{"id":379,"date":"2026-03-27T02:39:54","date_gmt":"2026-03-27T02:39:54","guid":{"rendered":"https:\/\/www.go-minder.com\/cn\/how-to-read-sequence-diagrams-messages-lifelines\/"},"modified":"2026-03-27T02:39:54","modified_gmt":"2026-03-27T02:39:54","slug":"how-to-read-sequence-diagrams-messages-lifelines","status":"publish","type":"post","link":"https:\/\/www.go-minder.com\/cn\/how-to-read-sequence-diagrams-messages-lifelines\/","title":{"rendered":"UML\u6307\u5357 &#8211; \u5982\u4f55\u9605\u8bfb\u5e8f\u5217\u56fe\uff1a\u6d88\u606f\u3001\u751f\u547d\u7ebf\u548c\u63a7\u5236\u6d41"},"content":{"rendered":"<p>\u7406\u89e3\u7cfb\u7edf\u4ea4\u4e92\u9700\u8981\u4e00\u79cd\u6e05\u6670\u7684\u89c6\u89c9\u8bed\u8a00\u3002\u5728\u7edf\u4e00\u5efa\u6a21\u8bed\u8a00\uff08UML\uff09\u7684\u4e16\u754c\u4e2d\uff0c\u5e8f\u5217\u56fe\u662f\u4e00\u79cd\u5173\u952e\u5de5\u5177\uff0c\u7528\u4e8e\u63cf\u7ed8\u5bf9\u8c61\u6216\u7ec4\u4ef6\u968f\u65f6\u95f4\u7684\u901a\u4fe1\u65b9\u5f0f\u3002\u672c\u6307\u5357\u6df1\u5165\u8bb2\u89e3\u5982\u4f55\u9605\u8bfb\u5e8f\u5217\u56fe\uff0c\u91cd\u70b9\u4ecb\u7ecd\u6d88\u606f\u3001\u751f\u547d\u7ebf\u548c\u63a7\u5236\u6d41\u3002\u638c\u63e1\u8fd9\u4e9b\u5143\u7d20\u540e\uff0c\u6280\u672f\u56e2\u961f\u80fd\u591f\u66f4\u6709\u6548\u5730\u8bbe\u8ba1\u7a33\u5065\u7684\u7cfb\u7edf\uff0c\u5e76\u8bb0\u5f55\u590d\u6742\u7684\u903b\u8f91\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Child's drawing style infographic explaining how to read UML sequence diagrams, featuring colorful hand-drawn lifelines, message arrows, activation bars, and combined fragments like alt and loop, with playful crayon textures and simple step-by-step visual guide for understanding messages, control flow, and system interactions\" decoding=\"async\" src=\"https:\/\/www.go-minder.com\/wp-content\/uploads\/2026\/03\/sequence-diagram-guide-infographic-childrens-style.jpg\"\/><\/figure>\n<\/div>\n<h2>\ud83d\udd0d \u4ec0\u4e48\u662f\u5e8f\u5217\u56fe\uff1f<\/h2>\n<p>\u5e8f\u5217\u56fe\u662f\u4e00\u79cd\u4ea4\u4e92\u56fe\uff0c\u7528\u4e8e\u5c55\u793a\u8fdb\u7a0b\u4e4b\u95f4\u5982\u4f55\u76f8\u4e92\u64cd\u4f5c\u4ee5\u53ca\u64cd\u4f5c\u7684\u987a\u5e8f\u3002\u5176\u4e3b\u8981\u76ee\u7684\u662f\u53ef\u89c6\u5316\u7cfb\u7edf\u5404\u90e8\u5206\u4e4b\u95f4\u6570\u636e\u548c\u63a7\u5236\u7684\u6d41\u52a8\u3002\u4e0e\u5173\u6ce8\u7ed3\u6784\u7684\u7c7b\u56fe\u4e0d\u540c\uff0c\u5e8f\u5217\u56fe\u5173\u6ce8\u7684\u662f\u884c\u4e3a\u