{"id":2278,"date":"2026-05-26T08:05:43","date_gmt":"2026-05-26T08:05:43","guid":{"rendered":"https:\/\/www.vpascode.com\/tw\/docs\/uncategorized\/mermaid-js-sequence-diagram-syntax-guide\/"},"modified":"2026-05-26T08:05:43","modified_gmt":"2026-05-26T08:05:43","slug":"mermaid-js-sequence-diagram-syntax-guide","status":"publish","type":"ld_docs","link":"https:\/\/www.vpascode.com\/tw\/docs\/vpascode-docs\/mermaid-js-sequence-diagram-syntax-guide\/","title":{"rendered":"Mermaid.js \u5e8f\u5217\u5716\u8a9e\u6cd5\u6307\u5357"},"content":{"rendered":"<h2>\u4ec0\u9ebc\u662f\u5e8f\u5217\u5716\uff1f<\/h2>\n<p>\u4e00\u500b<strong>\u5e8f\u5217\u5716<\/strong>\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u884c\u70ba<strong>UML \u5716<\/strong>\u7528\u65bc\u5728\u7dda\u6027\u6642\u9593\u8ef8\u4e0a\u53ef\u8996\u5316\u4e0d\u540c\u7cfb\u7d71\u5be6\u9ad4\u4e4b\u9593\u8a0a\u606f\u3001\u51fd\u6578\u547c\u53eb\u548c\u8cc7\u6599\u8f09\u8377\u7684\u6642\u9593\u9806\u5e8f\u6d41\u3002\u88ab\u8996\u70ba\u6838\u5fc3<strong>UML \u5716\u985e\u578b<\/strong>\uff0c\u5b83\u901a\u904e\u6cbf X \u8ef8\u5806\u758a\u7cfb\u7d71\u7d44\u4ef6\u4f5c\u70ba\u5782\u76f4\u751f\u547d\u7dda\uff0c\u4e26\u6cbf Y \u8ef8\u8ffd\u8e64\u8a0a\u606f\u4ea4\u63db\u4f86\u63cf\u7e6a\u904b\u884c\u6642\u4e92\u52d5\u3002\u6b64\u85cd\u5716\u5c0d\u958b\u767c\u4eba\u54e1\u8abf\u8a66\u5206\u6563\u5f0f API \u63e1\u624b\u3001\u5fae\u670d\u52d9\u7de8\u6392\u8def\u5f91\u6216\u5373\u6642\u4f7f\u7528\u8005\u9a57\u8b49\u6d41\u7a0b\u6975\u70ba\u73cd\u8cb4\u3002<\/p>\n<p>\u4f7f\u7528<strong>Mermaid.js<\/strong>\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u76f4\u89c0\u7684\u6587\u672c\u7d50\u69cb\u7de8\u5beb\u8907\u96dc\u7684\u6642\u9593\u904e\u7a0b\u3002\u5f15\u64ce\u6703\u81ea\u52d5\u8655\u7406\u5782\u76f4\u9593\u8ddd\uff0c\u7ba1\u7406\u8a0a\u606f\u7bad\u982d\u5c0d\u9f4a\uff0c\u4e26\u5728\u60a8\u7684\u756b\u5e03\u4e0a\u4e7e\u6de8\u5730\u7e6a\u88fd\u904b\u884c\u6642\u6fc0\u6d3b\u5340\u584a\u3002<\/p>\n<h2>\u6838\u5fc3\u8a9e\u6cd5\u6307\u5357\uff1a\u5143\u7d20\u8207\u69cb\u9020<\/h2>\n<p>\u8981\u5728 Mermaid \u4e2d\u8a2d\u8a08\u51fa\u7cbe\u78ba\u4e14\u6975\u6613\u6383\u63cf\u7684 UML \u5e8f\u5217\u5716\uff0c\u60a8\u5fc5\u9808\u638c\u63e1\u53c3\u8207\u8005\u5ba3\u544a\u3001\u8a0a\u606f\u7bad\u982d\u8b8a\u9ad4\u3001\u660e\u78ba\u7684\u751f\u547d\u7dda\u4ee5\u53ca\u689d\u4ef6\u5340\u584a\u7d50\u69cb\u3002<\/p>\n<h3>1. \u5ba3\u544a\u53c3\u8207\u8005\u8207\u89d2\u8272<\/h3>\n<p>\u60a8\u4f7f\u7528<code>participant<\/code>\u95dc\u9375\u5b57\u5ba3\u544a\u6a19\u6e96\u7cfb\u7d71\u5be6\u9ad4\u3002\u5982\u679c\u8a72\u5be6\u9ad4\u4ee3\u8868\u4eba\u985e\u7d42\u7aef\u4f7f\u7528\u8005\u6216\u5916\u90e8\u64cd\u4f5c\u54e1\uff0c\u8acb\u4f7f\u7528<code>actor<\/code>\u95dc\u9375\u5b57\u5728\u756b\u5e03\u4e0a\u7e6a\u88fd\u6a19\u6e96\u7684\u68d2\u72c0\u4eba\u5f62\u5716\u793a\uff1a<\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Mermaid<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNorTi0sTc1LTnXJTEwvSszl5VIAgsTkkvwiBeeczNS8EohIQWJRSWZyZkFiXomCY4CnQmKxgntiSWp5YqVCUH5pSWoRAF8GF\/U=\" 