{"id":9957,"date":"2026-05-22T10:03:21","date_gmt":"2026-05-22T02:03:21","guid":{"rendered":"https:\/\/blog.visual-paradigm.com\/cn\/orchestrating-complex-control-flow-a-comprehensive-case-study-on-uml-2-0-interaction-fragments\/"},"modified":"2026-05-30T15:01:30","modified_gmt":"2026-05-30T07:01:30","slug":"orchestrating-complex-control-flow-a-comprehensive-case-study-on-uml-2-0-interaction-fragments","status":"publish","type":"post","link":"https:\/\/blog.visual-paradigm.com\/cn\/orchestrating-complex-control-flow-a-comprehensive-case-study-on-uml-2-0-interaction-fragments\/","title":{"rendered":"\u7f16\u6392\u590d\u6742\u63a7\u5236\u6d41\uff1aUML 2.0\u4ea4\u4e92\u7247\u6bb5\u7684\u7efc\u5408\u6848\u4f8b\u7814\u7a76"},"content":{"rendered":"<h2 data-nodeid=\"6998\">\u5f15\u8a00<\/h2>\n<p 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Fragments\" class=\"alignnone wp-image-24714 size-full\" decoding=\"async\" height=\"510\" loading=\"lazy\" sizes=\"auto, (max-width: 916px) 100vw, 916px\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb9404a8b7.png\" srcset=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb9404a8b7.png 916w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb9404a8b7-300x167.png 300w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb9404a8b7-768x428.png 768w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb9404a8b7-150x84.png 150w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb9404a8b7-400x223.png 400w\" width=\"916\"\/><\/p>\n<hr data-nodeid=\"7001\"\/>\n<h2 data-nodeid=\"7002\">\u6848\u4f8b\u7814\u7a76\u80cc\u666f\u4e0e\u5efa\u6a21\u6311\u6218<\/h2>\n<p data-nodeid=\"7003\">\u4ee5\u4e0b\u6848\u4f8b\u7814\u7a76\u56f4\u7ed5<strong data-nodeid=\"7123\">NexaRetail<\/strong>\u2014\u2014\u4e00\u4e2a\u9ad8\u6d41\u91cf\u7535\u5b50\u5546\u52a1\u5e73\u53f0\uff0c\u8d1f\u8d23\u5b9e\u65f6\u5e93\u5b58\u540c\u6b65\u3001\u591a\u7f51\u5173\u652f\u4ed8\u8def\u7531\u4ee5\u53ca\u5f02\u6b65\u7269\u6d41\u8c03\u5ea6\u3002\u5de5\u7a0b\u56e2\u961f\u9762\u4e34\u4e09\u5927\u6838\u5fc3\u5efa\u6a21\u6311\u6218\uff1a<\/p>\n<ol data-nodeid=\"7004\">\n<li data-nodeid=\"7005\">\n<p data-nodeid=\"7006\"><strong data-nodeid=\"7128\">\u6761\u4ef6\u8def\u7531\uff1a<\/strong>\u652f\u4ed8\u6388\u6743\u9700\u8981\u6839\u636e\u52a8\u6001\u8d26\u6237\u72b6\u6001\u9009\u62e9\u4e92\u65a5\u8def\u5f84\u3002<\/p>\n<\/li>\n<li data-nodeid=\"7007\">\n<p data-nodeid=\"7008\"><strong data-nodeid=\"7133\">\u5e76\u53d1\u6267\u884c\uff1a<\/strong>\u5e93\u5b58\u6263\u51cf\u4e0e\u627f\u8fd0\u5546\u8c03\u5ea6\u9700\u8981\u5e76\u884c\u8fd0\u884c\uff0c\u4e14\u4e0d\u80fd\u51fa\u73b0\u7ade\u4e89\u6761\u4ef6\u3002<\/p>\n<\/li>\n<li data-nodeid=\"7009\">\n<p data-nodeid=\"7010\"><strong data-nodeid=\"7138\">\u56fe\u8868\u53ef\u7ef4\u62a4\u6027\uff1a<\/strong>\u968f\u7740\u5de5\u4f5c\u6d41\u7684\u6269\u5c55\uff0c\u5355\u4f53\u5f0f\u987a\u5e8f\u56fe\u53d8\u5f97\u96be\u4ee5\u9605\u8bfb\u4e14\u96be\u4ee5\u8fdb\u884c\u7248\u672c\u63a7\u5236\u3002<\/p>\n<\/li>\n<\/ol>\n<p data-nodeid=\"7011\">\u4e3a\u89e3\u51b3\u8fd9\u4e9b\u6311\u6218\uff0c\u67b6\u6784\u56e2\u961f\u91c7\u7528UML 2.0\u4ea4\u4e92\u7247\u6bb5\u4f5c\u4e3a\u4e3b\u8981\u7684\u884c\u4e3a\u5efa\u6a21\u6807\u51c6\u3002<\/p>\n<hr data-nodeid=\"7012\"\/>\n<h2 data-nodeid=\"7013\">1. \u4ea4\u4e92\u7247\u6bb5\u7684\u7ed3\u6784\u673a\u5236<\/h2>\n<p data-nodeid=\"7014\">\u4e00\u4e2a<strong data-nodeid=\"7158\">\u4ea4\u4e92\u7247\u6bb5<\/strong>\u4f5c\u4e3a\u5c01\u88c5\u7279\u5b9a\u884c\u4e3a\u7247\u6bb5\u7684\u6a21\u5757\u5316\u7ed3\u6784\u5355\u5143\uff0c\u5b83\u5728<strong