548c\u65f6\u95f4\u987a\u5e8f\u3002<\/p>\n<p>\u5728\u5206\u6790\u5e8f\u5217\u56fe\u65f6\uff0c\u4f60\u5b9e\u9645\u4e0a\u662f\u5728\u9605\u8bfb\u4e00\u6bb5\u8f6f\u4ef6\u6267\u884c\u7684\u811a\u672c\u3002\u5b83\u5c55\u793a\u4e86\uff1a<\/p>\n<ul>\n<li>\u53c2\u4e0e\u4ea4\u4e92\u7684\u5404\u65b9\u3002<\/li>\n<li>\u5b83\u4eec\u4e4b\u95f4\u4f20\u9012\u7684\u6d88\u606f\u3002<\/li>\n<li>\u8fd9\u4e9b\u6d88\u606f\u53d1\u751f\u7684\u987a\u5e8f\u3002<\/li>\n<li>\u4ea4\u4e92\u8fc7\u7a0b\u4e2d\u5404\u65b9\u7684\u72b6\u6001\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u79cd\u53ef\u89c6\u5316\u6709\u52a9\u4e8e\u5f00\u53d1\u4eba\u5458\u5728\u7f16\u5199\u4ee3\u7801\u4e4b\u524d\u8bc6\u522b\u74f6\u9888\u3001\u903b\u8f91\u9519\u8bef\u548c\u4e0d\u660e\u786e\u7684\u4f9d\u8d56\u5173\u7cfb\u3002\u5b83\u5145\u5f53\u4e86\u7cfb\u7edf\u4e0d\u540c\u90e8\u5206\u4e4b\u95f4\u7684\u5951\u7ea6\u3002<\/p>\n<h2>\ud83c\udfd7\ufe0f \u6838\u5fc3\u7ec4\u4ef6\uff1a\u751f\u547d\u7ebf\u548c\u53c2\u4e0e\u8005<\/h2>\n<p>\u4efb\u4f55\u5e8f\u5217\u56fe\u7684\u57fa\u7840\u90fd\u5728\u4e8e\u5176\u5782\u76f4\u7ebf\u6761\u3002\u8fd9\u4e9b\u7ebf\u6761\u4ee3\u8868\u4e86\u53c2\u4e0e\u4ea4\u4e92\u7684\u5b9e\u4f53\u3002\u7406\u89e3\u751f\u547d\u7ebf\u662f\u51c6\u786e\u89e3\u8bfb\u5e8f\u5217\u56fe\u7684\u7b2c\u4e00\u6b65\u3002<\/p>\n<h3>1. \u751f\u547d\u7ebf<\/h3>\n<p>\u751f\u547d\u7ebf\u4ee3\u8868\u4ea4\u4e92\u4e2d\u7684\u4e00\u4e2a\u53c2\u4e0e\u8005\u3002\u5b83\u662f\u4e00\u6761\u4ece\u56fe\u7684\u9876\u90e8\u5ef6\u4f38\u5230\u5e95\u90e8\u7684\u5782\u76f4\u865a\u7ebf\u3002\u8fd9\u6761\u7ebf\u8868\u793a\u5bf9\u8c61\u6216\u53c2\u4e0e\u8005\u5728\u6574\u4e2a\u5e8f\u5217\u671f\u95f4\u7684\u5b58\u5728\u3002\u53ef\u4ee5\u5c06\u5176\u89c6\u4e3a\u8be5\u7279\u5b9a\u5b9e\u4f53\u7684\u65f6\u95f4\u7ebf\u3002<\/p>\n<ul>\n<li><strong>\u9876\u90e8\u8fb9\u7f18\uff1a<\/strong> \u8868\u793a\u53c2\u4e0e\u8005\u7684\u521b\u5efa\u6216\u5230\u8fbe\u3002<\/li>\n<li><strong> \u5e95\u90e8\u8fb9\u7f18\uff1a<\/strong> \u8868\u793a\u53c2\u4e0e\u8005\u7684\u9500\u6bc1\u6216\u7ed3\u675f\u3002<\/li>\n<li><strong> \u6807\u7b7e\uff1a<\/strong> \u901a\u5e38\u653e\u5728\u7ebf\u6761\u7684\u9876\u90e8\uff0c\u7528\u4e8e\u6807\u8bc6\u5bf9\u8c61\uff0c\u4f8b\u5982 <code>UserInterface<\/code>, <code>Database<\/code>\uff0c\u6216 <code>PaymentGateway<\/code>.