{"id":470946,"date":"2024-07-09T05:47:13","date_gmt":"2024-07-09T05:47:13","guid":{"rendered":"https:\/\/proxycompass.com\/?p=470946"},"modified":"2024-07-09T05:47:14","modified_gmt":"2024-07-09T05:47:14","slug":"what-is-web-scraping-and-how-it-works","status":"publish","type":"post","link":"https:\/\/proxycompass.com\/vi\/what-is-web-scraping-and-how-it-works\/","title":{"rendered":"Qu\u00e9t web l\u00e0 g\u00ec v\u00e0 n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?"},"content":{"rendered":"

B\u1ea1n b\u1ed1i r\u1ed1i v\u00e0 mu\u1ed1n bi\u1ebft web Scraping l\u00e0 g\u00ec v\u00e0 n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n\n\n\n

Ch\u00e0, b\u1ea1n \u0111\u00e3 \u0111\u1ebfn \u0111\u00fang n\u01a1i v\u00ec ch\u00fang t\u00f4i s\u1eafp \u0111\u1eb7t m\u1ecdi th\u1ee9 cho b\u1ea1n.<\/p>\n\n\n\n

Tr\u01b0\u1edbc khi ch\u00fang ta \u0111i s\u00e2u v\u00e0o, t\u00f4i c\u00f3 th\u1ec3 cho b\u1ea1n bi\u1ebft phi\u00ean b\u1ea3n ng\u1eafn:<\/p>\n\n\n\n

Qu\u00e9t web l\u00e0 qu\u00e1 tr\u00ecnh tr\u00edch xu\u1ea5t d\u1eef li\u1ec7u c\u00f3 s\u1eb5n c\u00f4ng khai t\u1eeb m\u1ed9t trang web.<\/p>\n\n\n\n

H\u00e3y tham gia c\u00f9ng ch\u00fang t\u00f4i \u0111\u1ec3 t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 c\u00e1c chi ti\u1ebft c\u1ee5 th\u1ec3, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00e1c th\u01b0 vi\u1ec7n ph\u1ed5 bi\u1ebfn hi\u1ec7n c\u00f3.<\/p>\n\n\n\n

Qu\u00e9t web l\u00e0 g\u00ec?<\/h2>\n\n\n\n

V\u1ec1 c\u01a1 b\u1ea3n, qu\u00e9t web l\u00e0 m\u1ed9t quy tr\u00ecnh cho ph\u00e9p b\u1ea1n tr\u00edch xu\u1ea5t m\u1ed9t l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u t\u1eeb m\u1ed9t trang web. \u0110\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y, c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng m\u1ed9t \u201cc\u00f4ng c\u1ee5 qu\u00e9t web\u201d nh\u01b0 ParseHub ho\u1eb7c n\u1ebfu b\u1ea1n bi\u1ebft c\u00e1ch vi\u1ebft m\u00e3, h\u00e3y s\u1eed d\u1ee5ng m\u1ed9t trong nhi\u1ec1u th\u01b0 vi\u1ec7n ngu\u1ed3n m\u1edf hi\u1ec7n c\u00f3.<\/p>\n\n\n\n

Sau m\u1ed9t th\u1eddi gian c\u00e0i \u0111\u1eb7t v\u00e0 tinh ch\u1ec9nh n\u00f3 (d\u00f9ng th\u01b0 vi\u1ec7n Python ho\u1eb7c c\u00e1c c\u00f4ng c\u1ee5 kh\u00f4ng c\u1ea7n m\u00e3 n\u1ebfu b\u1ea1n l\u00e0 ng\u01b0\u1eddi m\u1edbi \u1edf \u0111\u00e2y), m\u00f3n \u0111\u1ed3 ch\u01a1i m\u1edbi c\u1ee7a b\u1ea1n s\u1ebd b\u1eaft \u0111\u1ea7u kh\u00e1m ph\u00e1 trang web \u0111\u1ec3 t\u00ecm d\u1eef li\u1ec7u mong mu\u1ed1n v\u00e0 tr\u00edch xu\u1ea5t n\u00f3. Sau \u0111\u00f3, n\u00f3 s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i sang m\u1ed9t \u0111\u1ecbnh d\u1ea1ng c\u1ee5 th\u1ec3 nh\u01b0 CSV, do \u0111\u00f3 b\u1ea1n c\u00f3 th\u1ec3 truy c\u1eadp, ki\u1ec3m tra v\u00e0 qu\u1ea3n l\u00fd m\u1ecdi th\u1ee9.<\/p>\n\n\n\n

V\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 c\u00f4ng c\u1ee5 qu\u00e9t web l\u1ea5y \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u c\u1ee5 th\u1ec3 c\u1ee7a m\u1ed9t s\u1ea3n ph\u1ea9m ho\u1eb7c m\u1ed9t \u0111\u1ecba ch\u1ec9 li\u00ean h\u1ec7?<\/p>\n\n\n\n

C\u00f3 th\u1ec3 b\u1ea1n \u0111ang th\u1eafc m\u1eafc v\u00e0o th\u1eddi \u0111i\u1ec3m n\u00e0y\u2026<\/p>\n\n\n\n

Ch\u00e0, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c n\u1ebfu b\u1ea1n c\u00f3 m\u1ed9t ch\u00fat ki\u1ebfn th\u1ee9c v\u1ec1 html ho\u1eb7c css. B\u1ea1n ch\u1ec9 c\u1ea7n nh\u1ea5p chu\u1ed9t ph\u1ea3i v\u00e0o trang b\u1ea1n mu\u1ed1n c\u1ea1o, ch\u1ecdn \u201cKi\u1ec3m tra ph\u1ea7n t\u1eed\u201d v\u00e0 x\u00e1c \u0111\u1ecbnh ID ho\u1eb7c L\u1edbp \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n\n\n\n