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\u7de8\u8f2f Mermaid<\/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\">Mermaid<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNorTi0sTc1LTnXJTEwvSszl5VIAgsTkkvwihafrFj3r2PZ89XqIYEFiUUlmcmZBYl6JgmOAp8KTvXOeN+16vm3Ty+lzXmxf\/3zKxqczVwAABCElNA==\" \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 Mermaid in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-mermaid\"><code class=\"language-mermaid\" data-language=\"mermaid\" class=\"language-mermaid\">sequenceDiagram\r\n    actor \u5ba2\u6236\u7aef\r\n    participant API \u4f5c\u70ba\u7db2\u95dc\u8def\u7531\u5668<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNorTi0sTc1LTnXJTEwvSszl5VIAgsTkkvwihafrFj3r2PZ89XqIYEFiUUlmcmZBYl6JgmOAp8KTvXOeN+16vm3Ty+lzXmxf\/3zKxqczVwAABCElNA==\" \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 Mermaid 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\/editor\/#mermaid:eNorTi0sTc1LTnXJTEwvSszl5VIAgsTkkvwiBeeczNS8EohIQWJRSWZyZkFiXomCY4CnQmKxgntiSWp5YqVCUH5pSWoRAF8GF\/U=\" 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\u7de8\u8f2f Mermaid<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"WdDXIln\"><img fetchpriority=\"high\" alt=\"\" class=\"alignnone size-full wp-image-623\" decoding=\"async\" fetchpriority=\"high\" height=\"171\" sizes=\"(max-width: 450px) 100vw, 450px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a190364bd762.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a190364bd762.png 450w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a190364bd762-300x114.png 300w\" width=\"450\"\/><\/p>\n<p><em>\u5c08\u696d\u63d0\u793a\uff1a<\/em>\u4f7f\u7528<code>as<\/code>\u95dc\u9375\u5b57\u5c07\u9577\u7684\u7d44\u4ef6\u540d\u7a31\u6620\u5c04\u70ba\u7c21\u6f54\u7684\u5167\u90e8\u5225\u540d\uff0c\u4f7f\u60a8\u7684\u8a0a\u606f\u8173\u672c\u7c21\u6f54\u4e14\u6613\u8b80\u3002<\/p>\n<h3>2. \u683c\u5f0f\u5316\u8a0a\u606f\u7bad\u982d<\/h3>\n<p>\u60a8\u4f7f\u7528\u7684\u7dda\u689d\u985e\u578b\u548c\u7bad\u982d\u982d\u90e8\u6c7a\u5b9a\u4e86\u7cfb\u7d71\u53c3\u8207\u8005\u4e4b\u9593\u7684\u901a\u8a0a\u98a8\u683c\uff1a<\/p>\n<ul>\n<li><code>-&gt;&gt;<\/code> **\u540c\u6b65\u547c\u53eb\uff1a** \u4e00\u689d\u5be6\u7dda\uff0c\u7bad\u982d\u70ba\u5be6\u5fc3\u3002\u4ee3\u8868\u4e00\u500b\u963b\u585e\u8acb\u6c42\uff0c\u6703\u7b49\u5f85\u57f7\u884c\u5b8c\u6210\u3002<\/li>\n<li><code>--&gt;<\/code> **\u56de\u61c9\u7dda\uff1a** \u4e00\u689d\u865b\u7dda\uff0c\u7bad\u982d\u70ba\u7a7a\u5fc3\u3002\u7528\u65bc\u50b3\u56de\u8cc7\u6599\u8f09\u8377\u6216\u78ba\u8a8d\u4ee4\u724c\u3002<\/li>\n<li><code>-&gt;<\/code> **\u975e\u540c\u6b65\u547c\u53eb\uff1a** \u4e00\u689d\u5be6\u7dda\uff0c\u7bad\u982d\u70ba\u7a7a\u5fc3\u3002\u8868\u793a\u975e\u963b\u585e\u8a0a\u606f\u6216\u4e8b\u4ef6\u5ee3\u64ad\u3002<\/li>\n<\/ul>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Mermaid<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNorTi0sTc1LTnXJTEwvSszl5VIAAseCAl07u+DUorLUIiuFIJCS4hKFgMTKnPzEFIgSiKSurh1QrZWCkYGBgr83UGVxQX5ecSoAn9Ua8A==\" 