<\/li>\n<\/ul>\n<h3>2. \u53c2\u4e0e\u8005\u548c\u5bf9\u8c61<\/h3>\n<p>\u53c2\u4e0e\u8005\u53ef\u4ee5\u662f\u4eba\u7c7b\u89d2\u8272\u6216\u8f6f\u4ef6\u7ec4\u4ef6\u3002\u89d2\u8272\u901a\u5e38\u7528\u5c0f\u4eba\u56fe\u6807\u8868\u793a\uff0c\u800c\u5bf9\u8c61\u5219\u7528\u5e26\u4e0b\u5212\u7ebf\u7684\u5bf9\u8c61\u540d\u79f0\u7684\u77e9\u5f62\u8868\u793a\u3002<\/p>\n<p>\u5e38\u89c1\u7684\u53c2\u4e0e\u8005\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u8fb9\u754c\u5bf9\u8c61\uff1a<\/strong> \u4e0e\u7528\u6237\u4ea4\u4e92\u7684\u63a5\u53e3\u6216\u5c4f\u5e55\u3002<\/li>\n<li><strong> \u63a7\u5236\u5bf9\u8c61\uff1a<\/strong> \u534f\u8c03\u64cd\u4f5c\u7684\u903b\u8f91\u5904\u7406\u5668\u3002<\/li>\n<li><strong> \u5b9e\u4f53\u5bf9\u8c61\uff1a<\/strong> \u6570\u636e\u5b58\u50a8\u6216\u4e1a\u52a1\u903b\u8f91\u4ed3\u5e93\u3002<\/li>\n<li><strong> \u5916\u90e8\u7cfb\u7edf\uff1a<\/strong> \u7b2c\u4e09\u65b9 API \u6216\u670d\u52a1\u3002<\/li>\n<\/ul>\n<h2>\u2709\ufe0f \u7406\u89e3\u6d88\u606f\u4e0e\u901a\u4fe1<\/h2>\n<p>\u6d88\u606f\u662f\u8fde\u63a5\u751f\u547d\u7ebf\u7684\u6c34\u5e73\u7bad\u5934\u3002\u5b83\u4eec\u8868\u793a\u4e00\u4e2a\u4fe1\u53f7\u6b63\u4ece\u4e00\u4e2a\u53c2\u4e0e\u8005\u53d1\u9001\u5230\u53e6\u4e00\u4e2a\u53c2\u4e0e\u8005\u3002\u9605\u8bfb\u8fd9\u4e9b\u7bad\u5934\u7684\u65b9\u5411\u548c\u6837\u5f0f\u5bf9\u4e8e\u7406\u89e3\u63a7\u5236\u6d41\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h3>1. \u65b9\u5411\u4e0e\u7c7b\u578b<\/h3>\n<p>\u7bad\u5934\u4ece\u53d1\u9001\u65b9\u6307\u5411\u63a5\u6536\u65b9\u3002\u7bad\u5934\u7684\u6837\u5f0f\u8868\u793a\u6d88\u606f\u7684\u6027\u8d28\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u7bad\u5934\u6837\u5f0f<\/th>\n<th>\u7c7b\u578b<\/th>\n<th>\u884c\u4e3a<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5b9e\u7ebf\u5e26\u5b9e\u5fc3\u7bad\u5934<\/td>\n<td>\u540c\u6b65\u8c03\u7528<\/td>\n<td>\u53d1\u9001\u65b9\u4f1a\u7b49\u5f85\u63a5\u6536\u65b9\u5b8c\u6210\u5904\u7406\u540e\u624d\u7ee7\u7eed\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u5b9e\u7ebf\u5e26\u7a7a\u5fc3\u7bad\u5934<\/td>\n<td>\u5f02\u6b65\u6d88\u606f<\/td>\n<td>\u53d1\u9001\u65b9\u53d1\u9001\u6d88\u606f\u540e\u7acb\u5373\u7ee7\u7eed\uff0c\u65e0\u9700\u7b49\u5f85\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u865a\u7ebf\u5e26\u7a7a\u5fc3\u7bad\u5934<\/td>\n<td>\u8fd4\u56de\u6d88\u606f<\/td>\n<td>\u63a5\u6536\u65b9\u5c06\u54cd\u5e94\u53d1\u9001\u56de\u53d1\u9001\u65b9\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u8d77\u59cb\u5904\u5e26\u5706\u5708\u7684\u7ebf<\/td>\n<td>\u521b\u5efa\u6d88\u606f<\/td>\