M\u1ed9t c\u00e1ch kh\u00e1c l\u00e0 s\u1eed d\u1ee5ng XPath ho\u1eb7c bi\u1ec3u th\u1ee9c ch\u00ednh quy.<\/p>\n\n\n\n

Kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t l\u1eadp tr\u00ecnh vi\u00ean? \u0110\u1eebng lo l\u1eafng!<\/p>\n\n\n\n

Nhi\u1ec1u c\u00f4ng c\u1ee5 qu\u00e9t web cung c\u1ea5p giao di\u1ec7n th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng, n\u01a1i b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn c\u00e1c th\u00e0nh ph\u1ea7n b\u1ea1n mu\u1ed1n c\u1ea1o v\u00e0 ch\u1ec9 \u0111\u1ecbnh d\u1eef li\u1ec7u b\u1ea1n mu\u1ed1n tr\u00edch xu\u1ea5t. M\u1ed9t s\u1ed1 trong s\u1ed1 ch\u00fang th\u1eadm ch\u00ed c\u00f2n c\u00f3 c\u00e1c t\u00ednh n\u0103ng t\u00edch h\u1ee3p t\u1ef1 \u0111\u1ed9ng h\u00f3a qu\u00e1 tr\u00ecnh x\u00e1c \u0111\u1ecbnh m\u1ecdi th\u1ee9 cho b\u1ea1n.<\/p>\n\n\n\n

H\u00e3y ti\u1ebfp t\u1ee5c \u0111\u1ecdc, trong ph\u1ea7n ti\u1ebfp theo ch\u00fang ta s\u1ebd n\u00f3i v\u1ec1 \u0111i\u1ec1u n\u00e0y chi ti\u1ebft h\u01a1n.<\/p>\n\n\n\n

Qu\u00e9t web ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n\n\n\n

Gi\u1ea3 s\u1eed b\u1ea1n ph\u1ea3i thu th\u1eadp d\u1eef li\u1ec7u t\u1eeb m\u1ed9t trang web, nh\u01b0ng vi\u1ec7c g\u00f5 t\u1eebng c\u00e1i m\u1ed9t s\u1ebd ti\u00eau t\u1ed1n r\u1ea5t nhi\u1ec1u th\u1eddi gian. Ch\u00e0, \u0111\u00f3 l\u00e0 l\u00fac vi\u1ec7c qu\u00e9t web xu\u1ea5t hi\u1ec7n.<\/p>\n\n\n\n

N\u00f3 gi\u1ed1ng nh\u01b0 c\u00f3 m\u1ed9t con robot nh\u1ecf c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng l\u1ea5y th\u00f4ng tin c\u1ee5 th\u1ec3 m\u00e0 b\u1ea1n mu\u1ed1n t\u1eeb c\u00e1c trang web. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng ph\u00e2n t\u00edch v\u1ec1 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a quy tr\u00ecnh n\u00e0y:<\/p>\n\n\n\n

