【正文】 最終實(shí)現(xiàn)的網(wǎng)絡(luò)爬蟲(chóng)應(yīng)該能根據(jù)設(shè)定的主題，從設(shè)定的 url進(jìn)行一定深度的搜索，并最。對(duì)網(wǎng)絡(luò)爬蟲(chóng)的連接網(wǎng)絡(luò)設(shè)置連接及讀取時(shí)間，避免無(wú)限制的等待。網(wǎng)絡(luò)爬蟲(chóng)要實(shí)現(xiàn)對(duì)特定主題的爬取。對(duì) url 進(jìn)行分析，去重。） 本課題的主要目的是設(shè)計(jì)面向主題的網(wǎng)絡(luò)爬蟲(chóng)程序，同時(shí)需要滿足的是具有一定的性能，要考慮到網(wǎng)絡(luò)爬蟲(chóng)的各種需求。 t his year J anuaryJ une, vehicles m anagement section and l icense ar chives m anagem ent sect ion t ot al accept ed t he m ot or vehicle r egist r ation business 42, 543 car t im es, which r egist er ed r egist r at ion 6, 905 car t im es, and t r ansf er r egist ration 3, 592 car t im es, and change r egistr ation 1033 car t im es, and m or tgage r egist ration 696 car t im es, and cancelat ion r egist r at ion 187 car t im es, and int o business 980 car t im es, and Ar chives cor ect ions 81 pieces t im es, and issued t est qualif ied logo 25, 429 car t im es, and ot her vehicles business 3, 640 car t im es。 I I is est ablished m ot or vehicle t est r egulat ory plat f or m, achieved m ot or vehicle t est f ul pr ocess video, and dat a r em ot e r egulat or y。 t o im pr ove the day to day oper ation and m aint enance operat ion r ecor d of pr om oting causes and t r ansf er syst em。 二、 參考文獻(xiàn) [1]Winter．中文搜索引擎技術(shù)解密：網(wǎng)絡(luò)蜘蛛 [M]．北京：人民郵電出版社，2021 年． [2]Sergey 等． The Anatomy of a LargeScale Hypertextual Web Search Engine [M]．北京：清華大學(xué)出版社， 1998 年． [3]Wisenut． WiseNut Search Engine white paper [M]．北京：中國(guó)電力出版社， 2021 年． [4]Gary Stevens． TCPIP協(xié)議詳解卷 3： TCP事務(wù)協(xié)議，HTTP， NNTP 和 UNIX 域協(xié)議 [M]．北京：機(jī)械工業(yè)出版社， 2021 年 1 月 . [5]羅剛 王振東 ． 自己動(dòng)手寫(xiě)網(wǎng)絡(luò)爬蟲(chóng) [M]．北京：清華大學(xué)出版社， 2021 年 10月 . [6]李曉明 ， 閆宏飛 ， 王繼民 ． 搜索引擎：原理、技術(shù)與系統(tǒng) —— 華夏英才基金學(xué)術(shù)文庫(kù) [M]．北京： 科學(xué)出版社 ， 2021 年 04 月 . evaluat ion of scient if ic developm ent . Nat ur e securit y t ype nat ur e securit y is t o m aint enance people of healt h value f or t ar get , t hr ough st r engt hening securit y based m anagem ent, and r isk m anagem ent, and equipm ent m anagem ent and t echnol gy super vision, ensur e pr oduction in t he people, and r eal, and system, and syst em , elem ent s ecurit y r eliable, and har m ony unif ied, f ul cont r ol var ious against f act or s, achieved t hought no slack, and m anagem ent no em pt y docum ent, and equipm ent no hidden, and syst em no blocked, and unit zer o non st opped. Qualit y and ef f iciency qualit y benef it is t o adher e t o t he ent er pr ise survival, pr of it and developm ent business t r ut h, adher e t o t he all act ivit y is econom ic activit y, all cost s can be cont r oled, m oney should not be wast ed m anagement philosophy, m anagement analysis, t o im pr ove m anagement qualit y, im pr ove cost cont r ol capacit y and m ar ket pet it iveness. I nnovat ion of science and t echnol gyscience and t echnol gy innovat ion is t o play t he r ole of science and t echnol gy as t he prim ar y pr oductive f or ce, active use of new t echnol gies, new m at er ials, new pr ocesses, new equipm