n<td>\u8868\u793a\u4e00\u4e2a\u65b0\u5bf9\u8c61\u7684\u5b9e\u4f8b\u5316\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u672b\u7aef\u5e26\u2018X\u2019\u7684\u7ebf<\/td>\n<td>\u9500\u6bc1\u6d88\u606f<\/td>\n<td>\u8868\u793a\u4e00\u4e2a\u5bf9\u8c61\u7684\u7ec8\u6b62\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>2. \u6d88\u606f\u8be6\u60c5<\/h3>\n<p>\u6bcf\u6761\u6d88\u606f\u6700\u597d\u90fd\u5305\u542b\u4e00\u4e2a\u6807\u7b7e\uff0c\u7528\u4e8e\u63cf\u8ff0\u8be5\u64cd\u4f5c\u3002\u8fd9\u53ef\u80fd\u662f\u4e00\u4e2a\u65b9\u6cd5\u8c03\u7528\u3001\u4e00\u4e2a\u67e5\u8be2\uff0c\u6216\u4e00\u4e2a\u4e8b\u4ef6\u3002\u4f8b\u5982\uff0c<code>login(username, password)<\/code> \u6216 <code>fetchData()<\/code>.<\/p>\n<p>\u9605\u8bfb\u56fe\u8868\u65f6\uff0c\u4ece\u4e0a\u5230\u4e0b\u8ffd\u8e2a\u6d88\u606f\u3002\u8fd9\u8868\u793a\u6267\u884c\u7684\u65f6\u95f4\u987a\u5e8f\u3002\u5982\u679c\u591a\u6761\u6d88\u606f\u6765\u81ea\u540c\u4e00\u6761\u751f\u547d\u7ebf\uff0c\u5219\u6309\u987a\u5e8f\u5904\u7406\u3002<\/p>\n<h2>\u23f1\ufe0f \u6fc0\u6d3b\u6761\u4e0e\u63a7\u5236\u6d41<\/h2>\n<p>\u6fc0\u6d3b\u6761\uff0c\u4e5f\u79f0\u4e3a\u6267\u884c\u53d1\u751f\uff0c\u662f\u653e\u7f6e\u5728\u751f\u547d\u7ebf\u4e0a\u7684\u7ec6\u957f\u77e9\u5f62\u3002\u5b83\u4eec\u8868\u793a\u5bf9\u8c61\u6b63\u5728\u6267\u884c\u67d0\u4e2a\u64cd\u4f5c\u6216\u5904\u4e8e\u6d3b\u8dc3\u6267\u884c\u72b6\u6001\u7684\u65f6\u95f4\u6bb5\u3002<\/p>\n<h3>1. \u89e3\u8bfb\u6fc0\u6d3b<\/h3>\n<ul>\n<li><strong>\u8d77\u59cb\u70b9\uff1a<\/strong> \u77e9\u5f62\u7684\u9876\u90e8\u8868\u793a\u5bf9\u8c61\u63a5\u6536\u5230\u6d88\u606f\u6216\u5f00\u59cb\u6267\u884c\u64cd\u4f5c\u7684\u65f6\u523b\u3002<\/li>\n<li><strong>\u7ed3\u675f\u70b9\uff1a<\/strong> \u5e95\u90e8\u8868\u793a\u64cd\u4f5c\u5b8c\u6210\u6216\u53d1\u9001\u8fd4\u56de\u6d88\u606f\u7684\u65f6\u523b\u3002<\/li>\n<li><strong>\u6301\u7eed\u65f6\u95f4\uff1a<\/strong> \u6761\u5f62\u7684\u957f\u5ea6\u8868\u793a\u6267\u884c\u6240\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u4e0e\u5176\u4ed6\u6761\u5f62\u76f8\u6bd4\u3002<\/li>\n<\/ul>\n<p>\u6fc0\u6d3b\u6761\u6709\u52a9\u4e8e\u53ef\u89c6\u5316\u5e76\u53d1\u6027\u3002\u5982\u679c\u4e24\u6761\u6fc0\u6d3b\u6761\u5728\u4e0d\u540c\u7684\u751f\u547d\u7ebf\u4e0a\u91cd\u53e0\uff0c\u8868\u793a\u8fd9\u4e9b\u64cd\u4f5c\u6b63\u5728\u540c\u65f6\u53d1\u751f\u3002\u8fd9\u5bf9\u4e8e\u7406\u89e3\u6027\u80fd\u548c\u9501\u673a\u5236\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