data-nodeid=\"7159\">\u4ea4\u4e92\u64cd\u4f5c\u6570<\/strong>\u4e2d\u8fd0\u884c\uff0c\u8be5\u64cd\u4f5c\u6570\u5305\u542b\u53c2\u4e0e\u7684\u751f\u547d\u5468\u671f\u7ebf\u548c\u6267\u884c\u8f68\u8ff9\u3002\u4e3a\u4e86\u7f16\u6392\u8fd9\u4e9b\u64cd\u4f5c\u6570\uff0cUML 2.0\u91c7\u7528<strong data-nodeid=\"7160\">\u7ec4\u5408\u7247\u6bb5<\/strong>\uff1a\u4e00\u4e2a\u5bb9\u5668\u6846\u67b6\uff0c\u5c06\u4e00\u4e2a\u6216\u591a\u4e2a\u64cd\u4f5c\u6570\u5f52\u5165\u5355\u4e00<strong data-nodeid=\"7161\">\u4ea4\u4e92\u64cd\u4f5c\u7b26<\/strong>\u4e4b\u4e0b\uff0c\u8be5\u64cd\u4f5c\u7b26\u51b3\u5b9a\u6267\u884c\u8bed\u4e49\u3002<\/p>\n<h3 data-nodeid=\"7015\">\u89c6\u89c9\u7b26\u53f7\u4e0e\u7ed3\u6784\u89c4\u5219<\/h3>\n<p data-nodeid=\"7016\">\u7ec4\u5408\u7247\u6bb5\u9075\u5faa\u4e25\u683c\u7684\u89c6\u89c9\u89c4\u8303\uff0c\u4ee5\u786e\u4fdd\u8de8\u5de5\u5177\u517c\u5bb9\u6027\u548c\u5f00\u53d1\u4eba\u5458\u53ef\u8bfb\u6027\uff1a<\/p>\n<ul data-nodeid=\"7017\">\n<li data-nodeid=\"7018\">\n<p data-nodeid=\"7019\"><strong data-nodeid=\"7176\">\u64cd\u4f5c\u7b26\u6807\u7b7e\uff1a<\/strong>\u00a0\u5728\u6846\u67b6\u5de6\u4e0a\u89d2\u7684\u4e00\u4e2a\u4e94\u8fb9\u5f62\u6807\u7b7e\uff0c\u5305\u542b\u64cd\u4f5c\u7b26\u77ed\u4ee3\u7801\uff08\u4f8b\u5982\u00a0<code data-backticks=\"1\" data-nodeid=\"7170\">alt<\/code>,\u00a0<code data-backticks=\"1\" data-nodeid=\"7172\">loop<\/code>,\u00a0<code data-backticks=\"1\" data-nodeid=\"7174\">par<\/code>).<\/p>\n<\/li>\n<li data-nodeid=\"7020\">\n<p data-nodeid=\"7021\"><strong data-nodeid=\"7183\">\u64cd\u4f5c\u6570\u4fdd\u62a4\u6761\u4ef6\uff1a<\/strong>\u00a0\u5185\u8054\u7684\u5e03\u5c14\u8868\u8fbe\u5f0f\uff0c\u7528\u65b9\u62ec\u53f7\u62ec\u8d77\u6765\u00a0<code data-backticks=\"1\" data-nodeid=\"7181\">[ \u6761\u4ef6 ]<\/code>\u00a0\u7528\u4e8e\u786e\u5b9a\u64cd\u4f5c\u6570\u662f\u5426\u6267\u884c\u3002<\/p>\n<\/li>\n<li data-nodeid=\"7022\">\n<p data-nodeid=\"7023\"><strong data-nodeid=\"7188\">\u64cd\u4f5c\u6570\u5206\u9694\u7b26\uff1a<\/strong>\u00a0\u6c34\u5e73\u865a\u7ebf\uff0c\u7528\u4e8e\u5206\u9694\u540c\u4e00\u6846\u67b6\u5185\u7684\u591a\u4e2a\u64cd\u4f5c\u6570\u3002<\/p>\n<\/li>\n<li data-nodeid=\"7024\">\n<p data-nodeid=\"7025\"><strong data-nodeid=\"7195\">\u6846\u67b6\u8fb9\u754c\uff1a<\/strong>\u00a0\u4e00\u4e2a\u900f\u660e\u7684\u77e9\u5f62\u6846\uff0c\u660e\u786e\u5730\u4e0e\u8be5\u7247\u6bb5\u4f5c\u7528\u57df\u5185\u6240\u6709\u6d3b\u52a8\u7684\u751f\u547d\u7ebf\u76f8\u4ea4\u3002<\/p>\n<\/li>\n<\/ul>\n<hr data-nodeid=\"7026\"\/>\n<h2 data-nodeid=\"7027\">2. \u64cd\u4f5c\u7b26\u8bed\u4e49\u4e0e\u6267\u884c\u63a7\u5236<\/h2>\n<p data-nodeid=\"7028\">UML 2.0 \u5b9a\u4e49\u4e86\u5341\u4e8c\u4e2a\u6807\u51c6\u7684\u4ea4\u4e92\u64cd\u4f5c\u7b26\u3002\u4e0b\u8868\u6982\u8ff0\u4e86\u5728 NexaRetail \u67b6\u6784\u4e2d\u90e8\u7f72\u7684\u6700\u5173\u952e\u7684\u63a7\u5236\u6d41\u64cd\u4f5c\u7b26\uff1a<\/p>\n<table data-nodeid=\"7030\">\n<thead data-nodeid=\"7031\">\n<tr data-nodeid=\"7032\">\n<th data-nodeid=\"7034\">\u64cd\u4f5c\u7b26<\/th>\n<th data-nodeid=\"7035\">\u5168\u79f0<\/th>\n<th data-nodeid=\"7036\">\u884c\u4e3a\u542b\u4e49\u4e0e\u6267\u884c\u89c4\u5219<\/th>\n<\/tr>\n<\/thead>\n<tbody data-nodeid=\"7040\">\n<tr data-nodeid=\"7041\">\n<td data-nodeid=\"7042\"><strong data-nodeid=\"7208\"><code data-backticks=\"1\" data-nodeid=\"7206\">alt<\/code><\/strong><\/td>\n<td data-nodeid=\"7043\">\u66ff\u4ee3<\/td>\n<td data-nodeid=\"7044\">\u8868\u793a\u5728\u4e92\u65a5\u8def\u5f84\u4e4b\u95f4\u7684\u6761\u4ef6\u9009\u62e9\uff08\u7c7b\u4f3c\u4e8e\u00a0<code data-backticks=\"1\" data-nodeid=\"7211\">if-else<\/code>\u00a0\u6216\u00a0<code