S\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i: M\u00f4 h\u00ecnh h\u00f3a H\u00e0nh vi Ph\u1ee9c t\u1ea1p trong UML \ud83d\udd04<\/title>\n<link href=\"https:\/\/www.example.com\/state-machine-diagrams-modeling-complex-behaviors\" rel=\"canonical\"\/>\n<meta content=\"Understand how state machine diagrams model complex behaviors in UML. Explore states, transitions, events, and guards for robust system design.\" name=\"description\"\/><br \/>\n<body><\/p>\n<div style=\"background-color: #f0f7ff; border-left: 5px solid #007bff; padding: 20px; margin: 25px 0; border-radius: 4px; font-family: sans-serif;\">\n<h2 style=\"margin-top: 0; color: #0056b3; font-size: 1.5rem;\">\ud83d\udca1 Nh\u1eefng \u0111i\u1ec3m ch\u00ednh c\u1ea7n l\u01b0u \u00fd<\/h2>\n<ul style=\"margin-bottom: 0; padding-left: 20px; line-height: 1.6; color: #333;\">\n<li style=\"margin-bottom: 10px;\"><strong>Tr\u1ef1c quan h\u00f3a Logic:<\/strong>S\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan r\u00f5 r\u00e0ng v\u1ec1 v\u00f2ng \u0111\u1eddi \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 h\u00e0nh vi theo th\u1eddi gian.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>Qu\u1ea3n l\u00fd Tr\u1ea1ng th\u00e1i:<\/strong> Ch\u00fang \u0111\u1ecbnh ngh\u0129a c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3 (tr\u1ea1ng th\u00e1i) v\u00e0 c\u00e1c quy t\u1eafc (chuy\u1ec3n ti\u1ebfp) \u0111i\u1ec1u khi\u1ec3n s\u1ef1 di chuy\u1ec3n gi\u1eefa ch\u00fang.<\/li>\n<li style=\"margin-bottom: 10px;\"><strong>D\u1ef1a tr\u00ean S\u1ef1 ki\u1ec7n:<\/strong> Nh\u1eefng thay \u0111\u1ed5i ch\u1ec9 x\u1ea3y ra khi c\u00e1c s\u1ef1 ki\u1ec7n c\u1ee5 th\u1ec3 k\u00edch ho\u1ea1t m\u1ed9t chuy\u1ec3n ti\u1ebfp, \u0111\u1ea3m b\u1ea3o ph\u1ea3n \u1ee9ng h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t.<\/li>\n<li><strong>\u0110\u1ed3ng th\u1eddi:<\/strong>C\u00e1c v\u00f9ng song song cho ph\u00e9p m\u00f4 h\u00ecnh h\u00f3a nhi\u1ec1u h\u00e0nh vi \u0111\u1ed9c l\u1eadp x\u1ea3y ra \u0111\u1ed3ng th\u1eddi trong m\u1ed9t tr\u1ea1ng th\u00e1i duy nh\u1ea5t.<\/li>\n<\/ul>\n<\/div>\n<p>Trong l\u0129nh v\u1ef1c Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML), \u00edt s\u01a1 \u0111\u1ed3 n\u00e0o cung c\u1ea5p \u0111\u1ed9 ch\u00ednh x\u00e1c cao nh\u01b0 s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i cho c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ed9ng. Trong khi s\u01a1 \u0111\u1ed3 l\u1edbp m\u00f4 t\u1ea3 c\u1ea5u tr\u00fac v\u00e0 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 m\u00f4 t\u1ea3 lu\u1ed3ng t\u01b0\u01a1ng t\u00e1c, th\u00ec s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i t\u1eadp trung v\u00e0o l\u1ecbch s\u1eed \u0111\u1eddi s\u1ed1ng c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ee5 th\u1ec3. Ch\u00fang tr\u1ea3 l\u1eddi nh\u1eefng c\u00e2u h\u1ecfi then ch\u1ed1t: Th\u00e0nh ph\u1ea7n n\u00e0y h\u00e0nh x\u1eed nh\u01b0 th\u1ebf n\u00e0o theo th\u1eddi gian? D\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n n\u00e0o n\u00f3 thay \u0111\u1ed5i? \u0110i\u1ec1u g\u00ec x\u1ea3y ra khi m\u1ed9t s\u1ef1 ki\u1ec7n b\u1ea5t ng\u1edd x\u1ea3y ra?