h3>2. \u63a7\u5236\u6d41\u903b\u8f91<\/h3>\n<p>\u63a7\u5236\u6d41\u63cf\u8ff0\u4e86\u56fe\u8868\u4e2d\u7684\u51b3\u7b56\u8def\u5f84\u3002\u5b83\u4e0d\u4ec5\u4ec5\u662f\u5173\u4e8e\u8c01\u8c03\u7528\u8c01\uff0c\u8fd8\u5305\u62ec\u63a7\u5236\u6267\u884c\u987a\u5e8f\u7684\u903b\u8f91\u3002<\/p>\n<ul>\n<li><strong>\u6761\u4ef6\u5206\u652f\uff1a<\/strong> \u67d0\u4e9b\u8def\u5f84\u4ec5\u5728\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u65f6\u624d\u5b58\u5728\u3002<\/li>\n<li><strong>\u5faa\u73af\uff1a<\/strong> \u67d0\u4e9b\u64cd\u4f5c\u4f1a\u91cd\u590d\u6267\u884c\uff0c\u76f4\u5230\u6761\u4ef6\u53d1\u751f\u53d8\u5316\u3002<\/li>\n<li><strong>\u5f02\u5e38\uff1a<\/strong> \u504f\u79bb\u6807\u51c6\u6d41\u7a0b\u7684\u9519\u8bef\u5904\u7406\u8def\u5f84\u3002<\/li>\n<\/ul>\n<p>\u9605\u8bfb\u63a7\u5236\u6d41\u9700\u8981\u8d85\u8d8a\u4e3b\u6d41\u7a0b\u3002\u4f60\u5fc5\u987b\u68c0\u67e5\u7ec4\u5408\u7247\u6bb5\uff08\u5982\u4e0b\u6240\u8ff0\uff09\u4ee5\u67e5\u770b\u66ff\u4ee3\u8def\u5f84\u3002<\/p>\n<h2>\ud83e\udde9 \u4f7f\u7528\u7ec4\u5408\u7247\u6bb5\u5904\u7406\u903b\u8f91<\/h2>\n<p>\u73b0\u5b9e\u4e16\u754c\u4e2d\u7684\u7cfb\u7edf\u5f88\u5c11\u9075\u5faa\u5355\u4e00\u7684\u76f4\u7ebf\u8def\u5f84\u3002\u987a\u5e8f\u56fe\u4f7f\u7528\u6846\u67b6\u6765\u5c01\u88c5\u590d\u6742\u903b\u8f91\u3002\u8fd9\u4e9b\u88ab\u79f0\u4e3a\u7ec4\u5408\u7247\u6bb5\u3002\u5b83\u4eec\u5141\u8bb8\u4f60\u5728\u56fe\u4e2d\u5c55\u793a\u66ff\u4ee3\u3001\u53ef\u9009\u6216\u91cd\u590d\u7684\u884c\u4e3a\u3002<\/p>\n<h3>1. \u5e38\u89c1\u7684\u7247\u6bb5\u7c7b\u578b<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u64cd\u4f5c\u7b26<\/th>\n<th>\u542b\u4e49<\/th>\n<th>\u7528\u4f8b<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>alt<\/strong>\uff08\u53ef\u9009\uff09<\/td>\n<td>\u6839\u636e\u6761\u4ef6\u9009\u62e9\u4e00\u4e2a\u5757\u3002<\/td>\n<td>\u5982\u679c\u7528\u6237\u5df2\u767b\u5f55\uff0c\u663e\u793a\u4eea\u8868\u677f\uff1b\u5426\u5219\uff0c\u663e\u793a\u767b\u5f55\u754c\u9762\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>opt<\/strong>\uff08\u53ef\u9009\uff09<\/td>\n<td>\u663e\u793a\u53ef\u80fd\u6216\u53ef\u80fd\u4e0d\u53d1\u751f\u7684\u64cd\u4f5c\u884c\u4e3a\u3002<\/td>\n<td>\u53d1\u9001\u90ae\u4ef6\u901a\u77e5\uff08\u4ec5\u5728\u5df2\u914d\u7f6e\u65f6\uff09\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>loop<\/strong><\/td>\n<td>\u91cd\u590d\u5305\u542b\u7684\u4ea4\u4e92\u3002<\/td>\n<td>\u9010\u4e2a\u5