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\u7de8\u8f2f Mermaid<\/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\">Mermaid<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNp7uqv\/acf0p3Om8XIpAIFjQYGunV1walFZapGVwovV3c82Nr3Y0\/midztEHiKjq2sHVGilYGRgoODvrfB09rxn7Z0Asn0erQ==\" \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 Mermaid in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-mermaid\"><code class=\"language-mermaid\" data-language=\"mermaid\" class=\"language-mermaid\">\u5e8f\u5217\u5716\r\n    App-&gt;&gt;Server: \u8acb\u6c42\u8f09\u8377\r\n    Server--&gt;App: 200 OK \u56de\u61c9<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNp7uqv\/acf0p3Om8XIpAIFjQYGunV1walFZapGVwovV3c82Nr3Y0\/midztEHiKjq2sHVGilYGRgoODvrfB09rxn7Z0Asn0erQ==\" \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 Mermaid 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\/editor\/#mermaid:eNorTi0sTc1LTnXJTEwvSszl5VIAAseCAl07u+DUorLUIiuFIJCS4hKFgMTKnPzEFIgSiKSurh1QrZWCkYGBgr83UGVxQX5ecSoAn9Ua8A==\" 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\u7de8\u8f2f Mermaid<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"jLtFHya\"><img alt=\"\" class=\"alignnone size-full wp-image-624\" decoding=\"async\" height=\"267\" sizes=\"(max-width: 450px) 100vw, 450px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a190369d9ad7.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a190369d9ad7.png 450w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a190369d9ad7-300x178.png 300w\" width=\"450\"\/><\/p>\n<h3>3. \u7ba1\u7406\u751f\u547d\u7dda\u6fc0\u6d3b\u689d<\/h3>\n<p>\u8981\u7cbe\u78ba\u986f\u793a\u7cfb\u7d71\u5143\u4ef6\u4f55\u6642\u6b63\u5728\u57f7\u884c\u4efb\u52d9\u6216\u4f54\u7528\u57f7\u884c\u7dd2\u8a18\u61b6\u9ad4\uff0c\u8acb\u4f7f\u7528 <code>activate<\/code> \u548c <code>deactivate<\/code> \u6307\u4ee4\u3002\u6216\u8005\uff0c\u60a8\u53ef\u4ee5\u76f4\u63a5\u5728\u8a0a\u606f\u76ee\u6a19\u5f8c\u9762\u52a0\u4e0a\u52a0\u865f\uff08<code>+<\/code>\uff09\u6216\u6e1b\u865f\uff08<code>-<\/code>\uff09\u7b26\u865f\uff0c\u4f5c\u70ba\u5feb\u901f\u7684\u8996\u89ba\u6377\u5f91\uff1a<\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Mermaid<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNolzDEKwzAMBdC90DtoyVR8gQxekgOU5ATCfILAcagku\/T2Degvf\/iPb\/h0tIJV+FA+nw+6s1RB85Tza4cO6ExvvQrMaGXnMNNEMZIYtetLQ6xzrT\/i4jIQKkhKOcXnTBu8a7vLenX7AzPwKV4=\" 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\u7de8\u8f2f