{"id":2108,"date":"2026-05-26T08:05:43","date_gmt":"2026-05-26T08:05:43","guid":{"rendered":"https:\/\/www.vpascode.com\/cn\/docs\/uncategorized\/mermaid-js-class-diagram-syntax-guide\/"},"modified":"2026-05-26T08:05:43","modified_gmt":"2026-05-26T08:05:43","slug":"mermaid-js-class-diagram-syntax-guide","status":"publish","type":"ld_docs","link":"https:\/\/www.vpascode.com\/cn\/docs\/vpascode-docs\/mermaid-js-class-diagram-syntax-guide\/","title":{"rendered":"Mermaid.js \u7c7b\u56fe\u8bed\u6cd5\u6307\u5357"},"content":{"rendered":"<h2>\u4ec0\u4e48\u662f\u7c7b\u56fe\uff1f<\/h2>\n<p>\u4e00\u4e2a<strong>\u7c7b\u56fe<\/strong>\u662f\u4e00\u79cd\u7ed3\u6784\u5316\u7684<strong>UML \u56fe<\/strong>\u7528\u4e8e\u53ef\u89c6\u5316\u9762\u5411\u5bf9\u8c61\u8f6f\u4ef6\u7cfb\u7edf\u7684\u9759\u6001\u67b6\u6784\u3002\u4f5c\u4e3a\u4e00\u79cd\u4e0d\u53ef\u6216\u7f3a\u7684<strong>UML \u56fe\u7c7b\u578b<\/strong>\uff0c\u5b83\u63cf\u7ed8\u4e86\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5404\u4e2a\u7c7b\u3001\u63a5\u53e3\u548c\u6570\u636e\u6a21\u578b\uff0c\u660e\u786e\u8bb0\u5f55\u5b83\u4eec\u7684\u5185\u90e8\u5b57\u6bb5\uff08\u5c5e\u6027\uff09\u3001\u64cd\u4f5c\u529f\u80fd\uff08\u65b9\u6cd5\uff09\u4ee5\u53ca\u5c06\u5b83\u4eec\u8fde\u63a5\u5728\u4e00\u8d77\u7684\u7ed3\u6784\u5173\u7cfb\u3002\u8fd9\u4e00\u84dd\u56fe\u5bf9\u8f6f\u4ef6\u5de5\u7a0b\u5e08\u81f3\u5173\u91cd\u8981\uff0c\u4ed6\u4eec\u9700\u8981\u5c06\u9ad8\u5c42\u6b21\u7684\u9886\u57df\u8bbe\u8ba1\u8f6c\u5316\u4e3a\u6e05\u6670\u3001\u53ef\u7ef4\u62a4\u7684\u5bf9\u8c61\u7ed3\u6784\u3002<\/p>\n<p>\u4f7f\u7528<strong>Mermaid.js<\/strong>\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u76f4\u89c2\u7684\u57fa\u4e8e\u6587\u672c\u7684\u5b9a\u4e49\u6765\u52fe\u52d2\u51fa\u4f60\u7684\u6570\u636e\u6a21\u578b\u548c\u7cfb\u7edf\u670d\u52a1\u3002\u5e03\u5c40\u5f15\u64ce\u4f1a\u81ea\u52a8\u8ba1\u7b97\u6846\u4f53\u5927\u5c0f\uff0c\u6784\u5efa\u6807\u51c6\u7684UML\u6570\u636e\u533a\u57df\uff0c\u5e76\u5728\u753b\u5e03\u4e0a\u81ea\u52a8\u5bf9\u9f50\u5173\u7cfb\u7bad\u5934\uff0c\u65e0\u9700\u4efb\u4f55\u624b\u52a8\u683c\u5f0f\u5316\u5f00\u9500\u3002<\/p>\n<h2>\u6838\u5fc3\u8bed\u6cd5\u6307\u5357\uff1a\u5143\u7d20\u4e0e\u7ed3\u6784<\/h2>\n<p>\u8981\u5728 Mermaid \u4e2d\u8bbe\u8ba1\u51fa\u51c6\u786e\u4e14\u7b26\u5408\u6807\u51c6\u7684 UML \u7c7b\u56fe\uff0c\u4f60\u5fc5\u987b\u638c\u63e1\u6210\u5458\u58f0\u660e\u3001\u8bbf\u95ee\u4fee\u9970\u7b26\u4ee5\u53ca\u7ed3\u6784\u5173\u7cfb\u7bad\u5934\u3002<\/p>\n<h3>1. \u58f0\u660e\u7c7b\u548c\u7c7b\u533a\u57df<\/h3>\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528\u4e24\u79cd\u6709\u6548\u683c\u5f0f\u6765\u5b9a\u4e49\u4e00\u4e2a\u7c7b\u3002\u5bf9\u4e8e\u7b80\u5355\u7c7b\uff0c\u4f7f\u7528<code>class<\/code>\u5173\u952e\u5b57\uff0c\u540e\u63a5\u7c7b\u540d\u3002\u5982\u679c\u4f60\u60f3\u7acb\u5373\u5305\u542b\u5b57\u6bb5\u548c\u65b9\u6cd5\uff0c\u8bf7\u4f7f\u7528\u5c3e\u968f\u7684\u5927\u62ec\u53f7\u6765\u521b\u5efa\u6e05\u6670\u7684\u4e3b\u4f53\u5757\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:eNpLzkksLnbJTEwvSszl5VIAgmSQiEJocWpRQFF+WmZOqkI1RAIEtINLijLz0hVKgdJ5ibmpmDKpuYmZOUjCpQUpiSWpriBRjbzUcjBDU6EsPzMFoqgWAOaDJdQ=\" 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 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:eNpLzkksLnbJTEwvSszl5VIAgmSQiEJocWpRQFF+WmZOqkI1RAIEtINLijLz0hVKgdJ5ibmpmDKpuYmZOUjCpQUpiSWpriBRjbzUcjBDU6EsPzMFoqgWAOaDJdQ=\" \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\">classDiagram\r\n    class UserProfile {\r\n        +String username\r\n        +String email\r\n        +updateEmail(newEmail) void\r\n    }<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNpLzkksLnbJTEwvSszl5VIAgmSQiEJocWpRQFF+WmZOqkI1RAIEtINLijLz0hVKgdJ5ibmpmDKpuYmZOUjCpQUpiSWpriBRjbzUcjBDU6EsPzMFoqgWAOaDJdQ=\" \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:eNpLzkksLnbJTEwvSszl5VIAgmSQiEJocWpRQFF+WmZOqkI1RAIEtINLijLz0hVKgdJ5ibmpmDKpuYmZOUjCpQUpiSWpriBRjbzUcjBDU6EsPzMFoqgWAOaDJdQ=\" 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 Mermaid<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"QKYoRec\"><img fetchpriority=\"high\" alt=\"\" class=\"alignnone size-full wp-image-618\" decoding=\"async\" fetchpriority=\"high\" height=\"184\" sizes=\"(max-width: 303px) 100vw, 303px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a19030c532c9.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a19030c532c9.png 303w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a19030c532c9-300x182.png 300w\" width=\"303\"\/><\/p>\n<h3>2. \u6dfb\u52a0\u53ef\u89c1\u6027\/\u8bbf\u95ee\u4fee\u9970\u7b26<\/h3>\n<p>\u4e3a\u4e86\u8bb0\u5f55\u6807\u51c6\u7684 UML \u5c01\u88c5\u89c4\u5219\uff0c\u8bf7\u5728\u5c5e\u6027\u6216\u65b9\u6cd5\u540d\u79f0\u524d\u76f4\u63a5\u653e\u7f6e\u7279\u5b9a\u7b26\u53f7\uff0c\u4ee5\u5b9a\u4e49\u5176\u53ef\u89c1\u6027\u7ea7\u522b\uff1a<\/p>\n<ul>\n<li><code>+<\/code> **\u516c\u5171:** \u53ef\u4ece\u4efb\u4f55\u5176\u4ed6\u7c7b\u8bbf\u95ee\u3002<\/li>\n<li><code>-<\/code> **\u79c1\u6709:** \u4ec5\u5728\u58f0\u660e\u7c7b\u5185\u90e8\u53ef\u8bbf\u95ee\u3002<\/li>\n<li><code>#<\/code> **\u53d7\u4fdd\u62a4:** \u5728\u7c7b\u53ca\u5176\u5b50\u7c7b\u4e2d\u53ef\u8bbf\u95ee\u3002<\/li>\n<li><code>~<\/code> **\u5305 \/ \u5185\u90e8:** \u5728\u540c\u4e00\u5305\u8fb9\u754c\u5185\u53ef\u8bbf\u95ee\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:eNpLzkksLnbJTEwvSszl5VIAgmSQiIJTYl62Y3JyfmleiUI1RAIEdFPyS5NyUhWSEnMS85JTERLKwSVFmXnpCokQPR75OSmpRQhp7fTUEieIHg1NBYghENlaANmyJWY=\" 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 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:eNpLzkksLnbJTEwvSszl5VIAgmSQiIJTYl62Y3JyfmleiUI1RAIEdFPyS5NyUhWSEnMS85JTERLKwSVFmXnpCokQPR75OSmpRQhp7fTUEieIHg1NBYghENlaANmyJWY=\" \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\">classDiagram\r\n    class BankAccount {\r\n        -double balance\r\n        #String accountHolder\r\n        +getBalance() double\r\n    }<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNpLzkksLnbJTEwvSszl5VIAgmSQiIJTYl62Y3JyfmleiUI1RAIEdFPyS5NyUhWSEnMS85JTERLKwSVFmXnpCokQPR75OSmpRQhp7fTUEieIHg1NBYghENlaANmyJWY=\" \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:eNpLzkksLnbJTEwvSszl5VIAgmSQiIJTYl62Y3JyfmleiUI1RAIEdFPyS5NyUhWSEnMS85JTERLKwSVFmXnpCokQPR75OSmpRQhp7fTUEieIHg1NBYghENlaANmyJWY=\" 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 Mermaid<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"XgBkvsQ\"><img alt=\"\" class=\"alignnone size-full wp-image-619\" decoding=\"async\" height=\"184\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a1903106882d.png\" width=\"249\"\/><\/p>\n<h3>3. \u638c\u63e1\u5173\u7cfb\u7bad\u5934\u4e0e\u7ee7\u627f\u94fe\u63a5<\/h3>\n<p>\u8981\u5c55\u793a\u7c7b\u5728 UML \u56fe\u6a21\u578b\u4e2d\u7684\u4ea4\u4e92\u65b9\u5f0f\uff0c\u8bf7\u4f7f\u7528\u4e13\u95e8\u7684\u5173\u7cfb\u5b57\u7b26\u4e32\u8fde\u63a5\u5b83\u4eec\u7684 ID\u3002\u5728 Mermaid \u4e2d\uff0c\u7ebf\u6761\u7684\u65b9\u5411\u5f88\u91cd\u8981\uff1a\u7bad\u5934\u6307\u5411\u7236\u7c7b\u6216\u5bb9\u5668\u7c7b\u3002<\/p>\n<ul>\n<li><strong>\u7ee7\u627f \/ \u6cdb\u5316\uff08\u865a\u7ebf\u6216\u5b9e\u7ebf\u7bad\u5934\uff09\uff1a<\/strong> <code>Child --|&gt; Parent<\/code>\uff08\u8868\u793a\u201c\u662f-\u4e00\u79cd\u201d\u5173\u7cfb\uff09\u3002<\/li>\n<li><strong>\u5b9e\u73b0 \/ \u5b9e\u65bd\uff1a<\/strong> <code>Class ..