<\/p>\n<p>Hi\u1ec3u r\u00f5 nh\u1eefng s\u01a1 \u0111\u1ed3 n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ed1i v\u1edbi c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 h\u1ec7 th\u1ed1ng v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n l\u00e0m vi\u1ec7c tr\u00ean c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea3n \u1ee9ng, ph\u1ea7n m\u1ec1m nh\u00fang ho\u1eb7c c\u00e1c quy tr\u00ecnh nghi\u1ec7p v\u1ee5 ph\u1ee9c t\u1ea1p. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u00e1c c\u01a1 ch\u1ebf, t\u00ednh n\u0103ng n\u00e2ng cao v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n c\u1ee7a m\u00f4 h\u00ecnh h\u00f3a m\u00e1y tr\u1ea1ng th\u00e1i m\u00e0 kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c c\u00f4ng c\u1ee5 hay nh\u00e0 cung c\u1ea5p c\u1ee5 th\u1ec3.<\/p>\n<h2>C\u00e1c th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a M\u00e1y tr\u1ea1ng th\u00e1i \ud83c\udfd7\ufe0f<\/h2>\n<p>S\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb m\u1ed9t s\u1ed1 th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n. M\u1ed7i th\u00e0nh ph\u1ea7n ph\u1ee5c v\u1ee5 m\u1ed9t m\u1ee5c \u0111\u00edch c\u1ee5 th\u1ec3 trong vi\u1ec7c \u0111\u1ecbnh ngh\u0129a h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng. N\u1eafm v\u1eefng c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y cho ph\u00e9p x\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh h\u00e0nh vi v\u1eefng ch\u1eafc.<\/p>\n<h3>Tr\u1ea1ng th\u00e1i<\/h3>\n<p>M\u1ed9t tr\u1ea1ng th\u00e1i \u0111\u1ea1i di\u1ec7n cho m\u1ed9t \u0111i\u1ec1u ki\u1ec7n ho\u1eb7c t\u00ecnh hu\u1ed1ng trong v\u00f2ng \u0111\u1eddi c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng, trong \u0111\u00f3 n\u00f3 c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n m\u1ed9t ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c ch\u1edd \u0111\u1ee3i m\u1ed9t s\u1ef1 ki\u1ec7n. C\u00e1c tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng c\u00e1c h\u00ecnh ch\u1eef nh\u1eadt tr\u00f2n. C\u00f3 m\u1ed9t s\u1ed1 lo\u1ea1i tr\u1ea1ng th\u00e1i:<\/p>\n<ul>\n<li><strong>Tr\u1ea1ng th\u00e1i Kh\u1edfi \u0111\u1ea7u:<\/strong>\u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t h\u00ecnh tr\u00f2n \u0111en \u0111\u1eadm, \u0111\u00e2y \u0111\u00e1nh d\u1ea5u \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u c\u1ee7a m\u00e1y tr\u1ea1ng th\u00e1i.