    \n
  1. G\u1eedi y\u00eau c\u1ea7u HTTP \u0111\u1ebfn trang web m\u1ee5c ti\u00eau:<\/strong> \u0110\u00e2y l\u00e0 n\u1ec1n t\u1ea3ng m\u00e0 m\u1ecdi th\u1ee9 ph\u00e1t tri\u1ec3n t\u1eeb \u0111\u00f3. Y\u00eau c\u1ea7u HTTP cho ph\u00e9p tr\u00ecnh qu\u00e9t web g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 n\u01a1i l\u01b0u tr\u1eef trang web \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp. \u0110i\u1ec1u n\u00e0y x\u1ea3y ra khi m\u1ed9t ng\u01b0\u1eddi \u0111ang g\u00f5 URL ho\u1eb7c nh\u1ea5p v\u00e0o li\u00ean k\u1ebft. Y\u00eau c\u1ea7u bao g\u1ed3m c\u00e1c chi ti\u1ebft v\u1ec1 thi\u1ebft b\u1ecb v\u00e0 tr\u00ecnh duy\u1ec7t b\u1ea1n \u0111ang s\u1eed d\u1ee5ng.
    <\/li>\n\n\n\n
  2. Ph\u00e2n t\u00edch m\u00e3 ngu\u1ed3n HTML: <\/strong>M\u00e1y ch\u1ee7 g\u1eedi l\u1ea1i m\u00e3 HTML c\u1ee7a trang web bao g\u1ed3m c\u1ea5u tr\u00fac c\u1ee7a trang v\u00e0 n\u1ed9i dung c\u1ee7a trang bao g\u1ed3m v\u0103n b\u1ea3n, h\u00ecnh \u1ea3nh, li\u00ean k\u1ebft, v.v. Tr\u00ecnh qu\u00e9t web x\u1eed l\u00fd vi\u1ec7c n\u00e0y b\u1eb1ng c\u00e1c th\u01b0 vi\u1ec7n nh\u01b0 BeautifulSoup n\u1ebfu s\u1eed d\u1ee5ng Python ho\u1eb7c DOMParser n\u1ebfu s\u1eed d\u1ee5ng JavaScript. \u0110i\u1ec1u n\u00e0y gi\u00fap x\u00e1c \u0111\u1ecbnh c\u00e1c ph\u1ea7n t\u1eed c\u1ea7n thi\u1ebft c\u00f3 ch\u1ee9a c\u00e1c gi\u00e1 tr\u1ecb quan t\u00e2m.
    <\/li>\n\n\n\n
  3. Khai th\u00e1c d\u1eef li\u1ec7u:<\/strong> Sau khi x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e1c ph\u1ea7n t\u1eed, tr\u00ecnh qu\u00e9t web s\u1ebd thu th\u1eadp d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft. \u0110i\u1ec1u n\u00e0y li\u00ean quan \u0111\u1ebfn vi\u1ec7c di chuy\u1ec3n qua c\u1ea5u tr\u00fac HTML, ch\u1ecdn c\u00e1c th\u1ebb ho\u1eb7c thu\u1ed9c t\u00ednh nh\u1ea5t \u0111\u1ecbnh, sau \u0111\u00f3 l\u1ea5y v\u0103n b\u1ea3n ho\u1eb7c d\u1eef li\u1ec7u kh\u00e1c t\u1eeb c\u00e1c th\u1ebb\/thu\u1ed9c t\u00ednh \u0111\u00f3.
    <\/li>\n\n\n\n
  4. Chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u: <\/strong>D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c tr\u00edch xu\u1ea5t c\u00f3 th\u1ec3 \u1edf m\u1ed9t s\u1ed1 \u0111\u1ecbnh d\u1ea1ng kh\u00f4ng \u0111\u01b0\u1ee3c \u01b0u ti\u00ean. D\u1eef li\u1ec7u web n\u00e0y \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch v\u00e0 chu\u1ea9n h\u00f3a, sau \u0111\u00f3 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i sang \u0111\u1ecbnh d\u1ea1ng nh\u01b0 t\u1ec7p CSV, \u0111\u1ed1i t\u01b0\u1ee3ng JSON ho\u1eb7c b\u1ea3n ghi trong c\u01a1 s\u1edf d\u1eef li\u1ec7u. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 c\u00f3 ngh\u0129a l\u00e0 x\u00f3a m\u1ed9t s\u1ed1 k\u00fd t\u1ef1 kh\u00f4ng c\u1ea7n thi\u1ebft, thay \u0111\u1ed5i ki\u1ec3u d\u1eef li\u1ec7u ho\u1eb7c \u0111\u01b0a n\u00f3 v\u00e0o d\u1ea1ng b\u1ea3ng.
    <\/li>\n\n\n\n
  5. L\u01b0u tr\u1eef d\u1eef li\u1ec7u:<\/strong> D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch v\u00e0 c\u1ea5u tr\u00fac \u0111\u1ec3 ph\u00e2n t\u00edch ho\u1eb7c s\u1eed d\u1ee5ng trong t\u01b0\u01a1ng lai tr\u01b0\u1edbc khi \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1eb1ng nhi\u1ec1u c\u00e1ch, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u01b0u n\u00f3 v\u00e0o m\u1ed9t t\u1ec7p, v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u ho\u1eb7c g\u1eedi n\u00f3 t\u1edbi API.
    <\/li>\n\n\n\n
  6. L\u1eb7p l\u1ea1i cho nhi\u1ec1u trang: <\/strong>N\u1ebfu b\u1ea1n y\u00eau c\u1ea7u c\u00f4ng c\u1ee5 thu th\u1eadp d\u1eef li\u1ec7u t\u1eeb nhi\u1ec1u trang, c\u00f4ng c\u1ee5 thu th\u1eadp d\u1eef li\u1ec7u s\u1ebd l\u1eb7p l\u1ea1i c\u00e1c b\u01b0\u1edbc t\u1eeb 1-5 cho m\u1ed7i trang, \u0111i\u1ec1u h\u01b0\u1edbng qua c\u00e1c li\u00ean k\u1ebft ho\u1eb7c s\u1eed d\u1ee5ng ph\u00e2n trang. M\u1ed9t s\u1ed1 trong s\u1ed1 ch\u00fang (kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3!) th\u1eadm ch\u00ed c\u00f3 th\u1ec3 x\u1eed l\u00fd n\u1ed9i dung \u0111\u1ed9ng ho\u1eb7c c\u00e1c trang \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb b\u1eb1ng JavaScript.
    <\/li>\n\n\n\n
  7. X\u1eed l\u00fd h\u1eadu k\u1ef3 (t\u00f9y ch\u1ecdn):<\/strong> Khi ho\u00e0n t\u1ea5t, b\u1ea1n c\u00f3 th\u1ec3 c\u1ea7n th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 thao t\u00e1c l\u1ecdc, l\u00e0m s\u1ea1ch ho\u1eb7c lo\u1ea1i b\u1ecf tr\u00f9ng l\u1eb7p \u0111\u1ec3 c\u00f3 th\u1ec3 r\u00fat ra nh\u1eefng hi\u1ec3u bi\u1ebft s\u00e2u s\u1eafc t\u1eeb th\u00f4ng tin \u0111\u01b0\u1ee3c tr\u00edch xu\u1ea5t.<\/li>\n<\/ol>\n\n\n\n

    C\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a vi\u1ec7c qu\u00e9t web<\/h2>\n\n\n\n

    Gi\u00e1m s\u00e1t gi\u00e1 v\u00e0 ph\u00e2n t\u00edch \u0111\u1ed1i th\u1ee7 c\u1ea1nh tranh cho th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed<\/h3>\n\n\n\n