Mermaid<\/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\">Mermaid<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNp7uqv\/acf0p3Om8XIpAIFzTmZqXomunZ12cGpRWWqRlcKLmVOfT2h7sbn92bSZEDWqqgpP9ux6Nqf36cwVz\/v3PZ2z4un2TS+WTXuxbNeTHV3P9jc827IbohJihq6unS7EXCuFp02bn86e93zrhGfz5gAAZb49hg==\" \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 Mermaid in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-mermaid\"><code class=\"language-mermaid\" data-language=\"mermaid\" class=\"language-mermaid\">\u5e8f\u5217\u5716\r\n    Client-&gt;&gt;+Server: \u8655\u7406\u8cc7\u6599\r\n    %% \u4f3a\u670d\u5668\u73fe\u5728\u5df2\u8996\u89ba\u4e0a\u6fc0\u6d3b\r\n    Server--&gt;-Client: \u50b3\u56de\u7d50\u679c<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNp7uqv\/acf0p3Om8XIpAIFzTmZqXomunZ12cGpRWWqRlcKLmVOfT2h7sbn92bSZEDWqqgpP9ux6Nqf36cwVz\/v3PZ2z4un2TS+WTXuxbNeTHV3P9jc827IbohJihq6unS7EXCuFp02bn86e93zrhGfz5gAAZb49hg==\" \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 Mermaid 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\/editor\/#mermaid:eNolzDEKwzAMBdC90DtoyVR8gQxekgOU5ATCfILAcagku\/T2Degvf\/iPb\/h0tIJV+FA+nw+6s1RB85Tza4cO6ExvvQrMaGXnMNNEMZIYtetLQ6xzrT\/i4jIQKkhKOcXnTBu8a7vLenX7AzPwKV4=\" 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\u7de8\u8f2f Mermaid<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"cOetWMX\"><img alt=\"\" class=\"alignnone size-full wp-image-625\" decoding=\"async\" height=\"267\" sizes=\"(max-width: 450px) 100vw, 450px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a19036e236c9.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a19036e236c9.png 450w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a19036e236c9-300x178.png 300w\" width=\"450\"\/><\/p>\n<h3>4. \u7d50\u69cb\u5316\u689d\u4ef6\u8207\u66ff\u4ee3\u65b9\u6848\uff08Alt\u3001Opt\u3001Loop\uff09<\/h3>\n<p>\u70ba\u4e86\u8655\u7406\u5206\u652f\u57f7\u884c\u6642\u908f\u8f2f\u3001\u6b0a\u6756\u8a55\u4f30\u6216\u91cd\u8907\u7684\u8acb\u6c42\u91cd\u8a66\uff0c\u8acb\u5c07\u60a8\u7684\u8a0a\u606f\u8173\u672c\u5305\u88dd\u5728\u6a19\u6e96\u7684\u5340\u584a\u7247\u6bb5\u4e2d\uff1a<\/p>\n<ul>\n<li><code>alt \/ else<\/code> \u2014 \u8a55\u4f30\u689d\u4ef6\u8def\u5f91\uff08\u985e\u4f3c\u65bc if\/else \u7a0b\u5f0f\u78bc\u5340\u584a\uff09\u3002<\/li>\n<li><code>opt<\/code> \u2014 \u5b9a\u7fa9\u4e00\u500b\u50c5\u5728\u7279\u5b9a\u689d\u4ef6\u4e0b\u57f7\u884c\u7684\u9078\u64c7\u6027\u6b65\u9a5f\u3002<\/li>\n<li><code>\u5faa\u74b0<\/code> \u2014 \u91cd\u8907\u57f7\u884c\u4e00\u500b\u57f7\u884c\u5e8f\u5217\uff0c\u76f4\u5230\u689d\u4ef6\u6eff\u8db3\u70ba\u6b62\u3002<\/li>\n<\/ul>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Mermaid<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNorTi0sTc1LTnXJTEwvSszl5VIAgpz8\/AIF17LUokoFYwOF4tTk\/LyUYogUCDjnZKbmleja2QWnFgEVWSl4pCYWlSSlJpYoBGTmpUMUpualAABAyxwZ\" 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\u7de8\u8f2f Mermaid<\/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\">Mermaid<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNp7uqv\/acf0p3Om8XIpAMHTfaueT9qg8Gx9v7HB8+WTIIJgiXWLnnVse756va6d3ZM9u57N6X06c4WVwtP9zS+2b37auPXZjjUQxc+3Tng2dz4AknItJA==\" \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 