904\u7406\u9879\u76ee\u5217\u8868\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>break<\/strong><\/td>\n<td>\u63d0\u524d\u7ec8\u6b62\u5f53\u524d\u6d41\u7a0b\u3002<\/td>\n<td>\u5982\u679c\u652f\u4ed8\u5931\u8d25\uff0c\u5219\u4e2d\u6b62\u4ea4\u6613\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>par<\/strong>\uff08\u5e76\u884c\uff09<\/td>\n<td>\u591a\u4e2a\u4ea4\u4e92\u540c\u65f6\u53d1\u751f\u3002<\/td>\n<td>\u540c\u65f6\u66f4\u65b0\u7f13\u5b58\u5e76\u8bb0\u5f55\u6d3b\u52a8\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>region<\/strong><\/td>\n<td>\u6807\u8bc6\u56fe\u8868\u4e2d\u7684\u7279\u5b9a\u533a\u57df\u3002<\/td>\n<td>\u5728\u547d\u540d\u7684\u4e0a\u4e0b\u6587\u4e2d\u5bf9\u76f8\u5173\u64cd\u4f5c\u8fdb\u884c\u5206\u7ec4\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>2. \u9605\u8bfb\u7247\u6bb5\u6846<\/h3>\n<p>\u7247\u6bb5\u88ab\u4e00\u4e2a\u865a\u7ebf\u77e9\u5f62\u5305\u56f4\uff0c\u5de6\u4e0a\u89d2\u6709\u4e00\u4e2a\u6807\u7b7e\u3002\u8be5\u6807\u7b7e\u5b9a\u4e49\u4e86\u64cd\u4f5c\u7b26\uff08\u4f8b\u5982\uff0c<code>[alt]<\/code>\uff09\u3002\u6761\u4ef6\u901a\u5e38\u653e\u5728\u82b1\u62ec\u53f7\u4e2d<code>{}<\/code>\u5728\u6846\u5185\u3002<\/p>\n<p>\u9605\u8bfb\u4e00\u4e2a<code>alt<\/code> \u5757\uff0c\u4ed4\u7ec6\u626b\u63cf\u6761\u4ef6\u3002\u53ea\u6709\u4e00\u4e2a\u5757\u4f1a\u6267\u884c\u3002\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u6761\u4ef6\uff0c\u5219\u9ed8\u8ba4\u4e3a\u9ed8\u8ba4\u8def\u5f84\u3002\u5728 <code>loop<\/code> \u5757\u4e2d\uff0c\u82b1\u62ec\u53f7\u5185\u7684\u6761\u4ef6\u51b3\u5b9a\u4e86\u91cd\u590d\u4f55\u65f6\u505c\u6b62\u3002<\/p>\n<h2>\ud83d\udcd6 \u9605\u8bfb\u987a\u5e8f\u56fe\uff1a\u9010\u6b65\u65b9\u6cd5<\/h2>\n<p>\u4e3a\u4e86\u6709\u6548\u5206\u6790\u987a\u5e8f\u56fe\uff0c\u8bf7\u9075\u5faa\u7ed3\u6784\u5316\u7684\u65b9\u6cd5\u3002\u8fd9\u53ef\u4ee5\u786e\u4fdd\u60a8\u4e0d\u4f1a\u9057\u6f0f\u5173\u952e\u7684\u4ea4\u4e92\u6216\u903b\u8f91\u5206\u652f\u3002<\/p>\n<h3>\u6b65\u9aa4 1\uff1a\u8bc6\u522b\u53c2\u4e0e\u8005<\/h3>\n<p>\u4ece\u9876\u90e8\u5f00\u59cb\u3002\u5217\u51fa\u6240\u6709\u751f\u547d\u7ebf\u3002\u786e\u5b9a\u54ea\u4e9b\u662f\u5916\u90e8\u53c2\u4e0e\u8005\uff0c\u54ea\u4e9b\u662f\u5185\u90e8\u7cfb\u7edf\u7ec4\u4ef6\u3002\u8fd9\u8bbe\u5b9a\u4e86\u4ea4\u4e92\u7684\u8303\u56f4\u3002<\/p>\n<h3>\u6b65\u9aa4 