ent , incr ease invest m ent in science and t echnol gy, st r engt hening scient if ic and t echnol gical t r aining, speeding up t r ansf orm ing scientif ic and t echnological achievement s, f or ming a num ber of pr opr iet ar y t echnology, enhancing cor e pet it iveness. Resour ce savingt her esour ces saving ent er prise was t o r educe coal consum pt ion, wat er consum pt ion, electr icit y at t he cor e, enhance t he oper ation of lean m anagem ent o r ealize low consum ption, high ef f iciency, r educe pr oduct ion costs. Second is t o st r engthen t he business, f inancial, m aterial, inf or m at ion and t he opt imizat ion of or ganizat ion and m anagem ent, saving t he int er nal t r ans action cost s. Har m onious developm ent of har m onious developm ent is t o const r uct a f or eign envir onm ent f or developm ent . XI NG r ef er s t o t he int ernal securit y f ir m and int er nal m anagem ent of t he int er nal m anagement m easur es ar e ef f ective, harm onious. For eign cur ency m eans Ent er prise coor dinat ing developm ent of hom eopat hy, well, get along wit h t he neighbor s bet t er . ( B) XX 2021 f ive ent er pr ises building int r insic saf et y power pany goals ar e: unplanned out age 0 t im es. Class of disor der s 0, 0 is equivalent f or ced out age r at e. No per sonal inj ur y accident, m at erial and equipm ent accidents do not occur , no f ir e, no envir onment al polut ion accident . Enterprise integrated to achieve zero cases of violation, zero accidents, zero. Quality goal is: when generating capacity ≥ 7. 5 bil lion kilowatt, sales of over 7. 11 bil ion kWh, total profits of ≥ 306. 6 milon Yuan, . . . BFS++、 PI 、 MIS、 SCM I nf or mation syst em s inf r ast ruct ur e, f uly int egr ated inf orm ation syst em t o r ealize inf or m at ion r esources sharing。所以需要一個(gè)能基于主題搜索的滿足特定需求的網(wǎng)絡(luò)爬蟲(chóng)。但是，這些通用性搜索引擎也存在著一定的局限性。） 互聯(lián)網(wǎng)是一個(gè)龐大的非結(jié)構(gòu)化的數(shù)據(jù)庫(kù)，將數(shù)據(jù)有效的檢索并組織呈現(xiàn)出來(lái)有著巨大的應(yīng)用前景。 t his year J anuary June, vehicles m anagement sect ion and license ar chives m anagement sect ion t otal accept ed t he m otor vehicle r egist r at ion business 42,543 car t im es, which r egister ed r egist rat ion 6,905 car t im es, and t r ansfer r egist r at ion 3, 592 car t im es, and change r egist rat ion 1033 car t im es, and mor t gage r egist rat ion 696 car t im es, and cancelat ion r egist r at ion 187 car tim es, and int o business 980 car t im es, and Ar chives cor ect ions 81 pieces t imes, and issued t est qualif ied logo 25, 429 car t im es, and ot her vehicles business 3, 640 car t im es。 I I is est ablished m ot or vehicle t est r egulat ory plat f orm , achieved mot or vehicle t est f ul pr ocess video, and dat a r em ote r egulator y。 t o im pr ove t he day to day oper ation and m aint enance operat ion r ecor d of pr om oting causes and t r ansf er syst em。 supervision Sur vey Section r elies on m ot or vehicle det ection r em ot e issued t est qualif ied logo sof t war e plat f orm super vision m ot or vehicle t est, an