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i K\u1ebft th\u00fac:<\/strong>\u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t h\u00ecnh tr\u00f2n \u0111en \u0111\u1eadm b\u00ean trong m\u1ed9t h\u00ecnh tr\u00f2n, \u0111\u00e2y cho th\u1ea5y s\u1ef1 k\u1ebft th\u00fac c\u1ee7a m\u00e1y tr\u1ea1ng th\u00e1i.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i \u0110\u01a1n gi\u1ea3n:<\/strong>M\u1ed9t tr\u1ea1ng th\u00e1i kh\u00f4ng c\u00f3 c\u1ea5u tr\u00fac b\u00ean trong.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i H\u1ee3p th\u00e0nh:<\/strong>M\u1ed9t tr\u1ea1ng th\u00e1i ch\u1ee9a c\u00e1c tr\u1ea1ng th\u00e1i con. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p x\u00e2y d\u1ef1ng th\u1ee9 b\u1eadc v\u00e0 \u0111\u1ed9 ph\u1ee9c t\u1ea1p b\u00ean trong m\u1ed9t tr\u1ea1ng th\u00e1i duy nh\u1ea5t.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i M\u00e1y tr\u1ea1ng th\u00e1i con:<\/strong>M\u1ed9t tr\u1ea1ng th\u00e1i g\u1ecdi \u0111\u1ebfn m\u1ed9t s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i kh\u00e1c, th\u00fac \u0111\u1ea9y vi\u1ec7c t\u00e1i s\u1eed d\u1ee5ng.<\/li>\n<\/ul>\n<h3>Chuy\u1ec3n ti\u1ebfp<\/h3>\n<p>C\u00e1c chuy\u1ec3n ti\u1ebfp \u0111\u1ecbnh ngh\u0129a s\u1ef1 di chuy\u1ec3n t\u1eeb m\u1ed9t tr\u1ea1ng th\u00e1i n\u00e0y sang tr\u1ea1ng th\u00e1i kh\u00e1c. Ch\u00fang \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi c\u00e1c s\u1ef1 ki\u1ec7n v\u00e0 c\u00f3 th\u1ec3 bao g\u1ed3m \u0111i\u1ec1u ki\u1ec7n v\u00e0 h\u00e0nh \u0111\u1ed9ng. V\u1ec1 m\u1eb7t tr\u1ef1c quan, m\u1ed9t chuy\u1ec3n ti\u1ebfp l\u00e0 m\u1ed9t m\u0169i t\u00ean ch\u1ec9 t\u1eeb tr\u1ea1ng th\u00e1i ngu\u1ed3n \u0111\u1ebfn tr\u1ea1ng th\u00e1i \u0111\u00edch.<\/p>\n<h3>S\u1ef1 ki\u1ec7n<\/h3>\n<p>M\u1ed9t s\u1ef1 ki\u1ec7n l\u00e0 m\u1ed9t s\u1ef1 ki\u1ec7n quan tr\u1ecdng k\u00edch ho\u1ea1t m\u1ed9t chuy\u1ec3n ti\u1ebfp. C\u00e1c s\u1ef1 ki\u1ec7n c\u00f3 th\u1ec3 l\u00e0:<\/p>\n<ul>\n<li><strong>S\u1ef1 ki\u1ec7n t\u00edn hi\u1ec7u:<\/strong>C\u00e1c giao ti\u1ebfp b\u1ea5t \u0111\u1ed3ng b\u1ed9.<\/li>\n<li><strong>S\u1ef1 ki\u1ec7n g\u1ecdi:<\/strong>C\u00e1c l\u1eddi g\u1ecdi ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ed3ng b\u1ed9.<\/li>\n<li><strong>S\u1ef1 ki\u1ec7n thay \u0111\u1ed5i:<\/strong>C\u00e1c bi\u1ec3u th\u1ee9c logic tr\u1edf th\u00e0nh \u0111\u00fang.<\/li>\n<li><strong>S\u1ef1 ki\u1ec7n th\u1eddi gian:<\/strong>C\u00e1c \u0111i\u1ec1u ki\u1ec7n d\u1ef1a tr\u00ean kho\u1ea3ng th\u1eddi gian ho\u1eb7c c\u00e1c th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3 tr\u00ean \u0111\u1ed3ng h\u1ed3.