data-backticks=\"1\" data-nodeid=\"7213\">switch<\/code>\uff09\u3002\u53ea\u6709\u4fdd\u62a4\u6761\u4ef6\u4e3a\u771f\u7684\u64cd\u4f5c\u6570\u624d\u4f1a\u6267\u884c\u3002<\/td>\n<\/tr>\n<tr data-nodeid=\"7045\">\n<td data-nodeid=\"7046\"><strong data-nodeid=\"7218\"><code data-backticks=\"1\" data-nodeid=\"7216\">opt<\/code><\/strong><\/td>\n<td data-nodeid=\"7047\">\u9009\u9879<\/td>\n<td data-nodeid=\"7048\">\u8868\u793a\u4e00\u4e2a\u5355\u4e00\u7684\u6761\u4ef6\u8def\u5f84\uff0c\u8be5\u8def\u5f84\u8981\u4e48\u5b8c\u5168\u6267\u884c\uff0c\u8981\u4e48\u88ab\u8df3\u8fc7\uff08\u7c7b\u4f3c\u4e8e\u4e00\u4e2a\u00a0<code data-backticks=\"1\" data-nodeid=\"7221\">\u5982\u679c<\/code>\u65e0<code data-backticks=\"1\" data-nodeid=\"7223\">\u5426\u5219<\/code>).<\/td>\n<\/tr>\n<tr data-nodeid=\"7049\">\n<td data-nodeid=\"7050\"><strong data-nodeid=\"7228\"><code data-backticks=\"1\" data-nodeid=\"7226\">\u5faa\u73af<\/code><\/strong><\/td>\n<td data-nodeid=\"7051\">\u5faa\u73af<\/td>\n<td data-nodeid=\"7052\">\u5bf9\u5c01\u88c5\u7684\u7247\u6bb5\u91cd\u590d\u6267\u884c\u6307\u5b9a\u5e8f\u5217\u3002\u652f\u6301\u663e\u5f0f\u7684\u8fed\u4ee3\u8fb9\u754c\uff08\u4f8b\u5982\uff0c<code data-backticks=\"1\" data-nodeid=\"7231\">\u5faa\u73af(1, 10)<\/code>).<\/td>\n<\/tr>\n<tr data-nodeid=\"7053\">\n<td data-nodeid=\"7054\"><strong data-nodeid=\"7236\"><code data-backticks=\"1\" data-nodeid=\"7234\">\u5e76\u884c<\/code><\/strong><\/td>\n<td data-nodeid=\"7055\">\u5e76\u884c<\/td>\n<td data-nodeid=\"7056\">\u5305\u542b\u5728\u72ec\u7acb\u7ebf\u7a0b\u4e2d\u5e76\u53d1\u6267\u884c\u7684\u64cd\u4f5c\u6570\u3002\u5141\u8bb8\u64cd\u4f5c\u6570\u4e4b\u95f4\u7684\u6d88\u606f\u4ea4\u9519\u3002<\/td>\n<\/tr>\n<tr data-nodeid=\"7057\">\n<td data-nodeid=\"7058\"><strong data-nodeid=\"7242\"><code data-backticks=\"1\" data-nodeid=\"7240\">\u987a\u5e8f<\/code><\/strong><\/td>\n<td data-nodeid=\"7059\">\u5f31\u987a\u5e8f<\/td>\n<td data-nodeid=\"7060\">\u9ed8\u8ba4\u884c\u4e3a\u3002\u5728\u64cd\u4f5c\u6570\u5185\u90e8\u4fdd\u6301\u4e25\u683c\u7684\u81ea\u4e0a\u800c\u4e0b\u987a\u5e8f\uff0c\u4f46\u5141\u8bb8\u5728\u72ec\u7acb\u7684\u751f\u547d\u7ebf\u4e4b\u95f4\u4ea4\u9519\u3002<\/td>\n<\/tr>\n<tr data-nodeid=\"7061\">\n<td data-nodeid=\"7062\"><strong data-nodeid=\"7248\"><code data-backticks=\"1\" data-nodeid=\"7246\">\u4e25\u683c\u987a\u5e8f<\/code><\/strong><\/td>\n<td data-nodeid=\"7063\">\u4e25\u683c\u987a\u5e8f<\/td>\n<td data-nodeid=\"7064\">\u5f3a\u5236\u5728\u6574\u4e2a\u7247\u6bb5\u4e2d\u7edd\u5bf9\u4fdd\u6301\u81ea\u4e0a\u800c\u4e0b\u7684\u987a\u5e8f\uff0c\u65e0\u8bba\u751f\u547d\u7ebf\u662f\u5426\u72ec\u7acb\u3002<\/td>\n<\/tr>\n<tr data-nodeid=\"7065\">\n<td data-nodeid=\"7066\"><strong data-nodeid=\"7254\"><code data-backticks=\"1\" data-nodeid=\"7252\">\u4e34\u754c\u533a<\/code><\/strong><\/td>\n<td data-nodeid=\"7067\">\u4e34\u754c\u533a<\/td>\n<td data-nodeid=\"7068\">\u6807\u8bb0\u4e00\u4e2a\u539f\u5b50\u6267\u884c\u5757\u3002\u9632\u6b62\u5916\u90e8\u4ea4\u4e92\u8f68\u8ff9\u4ea4\u9519\u6216\u4e2d\u65ad\u5c01\u88c5\u7684\u64cd\u4f5c\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr data-nodeid=\"7069\"\/>\n<h2 data-nodeid=\"7070\">3. \u5b9e\u9645\u5b9e\u73b0\uff1a\u53ef\u6267\u884c\u5e8f\u5217\u6a21\u578b<\/h2>\n<h3 data-nodeid=\"7071\">\u573a\u666fA\uff1a\u8ba2\u5355\u7ed3\u8d26\u5b50\u7cfb\u7edf\uff08<code data-backticks=\"1\" data-nodeid=\"7259\">\u9009\u62e9<\/code>,\u00a0<code data-backticks=\"1\" data-nodeid=\"7261\">\u53ef\u9009<\/code>\uff0c\u4ee5\u53ca<code data-backticks=\"1\" data-nodeid=\"7263\">\u5faa\u73af<\/code>)<\/h3>\n<p