhuā )取(qǔ )任务(wù )的(de )程序(xù )蜘蛛池的本(běn )质是大量的网(wǎng )站(zhàn )互相(xiàng )链接,每个(gè )站(zhàn )单独(dú )产生大(dà )量的内容(róng )吸引蜘蛛来(lái )爬,几千个网(wǎng )站(zhàn )互链(liàn )时,可以想象蜘(zhī )蛛的链接(jiē )
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