    N\u1ebfu b\u1ea1n c\u00f3 m\u1ed9t doanh nghi\u1ec7p th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, vi\u1ec7c qu\u00e9t web c\u00f3 th\u1ec3 c\u00f3 l\u1ee3i cho b\u1ea1n trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y.<\/p>\n\n\n\n

    \u0110\u00fang r\u1ed3i.<\/p>\n\n\n\n

    V\u1edbi s\u1ef1 tr\u1ee3 gi\u00fap c\u1ee7a c\u00f4ng c\u1ee5 n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 theo d\u00f5i gi\u00e1 c\u1ea3 li\u00ean t\u1ee5c v\u00e0 theo d\u00f5i t\u00ecnh tr\u1ea1ng s\u1eb5n c\u00f3 c\u1ee7a s\u1ea3n ph\u1ea9m c\u0169ng nh\u01b0 c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh khuy\u1ebfn m\u00e3i do \u0111\u1ed1i th\u1ee7 c\u1ea1nh tranh cung c\u1ea5p. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 t\u1eadn d\u1ee5ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c tr\u00edch xu\u1ea5t b\u1eb1ng t\u00ednh n\u0103ng qu\u00e9t web \u0111\u1ec3 theo d\u00f5i xu h\u01b0\u1edbng v\u00e0 kh\u00e1m ph\u00e1 c\u00e1c c\u01a1 h\u1ed9i th\u1ecb tr\u01b0\u1eddng m\u1edbi.<\/p>\n\n\n\n

    T\u00ecm ki\u1ebfm kh\u00e1ch h\u00e0ng ti\u1ec1m n\u0103ng v\u00e0 th\u00f4ng tin b\u00e1n h\u00e0ng<\/h3>\n\n\n\n

    B\u1ea1n \u0111ang mu\u1ed1n x\u00e2y d\u1ef1ng m\u1ed9t danh s\u00e1ch kh\u00e1ch h\u00e0ng ti\u1ec1m n\u0103ng nh\u01b0ng l\u1ea1i th\u1edf d\u00e0i khi ngh\u0129 \u0111\u1ebfn th\u1eddi gian b\u1ea1n s\u1ebd ph\u1ea3i th\u1ef1c hi\u1ec7n nhi\u1ec7m v\u1ee5 n\u00e0y? B\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ec3 vi\u1ec7c qu\u00e9t web th\u1ef1c hi\u1ec7n vi\u1ec7c n\u00e0y cho b\u1ea1n m\u1ed9t c\u00e1ch nhanh ch\u00f3ng.<\/p>\n\n\n\n

    B\u1ea1n ch\u1ec9 c\u1ea7n l\u1eadp tr\u00ecnh c\u00f4ng c\u1ee5 n\u00e0y \u0111\u1ec3 qu\u00e9t nhi\u1ec1u trang web v\u00e0 tr\u00edch xu\u1ea5t t\u1ea5t c\u1ea3 d\u1eef li\u1ec7u m\u00e0 danh s\u00e1ch kh\u00e1ch h\u00e0ng c\u1ee7a b\u1ea1n quan t\u00e2m nh\u01b0 th\u00f4ng tin li\u00ean h\u1ec7 v\u00e0 chi ti\u1ebft c\u00f4ng ty. V\u00ec v\u1eady, v\u1edbi t\u00ednh n\u0103ng qu\u00e9t web, b\u1ea1n c\u00f3 th\u1ec3 nh\u1eadn \u0111\u01b0\u1ee3c m\u1ed9t l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u \u0111\u1ec3 ph\u00e2n t\u00edch, x\u00e1c \u0111\u1ecbnh r\u00f5 h\u01a1n m\u1ee5c ti\u00eau b\u00e1n h\u00e0ng c\u1ee7a m\u00ecnh v\u00e0 c\u00f3 \u0111\u01b0\u1ee3c nh\u1eefng kh\u00e1ch h\u00e0ng ti\u1ec1m n\u0103ng m\u00e0 b\u1ea1n v\u00f4 c\u00f9ng mong mu\u1ed1n.<\/p>\n\n\n\n

    \u0110\u0103ng tin b\u1ea5t \u0111\u1ed9ng s\u1ea3n v\u00e0 nghi\u00ean c\u1ee9u th\u1ecb tr\u01b0\u1eddng<\/h3>\n\n\n\n

    B\u1ea5t \u0111\u1ed9ng s\u1ea3n l\u00e0 m\u1ed9t k\u1ecbch b\u1ea3n kh\u00e1c trong \u0111\u00f3 l\u1ee3i \u00edch c\u1ee7a vi\u1ec7c t\u00ecm ki\u1ebfm tr\u00ean web \u0111\u01b0\u1ee3c t\u1eadn d\u1ee5ng. V\u1edbi c\u00f4ng c\u1ee5 n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 kh\u00e1m ph\u00e1 r\u1ea5t nhi\u1ec1u trang web li\u00ean quan \u0111\u1ebfn b\u1ea5t \u0111\u1ed9ng s\u1ea3n \u0111\u1ec3 t\u1ea1o danh s\u00e1ch t\u00e0i s\u1ea3n.<\/p>\n\n\n\n