|&gt; Interface<\/code>\uff08\u8868\u793a\u4e00\u4e2a\u7c7b\u5c65\u884c\u4e86\u63a5\u53e3\u5951\u7ea6\uff09\u3002<\/li>\n<li><strong>\u7ec4\u5408\uff08\u5b9e\u5fc3\u83f1\u5f62\uff09\uff1a<\/strong> <code>Child --* Parent<\/code>\uff08\u8868\u793a\u4e25\u683c\u7684\u6240\u6709\u6743\u5173\u7cfb\uff1b\u5982\u679c\u7236\u7c7b\u6d88\u4ea1\uff0c\u5b50\u7c7b\u4e5f\u4f1a\u6d88\u4ea1\uff09\u3002<\/li>\n<li><strong>\u805a\u5408\uff08\u7a7a\u5fc3\u83f1\u5f62\uff09\uff1a<\/strong> <code>Child --o Parent<\/code>\uff08\u8868\u793a\u677e\u6563\u7684\u96c6\u5408\u5173\u7cfb\uff1b\u5b50\u7c7b\u53ef\u4ee5\u72ec\u7acb\u5b58\u5728\uff09\u3002<\/li>\n<li><strong>\u4f9d\u8d56\uff1a<\/strong> <code>ClassA ..&gt; ClassB<\/code>\uff08\u8868\u793a\u4e34\u65f6\u7684\u8fd0\u884c\u65f6\u5f15\u7528\uff09\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:eNpLzkksLnbJTEwvSszl5VIAAufEIgVd3Ro7hbDUjMzknFQFKwUlz7yM1KLMkmKFtKL8XCWIOte89My8VKBSLbAWkKpihYLEohKF\/DQlAHyeGXI=\" 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 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:eNpLzkksLnbJTEwvSszl5VIAAufEIgVd3Ro7hbDUjMzknFQFKwWl57uXP+vc\/6J9lRJEjWteemZeKlCZFlg5UMWzGeuftm57smPt81ktT3Y0vGxe8bSjTQkAImsmHg==\" \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\">classDiagram\r\n    Car --|&gt; Vehicle : \"\u7ee7\u627f\u81ea\"\r\n    Engine --* Car : \"\u662f\u5176\u4e2d\u7684\u4e00\u90e8\u5206\"<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNpLzkksLnbJTEwvSszl5VIAAufEIgVd3Ro7hbDUjMzknFQFKwWl57uXP+vc\/6J9lRJEjWteemZeKlCZFlg5UMWzGeuftm57smPt81ktT3Y0vGxe8bSjTQkAImsmHg==\" \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:eNpLzkksLnbJTEwvSszl5VIAAufEIgVd3Ro7hbDUjMzknFQFKwUlz7yM1KLMkmKFtKL8XCWIOte89My8VKBSLbAWkKpihYLEohKF\/DQlAHyeGXI=\" 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 Mermaid<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"wCxJKDf\"><img alt=\"\" class=\"alignnone size-full wp-image-620\" decoding=\"async\" height=\"416\" sizes=\"(max-width: 123px) 100vw, 123px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a1903163fbcf.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a1903163fbcf.png 123w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a1903163fbcf-89x300.png 89w\" width=\"123\"\/><\/p>\n<h2>\u6e05\u6670\u7c7b\u67b6\u6784\u5e03\u5c40\u7684\u6700\u4f73\u5b9e\u8df5<\/h2>\n<ul>\n<li><strong>\u89c6\u89c9\u4e0a\u5206\u7ec4\u7c7b\u6210\u5458\uff1a<\/strong>\u59cb\u7ec8\u5c06\u7c7b\u53d8\u91cf\u653e\u5728\u4e3b\u4f53\u5757\u7684\u9876\u90e8\uff0c\u5c06\u51fd\u6570\u653e\u5728\u5e95\u90e8\u3002\u8fd9\u79cd\u5e03\u5c40\u7b26\u5408\u6807\u51c6 IDE \u7684\u7c7b\u7ed3\u6784\uff0c\u4f7f\u4f60\u7684\u56fe\u8868\u7acb\u5373\u53d8\u5f97\u6613\u4e8e\u9605\u8bfb\u3002<\/li>\n<li><strong>\u6307\u5b9a\u8fd4\u56de\u7c7b\u578b\uff1a<\/strong> \u5728\u58f0\u660e\u65b9\u6cd5\u65f6\uff0c\u5c06\u8fd4\u56de\u7c7b\u578b\u9644\u52a0\u5230\u65b9\u6cd5\u884c\u7684\u672b\u5c3e\uff08\u4f8b\u5982\uff0c<code>+fetchData() DataSet<\/code>\uff09\u3002\u8fd9\u4e3a\u4f60\u7684\u5de5\u7a0b\u56e2\u961f\u63d0\u4f9b\u4e86\u7cbe\u786e\u7684\u5b9e\u73b0\u4e0a\u4e0b\u6587\u3002<\/li>\n<li><strong>\u4fdd\u6301\u591a\u91cd\u6027\u6e05\u6670\uff1a<\/strong> \u4e3a\u4e86\u8868\u793a\u6570\u7ec4\u6570\u91cf\u6216\u96c6\u5408\u5927\u5c0f\uff0c\u8bf7\u5c06\u591a\u91cd\u6027\u6587\u672c\u5b57\u7b26\u4e32\u76f4\u63a5\u9644\u52a0\u5230\u5173\u7cfb\u7ebf\u5305\u88c5\u5668\u4e0a\uff08\u4f8b\u5982\uff0c<code>Customer \"1\" --o \"many\" Order<\/code>).<\/li>\n<\/ul>\n<h2>\u73b0\u5b9e\u4e16\u754c\u4e2d\u7684 Mermaid.js \u7c7b\u56fe\u793a\u4f8b<\/h2>\n<h3>\u793a\u4f8b 1\uff1a\u652f\u4ed8\u7f51\u5173\u9886\u57df\u5b50\u7cfb\u7edf\uff08\u5c01\u88c5\u4e0e\u63a5\u53e3\uff09<\/h3>\n<p>\u6b64\u529f\u80fd\u84dd\u56fe\u5efa\u6a21\u4e86\u4e00\u4e2a\u5728\u7ebf\u7ed3\u8d26\u9886\u57df\u670d\u52a1\u3002\u5b83\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u8bbf\u95ee\u4fee\u9970\u7b26\u3001\u5206\u7ec4\u7c7b\u6210\u5458\u4ee5\u53ca\u6e05\u6670\u5730\u5b9e\u73b0\u63a5\u53e3\u5173\u7cfb\u3002<\/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:eNq1UUFqw0AMvAfyhyWnhNI8IASfAsX0Ymj7AHVXcRd2pUUrtzVp\/147ToiTlNJLdBzNSDOSDZDzxkMtEKcT05XtEVNBG5G0EraYM4vZDd2+1mtPirIFi0Vxgu\/SQD5I5xC5IV2YV+aAQCOi4LYhd+TpJ5XugvY9nYzdPKn4hA+g+AHt2Mp936HaQPKP2F7jSC5x5\/ZFwm2M7pcFrp8FKINVzzTPCtrkhXln736N0w2sIPwRJ6LYNyAt3Y3Pe37Y5fKruP78yszKmAL2aJ4NuvME\/9H9AGFPu8s=\" 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 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:eNq1kU1uwkAMhfdI3GHECoTKARDKqhJC3URqewAzY9KRJnbkcdpGwBU4Qo9Q9VJVr9GkoSL8qF3h5fN7M59tGyDGWw+ZQN7vmbpso5gUqhxJU2GLMbKYddttajbzpCgrsJgkB3lctOZ9dAg5l6Qjs2QOCNQxCq5Kcr8+faWFO7Ft+70uzb2KL3AOii9QdVFumg5lBgp\/h9W5juQKrmkfJVwH9OezwNmDAEWw6pmGUUHLODLP7N3FceoHUwh\/jJOj2CcgXbgrr\/d4sZPJJjm\/\/NQMPt\/fvnYfgzZzTP9f5hvuMbw7\" \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\">classDiagram\r\n    class PaymentProcessor {\r\n        &lt;&lt;interface&gt;&gt;\r\n        +processPayment(amount) boolean\r\n        +refundPayment(txnId) boolean\r\n    }\r\n\r\n    class StripeGateway {\r\n        -String apiKey\r\n        -String endpointUrl\r\n        +processPayment(amount) boolean\r\n        +refundPayment(txnId) boolean\r\n        -logTransaction(status) void\r\n    }\r\n\r\n    class PayPalGateway {\r\n        -String merchantId\r\n        +processPayment(amount) boolean\r\n        +refundPayment(txnId) boolean\r\n    }\r\n\r\n    StripeGateway ..