data-nodeid=\"7072\">\u7ed3\u8d26\u5de5\u4f5c\u6d41\u9700\u8981\u8fed\u4ee3\u5904\u7406\u8d2d\u7269\u8f66\u3001\u6761\u4ef6\u652f\u4ed8\u8def\u7531\u4ee5\u53ca\u4e00\u4e2a\u53ef\u9009\u7684\u6536\u636e\u751f\u6210\u6b65\u9aa4\u3002\u4ee5\u4e0b\u53ef\u6267\u884c\u89c4\u8303\u5c55\u793a\u4e86\u5d4c\u5957\u548c\u987a\u5e8f\u7247\u6bb5\u5982\u4f55\u660e\u786e\u5730\u5efa\u6a21\u6b64\u884c\u4e3a\u3002<\/p>\n<p id=\"rNHvAdS\"><img alt=\"\" class=\"alignnone size-full wp-image-24712\" decoding=\"async\" height=\"571\" loading=\"lazy\" sizes=\"auto, (max-width: 566px) 100vw, 566px\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb8dbc8bb0.png\" srcset=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb8dbc8bb0.png 566w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb8dbc8bb0-297x300.png 297w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb8dbc8bb0-80x80.png 80w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb8dbc8bb0-150x150.png 150w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb8dbc8bb0-400x404.png 400w\" width=\"566\"\/><\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">PlantUML<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com#plantuml:TLJ1Zjem4Br7oZ-CzW9xMAIsDmxLKhgiaBejAhrLFGpE01QExTfZjkdNTvm4oDBT71BiUPvvRvw7-yWOEDMcBE91Muy1QuZS699tqAeBbGLhbgtvdjJ19OPrsiGcCjKmdZjRQTREee6bPGgeyWeM0NSrMOwt-RnikW0tynJPrHHk02FaHLb8ITPAUxGiyRw09ENWZ3aXEPWhv0gRdFqHcPwnQL7zxxwSFigohv7VSFUnpGDJq5O8I_HKRNmxFD7MAeiHl9l05-VyMSaKLi4fYb7R7MWH7oKJA65L5YO3Vy92H3wWsiCozqQYwxtpFkFd0eDVPG7oj3GkT8uKzBR99zRir26pUO7AvATGwUWDTh1KrnYQ32HRPR9N0cFQr9hx5es5OVMP6BNfl1Z1-mdCZ5XbKKJJGE1JueJ6D41_b4an1tsNHRwyZz8dmwBpCKdEASoKSabYdz2WLIJNOhiLXpByIchlZN33n7iNz5_w4T36xhAS99zDE5kPTqzdxou2-N9svdrmHwewR4MlvtYzcUkaifyht57RJ1Ff8cvfuqNE8jag_kVVYsHzknz2SE4D3uLfxLakoLTwxk5F9Ese1bQEuCC4llb-eYxMdBSsjCUZbekM7IaBvmU6dEOBljFlH3AW5QpGjsj5shzr0ttGbbjWZnlm6NIq6utXHZjTzuAKlub_\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>\u5728 VPasCode \u4e2d\u7f16\u8f91 PlantUML<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">PlantUML<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com#plantuml:TLDDRzCm6Bv7od-mUjbss2JWjWCQ6X_Y09eODyJ198PPpPTifrCv8TH2AzW7C25MDA5EOsoJsWYrj5sxxjSaSNhQNy29-v5MMmwMOZ_lw-VZzGfba33ND5I5Ph7bG09DG5dUG68bM9D7gi8m4rkyzorg7WUrNTxeyTwlgujIU53rUos_U-Htl_Bonx3-x-gY71T0ZTa4P8BwOLXgPm2aODMbJ5N43Gnhs84M0ndPBzp-4vHQmVw9X35YpC32FS_l_U3zBq6naM0UGOOsONvu3yw9ts7xU0MBTvCkO1bW2pCiJbSta9QrNJQ_aAv8RbALEN1h2GINPtpR6qce14S5lliXQjPu-JJg7_kT6gyK1jLp_hEkAePjE-052Bpp6K3exVYTCma3BrK5Y2zXCc6KGmI_pZzco5ndjfQD2KsXOlxBGCVKCQ24kQO9IJu68akF-SvefEuh4xCrc3UHnUOrIFJxY45iq0KfxlOI6BmhXvzEn-94Lk7ttp7VnDYexGMN1M6CmOGgcQX0nScKsdv_Vt1u41IBKQinAsaOW-00NRPX4_mMFIVGeh73jZMIDlPxd5gyEwfTd0XXazfxZaFi7D8bLaVNzxZUj7LNqn2bQ_0DIampA4hBaeBypjOrWgOR3IrzG8XDRiX9i3GTzj0cJz7c4Fu42IlqL5npu8uOhnrFX30PB_bRAKJLptwdEqh0TgOIa8ydyjhXt_UysucQ9-5UAzowQRGSWYqn1muYpv26iCDI958Moh5FRoGlPqKWnMF_3m00\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit PlantUML in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-plantuml\" data-nodeid=\"7073\"><code class=\"language-plantuml\" data-language=\"plantuml\" class=\"language-plantuml\">@startuml\r\nskinparam style strictuml\r\n\r\ntitle \u7ed3\u8d26\u5b50\u7cfb\u7edf\uff08\u6761\u4ef6\u4ea4\u4e92\u7247\u6bb5\uff09\r\n\r\nactor \"\u5ba2\u6237\" as Cust\r\nparticipant \"\u7ed3\u8d26\u63a7\u5236\u5668\" as Ctrl\r\nparticipant \"\u652f\u4ed8\u7f51\u5173\" as Gateway\r\n\r\nactivate Cust\r\nCust -&gt; Ctrl : initiateCheckout()\r\nactivate Ctrl\r\n\r\n' 1. \u5faa\u73af\u7247\u6bb5\uff1a\u5904\u7406\u8d2d\u7269\u8f66\u4e2d\u7684\u9879\u76ee\r\nloop [ \u5bf9\u8d2d\u7269\u8f66\u4e2d\u7684\u6bcf\u4e2a\u9879\u76ee ]\r\n    Ctrl -&gt; Ctrl : verifyItemStock()\r\n    Ctrl -&gt; Cust : displayItemSummary()\r\nend\r\n\r\nCust -&gt; Ctrl : submitPayment(cardDetails)\r\n\r\n' 2. \u9009\u62e9\u7247\u6bb5\uff1a\u4e92\u65a5\u7684\u652f\u4ed8\u8def\u5f84\r\nalt [ \u6761\u4ef6\uff1a\u8d26\u6237\u4f59\u989d\u5145\u8db3 ]\r\n    Ctrl -&gt; Gateway : authorizeTransaction()\r\n    activate Gateway\r\n    Gateway --&gt; Ctrl : transactionApproved\r\n    deactivate Gateway\r\n    Ctrl -&gt; Cust : displaySuccessPage()\r\nelse [ \u6761\u4ef6\uff1a\u4f59\u989d\u4e0d\u8db3 ]\r\n    Ctrl -&gt; Cust : displayPaymentError()\r\n    Ctrl -&gt; Cust : promptForNewPaymentMethod()\r\nend\r\n\r\n' 3. \u53ef\u9009\u7247\u6bb5\uff1a\u53ef\u9009\u7684\u884c\u4e3a\u8def\u5f84\r\nopt [ \u6761\u4ef6\uff1a\u5ba2\u6237\u8bf7\u6c42\u7eb8\u8d28\u6536\u636e ]\r\n    Ctrl -&gt; Ctrl : printPaperReceipt()\r\nend\r\n\r\ndeactivate Ctrl\r\ndeactivate Cust\r\n@enduml<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com#plantuml:TLDDRzCm6Bv7od-mUjbss2JWjWCQ6X_Y09eODyJ198PPpPTifrCv8TH2AzW7C25MDA5EOsoJsWYrj5sxxjSaSNhQNy29-v5MMmwMOZ_lw-VZzGfba33ND5I5Ph7bG09DG5dUG68bM9D7gi8m4rkyzorg7WUrNTxeyTwlgujIU53rUos_U-Htl_Bonx3-x-gY71T0ZTa4P8BwOLXgPm2aODMbJ5N43Gnhs84M0ndPBzp-4vHQmVw9X35YpC32FS_l_U3zBq6naM0UGOOsONvu3yw9ts7xU0MBTvCkO1bW2pCiJbSta9QrNJQ_aAv8RbALEN1h2GINPtpR6qce14S5lliXQjPu-JJg7_kT6gyK1jLp_hEkAePjE-052Bpp6K3exVYTCma3BrK5Y2zXCc6KGmI_pZzco5ndjfQD2KsXOlxBGCVKCQ24kQO9IJu68akF-SvefEuh4xCrc3UHnUOrIFJxY45iq0KfxlOI6BmhXvzEn-94Lk7ttp7VnDYexGMN1M6CmOGgcQX0nScKsdv_Vt1u41IBKQinAsaOW-00NRPX4_mMFIVGeh73jZMIDlPxd5gyEwfTd0XXazfxZaFi7D8bLaVNzxZUj7LNqn2bQ_0DIampA4hBaeBypjOrWgOR3IrzG8XDRiX9i3GTzj0cJz7c4Fu42IlqL5npu8uOhnrFX30PB_bRAKJLptwdEqh0TgOIa8ydyjhXt_UysucQ9-5UAzowQRGSWYqn1muYpv26iCDI958Moh5FRoGlPqKWnMF_3m00\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit PlantUML in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com#plantuml:TLJ1Zjem4Br7oZ-CzW9xMAIsDmxLKhgiaBejAhrLFGpE01QExTfZjkdNTvm4oDBT71BiUPvvRvw7-yWOEDMcBE91Muy1QuZS699tqAeBbGLhbgtvdjJ19OPrsiGcCjKmdZjRQTREee6bPGgeyWeM0NSrMOwt-RnikW0tynJPrHHk02FaHLb8ITPAUxGiyRw09ENWZ3aXEPWhv0gRdFqHcPwnQL7zxxwSFigohv7VSFUnpGDJq5O8I_HKRNmxFD7MAeiHl9l05-VyMSaKLi4fYb7R7MWH7oKJA65L5YO3Vy92H3wWsiCozqQYwxtpFkFd0eDVPG7oj3GkT8uKzBR99zRir26pUO7AvATGwUWDTh1KrnYQ32HRPR9N0cFQr9hx5es5OVMP6BNfl1Z1-mdCZ5XbKKJJGE1JueJ6D41_b4an1tsNHRwyZz8dmwBpCKdEASoKSabYdz2WLIJNOhiLXpByIchlZN33n7iNz5_w4T36xhAS99zDE5kPTqzdxou2-N9svdrmHwewR4MlvtYzcUkaifyht57RJ1Ff8cvfuqNE8jag_kVVYsHzknz2SE4D3uLfxLakoLTwxk5F9Ese1bQEuCC4llb-eYxMdBSsjCUZbekM7IaBvmU6dEOBljFlH3AW5QpGjsj5shzr0ttGbbjWZnlm6NIq6utXHZjTzuAKlub_\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>\u5728 VPasCode \u4e2d\u7f16\u8f91 PlantUML<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<h3 data-nodeid=\"7074\">\u573a\u666f B\uff1a\u5e76\u53d1\u5904\u7406\u67b6\u6784\uff08<code data-backticks=\"1\" data-nodeid=\"7267\">par<\/code>)<\/h3>\n<p data-nodeid=\"7075\">\u7ed3\u8d26\u540e\uff0c\u7cfb\u7edf\u5fc5\u987b\u5c06\u6570\u636e\u5e93\u5e93\u5b58\u66f4\u65b0\u4e0e\u7b2c\u4e09\u65b9\u7269\u6d41\u9884\u8ba2\u8fdb\u884c\u540c\u6b65\u3002\u7531\u4e8e\u8fd9\u4e9b\u64cd\u4f5c\u9664\u4e86\u521d\u59cb\u8ba2\u5355\u89e6\u53d1\u5916\u4e0d\u5171\u4eab\u4efb\u4f55\u516c\u5171\u8d44\u6e90\uff0c\u56e0\u6b64\u4f7f\u7528\u5e76\u884c\u7247\u6bb5\u6765\u6a21\u62df\u771f\u6b63\u7684\u5f02\u6b65\u6267\u884c\u3002<\/p>\n<p id=\"HlKffse\"><img alt=\"\" class=\"alignnone size-full wp-image-24713\" decoding=\"async\" height=\"334\" loading=\"lazy\" sizes=\"auto, (max-width: 514px) 100vw, 514px\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb8fd7f50b.png\" srcset=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb8fd7f50b.png 514w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb8fd7f50b-300x195.png 