    D\u1eef li\u1ec7u n\u00e0y sau \u0111\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 theo d\u00f5i xu h\u01b0\u1edbng th\u1ecb tr\u01b0\u1eddng (nghi\u00ean c\u1ee9u s\u1edf th\u00edch c\u1ee7a ng\u01b0\u1eddi mua) v\u00e0 nh\u1eadn ra t\u00e0i s\u1ea3n n\u00e0o b\u1ecb \u0111\u1ecbnh gi\u00e1 th\u1ea5p. Ph\u00e2n t\u00edch d\u1eef li\u1ec7u n\u00e0y c\u0169ng c\u00f3 th\u1ec3 mang t\u00ednh quy\u1ebft \u0111\u1ecbnh trong c\u00e1c quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0 v\u00e0 ph\u00e1t tri\u1ec3n trong ng\u00e0nh.<\/p>\n\n\n\n

    Ph\u00e2n t\u00edch t\u00ecnh c\u1ea3m truy\u1ec1n th\u00f4ng x\u00e3 h\u1ed9i<\/h3>\n\n\n\n

    N\u1ebfu b\u1ea1n \u0111ang mu\u1ed1n t\u00ecm hi\u1ec3u t\u00ecnh c\u1ea3m c\u1ee7a ng\u01b0\u1eddi ti\u00eau d\u00f9ng \u0111\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 th\u01b0\u01a1ng hi\u1ec7u, s\u1ea3n ph\u1ea9m nh\u1ea5t \u0111\u1ecbnh ho\u1eb7c ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 xem xu h\u01b0\u1edbng trong m\u1ed9t l\u0129nh v\u1ef1c c\u1ee5 th\u1ec3 trong m\u1ea1ng x\u00e3 h\u1ed9i l\u00e0 g\u00ec, c\u00e1ch t\u1ed1t nh\u1ea5t \u0111\u1ec3 th\u1ef1c hi\u1ec7n t\u1ea5t c\u1ea3 \u0111i\u1ec1u n\u00e0y l\u00e0 t\u00ecm ki\u1ebfm tr\u00ean web.<\/p>\n\n\n\n

    \u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y, h\u00e3y s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 thu th\u1eadp d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n \u0111\u1ec3 thu th\u1eadp c\u00e1c b\u00e0i \u0111\u0103ng, nh\u1eadn x\u00e9t v\u00e0 \u0111\u00e1nh gi\u00e1. D\u1eef li\u1ec7u tr\u00edch xu\u1ea5t t\u1eeb m\u1ea1ng x\u00e3 h\u1ed9i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng v\u1edbi NLP ho\u1eb7c AI \u0111\u1ec3 chu\u1ea9n b\u1ecb chi\u1ebfn l\u01b0\u1ee3c ti\u1ebfp th\u1ecb v\u00e0 ki\u1ec3m tra danh ti\u1ebfng c\u1ee7a th\u01b0\u01a1ng hi\u1ec7u.<\/p>\n\n\n\n

    Nghi\u00ean c\u1ee9u h\u1ecdc thu\u1eadt v\u00e0 khoa h\u1ecdc<\/h3>\n\n\n\n

    Kh\u00f4ng c\u00f2n nghi ng\u1edd g\u00ec n\u1eefa, kinh t\u1ebf, x\u00e3 h\u1ed9i h\u1ecdc v\u00e0 khoa h\u1ecdc m\u00e1y t\u00ednh l\u00e0 nh\u1eefng l\u0129nh v\u1ef1c \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i nhi\u1ec1u nh\u1ea5t t\u1eeb vi\u1ec7c qu\u00e9t web.<\/p>\n\n\n\n

    V\u1edbi t\u01b0 c\u00e1ch l\u00e0 nh\u00e0 nghi\u00ean c\u1ee9u trong b\u1ea5t k\u1ef3 l\u0129nh v\u1ef1c n\u00e0o trong s\u1ed1 n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng d\u1eef li\u1ec7u thu \u0111\u01b0\u1ee3c b\u1eb1ng c\u00f4ng c\u1ee5 n\u00e0y \u0111\u1ec3 nghi\u00ean c\u1ee9u ch\u00fang ho\u1eb7c th\u1ef1c hi\u1ec7n \u0111\u00e1nh gi\u00e1 th\u01b0 m\u1ee5c. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 t\u1ea1o c\u00e1c b\u1ed9 d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn \u0111\u1ec3 t\u1ea1o c\u00e1c m\u00f4 h\u00ecnh v\u00e0 d\u1ef1 \u00e1n th\u1ed1ng k\u00ea t\u1eadp trung v\u00e0o h\u1ecdc m\u00e1y.<\/p>\n\n\n\n

    C\u00e1c c\u00f4ng c\u1ee5 v\u00e0 th\u01b0 vi\u1ec7n qu\u00e9t web h\u00e0ng \u0111\u1ea7u<\/h2>\n\n\n\n

    Python<\/h3>\n\n\n\n

    N\u1ebfu b\u1ea1n quy\u1ebft \u0111\u1ecbnh th\u1ef1c hi\u1ec7n c\u00e1c d\u1ef1 \u00e1n qu\u00e9t web, b\u1ea1n kh\u00f4ng th\u1ec3 sai l\u1ea7m v\u1edbi Python!<\/p>\n\n\n\n