|&gt; PaymentProcessor : \"\u5b9e\u73b0\"\r\n    PayPalGateway ..|&gt; PaymentProcessor : \"\u5b9e\u73b0\"<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNq1kU1uwkAMhfdI3GHECoTKARDKqhJC3URqewAzY9KRJnbkcdpGwBU4Qo9Q9VJVr9GkoSL8qF3h5fN7M59tGyDGWw+ZQN7vmbpso5gUqhxJU2GLMbKYddttajbzpCgrsJgkB3lctOZ9dAg5l6Qjs2QOCNQxCq5Kcr8+faWFO7Ft+70uzb2KL3AOii9QdVFumg5lBgp\/h9W5juQKrmkfJVwH9OezwNmDAEWw6pmGUUHLODLP7N3FceoHUwh\/jJOj2CcgXbgrr\/d4sZPJJjm\/\/NQMPt\/fvnYfgzZzTP9f5hvuMbw7\" \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:eNq1UUFqw0AMvAfyhyWnhNI8IASfAsX0Ymj7AHVXcRd2pUUrtzVp\/147ToiTlNJLdBzNSDOSDZDzxkMtEKcT05XtEVNBG5G0EraYM4vZDd2+1mtPirIFi0Vxgu\/SQD5I5xC5IV2YV+aAQCOi4LYhd+TpJ5XugvY9nYzdPKn4hA+g+AHt2Mp936HaQPKP2F7jSC5x5\/ZFwm2M7pcFrp8FKINVzzTPCtrkhXln736N0w2sIPwRJ6LYNyAt3Y3Pe37Y5fKruP78yszKmAL2aJ4NuvME\/9H9AGFPu8s=\" 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 Mermaid<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"dKUznWo\"><img loading=\"lazy\" alt=\"\" class=\"alignnone size-full wp-image-621\" decoding=\"async\" height=\"480\" loading=\"lazy\" sizes=\"auto, (max-width: 751px) 100vw, 751px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a19031bd8def.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a19031bd8def.png 751w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a19031bd8def-300x192.png 300w\" width=\"751\"\/><\/p>\n<p><strong>\u8bed\u6cd5\u89e3\u6790\uff1a<\/strong> \u8fd9\u4e2a <code>&lt;&lt;interface&gt;&gt;<\/code> \u6807\u7b7e\u660e\u786e\u5c06 `PaymentProcessor` \u6807\u8bb0\u4e3a\u9ad8\u5c42\u7ea7\u7684\u67b6\u6784\u5951\u7ea6\u3002\u4e24\u4e2a\u5177\u4f53\u7684\u7f51\u5173\u5b9e\u73b0\u7c7b\u4f7f\u7528\u79c1\u6709\u5b57\u6bb5\uff08<code>-apiKey<\/code>\uff09\u6765\u5b58\u50a8\u654f\u611f\u51ed\u8bc1\uff0c\u540c\u65f6\u516c\u5f00\u516c\u5171\u7684\u652f\u4ed8\u64cd\u4f5c\uff08<code>+processPayment<\/code>\uff09\uff0c\u5e76\u901a\u8fc7\u5b9e\u73b0\u7bad\u5934\uff08<code>..|&gt;<\/code>).<\/p>\n<h3>\u793a\u4f8b 2\uff1a\u4f01\u4e1a\u7ea7\u8ba2\u5355\u5904\u7406\u5f15\u64ce\uff08\u7ec4\u5408\u4e0e\u591a\u91cd\u6027\uff09<\/h3>\n<p>\u6b64\u9ad8\u7ea7\u7cfb\u7edf\u84dd\u56fe\u6620\u5c04\u4e86\u4e00\u4e2a\u590d\u6742\u7684\u7535\u5b50\u5546\u52a1\u8ba2\u5355\u7ba1\u7406\u67b6\u6784\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5728\u591a\u4e2a\u76f8\u4e92\u5173\u8054\u7684\u7c7b\u4e4b\u95f4\u8bb