2\uff1a\u8ffd\u8e2a\u4e3b\u6210\u529f\u8def\u5f84<\/h3>\n<p>\u4ece\u7b2c\u4e00\u4e2a\u53c2\u4e0e\u8005\u5f00\u59cb\uff0c\u6cbf\u7740\u5b9e\u7ebf\u7bad\u5934\u8ffd\u8e2a\u5230\u6700\u7ec8\u54cd\u5e94\u3002\u6682\u65f6\u5ffd\u7565\u53ef\u9009\u5757\u3002\u4e13\u6ce8\u4e8e\u4e00\u5207\u6309\u9884\u671f\u5de5\u4f5c\u7684\u987a\u5229\u8def\u5f84\u3002\u8fd9\u80fd\u5e2e\u52a9\u4f60\u7406\u89e3\u6838\u5fc3\u529f\u80fd\u3002<\/p>\n<h3>\u6b65\u9aa4 3\uff1a\u5206\u6790\u6fc0\u6d3b\u6761<\/h3>\n<p>\u67e5\u770b\u751f\u547d\u7ebf\u4e0a\u7684\u77e9\u5f62\u3002\u8bc6\u522b\u54ea\u4e9b\u5bf9\u8c61\u6b63\u5728\u5fd9\u788c\u4ee5\u53ca\u5fd9\u788c\u7684\u65f6\u95f4\u957f\u77ed\u3002\u8f83\u957f\u7684\u6fc0\u6d3b\u6761\u53ef\u80fd\u8868\u793a\u5927\u91cf\u5904\u7406\u6216\u6570\u636e\u5e93\u7b49\u5f85\u3002<\/p>\n<h3>\u6b65\u9aa4 4\uff1a\u68c0\u67e5\u7ec4\u5408\u7247\u6bb5<\/h3>\n<p>\u73b0\u5728\uff0c\u67e5\u770b\u865a\u7ebf\u6846\u3002\u9605\u8bfb <code>alt<\/code>, <code>loop<\/code>\uff0c\u4ee5\u53ca <code>opt<\/code> \u90e8\u5206\u3002\u7ed8\u5236\u51fa\u66ff\u4ee3\u8def\u5f84\u3002\u95ee\u81ea\u5df1\uff1a\u5982\u679c\u8fd9\u4e2a\u6761\u4ef6\u5931\u8d25\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1f<\/p>\n<h3>\u6b65\u9aa4 5\uff1a\u9a8c\u8bc1\u65f6\u5e8f\u548c\u8fd4\u56de\u6d88\u606f<\/h3>\n<p>\u68c0\u67e5\u865a\u7ebf\u8fd4\u56de\u7ebf\u3002\u5b83\u4eec\u662f\u5426\u4e0e\u53d1\u9001\u7684\u6d88\u606f\u76f8\u5bf9\u5e94\uff1f\u786e\u4fdd\u6bcf\u4e2a\u8bf7\u6c42\u90fd\u6709\u54cd\u5e94\uff0c\u6216\u9690\u542b\u4e86\u8d85\u65f6\u673a\u5236\u3002<\/p>\n<h2>\ud83d\udea7 \u5e38\u89c1\u9677\u9631\u4e0e\u6700\u4f73\u5b9e\u8df5<\/h2>\n<p>\u5373\u4f7f\u7ecf\u9a8c\u4e30\u5bcc\u7684\u5f00\u53d1\u4eba\u5458\uff0c\u5982\u679c\u987a\u5e8f\u56fe\u7ed8\u5236\u4e0d\u6e05\u6670\uff0c\u4e5f\u53ef\u80fd\u4ea7\u751f\u8bef\u89e3\u3002\u4e86\u89e3\u5e38\u89c1\u95ee\u9898\u6709\u52a9\u4e8e\u51c6\u786e\u9605\u8bfb\u548c\u521b\u5efa\u6587\u6863\u3002<\/p>\n<h3>1. \u907f\u514d\u6b67\u4e49<\/h3>\n<ul>\n<li><strong>\u6e05\u6670\u7684\u6807\u7b7e\uff1a<\/strong> \u6bcf\u6761\u6d88\u606f\u90fd\u5e94\u6709\u63cf\u8ff0\u6027\u540d\u79f0\u3002\u907f\u514d\u4f7f\u7528\u5982 <code>send()<\/code>.<\/li>\n<li><strong>\u547d\u540d\u4e00\u81f4\uff1a<\/strong> \u5728\u6574\u4e2a\u56fe\u4e2d\u4f7f\u7528\u76f8\u540c\u7684\u5bf9\u8c61\u540d\u79f0\u3002<\/li>\n<li><strong>\u903b\u8f91\u5206\u7ec4\uff1a<\/strong> \u4f7f\u7528\u6846\u67b6\u6765\u903b\u8f91\u5730\u5206\u7ec4\u76f8\u5173\u7684\u4ea4\u4e92\u3002<\/li>\n<\/ul>\n<h3>2. \u7ba1\u7406\u590d\u6742\u6027<\/h3>\n<p>\u5e8f\u5217\u