<\/li>\n<\/ul>\n<h3>H\u00e0nh \u0111\u1ed9ng v\u00e0 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7<\/h3>\n<p>Khi m\u1ed9t chuy\u1ec3n ti\u1ebfp x\u1ea3y ra, c\u00e1c h\u00e0nh \u0111\u1ed9ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c thi. Ch\u00fang \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u b\u1eb1ng t\u1eeb kh\u00f3a<code>h\u00e0nh \u0111\u1ed9ng<\/code>. M\u1ed9t \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 l\u00e0 m\u1ed9t bi\u1ec3u th\u1ee9c logic \u0111\u01b0\u1ee3c \u0111\u00f3ng trong d\u1ea5u ngo\u1eb7c vu\u00f4ng<code>[\u0111i\u1ec1u ki\u1ec7n]<\/code>. Chuy\u1ec3n ti\u1ebfp ch\u1ec9 x\u1ea3y ra n\u1ebfu \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 \u0111\u00e1nh gi\u00e1 l\u00e0 \u0111\u00fang. N\u1ebfu c\u00f3 nhi\u1ec1u chuy\u1ec3n ti\u1ebfp kh\u1ea3 thi, chuy\u1ec3n ti\u1ebfp \u0111\u1ea7u ti\u00ean c\u00f3 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 \u0111\u00fang s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n.<\/p>\n<h2>C\u00e1c k\u1ef9 thu\u1eadt m\u00f4 h\u00ecnh h\u00f3a n\u00e2ng cao \ud83e\udde0<\/h2>\n<p>Khi c\u00e1c h\u1ec7 th\u1ed1ng tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p h\u01a1n, c\u00e1c tr\u1ea1ng th\u00e1i v\u00e0 chuy\u1ec3n ti\u1ebfp c\u01a1 b\u1ea3n th\u01b0\u1eddng kh\u00f4ng \u0111\u1ee7. C\u00e1c t\u00ednh n\u0103ng n\u00e2ng cao cho ph\u00e9p m\u00f4 h\u00ecnh h\u00f3a tinh t\u1ebf h\u01a1n c\u00e1c t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf.<\/p>\n<h3>C\u00e1c v\u00f9ng vu\u00f4ng g\u00f3c<\/h3>\n<p>C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ee9c t\u1ea1p th\u01b0\u1eddng th\u1ec3 hi\u1ec7n nhi\u1ec1u h\u00e0nh vi \u0111\u1ed3ng th\u1eddi. C\u00e1c v\u00f9ng vu\u00f4ng g\u00f3c cho ph\u00e9p m\u1ed9t tr\u1ea1ng th\u00e1i t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c m\u00e1y con \u0111\u1ed9c l\u1eadp. V\u00ed d\u1ee5, tr\u1ea1ng th\u00e1i<em>\u0110i\u1ec7n tho\u1ea1i<\/em>c\u00f3 th\u1ec3 c\u00f3 m\u1ed9t v\u00f9ng cho<em>B\u00e1o \u0111\u1ed5 chu\u00f4ng<\/em>v\u00e0 m\u1ed9t v\u00f9ng kh\u00e1c cho<em>\u0110ang s\u1ea1c<\/em>. C\u00e1c v\u00f9ng n\u00e0y ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed3ng th\u1eddi, ngh\u0129a l\u00e0 \u0111i\u1ec7n tho\u1ea1i c\u00f3 th\u1ec3 \u0111\u1ed5 chu\u00f4ng trong khi \u0111ang s\u1ea1c. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng n\u00e9t \u0111\u1ee9t chia tr\u1ea1ng th\u00e1i t\u1ed5ng h\u1ee3p.<\/p>\n<h3>C\u00e1c tr\u1ea1ng th\u00e1i l\u1ecbch s\u1eed<\/h3>\n<p>C\u00e1c tr\u1ea1ng th\u00e1i l\u1ecbch s\u1eed l\u01b0u gi\u1eef th\u00f4ng tin v\u1ec1 tr\u1ea1ng th\u00e1i c\u1ee7a m\u1ed9t tr\u1ea1ng th\u00e1i t\u1ed5ng h\u1ee3p khi n\u00f3 r\u1eddi kh\u1ecfi v\u00e0 quay l\u1ea1i. C\u00f3 hai lo\u1ea1i:<\/p>\n<ul>\n<li><strong>L\u1ecbch s\u1eed s\u00e2u:<\/strong>Ghi nh\u1edb tr\u1ea1ng th\u00e1i con ho\u1ea1t \u0111\u1ed9ng cu\u1ed1i c\u00f9ng.