0\u5f55\u7ed3\u6784\u5f52\u5c5e\u5173\u7cfb\u548c\u5bf9\u8c61\u6570\u91cf\u3002<\/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:eNp1UctqAzEMvAfyD8KnNmEDufZQKJtLTi2k\/QDVFqnBj62spYTQf6\/3kcTbbX2wYEbjGcnaYUo7i0dGv1xAPrpDoG6TRE8M5wHtztoGAT0Se1MQB2EbjhDQU4E2DjU9syG+u4e+DuT3clFa9czMJ3boxGSHQmDyVTPlu6Cq0T\/riAO6g6C0qZBqdLp1WfQaBV1OY2L77uj\/OHshP4tkMzhJ1IGfLQaxcirg4XFo2Gp6IX4LVv50ejKGKdfzfJNJmEjmuJ46jWgTUx6rjub3RNdfVFsFVRVBeQwnNa78AVT8CkkNvbe51XazWXX9q153bdbRZye6CC7xh7cfb33pwzYJJKofTEiiUg==\" 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 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:eNp1UbtOAzEQ7CPlHyxXEHSR0lIgoUuTCqTAByz2KrLksw97r4giOiRAFEBPi\/gA6PgejnwGvgeJj0tceKWZHc\/sWmjwfqpg4SAbDlg4okJYWniyGTq2atDqHClDTLTETEbEnJwyC2YgwwjNNQg8cxLdwSGra0PeDAexVc30fGyFdkymQMhkuFKH4Y6opPUPOnQG9JyACh9JBWhR6CC6sAQ6pJG2uNK4P86MMOtFUgHsJKrA6wIMKVpGcPM4y50SeI7u0ija6XQqpcNQV\/1NenKI1MdF16lFc+vDWKmV\/yfa\/CKfcJYklvEMzJK3Kz9mvHx8K18feNO9nZxPxuNRpRjVyk37z9dtef\/ctv\/Fb94+2XZ9P72sP9\/Xdx\/8F+VHqKc=\" \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\">classDiagram\r\n    class Customer {\r\n        +int customerId\r\n        +String name\r\n        +placeOrder() Order\r\n    }\r\n\r\n    class Order {\r\n        +int orderId\r\n        +Date dateCreated\r\n        -String internalStatus\r\n        +calculateTotal() double\r\n    }\r\n\r\n    class OrderItem {\r\n        +int itemId\r\n        +int quantity\r\n        +double pricePerUnit\r\n    }\r\n\r\n    class Address {\r\n        +String street\r\n        +String city\r\n        +String postalCode\r\n    }\r\n\r\n    Customer \"1\" --o \"many\" Order : \"\u62e5\u6709\"\r\n    OrderItem \"1..*\" --* \"1\" Order : \"\u7ec4\u6210\"\r\n    Address \"1\" --&gt; Order : \"\u53d1\u8d27\u81f3\"<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNp1UbtOAzEQ7CPlHyxXEHSR0lIgoUuTCqTAByz2KrLksw97r4giOiRAFEBPi\/gA6PgejnwGvgeJj0tceKWZHc\/sWmjwfqpg4SAbDlg4okJYWniyGTq2atDqHClDTLTETEbEnJwyC2YgwwjNNQg8cxLdwSGra0PeDAexVc30fGyFdkymQMhkuFKH4Y6opPUPOnQG9JyACh9JBWhR6CC6sAQ6pJG2uNK4P86MMOtFUgHsJKrA6wIMKVpGcPM4y50SeI7u0ija6XQqpcNQV\/1NenKI1MdF16lFc+vDWKmV\/yfa\/CKfcJYklvEMzJK3Kz9mvHx8K18feNO9nZxPxuNRpRjVyk37z9dtef\/ctv\/Fb94+2XZ9P72sP9\/Xdx\/8F+VHqKc=\" \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:eNp1UctqAzEMvAfyD8KnNmEDufZQKJtLTi2k\/QDVFqnBj62spYTQf6\/3kcTbbX2wYEbjGcnaYUo7i0dGv1xAPrpDoG6TRE8M5wHtztoGAT0Se1MQB2EbjhDQU4E2DjU9syG+u4e+DuT3clFa9czMJ3boxGSHQmDyVTPlu6Cq0T\/riAO6g6C0qZBqdLp1WfQaBV1OY2L77uj\/OHshP4tkMzhJ1IGfLQaxcirg4XFo2Gp6IX4LVv50ejKGKdfzfJNJmEjmuJ46jWgTUx6rjub3RNdfVFsFVRVBeQwnNa78AVT8CkkNvbe51XazWXX9q153bdbRZye6CC7xh7cfb33pwzYJJKofTEiiUg==\" 