Mermaid in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-mermaid\"><code class=\"language-mermaid\" data-language=\"mermaid\" class=\"language-mermaid\">\u5e8f\u5217\u5716\r\n    \u5faa\u74b0 \u6bcf30\u79d2\r\n        \u5ba2\u6236\u7aef-&gt;&gt;\u4f3a\u670d\u5668: \u5fc3\u8df3\u5075\u6e2c\r\n    \u7d50\u675f<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNp7uqv\/acf0p3Om8XIpAMHTfaueT9qg8Gx9v7HB8+WTIIJgiXWLnnVse756va6d3ZM9u57N6X06c4WVwtP9zS+2b37auPXZjjUQxc+3Tng2dz4AknItJA==\" \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 Mermaid 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\/editor\/#mermaid:eNorTi0sTc1LTnXJTEwvSszl5VIAgpz8\/AIF17LUokoFYwOF4tTk\/LyUYogUCDjnZKbmleja2QWnFgEVWSl4pCYWlSSlJpYoBGTmpUMUpualAABAyxwZ\" 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\u7de8\u8f2f Mermaid<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"VlRPVlQ\"><img loading=\"lazy\" alt=\"\" class=\"alignnone size-full wp-image-626\" decoding=\"async\" height=\"274\" loading=\"lazy\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a190372961a2.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a190372961a2.png 450w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a190372961a2-300x183.png 300w\" width=\"450\"\/><\/p>\n<h2>\u5efa\u7acb\u6e05\u6670\u5e8f\u5217\u6642\u9593\u8ef8\u7684\u6700\u4f73\u5be6\u52d9<\/h2>\n<ul>\n<li><strong>\u4fdd\u6301\u751f\u547d\u7dda\u7c21\u6f54\uff1a<\/strong> \u907f\u514d\u5728 X \u8ef8\u4e0a\u5217\u51fa\u6578\u5341\u500b\u5fae\u5c0f\u5be6\u9ad4\u3002\u5982\u679c\u4e00\u500b\u6d41\u7a0b\u8207\u6b21\u8981\u7684\u8f14\u52a9\u985e\u5225\u4e92\u52d5\uff0c\u61c9\u5c07\u5b83\u5011\u62bd\u8c61\u5728\u9ad8\u968e\u7cfb\u7d71\u908a\u754c\u4e4b\u5f8c\uff0c\u4f8b\u5982<code>[\u9a57\u8b49\u5de5\u4f5c\u7a0b\u5f0f]<\/code> \u6216 <code>[\u5feb\u53d6\u6c60]<\/code>.<\/li>\n<li><strong>\u660e\u78ba\u6a19\u793a\u72c0\u614b\u78bc\uff1a<\/strong> \u5728\u64b0\u5beb\u56de\u61c9\u56de\u50b3\u6642\uff08<code>--&gt;<\/code>\uff09\uff0c\u4e0d\u8981\u53ea\u5beb\u300c\u56de\u50b3\u8cc7\u6599\u300d\u3002\u61c9\u4ee5\u660e\u78ba\u7684 HTTP \u72c0\u614b\u78bc\u6216\u4e8b\u4ef6\u985e\u578b\u6a19\u793a\u8def\u5f91\uff08\u4f8b\u5982\uff0c<code>\"201 \u5df2\u5efa\u7acb\uff08JWT \u6191\u8b49\uff09\"<\/code>\uff09\uff0c\u4ee5\u63d0\u4f9b\u5de5\u7a0b\u5e2b\u7cbe\u78ba\u7684\u4e0a\u4e0b\u6587\u8cc7\u8a0a\u3002<\/li>\n<li><strong>\u70ba\u8907\u96dc\u904b\u7b97\u5be6\u4f5c\u8a3b\u89e3\uff1a<\/strong> \u4f7f\u7528 <code>Note over<\/code>, <code>Note left of<\/code>\uff0c\u6216 <code>Note right of<\/code> \u6307\u4ee4\u4f86\u8a18\u9304\u975e\u8996\u89ba\u5316\u64cd\u4f5c\uff0c\u4f8b\u5982\u5167\u90e8\u52a0\u5bc6\u6b65\u9a5f\u6216\u8cc7\u6599\u5eab\u8cc7\u6599\u96dc\u6e4a\u3002<\/li>\n<\/ul>\n<h2>\u73fe\u5be6\u4e16\u754c\u4e2d\u7684 