<\/li>\n<li><strong>L\u1ecbch s\u1eed n\u00f4ng:<\/strong>\u0110\u00e3 ghi nh\u1edb tr\u1ea1ng th\u00e1i con c\u1ea5p cao nh\u1ea5t \u0111ang ho\u1ea1t \u0111\u1ed9ng cu\u1ed1i c\u00f9ng.<\/li>\n<\/ul>\n<p>\u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c quy tr\u00ecnh l\u00e0m vi\u1ec7c n\u01a1i vi\u1ec7c quay l\u1ea1i m\u00e0n h\u00ecnh ph\u1ee9c t\u1ea1p c\u1ea7n kh\u00f4i ph\u1ee5c l\u1ea1i ng\u1eef c\u1ea3nh tr\u01b0\u1edbc \u0111\u00f3 m\u00e0 kh\u00f4ng c\u1ea7n kh\u1edfi t\u1ea1o l\u1ea1i to\u00e0n b\u1ed9 lu\u1ed3ng.<\/p>\n<h3>Ho\u1ea1t \u0111\u1ed9ng v\u00e0o, ra v\u00e0 th\u1ef1c hi\u1ec7n<\/h3>\n<p>Trong m\u1ed9t tr\u1ea1ng th\u00e1i, c\u00e1c ho\u1ea1t \u0111\u1ed9ng c\u1ee5 th\u1ec3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t:<\/p>\n<ul>\n<li><strong>V\u00e0o:<\/strong>\u0110\u01b0\u1ee3c th\u1ef1c hi\u1ec7n m\u1ed9t l\u1ea7n khi v\u00e0o tr\u1ea1ng th\u00e1i.<\/li>\n<li><strong>Ra:<\/strong>\u0110\u01b0\u1ee3c th\u1ef1c hi\u1ec7n m\u1ed9t l\u1ea7n khi r\u1eddi kh\u1ecfi tr\u1ea1ng th\u00e1i.<\/li>\n<li><strong>Th\u1ef1c hi\u1ec7n:<\/strong>\u0110\u01b0\u1ee3c th\u1ef1c hi\u1ec7n li\u00ean t\u1ee5c trong khi tr\u1ea1ng th\u00e1i \u0111ang ho\u1ea1t \u0111\u1ed9ng. \u0110i\u1ec1u n\u00e0y h\u1eefu \u00edch cho vi\u1ec7c ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3, gi\u00e1m s\u00e1t ho\u1eb7c duy tr\u00ec m\u1ed9t v\u00f2ng l\u1eb7p.<\/li>\n<\/ul>\n<h2>S\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i so v\u1edbi S\u01a1 \u0111\u1ed3 Ho\u1ea1t \u0111\u1ed9ng \u2696\ufe0f<\/h2>\n<p>Vi\u1ec7c ch\u1ecdn lo\u1ea1i s\u01a1 \u0111\u1ed3 ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng. M\u1eb7c d\u00f9 c\u1ea3 hai \u0111\u1ec1u m\u00f4 h\u00ecnh h\u00f3a h\u00e0nh vi, nh\u01b0ng ch\u00fang ph\u1ee5c v\u1ee5 c\u00e1c m\u1ee5c \u0111\u00edch kh\u00e1c nhau. B\u1ea3ng sau \u0111\u00e2y l\u00e0m r\u00f5 khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng t\u1eebng lo\u1ea1i.<\/p>\n<table border=\"1\" cellpadding=\"10\" cellspacing=\"0\" style=\"width: 100%; border-collapse: collapse; font-family: sans-serif;\">\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"text-align: left;\">T\u00ednh n\u0103ng<\/th>\n<th style=\"text-align: left;\">S\u01a1 \u0111\u1ed3 M\u00e1y tr\u1ea1ng th\u00e1i<\/th>\n<th style=\"text-align: left;\">S\u01a1 \u0111\u1ed3 Ho\u1ea1t \u0111\u1ed9ng<\/th>\n<\/tr>\n<tr>\n<td><strong>Tr\u1ecdng t\u00e2m<\/strong><\/td>\n<td>Chu k\u1ef3 s\u1ed1ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 t\u00ednh ph\u1ea3n \u1ee9ng<\/td>\n<td>Quy tr\u00ecnh l\u00e0m vi\u1ec7c v\u00e0 lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n<\/td>\n<\/tr>\n<tr>\n<td><strong>K\u00edch