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>\u5728VPasCode\u4e2d\u7f16\u8f91Mermaid<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"nhNYQKB\"><img loading=\"lazy\" alt=\"\" class=\"alignnone size-full wp-image-622\" decoding=\"async\" height=\"450\" loading=\"lazy\" sizes=\"auto, (max-width: 731px) 100vw, 731px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a190321054b5.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a190321054b5.png 731w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/05\/img_6a190321054b5-300x185.png 300w\" width=\"731\"\/><\/p>\n<p><strong>\u8bed\u6cd5\u5206\u89e3\uff1a<\/strong>\u6b64\u793a\u4f8b\u8bf4\u660e\u4e86\u805a\u5408\u4e0e\u7ec4\u5408\u4e4b\u95f4\u7684\u533a\u522b\u3002\u5b9e\u5fc3\u83f1\u5f62\u7bad\u5934\uff08<code>--*<\/code>) \u8868\u793a `OrderItem` \u4e0e `Order` \u7d27\u5bc6\u7ed1\u5b9a\uff08\u5982\u679c\u5220\u9664\u8ba2\u5355\uff0c\u5176\u5404\u4e2a\u660e\u7ec6\u9879\u4e5f\u4f1a\u88ab\u9500\u6bc1\uff09\u3002\u76f8\u53cd\uff0c\u7a7a\u5fc3\u83f1\u5f62\u7bad\u5934\uff08<code>--o<\/code>) \u8868\u793a `Customer` \u62e5\u6709\u591a\u4e2a\u8ba2\u5355\uff0c\u4f46\u8fd9\u4e24\u4e2a\u5b9e\u4f53\u53ef\u4ee5\u72ec\u7acb\u5b58\u5728\u3002\u591a\u91cd\u6027\u5b57\u7b26\u4e32\uff08\u5982 <code>\"1..*\"<\/code>) \u5b9a\u4e49\u4e86\u7cfb\u7edf\u7684\u5173\u8054\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ec0\u4e48\u662f\u7c7b\u56fe\uff1f \u4e00\u4e2a\u7c7b\u56fe\u662f\u4e00\u79cd\u7ed3\u6784\u5316\u7684UML \u56fe\u7528\u4e8e\u53ef\u89c6\u5316\u9762\u5411\u5bf9\u8c61\u8f6f\u4ef6\u7cfb\u7edf\u7684\u9759\u6001\u67b6&#8230;<\/p>\n","protected":false},"author":4,"featured_media":2109,"parent":0,"menu_order":2,"template":"","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"ld_collection":[14],"class_list":["post-2108","ld_docs","type-ld_docs","status-publish","has-post-thumbnail","hentry","ld_collection-vpascode-docs"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mermaid Class Diagram Syntax | VPasCode Text to Diagram Guide<\/title>\n<meta name=\"description\" content=\"Document code structures and object relationships using Mermaid class diagrams in VPasCode, a free diagram-as-code tool.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vpascode.com\/cn\/docs\/vpascode-docs\/mermaid-js-class-diagram-syntax-guide\/\" \/>\n<meta property=\"og:locale\" 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