300w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb8fd7f50b-150x97.png 150w, https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2026\/05\/img_6a0fb8fd7f50b-400x260.png 400w\" width=\"514\"\/><\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">PlantUML<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com#plantuml:RLDDJyCm3BrFsd-mk6mxS81Z3mZj0ma9YQ713uWIqrbBayfn9_RlSThHbcqzj8q_dj-pdUSaXgMf_7II3XHgmwQ292UF-cQodMiw4H8rlOOZ1ebyWfV6VvFtbHvXljKixz6hNv2D5Oe1NjYKsRt8wOehPAas6dxtpWvv1B099GMy0vEW-xs8xwkkbsrGVxw8Uuib9Jsc7VAHR8VO6pEDJEre1FiwtHVkdyuMAC17U-WOHjvoj9WIXNBUofX1B_LFNW6R7xIDQ0pO66p3d7jYqYdOFSSGcmIoPpGkjNId4z1d1f-j3HwAKLE_QgVakeY1sU0lmA5hhEn4ENuqAfg4C6LkEQLNDsfGjWy0zsEXAQEiMq2Trog6R-8ANPVZy1OQ-eGN0XwBeSMmZ56NgBnKC0HeLRlNaXvNXfcGjsGFJNsbO3IrR1y0_Yces-JT6T7DHNSlrtzrYoiL8qGCBW_pnkmDspqTSHMhsgEWQ_SWani1_QtEiyBevVW5\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>\u5728 VPasCode \u4e2d\u7f16\u8f91 PlantUML<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">PlantUML<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com#plantuml:RL9DIrj15Dq7yXy6DucBB7JPHH5I2uAWabympDp68I_p7ZEJW4j5gB76qeQKqdPZg6rT61HKQ0ZqppWJNVaNlFCc7w-9R_7Ul3ldddlElNTD6wfCenxbSxecP48LhHDjzYB0jn8iNELpHXWCsK77Ndwrr-UZmQ-duP7zU_TmTd8_-7a_-3nglNVzswTXowEHnWWc4YeDMNhezsox6vBiiEiwfqk4Qh8kgqB273OKSDqhr-xZEGLko2P84wkzEUoeTU5kzzsFjZq-Iu6RSLLelDTU0cL6DAc1QPtm9QNNumXvHQAOrROK1_KsLjigPg2raDNYiiylaE1kukkRQ_t6NmpQZv_iyC1Tefz_epyVKbNv7C6dG4A8h21-RENxZVjo5Qvd2gQMK0G7tc2cOb3BJWED2ID0Umq-PUeYqmGVdn6KieQqPtcJ4efObcFvJgWwy933uIKsY3JCgLz5zQ6vZxr3dDwy-ccVVKMsY-KYA5Eb1AXjmMgDP45zPZ8-FYFuJtsI9bV6ZBne56MuazKDlhpW8CC8alk1lJ1VgjYkQ48vhYSH6E3fhBsu3D5aFTQG1dVz6G00\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit PlantUML in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-plantuml\" data-nodeid=\"7076\"><code class=\"language-plantuml\" data-language=\"plantuml\" class=\"language-plantuml\">@startuml\r\nskinparam style strictuml\r\n\r\ntitle \u5e93\u5b58\u5c65\u7ea6\uff08\u5e76\u884c\u4ea4\u4e92\u7247\u6bb5\uff09\r\n\r\nparticipant \"\u8ba2\u5355\u5c65\u7ea6\u5f15\u64ce\" as Engine\r\nparticipant \"\u5e93\u5b58\u6570\u636e\u5e93\" as Inventory\r\nparticipant \"\u7269\u6d41\u670d\u52a1\" as Logistics\r\n\r\nactivate Engine\r\nEngine -&gt; Engine : lockOrderForProcessing()\r\n\r\n' \u5e76\u884c\u7247\u6bb5\uff1a\u6267\u884c\u5e76\u53d1\u5f02\u6b65\u7ebf\u7a0b\r\npar\r\n    ' \u7ebf\u7a0b 1\uff1a\u5e93\u5b58\u66f4\u65b0\r\n    Engine -&gt; Inventory : deductStockQuantities()\r\n    activate Inventory\r\n    Inventory --&gt; Engine : stockDeductionConfirmed\r\n    deactivate Inventory\r\nelse\r\n    ' \u7ebf\u7a0b 2\uff1a\u7269\u6d41\u9884\u8ba2\r\n    Engine -&gt; Logistics : scheduleCarrierPickup()\r\n    activate Logistics\r\n    Logistics --&gt; Engine : pickupScheduled(trackingId)\r\n    deactivate Logistics\r\nend\r\n\r\nEngine -&gt; Engine : archiveCompletedOrder()\r\ndeactivate Engine\r\n@enduml<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com#plantuml:RL9DIrj15Dq7yXy6DucBB7JPHH5I2uAWabympDp68I_p7ZEJW4j5gB76qeQKqdPZg6rT61HKQ0ZqppWJNVaNlFCc7w-9R_7Ul3ldddlElNTD6wfCenxbSxecP48LhHDjzYB0jn8iNELpHXWCsK77Ndwrr-UZmQ-duP7zU_TmTd8_-7a_-3nglNVzswTXowEHnWWc4YeDMNhezsox6vBiiEiwfqk4Qh8kgqB273OKSDqhr-xZEGLko2P84wkzEUoeTU5kzzsFjZq-Iu6RSLLelDTU0cL6DAc1QPtm9QNNumXvHQAOrROK1_KsLjigPg2raDNYiiylaE1kukkRQ_t6NmpQZv_iyC1Tefz_epyVKbNv7C6dG4A8h21-RENxZVjo5Qvd2gQMK0G7tc2cOb3BJWED2ID0Umq-PUeYqmGVdn6KieQqPtcJ4efObcFvJgWwy933uIKsY3JCgLz5zQ6vZxr3dDwy-ccVVKMsY-KYA5Eb1AXjmMgDP45zPZ8-FYFuJtsI9bV6ZBne56MuazKDlhpW8CC8alk1lJ1VgjYkQ48vhYSH6E3fhBsu3D5aFTQG1dVz6G00\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit PlantUML in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com#plantuml:RLDDJyCm3BrFsd-mk6mxS81Z3mZj0ma9YQ713uWIqrbBayfn9_RlSThHbcqzj8q_dj-pdUSaXgMf_7II3XHgmwQ292UF-cQodMiw4H8rlOOZ1ebyWfV6VvFtbHvXljKixz6hNv2D5Oe1NjYKsRt8wOehPAas6dxtpWvv1B099GMy0vEW-xs8xwkkbsrGVxw8Uuib9Jsc7VAHR8VO6pEDJEre1FiwtHVkdyuMAC17U-WOHjvoj9WIXNBUofX1B_LFNW6R7xIDQ0pO66p3d7jYqYdOFSSGcmIoPpGkjNId4z1d1f-j3HwAKLE_QgVakeY1sU0lmA5hhEn4ENuqAfg4C6LkEQLNDsfGjWy0zsEXAQEiMq2Trog6R-8ANPVZy1OQ-eGN0XwBeSMmZ56NgBnKC0HeLRlNaXvNXfcGjsGFJNsbO3IrR1y0_Yces-JT6T7DHNSlrtzrYoiL8qGCBW_pnkmDspqTSHMhsgEWQ_SWani1_QtEiyBevVW5\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>\u5728 VPasCode \u4e2d\u7f16\u8f91 PlantUML<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<hr data-nodeid=\"7077\"\/>\n<h2 data-nodeid=\"7078\">4. \u53ef\u6269\u5c55\u67b6\u6784\u7684\u9ad8\u7ea7\u62d3\u6251\u7ed3\u6784<\/h2>\n<p data-nodeid=\"7079\">\u968f\u7740\u7cfb\u7edf\u590d\u6742\u6027\u7684\u589e\u52a0\uff0c\u4ea4\u4e92\u7247\u6bb5\u80fd\u591f\u5728\u4e0d\u4f7f\u4e3b\u5e8f\u5217\u56fe\u81c3\u80bf\u7684\u60c5\u51b5\u4e0b\u5b9e\u73b0\u6a21\u5757\u5316\u548c\u5f02\u5e38\u5904\u7406\u3002<\/p>\n<h3 data-nodeid=\"7080\">\u4ea4\u4e92\u5b9e\u4f8b\/\u5f15\u7528\uff08<code data-backticks=\"1\" data-nodeid=\"7273\">ref<\/code>)<\/h3>\n<p data-nodeid=\"7081\">\u5927\u89c4\u6a21\u5de5\u4f5c\u6d41\u88ab\u5206\u5272\u4e3a\u805a\u7126\u7684\u5b50\u56fe\u3002\u4e00\u4e2a<strong data-nodeid=\"7281\"><code data-backticks=\"1\" data-nodeid=\"7277\">ref<\/code>\u7247\u6bb5<\/strong>\u4f5c\u4e3a\u6a21\u5757\u5316\u7684\u5360\u4f4d\u7b26\uff0c\u8de8\u8d8a\u76f8\u5173\u751f\u547d\u7ebf\u5e76\u6807\u6ce8\u5916\u90e8\u56fe\u7684\u540d\u79f0\u3002\u8fd9\u4fc3\u8fdb\u4e86\u590d\u7528\u6027\uff0c\u5f3a\u5236\u6267\u884c\u5355\u4e00\u804c\u8d23\u5efa\u6a21\uff0c\u5e76\u4f7f\u4e3b\u56fe\u4fdd\u6301\u5728\u53ef\u8bfb\u8303\u56f4\u5185\u3002<\/p>\n<h3 data-nodeid=\"7082\">\u4e2d\u65ad\u7247\u6bb5\uff08<code data-backticks=\"1\" data-nodeid=\"7283\">break<\/code>)<\/h3>\n<p data-nodeid=\"7083\">\u7834\u574f\u6807\u51c6\u6267\u884c\u7684\u5f02\u5e38\u6216\u9519\u8bef\u6d41\u7a0b\u901a\u8fc7\u4f7f\u7528<strong data-nodeid=\"7293\"><code data-backticks=\"1\" data-nodeid=\"7287\">break<\/code>\u7247\u6bb5\u6765\u5efa\u6a21<\/strong>\u5f53\u4e00\u4e2a\u4e2d\u65ad\u7247\u6bb5\u7684\u6761\u4ef6\u4e3a\u771f\u65f6\uff0c\u5176\u5185\u90e8\u64cd\u4f5c\u5c06\u6267\u884c\uff0c\u5305\u542b\u8be5\u7247\u6bb5\u7684\u4ea4\u4e92\u5176\u4f59\u90e8\u5206\u5c06\u7acb\u5373\u88ab\u653e\u5f03\uff0c\u63a7\u5236\u6743\u8fd4\u56de\u5230\u7236\u4f5c\u7528\u57df\u3002\u8fd9\u5bf9\u4e8e\u5efa\u6a21\u4e8b\u52a1\u56de\u6eda\u3001\u8d85\u65f6\u5904\u7406\u548c\u7cfb\u7edf\u7ea7\u6545\u969c\u6062\u590d\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<hr data-nodeid=\"7084\"\/>\n<h2 data-nodeid=\"7085\">5. \u5de5\u7a0b\u89c4\u8303\u4e0e\u4f18\u5316\u7b56\u7565<\/h2>\n<p data-nodeid=\"7086\">\u4e3a\u4e86\u6700\u5927\u5316\u56fe\u793a\u7684\u6e05\u6670\u5ea6\u3001\u53ef\u7ef4\u62a4\u6027\u548c\u5de5\u5177\u517c\u5bb9\u6027\uff0c\u5f3a\u5236\u6267\u884c\u4ee5\u4e0b\u67b6\u6784\u89c4\u8303\uff1a<\/p>\n<ol data-nodeid=\"7087\">\n<li data-nodeid=\"7088\">\n<p data-nodeid=\"7089\"><strong data-nodeid=\"7310\">\u5728\u00a0\u4e2d\u5f3a\u5236\u6267\u884c\u4e92\u65a5\u5b88\u536b<code data-backticks=\"1\" data-nodeid=\"7300\">alt<\/code>\u00a0\u6846\u67b6<\/strong><br \/>\n\u5b88\u536b\u6761\u4ef6\u5fc5\u987b\u5728\u903b\u8f91\u4e0a\u4e92\u4e0d\u91cd\u53e0\uff08\u4f8b\u5982\uff0c\u00a0<code data-backticks=\"1\" data-nodeid=\"7306\">[\u4f59\u989d &gt;= \u603b\u989d]<\/code>\u00a0\u4e0e\u00a0<code