      \n
    1. S\u00fap \u0111\u1eb9p:<\/strong> th\u01b0 vi\u1ec7n n\u00e0y ch\u1ecbu tr\u00e1ch nhi\u1ec7m ph\u00e2n t\u00edch c\u00fa ph\u00e1p c\u00e1c t\u00e0i li\u1ec7u HTML v\u00e0 XML, \u0111\u1ed3ng th\u1eddi t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c tr\u00ecnh ph\u00e2n t\u00edch c\u00fa ph\u00e1p kh\u00e1c nhau.<\/li>\n\n\n\n
    2. v\u1ee5n v\u1eb7t:<\/strong> m\u1ed9t khung qu\u00e9t web m\u1ea1nh m\u1ebd v\u00e0 nhanh ch\u00f3ng. \u0110\u1ec3 tr\u00edch xu\u1ea5t d\u1eef li\u1ec7u, n\u00f3 c\u00f3 API c\u1ea5p cao.<\/li>\n\n\n\n
    3. Selen: <\/strong>c\u00f4ng c\u1ee5 n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd c\u00e1c trang web c\u00f3 t\u1ea3i JavaScript \u0111\u00e1ng k\u1ec3 trong m\u00e3 ngu\u1ed3n c\u1ee7a ch\u00fang. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u1ea1o n\u1ed9i dung \u0111\u1ed9ng.<\/li>\n\n\n\n
    4. Y\u00eau c\u1ea7u:<\/strong> th\u00f4ng qua th\u01b0 vi\u1ec7n n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c y\u00eau c\u1ea7u HTTP trong m\u1ed9t giao di\u1ec7n \u0111\u01a1n gi\u1ea3n v\u00e0 trang nh\u00e3.<\/li>\n\n\n\n
    5. Urllib:<\/strong> M\u1edf v\u00e0 \u0111\u1ecdc URL. Gi\u1ed1ng nh\u01b0 Y\u00eau c\u1ea7u, n\u00f3 c\u00f3 giao di\u1ec7n nh\u01b0ng \u1edf c\u1ea5p \u0111\u1ed9 th\u1ea5p h\u01a1n n\u00ean b\u1ea1n ch\u1ec9 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng n\u00f3 cho c\u00e1c t\u00e1c v\u1ee5 qu\u00e9t web c\u01a1 b\u1ea3n.<\/li>\n<\/ol>\n\n\n\n

      JavaScript<\/h3>\n\n\n\n

      JavaScript l\u00e0 \u1ee9ng c\u1eed vi\u00ean th\u1ee9 hai r\u1ea5t t\u1ed1t cho vi\u1ec7c qu\u00e9t web, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi Playwright.<\/p>\n\n\n\n

        \n
      1. Ng\u01b0\u1eddi m\u00faa r\u1ed1i: <\/strong>nh\u1edd th\u01b0 vi\u1ec7n Node.js \u0111\u01b0\u1ee3c trang b\u1ecb API c\u1ea5p cao n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 c\u00f3 c\u01a1 h\u1ed9i qu\u1ea3n l\u00fd phi\u00ean b\u1ea3n kh\u00f4ng c\u00f3 giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng c\u1ee7a tr\u00ecnh duy\u1ec7t Chrome ho\u1eb7c Chrome \u0111\u1ec3 qu\u00e9t web.
        <\/li>\n\n\n\n
      2. C\u1ed5 v\u0169: <\/strong>t\u01b0\u01a1ng t\u1ef1 nh\u01b0 jQuery, th\u01b0 vi\u1ec7n n\u00e0y cho ph\u00e9p b\u1ea1n ph\u00e2n t\u00edch c\u00fa ph\u00e1p v\u00e0 thao t\u00e1c HTML. \u0110\u1ec3 l\u00e0m nh\u01b0 v\u1eady, n\u00f3 c\u00f3 m\u1ed9t c\u00fa ph\u00e1p d\u1ec5 l\u00e0m quen.
        <\/li>\n\n\n\n
      3. Tr\u1ee5c:<\/strong> th\u01b0 vi\u1ec7n ph\u1ed5 bi\u1ebfn n\u00e0y cung c\u1ea5p cho b\u1ea1n m\u1ed9t API \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c y\u00eau c\u1ea7u HTTP. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng thay th\u1ebf cho m\u00f4-\u0111un HTTP \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p trong Node.js.
        <\/li>\n\n\n\n
      4. Nh\u00e0 vi\u1ebft k\u1ecbch:<\/strong> T\u01b0\u01a1ng t\u1ef1 nh\u01b0 Puppeteer, \u0111\u00e2y l\u00e0 th\u01b0 vi\u1ec7n Node.js nh\u01b0ng m\u1edbi h\u01a1n v\u00e0 t\u1ed1t h\u01a1n. N\u00f3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi Microsoft v\u00e0 kh\u00f4ng gi\u1ed1ng nh\u01b0 Windows 11 hay Edge Browser, n\u00f3 kh\u00f4ng t\u1ec7! Cung c\u1ea5p c\u00e1c t\u00ednh n\u0103ng nh\u01b0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch gi\u1eefa nhi\u1ec1u tr\u00ecnh duy\u1ec7t v\u00e0 t\u1ef1 \u0111\u1ed9ng ch\u1edd.<\/li>\n<\/ol>\n\n\n\n

        h\u1ed3ng ng\u1ecdc<\/h3>\n\n\n\n

        T\u00f4i ch\u01b0a bao gi\u1edd ch\u1ea1m v\u00e0o m\u1ed9t d\u00f2ng m\u00e3 Ruby n\u00e0o trong \u0111\u1eddi, nh\u01b0ng khi nghi\u00ean c\u1ee9u b\u00e0i \u0111\u0103ng n\u00e0y, t\u00f4i th\u1ea5y m\u1ed9t s\u1ed1 ng\u01b0\u1eddi d\u00f9ng tr\u00ean Reddit th\u1ec1 r\u1eb1ng n\u00f3 t\u1ed1t h\u01a1n Python trong vi\u1ec7c qu\u00e9t. \u0110\u1eebng h\u1ecfi t\u00f4i t\u1ea1i sao.<\/p>\n\n\n\n