ho\u1ea1t<\/strong><\/td>\n<td>S\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t chuy\u1ec3n ti\u1ebfp<\/td>\n<td>Vi\u1ec7c ho\u00e0n th\u00e0nh ho\u1ea1t \u0111\u1ed9ng tr\u01b0\u1edbc k\u00edch ho\u1ea1t ho\u1ea1t \u0111\u1ed9ng ti\u1ebfp theo<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0110\u1ed3ng th\u1eddi<\/strong><\/td>\n<td>C\u00e1c v\u00f9ng vu\u00f4ng g\u00f3c<\/td>\n<td>Thanh chia\/t\u1ed5ng h\u1ee3p<\/td>\n<\/tr>\n<tr>\n<td><strong>Ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi<\/strong><\/td>\n<td>H\u1ec7 th\u1ed1ng nh\u00fang, giao th\u1ee9c<\/td>\n<td>Quy tr\u00ecnh kinh doanh, thu\u1eadt to\u00e1n<\/td>\n<\/tr>\n<\/table>\n<h2>C\u00e1c m\u1eabu thi\u1ebft k\u1ebf v\u00e0 tri\u1ec3n khai \ud83d\udee0\ufe0f<\/h2>\n<p>Vi\u1ec7c tri\u1ec3n khai m\u00e1y tr\u1ea1ng th\u00e1i trong m\u00e3 ngu\u1ed3n \u0111\u00f2i h\u1ecfi l\u00ean k\u1ebf ho\u1ea1ch c\u1ea9n th\u1eadn \u0111\u1ec3 tr\u00e1nh logic r\u1ed1i r\u1eafm. M\u1ed9t s\u1ed1 m\u1eabu thi\u1ebft k\u1ebf h\u1ed7 tr\u1ee3 \u0111i\u1ec1u n\u00e0y.<\/p>\n<h3>M\u1eabu Tr\u1ea1ng th\u00e1i<\/h3>\n<p>Trong l\u1eadp tr\u00ecnh h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng, m\u1eabu State cho ph\u00e9p m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng thay \u0111\u1ed5i h\u00e0nh vi c\u1ee7a n\u00f3 khi tr\u1ea1ng th\u00e1i n\u1ed9i b\u1ed9 c\u1ee7a n\u00f3 thay \u0111\u1ed5i. M\u1ed7i tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1edfi m\u1ed9t l\u1edbp. \u0110i\u1ec1u n\u00e0y \u0111\u00f3ng g\u00f3i logic \u0111\u1eb7c th\u00f9 theo tr\u1ea1ng th\u00e1i, gi\u00fap l\u1edbp ch\u00ednh \u0111\u01a1n gi\u1ea3n h\u01a1n.<\/p>\n<h3>M\u00e1y tr\u1ea1ng th\u00e1i \u0111i\u1ec1u khi\u1ec3n b\u1edfi b\u1ea3ng<\/h3>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u01a1n gi\u1ea3n h\u01a1n, m\u1ed9t b\u1ea3ng tra c\u1ee9u c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c chuy\u1ec3n ti\u1ebfp. Tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i v\u00e0 s\u1ef1 ki\u1ec7n \u0111\u00f3ng vai tr\u00f2 l\u00e0 kh\u00f3a \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh tr\u1ea1ng th\u00e1i ti\u1ebfp theo v\u00e0 h\u00e0nh \u0111\u1ed9ng c\u1ea7n th\u1ef1c hi\u1ec7n. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y r\u1ea5t hi\u1ec7u qu\u1ea3 trong vi\u1ec7c ph\u00e2n t\u00edch c\u00fa ph\u00e1p ho\u1eb7c x\u1eed l\u00fd giao th\u1ee9c.<\/p>\n<h2>Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh \u26a0\ufe0f<\/h2>\n<p>Ngay c\u1ea3 nh\u1eefng ng\u01b0\u1eddi m\u00f4 h\u00ecnh h\u00f3a c\u00f3 kinh nghi\u1ec7m c\u0169ng c\u00f3 th\u1ec3 m\u1eafc b\u1eaby. Ghi nh\u1edb nh\u1eefng v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn n\u00e0y s\u1ebd c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng s\u01a1 \u0111\u1ed3.