data-backticks=\"1\" data-nodeid=\"7308\">[\u4f59\u989d &lt; \u603b\u989d]<\/code>\uff09\u3002\u91cd\u53e0\u7684\u6761\u4ef6\u4f1a\u5f15\u5165\u8fd0\u884c\u65f6\u6b67\u4e49\uff0c\u5e76\u8fdd\u53cdUML\u6267\u884c\u8bed\u4e49\u3002<\/p>\n<\/li>\n<li data-nodeid=\"7090\">\n<p data-nodeid=\"7091\"><strong data-nodeid=\"7319\">\u9650\u5236\u7247\u6bb5\u5d4c\u5957\u6df1\u5ea6<\/strong><br \/>\n\u5c3d\u7ba1UML\u5141\u8bb8\u65e0\u9650\u5d4c\u5957\uff0c\u4f46\u5b9e\u9645\u53ef\u8bfb\u6027\u5728\u8d85\u8fc7\u4e24\u5c42\u540e\u4f1a\u4e0b\u964d\u3002\u5982\u679c\u903b\u8f91\u9700\u8981\u66f4\u6df1\u7684\u5d4c\u5957\uff0c\u8bf7\u5c06\u5b50\u6d41\u7a0b\u63d0\u53d6\u5230\u5355\u72ec\u7684\u56fe\u8868\u4e2d\uff0c\u5e76\u901a\u8fc7\u00a0<code data-backticks=\"1\" data-nodeid=\"7317\">ref<\/code>.<\/p>\n<\/li>\n<li data-nodeid=\"7092\">\n<p data-nodeid=\"7093\"><strong data-nodeid=\"7326\">\u5c06\u751f\u547d\u7ebf\u4e0e\u7247\u6bb5\u8fb9\u754c\u5bf9\u9f50<\/strong><br \/>\n\u4ec5\u5305\u542b\u5728\u7247\u6bb5\u5185\u6d88\u606f\u4e2d\u79ef\u6781\u53c2\u4e0e\u7684\u751f\u547d\u7ebf\u3002\u5916\u90e8\u6216\u88ab\u52a8\u7684\u751f\u547d\u7ebf\u5e94\u4fdd\u7559\u5728\u6846\u67b6\u4e4b\u5916\uff0c\u4ee5\u51cf\u5c11\u89c6\u89c9\u6742\u4e71\u5e76\u9632\u6b62\u5bf9\u4f5c\u7528\u57df\u7684\u8bef\u89e3\u3002<\/p>\n<\/li>\n<li data-nodeid=\"7094\">\n<p data-nodeid=\"7095\"><strong data-nodeid=\"7332\">\u4f18\u5316\u5de5\u5177\u4e0e\u5e03\u5c40\u5b9e\u8df5<\/strong><\/p>\n<ul data-nodeid=\"7096\">\n<li data-nodeid=\"7097\">\n<p data-nodeid=\"7098\"><strong data-nodeid=\"7341\">\u663e\u5f0f\u6fc0\u6d3b\u63a7\u5236\uff1a<\/strong>\u00a0\u5c06\u6d88\u606f\u4e0e\u00a0<code data-backticks=\"1\" data-nodeid=\"7337\">activate<\/code>\/<code data-backticks=\"1\" data-nodeid=\"7339\">deactivate<\/code>\u00a0\u547d\u4ee4\uff0c\u4ee5\u6e05\u6670\u5730\u8ffd\u8e2a\u6761\u4ef6\u548c\u5e76\u884c\u5206\u652f\u4e2d\u7684\u7ebf\u7a0b\u6240\u6709\u6743\u3002<\/p>\n<\/li>\n<li data-nodeid=\"7099\">\n<p data-nodeid=\"7100\"><strong data-nodeid=\"7346\">\u7b80\u6d01\u7684\u5b88\u536b\u8bed\u6cd5\uff1a<\/strong>\u00a0\u4fdd\u6301\u62ec\u53f7\u5185\u6761\u4ef6\u7b80\u77ed\u4e14\u5177\u6709\u58f0\u660e\u6027\u3002\u8fc7\u957f\u7684\u8c13\u8bcd\u4f1a\u626d\u66f2\u6846\u67b6\u51e0\u4f55\u5f62\u72b6\u5e76\u7834\u574f\u81ea\u52a8\u5e03\u5c40\u5f15\u64ce\u3002<\/p>\n<\/li>\n<li data-nodeid=\"7101\">\n<p data-nodeid=\"7102\"><strong data-nodeid=\"7353\">\u7ed3\u6784\u5316\u6807\u7b7e\u683c\u5f0f\uff1a<\/strong>\u00a0\u4f7f\u7528\u00a0<code data-backticks=\"1\" data-nodeid=\"7351\">n<\/code>\u00a0\u5728\u957f\u6807\u9898\u6216\u6ce8\u91ca\u4e2d\u6362\u884c\uff0c\u4ee5\u5f3a\u5236\u5782\u76f4\u5806\u53e0\u5e76\u4fdd\u6301\u56fe\u8868\u7684\u7eb5\u6a2a\u6bd4\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<hr data-nodeid=\"7103\"\/>\n<h2 data-nodeid=\"7104\">\u7ed3\u8bba<\/h2>\n<p class=\"\" data-nodeid=\"7105\">\u4ea4\u4e92\u7247\u6bb5\u5c06UML\u5e8f\u5217\u56fe\u4ece\u9759\u6001\u6d88\u606f\u65e5\u5fd7\u8f6c\u53d8\u4e3a\u52a8\u6001\u3001\u53ef\u6267\u884c\u7684\u884c\u4e3a\u89c4\u8303\u3002\u901a\u8fc7\u638c\u63e1\u7ec4\u5408\u7247\u6bb5\u3001\u64cd\u4f5c\u6570\u5b88\u536b\u548c\u6267\u884c\u64cd\u4f5c\u7b26\uff0c\u67b6\u6784\u5e08\u80fd\u591f\u51c6\u786e\u5efa\u6a21\u73b0\u4ee3\u5206\u5e03\u5f0f\u7cfb\u7edf\u7684\u6761\u4ef6\u6027\u3001\u5e76\u53d1\u6027\u548c\u8fed\u4ee3\u6027\u73b0\u5b9e\u3002\u9ad8\u7ea7\u62d3\u6251\u7ed3\u6784\u7684\u96c6\u6210\uff0c\u5982\u00a0<code data-backticks=\"1\" data-nodeid=\"7356\">ref<\/code>\u548c<code data-backticks=\"1\" 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