          \n
        1. C\u01a1 gi\u1edbi h\u00f3a:<\/strong> Ngo\u00e0i vi\u1ec7c tr\u00edch xu\u1ea5t d\u1eef li\u1ec7u, th\u01b0 vi\u1ec7n Ruby n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh \u0111\u1ec3 \u0111i\u1ec1n v\u00e0o bi\u1ec3u m\u1eabu v\u00e0 nh\u1ea5p v\u00e0o li\u00ean k\u1ebft. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 qu\u1ea3n l\u00fd v\u00e0 x\u00e1c th\u1ef1c trang JavaScript.
          <\/li>\n\n\n\n
        2. Nokogiri: <\/strong>m\u1ed9t th\u01b0 vi\u1ec7n c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd m\u00e3 ngu\u1ed3n HTML v\u00e0 XML. N\u00f3 h\u1ed7 tr\u1ee3 b\u1ed9 ch\u1ecdn XPath v\u00e0 CSS.
          <\/li>\n\n\n\n
        3. HTTParty: <\/strong>c\u00f3 giao di\u1ec7n tr\u1ef1c quan gi\u00fap b\u1ea1n th\u1ef1c hi\u1ec7n c\u00e1c y\u00eau c\u1ea7u HTTP t\u1edbi m\u00e1y ch\u1ee7 d\u1ec5 d\u00e0ng h\u01a1n, v\u00ec v\u1eady n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m c\u01a1 s\u1edf cho c\u00e1c d\u1ef1 \u00e1n qu\u00e9t web.
          <\/li>\n\n\n\n
        4. Kimurai: <\/strong>N\u00f3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean C\u01a1 gi\u1edbi h\u00f3a v\u00e0 Nokogiri. N\u00f3 c\u00f3 c\u1ea5u tr\u00fac t\u1ed1t h\u01a1n v\u00e0 x\u1eed l\u00fd c\u00e1c t\u00e1c v\u1ee5 nh\u01b0 thu th\u1eadp d\u1eef li\u1ec7u nhi\u1ec1u trang, qu\u1ea3n l\u00fd cookie v\u00e0 x\u1eed l\u00fd JavaScript.
          <\/li>\n\n\n\n
        5. T\u1eed cung:<\/strong> M\u1ed9t vi\u00ean ng\u1ecdc Ruby \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 qu\u00e9t web. N\u00f3 cung c\u1ea5p DSL (Ng\u00f4n ng\u1eef d\u00e0nh ri\u00eang cho mi\u1ec1n) gi\u00fap x\u00e1c \u0111\u1ecbnh c\u00e1c quy t\u1eafc c\u1ea1o d\u1ec5 d\u00e0ng h\u01a1n.<\/li>\n<\/ol>\n\n\n\n

          PHP<\/h3>\n\n\n\n

          Ch\u1ec9 li\u1ec7t k\u00ea n\u00f3 \u0111\u1ec3 c\u00f3 m\u1ed9t b\u00e0i vi\u1ebft ho\u00e0n ch\u1ec9nh ch\u1ee9 kh\u00f4ng s\u1eed d\u1ee5ng PHP \u0111\u1ec3 c\u1ea1o.<\/p>\n\n\n\n

            \n
          1. b\u1ec7nh g\u00fat: <\/strong>\u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf tr\u00ean c\u00e1c th\u00e0nh ph\u1ea7n BrowserKit v\u00e0 DomCrawler c\u1ee7a Symfony. Th\u01b0 vi\u1ec7n n\u00e0y c\u00f3 API m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ec3 duy\u1ec7t c\u00e1c trang web, nh\u1ea5p v\u00e0o li\u00ean k\u1ebft v\u00e0 thu th\u1eadp d\u1eef li\u1ec7u.
            <\/li>\n\n\n\n
          2. Tr\u00ecnh ph\u00e2n t\u00edch c\u00fa ph\u00e1p DOM HTML \u0111\u01a1n gi\u1ea3n:<\/strong> C\u00f3 th\u1ec3 ph\u00e2n t\u00edch c\u00fa ph\u00e1p c\u00e1c t\u00e0i li\u1ec7u HTML v\u00e0 XML v\u1edbi th\u01b0 vi\u1ec7n n\u00e0y. Nh\u1edd c\u00fa ph\u00e1p gi\u1ed1ng jQuery, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thao t\u00e1c DOM.
            <\/li>\n\n\n\n
          3. \u0102n tham:<\/strong> API c\u1ea5p cao c\u1ee7a n\u00f3 cho ph\u00e9p b\u1ea1n th\u1ef1c hi\u1ec7n c\u00e1c y\u00eau c\u1ea7u HTTP v\u00e0 qu\u1ea3n l\u00fd c\u00e1c ph\u1ea3n h\u1ed3i kh\u00e1c nhau m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 nh\u1eadn l\u1ea1i.<\/li>\n<\/ol>\n\n\n\n

            Java<\/h3>\n\n\n\n

            C\u00e1c th\u01b0 vi\u1ec7n m\u00e0 Java cung c\u1ea5p \u0111\u1ec3 qu\u00e9t web l\u00e0 g\u00ec? H\u00e3y xem n\u00e0o:<\/p>\n\n\n\n