<\/p>\n<ul>\n<li><strong>B\u00f9ng n\u1ed5 tr\u1ea1ng th\u00e1i:<\/strong>T\u1ea1o qu\u00e1 nhi\u1ec1u tr\u1ea1ng th\u00e1i khi\u1ebfn s\u01a1 \u0111\u1ed3 tr\u1edf n\u00ean kh\u00f3 \u0111\u1ecdc. H\u00e3y s\u1eed d\u1ee5ng c\u00e1c tr\u1ea1ng th\u00e1i h\u1ee3p th\u00e0nh \u0111\u1ec3 nh\u00f3m c\u00e1c h\u00e0nh vi li\u00ean quan.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i kh\u00f4ng th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c:<\/strong> \u0110\u1ea3m b\u1ea3o m\u1ecdi tr\u1ea1ng th\u00e1i \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1eeb tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u. Nh\u1eefng \u0111i\u1ec3m ch\u1ebft s\u1ebd khi\u1ebfn ng\u01b0\u1eddi b\u1ea3o tr\u00ec b\u1ed1i r\u1ed1i.<\/li>\n<li><strong>Thi\u1ebfu c\u00e1c chuy\u1ec3n ti\u1ebfp:<\/strong> X\u00e1c \u0111\u1ecbnh h\u00e0nh vi cho m\u1ecdi s\u1ef1 ki\u1ec7n. \u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu m\u1ed9t s\u1ef1 ki\u1ec7n x\u1ea3y ra trong tr\u1ea1ng th\u00e1i kh\u00f4ng mong \u0111\u1ee3i? H\u00e3y s\u1eed d\u1ee5ng tr\u1ea1ng th\u00e1i m\u1eb7c \u0111\u1ecbnh ho\u1eb7c tr\u1ea1ng th\u00e1i l\u1ed7i.<\/li>\n<li><strong>\u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 ph\u1ee9c t\u1ea1p:<\/strong> Tr\u00e1nh c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 qu\u00e1 ph\u1ee9c t\u1ea1p. N\u1ebfu m\u1ed9t \u0111i\u1ec1u ki\u1ec7n qu\u00e1 kh\u00f3 \u0111\u1ecdc, h\u00e3y c\u00e2n nh\u1eafc chia logic th\u00e0nh c\u00e1c tr\u1ea1ng th\u00e1i ri\u00eang bi\u1ec7t.<\/li>\n<\/ul>\n<h2>V\u00ed d\u1ee5 th\u1ef1c t\u1ebf: X\u1eed l\u00fd \u0111\u01a1n h\u00e0ng \ud83d\uded2<\/h2>\n<p>H\u00e3y xem x\u00e9t m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u01a1n h\u00e0ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed. \u0110\u1ed1i t\u01b0\u1ee3ng \u0111\u01a1n h\u00e0ng di chuy\u1ec3n qua nhi\u1ec1u tr\u1ea1ng th\u00e1i:<\/p>\n<ol>\n<li><strong>\u0110\u00e3 t\u1ea1o:<\/strong> \u0110\u01a1n h\u00e0ng \u0111\u01b0\u1ee3c l\u01b0u nh\u01b0ng ch\u01b0a \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn.<\/li>\n<li><strong>\u0110\u00e3 thanh to\u00e1n:<\/strong> Thanh to\u00e1n \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh.<\/li>\n<li><strong>\u0110\u00e3 giao:<\/strong> H\u00e0ng h\u00f3a \u0111\u00e3 \u0111\u01b0\u1ee3c g\u1eedi \u0111i.<\/li>\n<li><strong>\u0110\u00e3 giao \u0111\u1ebfn:<\/strong> Kh\u00e1ch h\u00e0ng nh\u1eadn \u0111\u01b0\u1ee3c h\u00e0ng h\u00f3a.<\/li>\n<li><strong>\u0110\u00e3 h\u1ee7y:<\/strong> Quy tr\u00ecnh \u0111\u00e3 b\u1ecb k\u1ebft th\u00fac.