Mermaid.js \u5e8f\u5217\u5716\u7bc4\u4f8b<\/h2>\n<h3>\u7bc4\u4f8b 1\uff1a\u5b89\u5168\u7684 OAuth2 \u6191\u8b49\u4ea4\u63db\u6d41\u7a0b\uff08\u555f\u7528\u8207\u66ff\u4ee3\u5340\u584a\uff09<\/h3>\n<p>\u6b64\u529f\u80fd\u85cd\u5716\u6a21\u64ec\u4e86\u4e00\u500b\u5b89\u5168\u7684\u4f7f\u7528\u8005\u767b\u5165\u5e8f\u5217\u3002\u5b83\u793a\u7bc4\u4e86\u5982\u4f55\u4f7f\u7528 alt\/else \u5340\u584a\uff0c\u7d50\u5408\u4eba\u985e\u53c3\u8207\u8005\u3001\u660e\u78ba\u7684\u7cfb\u7d71\u751f\u547d\u7dda\u8207\u8907\u96dc\u7684\u9a57\u8b49\u8def\u5f91\u3002<\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">\u7f8e\u4eba\u9b5a<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNptUstOAjEU3Zv4DzcsjMYQ8bFiQTJBEjAaCYguzaW9MA0z7XjbAfXr7WNIBnA208d59bSWvmrSgh4VrhnL8zPwHwpnGBaWGNDCSMs4TnsVslNCVagdZFUVAC9mqQqKs2GhSLt\/kLXLAzT8ezCRHqTcD0zZbJUM0okSbLqDwbWX6gctsYHOs1krDTvlBV4DvZOgHhKRfqUPM5KKSbgEEzHEp5JwAVaYihqGh3Y9J5gEivbGkNQn2hGvUNBBjKQ9r5elcjBkiqmxsAnUEt1D37FQEh3BFK3dGZYwRpu34VgcKEHGlFhpux0zdnDfuzs6XGxyaCS1GLGKFGH0LXLUa4oQWPlrzIQga+HNbEifunSjzYxczRqePt4SDi4nMg6uDl2O24tPxBuY2t\/x2JRNKCos+U634WCnxZ0csnF\/6N3CQqPfMax+ScKI2fBJgG5KMM\/NDjp7k7CmsaSbffMdyAri5iX6sH\/tqOE0\" 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\u7de8\u8f2f\u7f8e\u4eba\u9b5a<\/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\">Mermaid<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid: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\" \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 Mermaid in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-mermaid\"><code class=\"language-mermaid\" data-language=\"mermaid\" class=\"language-mermaid\">\u5e8f\u5217\u5716\r\n    \u4eba\u7269 User \u4ee3\u8868\u7d42\u7aef\u4f7f\u7528\u8005\r\n    \u53c3\u8207\u8005 App \u4ee3\u8868\u884c\u52d5\u61c9\u7528\u7a0b\u5f0f\u5ba2\u6236\u7aef\r\n    \u53c3\u8207\u8005 Auth \u4ee3\u8868 Auth0 \u8eab\u4efd\u63d0\u4f9b\u8005\r\n\r\n    User-&gt;&gt;+App: \u9ede\u64ca\u300c\u4f7f\u7528 OAuth \u767b\u5165\u300d\r\n    App-&gt;&gt;+Auth: \u4ee5 client_id \u8207 scope \u91cd\u5b9a\u5411\r\n    Auth--&gt;&gt;User: \u6e32\u67d3\u767b\u5165\u4ecb\u9762\r\n    User-&gt;&gt;Auth: \u63d0\u4ea4\u6191\u8b49\r\n    \r\n    Auth-&gt;&gt;Auth: \u9a57\u8b49\u5bc6\u78bc\u96dc\u6e4a\u503c\r\n    \r\n    \u82e5\u6191\u8b49\u6709\u6548\r\n        Auth--&gt;&gt;App: \u4ee5\u6388\u6b0a\u78bc\u9032\u884c 302 \u91cd\u5b9a\u5411\r\n        App-&gt;&gt;Auth: \u7528\u6388\u6b0a\u78bc\u4ea4\u63db\u5b58\u53d6\u6b0a\u6756\r\n        Auth--&gt;&gt;-App: \u56de\u50b3 JWT \u6b0a\u6756 (IdToken)\r\n        App--&gt;&gt;User: \u6e32\u67d3\u4f7f\u7528\u8005\u5e33\u6236\u9996\u9801\r\n    \u5426\u5247\u6191\u8b49\u7121\u6548\r\n        Auth--&gt;&gt;App: \u56de\u50b3 401 \u672a\u6388\u6b0a\u932f\u8aa4\r\n        App--&gt;&gt;-User: \u986f\u793a\u300c\u7121\u6548\u7684\u4f7f\u7528\u8005\u540d\u7a31\/\u5bc6\u78bc\u300d\u8b66\u544a\r\n    \u7d50\u675f<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid: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\" \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 Mermaid 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\/editor\/#mermaid:eNptUstOAjEU3Zv4DzcsjMYQ8bFiQTJBEjAaCYguzaW9MA0z7XjbAfXr7WNIBnA208d59bSWvmrSgh4VrhnL8zPwHwpnGBaWGNDCSMs4TnsVslNCVagdZFUVAC9mqQqKs2GhSLt\/kLXLAzT8ezCRHqTcD0zZbJUM0okSbLqDwbWX6gctsYHOs1krDTvlBV4DvZOgHhKRfqUPM5KKSbgEEzHEp5JwAVaYihqGh3Y9J5gEivbGkNQn2hGvUNBBjKQ9r5elcjBkiqmxsAnUEt1D37FQEh3BFK3dGZYwRpu34VgcKEHGlFhpux0zdnDfuzs6XGxyaCS1GLGKFGH0LXLUa4oQWPlrzIQga+HNbEifunSjzYxczRqePt4SDi4nMg6uDl2O24tPxBuY2t\/x2JRNKCos+U634WCnxZ0csnF\/6N3CQqPfMax+ScKI2fBJgG5KMM\/NDjp7k7CmsaSbffMdyAri5iX6sH\/tqOE0\" 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\u7de8\u8f2f\u7f8e\u4eba\u9b5a<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"zhyELct\"><img loading=\"lazy\" alt=\"\" class=\"alignnone size-full wp-image-627\" decoding=\"async\" height=\"829\" loading=\"lazy\" sizes=\"auto, (max-width: 939px) 100vw, 939px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a1903768417b.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a1903768417b.png 939w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a1903768417b-300x265.png 300w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a1903768417b-768x678.png 768w\" width=\"939\"\/><\/p>\n<p><strong>\u8a9e\u6cd5\u89e3\u6790\uff1a<\/strong> \u6b64\u6642\u9593\u8ef8\u8a18\u9304\u4e86\u591a\u65b9\u4e4b\u9593\u7684\u63e1\u624b\u6d41\u7a0b\u3002<code>alt \/ else<\/code> \u5bb9\u5668\u660e\u78ba\u5730\u5448\u73fe\u51fa\u4e8c\u5143\u9a57\u8b49\u8def\u5f91\uff0c\u78ba\u4fdd\u932f\u8aa4\u72c0\u614b\u8207\u6b63\u5e38\u6d41\u7a0b\u4e00\u540c\u88ab\u5b8c\u6574\u8a18\u9304\u3002<\/p>\n<h3>\u7bc4\u4f8b 2\uff1a\u5206\u6563\u5f0f\u8a02\u55ae\u5eab\u5b58\u7d50\u5e33\uff08\u5e73\u884c\u6d41\u7a0b\u8207\u8a3b\u89e3\uff09<\/h3>\n<p>\u6b64\u9032\u968e\u7cfb\u7d71\u85cd\u5716\u63cf\u7e6a\u51fa\u4f01\u696d\u7d1a\u96fb\u5546\u7d50\u5e33\u6d41\u7a0b\u3002\u5b83\u5229\u7528\u5e73\u884c\u5340\u584a\uff08<code>par<\/code>\uff09\u4f86\u5c55\u793a\u4e26\u884c\u7684 API \u767c\u9001\u6d41\u7a0b\uff0c\u4e26\u5728\u6574\u9ad4\u67b6\u69cb\u4e2d\u8655\u7406\u8cc7\u6599\u5eab\u9396\u5b9a\u7684\u8a3b\u89e3\u3002<\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">\u7f8e\u4eba\u9b5a<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#mermaid: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\" 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\u7de8\u8f2f\u7f8e\u4eba\u9b5a<\/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\">Mermaid<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid: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\" \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 Mermaid in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-mermaid\"><code