56fe\u53ef\u80fd\u4f1a\u8fc5\u901f\u53d8\u5f97\u6742\u4e71\u3002\u4e3a\u4e86\u4fdd\u6301\u53ef\u8bfb\u6027\uff1a<\/p>\n<ul>\n<li><strong>\u9650\u5236\u8303\u56f4\uff1a<\/strong> \u4e0d\u8981\u8bd5\u56fe\u5728\u4e00\u4e2a\u56fe\u4e2d\u5c55\u793a\u6574\u4e2a\u7cfb\u7edf\u3002\u6309\u529f\u80fd\u6216\u7528\u4f8b\u8fdb\u884c\u62c6\u5206\u3002<\/li>\n<li><strong>\u4f7f\u7528\u5f15\u7528\uff1a<\/strong> \u5982\u679c\u5e8f\u5217\u8f83\u4e3a\u590d\u6742\uff0c\u5e94\u5f15\u7528\u4e00\u4e2a\u72ec\u7acb\u7684\u56fe\uff0c\u800c\u4e0d\u662f\u5c06\u5176\u5185\u8054\u7ed8\u5236\u3002<\/li>\n<li><strong>\u6781\u7b80\u4e3b\u4e49\uff1a<\/strong> \u4ec5\u5305\u542b\u4e0e\u5f53\u524d\u8bb0\u5f55\u7684\u7279\u5b9a\u7528\u4f8b\u76f8\u5173\u7684\u4ea4\u4e92\u3002<\/li>\n<\/ul>\n<h3>3. \u65f6\u95f4\u8bef\u89e3<\/h3>\n<p>\u867d\u7136\u5e8f\u5217\u56fe\u6697\u793a\u65f6\u95f4\u4ece\u4e0a\u5230\u4e0b\u6d41\u52a8\uff0c\u4f46\u5b83\u4eec\u5e76\u4e0d\u4e25\u683c\u5f3a\u5236\u65f6\u95f4\u7ea6\u675f\u3002\u5b83\u4eec\u4e0d\u4f1a\u663e\u793a\u6beb\u79d2\u6216\u786e\u5207\u7684\u5ef6\u8fdf\u3002\u4e0d\u8981\u6839\u636e\u6d88\u606f\u4e4b\u95f4\u7684\u5782\u76f4\u8ddd\u79bb\u63a8\u65ad\u7cbe\u786e\u7684\u5ef6\u8fdf\u3002<\/p>\n<h3>4. \u53cd\u9988\u56de\u8def<\/h3>\n<p>\u786e\u4fdd\u53cd\u9988\u56de\u8def\u6e05\u6670\u3002\u5982\u679c\u7528\u6237\u64cd\u4f5c\u89e6\u53d1\u4e86\u7cfb\u7edf\u66f4\u65b0\uff0c\u5e94\u663e\u793a\u786e\u8ba4\u6d88\u606f\u8fd4\u56de\u7ed9\u7528\u6237\u3002\u7f3a\u5c11\u8fd4\u56de\u6d88\u606f\u4f1a\u4f7f\u6d41\u7a0b\u663e\u5f97\u4e0d\u5b8c\u6574\u3002<\/p>\n<h2>\ud83d\udd17 \u4e0e\u5176\u4ed6\u56fe\u7684\u96c6\u6210<\/h2>\n<p>\u5e8f\u5217\u56fe\u5e76\u975e\u5b64\u7acb\u5b58\u5728\u3002\u5f53\u4e0e\u5176\u4ed6UML\u56fe\u96c6\u6210\u65f6\uff0c\u5b83\u4eec\u80fd\u6700\u597d\u5730\u63d0\u4f9b\u7cfb\u7edf\u7684\u5b8c\u6574\u89c6\u56fe\u3002<\/p>\n<ul>\n<li><strong>\u7c7b\u56fe\uff1a<\/strong> \u4f7f\u7528\u5b83\u4eec\u6765\u7406\u89e3\u5e8f\u5217\u56fe\u4e2d\u5bf9\u8c61\u7684\u5c5e\u6027\u548c\u53ef\u7528\u65b9\u6cd5\u3002\u786e\u4fdd\u6d88\u606f\u540d\u79f0\u4e0e\u65b9\u6cd5\u7b7e\u540d\u5339\u914d\u3002<\/li>\n<li><strong>\u72b6\u6001\u673a\u56fe\uff1a<\/strong> \u4f7f\u7528\u5b83\u4eec\u6765\u5b9a\u4e49\u5728\u5e8f\u5217\u8fc7\u7a0b\u4e2d\u53d1\u751f\u53d8\u5316\u7684\u5bf9\u8c61\u7684\u5185\u90e8\u72b6\u6001\u3002<\/li>\n<li><strong>\u7ec4\u4ef6\u56fe\uff1a<\/strong> 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