<\/li>\n<\/ol>\n<p>C\u00e1c chuy\u1ec3n ti\u1ebfp \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi c\u00e1c s\u1ef1 ki\u1ec7n nh\u01b0<code>X\u00e1c nh\u1eadnThanhTo\u00e1n<\/code>, <code>Giao\u0110\u01a1n<\/code>, ho\u1eb7c<code>Y\u00eau c\u1ea7u h\u1ee7y<\/code>. \u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 \u0111\u1ea3m b\u1ea3o \u0111\u01a1n h\u00e0ng kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c giao tr\u01b0\u1edbc khi thanh to\u00e1n \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn. M\u1ed9t <em>Th\u1ef1c hi\u1ec7n<\/em>ho\u1ea1t \u0111\u1ed9ng c\u00f3 th\u1ec3 theo d\u00f5i tr\u1ea1ng th\u00e1i thanh to\u00e1n trong khi \u1edf tr\u1ea1ng th\u00e1i <em>\u0110\u00e3 t\u1ea1o<\/em> tr\u1ea1ng th\u00e1i.<\/p>\n<h2>K\u1ebft lu\u1eadn v\u00e0 C\u00e1c Th\u1ef1c Ti\u1ec5n T\u1ed1t Nh\u1ea5t \u2705<\/h2>\n<p>S\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i l\u00e0 c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd \u0111\u1ec3 ghi l\u1ea1i h\u00e0nh vi \u0111\u1ed9ng c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n ph\u1ea7n m\u1ec1m. Ch\u00fang cung c\u1ea5p c\u00e1ch th\u1ee9c nghi\u00eam ng\u1eb7t \u0111\u1ec3 \u0111\u1ecbnh ngh\u0129a c\u00e1ch h\u1ec7 th\u1ed1ng ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c k\u00edch th\u00edch theo th\u1eddi gian. B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 k\u00fd hi\u1ec7u UML chu\u1ea9n v\u00e0 t\u1eadp trung v\u00e0o s\u1ef1 r\u00f5 r\u00e0ng, c\u00e1c \u0111\u1ed9i ng\u0169 c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ef1 m\u01a1 h\u1ed3 trong y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng.<\/p>\n<p>Khi m\u00f4 h\u00ecnh h\u00f3a, h\u00e3y \u01b0u ti\u00ean t\u00ednh d\u1ec5 \u0111\u1ecdc. M\u1ed9t s\u01a1 \u0111\u1ed3 d\u1ec5 hi\u1ec3u c\u00f3 gi\u00e1 tr\u1ecb h\u01a1n so v\u1edbi m\u1ed9t s\u01a1 \u0111\u1ed3 ho\u00e0n h\u1ea3o v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt nh\u01b0ng g\u00e2y nh\u1ea7m l\u1eabn. S\u1eed d\u1ee5ng c\u00e1c tr\u1ea1ng th\u00e1i h\u1ee3p th\u00e0nh \u0111\u1ec3 qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u00e0 t\u1eadn d\u1ee5ng c\u00e1c tr\u1ea1ng th\u00e1i l\u1ecbch s\u1eed \u0111\u1ec3 b\u1ea3o t\u1ed3n ng\u1eef c\u1ea3nh. Th\u01b0\u1eddng xuy\u00ean xem x\u00e9t l\u1ea1i c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y v\u1edbi c\u00e1c b\u00ean li\u00ean quan \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u00fang ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u th\u1ef1c t\u1ebf c\u1ee7a doanh nghi\u1ec7p.<\/p>\n<p>Vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a hi\u1ec7u qu\u1ea3 d\u1eabn \u0111\u1ebfn m\u00e3 ngu\u1ed3n \u0111\u00e1ng tin c\u1eady h\u01a1n. Khi thi\u1ebft k\u1ebf r\u00f5 r\u00e0ng, vi\u1ec7c tri\u1ec3n khai s\u1ebd t\u1ef1 nhi\u00ean theo sau, gi\u1ea3m thi\u1ec3u l\u1ed7i v\u00e0 chi ph\u00ed b\u1ea3o tr\u00ec. 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