class=\"language-mermaid\" data-language=\"mermaid\" class=\"language-mermaid\">\u5e8f\u5217\u5716\r\n    \u53c3\u8207\u8005 Web \u4ee3\u8868\u7db2\u9801\u524d\u7aef\r\n    \u53c3\u8207\u8005 Ord \u4ee3\u8868\u8a02\u55ae\u5354\u8abf\u5668\r\n    \u53c3\u8207\u8005 Inv \u4ee3\u8868\u5eab\u5b58\u670d\u52d9\r\n    \u53c3\u8207\u8005 Pay \u4ee3\u8868\u4ed8\u6b3e\u7db2\u95dc\r\n\r\n    Web-&gt;&gt;+Ord: \u63d0\u4ea4\u7d50\u5e33\u8acb\u6c42\r\n    \u8a3b\u89e3\u4f4d\u65bc Ord \u4e0a\u65b9\uff1a\u9a57\u8b49\u5546\u54c1\u5eab\u5b58\u53ef\u7528\u6027\r\n    \r\n    \u5e73\u884c \u767c\u9001\u4e26\u884c API \u8acb\u6c42\r\n        Ord-&gt;&gt;+Inv: \u9396\u5b9a\u5eab\u5b58\u9805\u76ee\r\n        Inv--&gt;-Ord: \u5eab\u5b58\u5df2\u4fdd\u7559\uff08\u5eab\u5b58\u9396\u5b9a\uff09\r\n    \u4e14\r\n        Ord-&gt;&gt;+Pay: \u6388\u6b0a\u4fe1\u7528\u5361\u6263\u6b3e\r\n        Pay--&gt;-Ord: \u6210\u529f\u6355\u7372\uff08\u6263\u6b3e\u5df2\u7d50\u7b97\uff09\r\n    \u7d50\u675f\r\n    \r\n    \u9078\u9805 \u82e5\u8655\u7406\u5206\u914d\u5931\u6557\r\n        \u8a3b\u89e3\u4f4d\u65bc Ord \u53f3\u5074\uff1a\u82e5\u4efb\u4e00\u547c\u53eb\u5931\u6557\uff0c\u57f7\u884c\u56de\u6efe\u5287\u60c5\r\n    \u7d50\u675f\r\n    \r\n    Ord--&gt;-Web: 200 \u6210\u529f\uff0c\u7d50\u5e33\u78ba\u8a8d<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid: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\" \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 Mermaid 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\/editor\/#mermaid:eNplkUFrwkAQhe+C\/2GOliJIjx4EibUIpRWF9jxuJsniJpvOTmzTX99ZF43UPexC8s3Me28CfXXUGFpZLBnr8Qj0tMhijW2xEfikA2A4P2v2jVCT30PvnEdIH2K9TUVBGMXzPbppThHVhxoFetgTn6yhe3KLfST1qRWFFxT6xn48SqQKmi4WjzpyDvvuUFuBrCJz9J3ALpoKksA3LwT+dBam7AexLXrYCNWwF2+OsDyhdXiwzkqfSq5aYGVDi2IqyHxjOuYoZLndQIbOhYTFo52jGDU1h9fYc7AXB92Q+mM6XUzPUgZoR0FToBwmSVLsQflDKsNL4jeTNJQ5LDupPNtfgowpjwGg7iGrkEsaKhS9TsywlY5JAzOGQig6B5PE6xpE3HXmdcvp9q2ug32sgaVz3qBY38Bag7vxdk6abVkJ+CKl\/fxDpotfvXMHVGcBSwRbqKkejIYIxdDj39BoVYXroufwNJtdRA9r1p0UlmvK\/wCHINpF\" 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\u7de8\u8f2f\u7f8e\u4eba\u9b5a<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"DDTNVua\"><img loading=\"lazy\" alt=\"\" class=\"alignnone size-full wp-image-628\" decoding=\"async\" height=\"692\" loading=\"lazy\" sizes=\"auto, (max-width: 1090px) 100vw, 1090px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a19037c84393.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a19037c84393.png 1090w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a19037c84393-300x190.png 300w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a19037c84393-1024x650.png 1024w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a19037c84393-768x488.png 768w\" width=\"1090\"\/><\/p>\n<p><strong>\u8a9e\u6cd5\u89e3\u6790\uff1a<\/strong> \u9019<code>par \/ and<\/code> 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