              \n
            1. JSoup:<\/strong> vi\u1ec7c ph\u00e2n t\u00edch v\u00e0 tr\u00edch xu\u1ea5t c\u00e1c ph\u1ea7n t\u1eed t\u1eeb m\u1ed9t trang web s\u1ebd kh\u00f4ng th\u00e0nh v\u1ea5n \u0111\u1ec1 v\u1edbi th\u01b0 vi\u1ec7n n\u00e0y, th\u01b0 vi\u1ec7n n\u00e0y c\u00f3 API \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 gi\u00fap b\u1ea1n ho\u00e0n th\u00e0nh nhi\u1ec7m v\u1ee5 n\u00e0y.
              <\/li>\n\n\n\n
            2. Selen:<\/strong> cho ph\u00e9p b\u1ea1n qu\u1ea3n l\u00fd c\u00e1c trang web c\u00f3 l\u01b0\u1ee3ng JavaScript cao trong m\u00e3 ngu\u1ed3n c\u1ee7a n\u00f3, do \u0111\u00f3 b\u1ea1n c\u00f3 th\u1ec3 tr\u00edch xu\u1ea5t t\u1ea5t c\u1ea3 d\u1eef li\u1ec7u \u1edf \u0111\u1ecbnh d\u1ea1ng n\u00e0y m\u00e0 b\u1ea1n quan t\u00e2m.
              <\/li>\n\n\n\n
            3. Apache HTTPClient: <\/strong>s\u1eed d\u1ee5ng API c\u1ea5p th\u1ea5p do th\u01b0 vi\u1ec7n n\u00e0y cung c\u1ea5p \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c y\u00eau c\u1ea7u HTTP.
              <\/li>\n\n\n\n
            4. Html\u0110\u01a1n v\u1ecb:<\/strong> Th\u01b0 vi\u1ec7n n\u00e0y m\u00f4 ph\u1ecfng m\u1ed9t tr\u00ecnh duy\u1ec7t web kh\u00f4ng c\u00f3 giao di\u1ec7n \u0111\u1ed3 h\u1ecda (hay c\u00f2n g\u1ecdi l\u00e0 kh\u00f4ng c\u00f3 \u0111\u1ea7u) v\u00e0 cho ph\u00e9p b\u1ea1n t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c trang web theo ch\u01b0\u01a1ng tr\u00ecnh. \u0110\u1eb7c bi\u1ec7t h\u1eefu \u00edch cho c\u00e1c trang web n\u1eb7ng v\u1ec1 JavaScript v\u00e0 b\u1eaft ch\u01b0\u1edbc c\u00e1c h\u00e0nh \u0111\u1ed9ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng nh\u01b0 nh\u1ea5p v\u00e0o n\u00fat ho\u1eb7c \u0111i\u1ec1n bi\u1ec3u m\u1eabu.
              <\/li>\n<\/ol>\n\n\n\n

              Suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 vi\u1ec7c qu\u00e9t to\u00e0n b\u1ed9 trang web n\u00e0y<\/h2>\n\n\n\n

              T\u00f4i hy v\u1ecdng b\u00e2y gi\u1edd m\u1ecdi chuy\u1ec7n \u0111\u00e3 r\u00f5 r\u00e0ng: vi\u1ec7c qu\u00e9t web r\u1ea5t hi\u1ec7u qu\u1ea3 n\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u00fang c\u00e1ch!<\/p>\n\n\n\n

              B\u00e2y gi\u1edd b\u1ea1n \u0111\u00e3 bi\u1ebft n\u00f3 l\u00e0 g\u00ec v\u00e0 nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3, \u0111\u00e3 \u0111\u1ebfn l\u00fac t\u00ecm hi\u1ec3u c\u00e1ch tri\u1ec3n khai n\u00f3 trong quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ee7a b\u1ea1n, c\u00f3 nhi\u1ec1u c\u00e1ch m\u00e0 doanh nghi\u1ec7p c\u00f3 th\u1ec3 h\u01b0\u1edfng l\u1ee3i t\u1eeb n\u00f3.<\/p>\n\n\n\n

              C\u00e1c ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh nh\u01b0 Python, JavaScript v\u00e0 Ruby l\u00e0 nh\u1eefng v\u1ecb vua kh\u00f4ng th\u1ec3 tranh c\u00e3i trong vi\u1ec7c qu\u00e9t web. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng PHP cho n\u00f3\u2026 Nh\u01b0ng t\u1ea1i sao? Ch\u1ec9 l\u00e0 v\u00ec sao!?<\/p>\n\n\n\n

              Nghi\u00eam t\u00fac m\u00e0 n\u00f3i, \u0111\u1eebng s\u1eed d\u1ee5ng PHP \u0111\u1ec3 qu\u00e9t web, h\u00e3y s\u1eed d\u1ee5ng n\u00f3 tr\u00ean WordPress v\u00e0 Magento.<\/p>","protected":false},"excerpt":{"rendered":"

              Confused and want to know what in the world web scraping is and how it works? Well you’ve come to the right place because we’re about to lay down everything for you. Before we dive in, I can already tell you the short version: Web scraping is the process of extracting publicly available data from […]<\/p>\n","protected":false},"author":1,"featured_media":470948,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[35],"tags":[],"class_list":["post-470946","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles"],"acf":[],"_links":{"self":[{"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/posts\/470946","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/comments?post=470946"}],"version-history":[{"count":1,"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/posts\/470946\/revisions"}],"predecessor-version":[{"id":470947,"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/posts\/470946\/revisions\/470947"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/media\/470948"}],"wp:attachment":[{"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/media?parent=470946"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/categories?post=470946"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/tags?post=470946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}