{"id":47997,"date":"2023-01-25T04:30:10","date_gmt":"2023-06-28T19:27:34","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8amplify%e4%b8%ad%e4%bb%a5%e6%9d%a1%e4%bb%b6%e7%ad%9b%e9%80%89%e7%9a%84%e6%96%b9%e5%bc%8f%e5%ae%9e%e6%97%b6%e8%ae%a2%e9%98%85%e6%9b%b4%e6%96%b0%e3%80%82\/"},"modified":"2024-04-29T11:22:36","modified_gmt":"2024-04-29T03:22:36","slug":"%e5%9c%a8amplify%e4%b8%ad%e4%bb%a5%e6%9d%a1%e4%bb%b6%e7%ad%9b%e9%80%89%e7%9a%84%e6%96%b9%e5%bc%8f%e5%ae%9e%e6%97%b6%e8%ae%a2%e9%98%85%e6%9b%b4%e6%96%b0%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8amplify%e4%b8%ad%e4%bb%a5%e6%9d%a1%e4%bb%b6%e7%ad%9b%e9%80%89%e7%9a%84%e6%96%b9%e5%bc%8f%e5%ae%9e%e6%97%b6%e8%ae%a2%e9%98%85%e6%9b%b4%e6%96%b0%e3%80%82\/","title":{"rendered":"\u5728Amplify\u4e2d\u4ee5\u6761\u4ef6\u7b5b\u9009\u7684\u65b9\u5f0f\u5b9e\u65f6\u8ba2\u9605\u66f4\u65b0"},"content":{"rendered":"<h1>\u7b80\u800c\u8a00\u4e4b<\/h1>\n<p>Amplify\u5728@model\u4e2d\u81ea\u52a8\u751f\u6210\u7684\u8ba2\u9605\u4f1a\u81ea\u52a8\u901a\u77e5\u6240\u6709\u4e8b\u60c5\u3002\u4ee5\u804a\u5929\u4e3a\u4f8b\uff0c\u65e0\u8bba\u54ea\u4e2a\u804a\u5929\u5ba4\u53d1\u5e03\u4e86\u804a\u5929\u6d88\u606f\uff0c\u90fd\u4f1a\u6536\u5230\u901a\u77e5\u3002\u4e0d\u8fc7\u5b9e\u9645\u4e0a\uff0c\u5e94\u8be5\u53ea\u60f3\u63a5\u6536\u7279\u5b9a\u804a\u5929\u5ba4\u7684\u901a\u77e5\u3002<\/p>\n<p>\u8fd9\u79cd\u60c5\u51b5\u5728\u516c\u5f0f\u6587\u4ef6\u4e2d\u6709\u8bf4\u660e\uff0c\u4f46\u662f\u8bf4\u660e\u4e0d\u591f\u6e05\u6670\uff0c\u800c\u4e14\u6ca1\u6709\u5199\u5230\u6700\u540e\uff0c\u6240\u4ee5\u6211\u505a\u4e86\u4e2a\u7b14\u8bb0\u6765\u8bb0\u5f55\u65b9\u6cd5\u3002<\/p>\n<h1>\u524d\u63d0 (Qian ti)<\/h1>\n<p>\u5047\u8bbe\u5b58\u5728\u5982\u4e0b\u6a21\u5f0f\uff1a<br \/>\nChat\u662f\u6307\u804a\u5929\u5ba4\uff0cChatMessage\u662f\u5728\u5176\u4e2d\u8fdb\u884c\u4ea4\u6d41\u7684\u7528\u6237\u6d88\u606f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Chat<\/span> <span class=\"err\">@<\/span><span class=\"n\">model<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n  <span class=\"n\">title<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">ChatMessage<\/span> <span class=\"err\">@<\/span><span class=\"n\">model<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n  <span class=\"n\">chatId<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n  <span class=\"n\">body<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u6b65\u9aa4<\/h1>\n<h2>\u7981\u7528Amplify\u7684\u81ea\u52a8\u8ba2\u9605\u751f\u6210\u3002<\/h2>\n<p>\u9996\u5148\uff0c\u5728 ChatMessage \u7684 @model \u4e2d\u6dfb\u52a0 subscriptions: null\uff0c\u4ee5\u9632\u6b62\u81ea\u52a8\u521b\u5efa Subscription\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">ChatMessage<\/span> <span class=\"err\">@<\/span><span class=\"n\">model<\/span><span class=\"p\">(<\/span><span class=\"n\">subscriptions<\/span><span class=\"p\">:<\/span> <span class=\"n\">null<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span> <span class=\"c\"># &lt;-- \u3053\u308c<\/span>\r\n  <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n  <span class=\"n\">chatId<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">!<\/span>\r\n  <span class=\"n\">body<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u9636\u6bb5\u6267\u884c amplify push\u3002\u5982\u679c\u4e0d\u8fd9\u6837\u505a\uff0c\u540e\u7eed\u7684\u6b65\u9aa4\u4e2d\u5f53\u63a8\u9001\u81ea\u5b9a\u4e49\u5b9a\u4e49\u7684Subscription\u65f6\uff0c\u5c06\u4f1a\u4e0eAmplify\u5df2\u7ecf\u81ea\u52a8\u751f\u6210\u7684Subscription\u53d1\u751f\u51b2\u7a81\u5e76\u5bfc\u81f4\u9519\u8bef\u3002<\/p>\n<pre class=\"post-pre\"><code>% amplify push\r\n<\/code><\/pre>\n<h2>\u5b9a\u4e49\u4e00\u4e2a\u5e26\u6709\u53c2\u6570\u7684Subscription<\/h2>\n<p>\u5199\u4e00\u4e2a\u4ee5 chatId \u4f5c\u4e3a\u53c2\u6570\u7684 Subscription\u3002\u5f53\u7136\uff0c\u9700\u8981\u6307\u5b9a ChatMessage \u7c7b\u578b\u4e2d\u5b58\u5728\u7684\u5b57\u6bb5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Subscription<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">onCreateChatMessage<\/span><span class=\"p\">(<\/span><span class=\"n\">chatId<\/span><span class=\"p\">:<\/span> <span class=\"nb\">ID<\/span><span class=\"p\">):<\/span> <span class=\"n\">ChatMessage<\/span> <span class=\"err\">@<\/span><span class=\"n\">aws_subscribe<\/span><span class=\"p\">(<\/span><span class=\"n\">mutations<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"err\">\"<\/span><span class=\"n\">createChatMessage<\/span><span class=\"err\">\"<\/span><span class=\"p\">])<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>`onCreateChatMessage` \u51fd\u6570\u7684\u8fd4\u56de\u7c7b\u578b\u662f `ChatMessage`\uff0c\u56e0\u6b64\u5b83\u662f\u4e00\u4e2a `ChatMessage` \u5bf9\u8c61\u3002<br \/>\n\u5728 `@aws_subscribe` \u4e2d\uff0c\u6211\u4eec\u9700\u8981\u6307\u5b9a\u5e0c\u671b\u8ba2\u9605\u7684 `mutation`\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5b83\u662f `createChatMessage`\u3002<\/p>\n<p>\u4f7f\u7528\u8fd9\u4e2a\u547d\u4ee4\u518d\u6b21\u6267\u884c amplify push\u3002<\/p>\n<h2>\u53ea\u9700\u8981\u4e00\u4e2a\u9009\u9879\uff0c\u5728\u5ba2\u6237\u7aef\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528<\/h2>\n<p>\u5f88\u5e78\u8fd0\u5730\uff0c\u7531\u4e8eAmplify\u4f1a\u81ea\u52a8\u751f\u6210\u5176\u4ed6\u4e00\u5207\uff0c\u56e0\u6b64\u4e4b\u540e\u53ea\u9700\u8981\u4ece\u5ba2\u6237\u7aef\u5e94\u7528\u7a0b\u5e8f\u8c03\u7528\u5373\u53ef\u3002\u5bf9\u4e8eJS\uff0c\u4ee3\u7801\u5982\u4e0b\u6240\u793a\u3002\u4f7f\u7528graphqlOperation\u51fd\u6570\uff0c\u53ef\u89c1\u6211\u4eec\u6dfb\u52a0\u7684chatId\u53c2\u6570\u662f\u5982\u4f55\u4f20\u9012\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">API<\/span><span class=\"p\">,<\/span> <span class=\"nx\">graphqlOperation<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">aws-amplify<\/span><span class=\"dl\">'<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u901a\u77e5\u306e\u53d7\u3051\u53d6\u308a\u3092\u958b\u59cb\u3059\u308b<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">subscription<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">API<\/span><span class=\"p\">.<\/span><span class=\"nx\">graphql<\/span><span class=\"p\">(<\/span>\r\n  <span class=\"nx\">graphqlOperation<\/span><span class=\"p\">(<\/span><span class=\"nx\">subscriptions<\/span><span class=\"p\">.<\/span><span class=\"nx\">onCreateChatMessage<\/span><span class=\"p\">,<\/span> <span class=\"p\">{<\/span> <span class=\"na\">chatId<\/span><span class=\"p\">:<\/span> <span class=\"nx\">currChatId<\/span> <span class=\"p\">}),<\/span>\r\n<span class=\"p\">).<\/span><span class=\"nx\">subscribe<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">next<\/span><span class=\"p\">:<\/span> <span class=\"p\">({<\/span> <span class=\"nx\">provider<\/span><span class=\"p\">,<\/span> <span class=\"nx\">value<\/span> <span class=\"p\">})<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nx\">console<\/span><span class=\"p\">.<\/span><span class=\"nx\">log<\/span><span class=\"p\">(<\/span><span class=\"nx\">value<\/span><span class=\"p\">.<\/span><span class=\"nx\">data<\/span><span class=\"p\">.<\/span><span class=\"nx\">onCreateChatMessage<\/span><span class=\"p\">)<\/span>\r\n  <span class=\"p\">},<\/span>\r\n  <span class=\"na\">error<\/span><span class=\"p\">:<\/span> <span class=\"nx\">error<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">console<\/span><span class=\"p\">.<\/span><span class=\"nx\">warn<\/span><span class=\"p\">(<\/span><span class=\"nx\">error<\/span><span class=\"p\">),<\/span>\r\n<span class=\"p\">})<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u901a\u77e5\u3092\u6b62\u3081\u308b\uff08SPA\u306a\u3069\u3067\u66f4\u65b0\u304c\u4e0d\u8981\u306b\u306a\u3063\u305f\u5834\u5408\u306a\u3069\uff09<\/span>\r\n<span class=\"nx\">subscription<\/span><span class=\"p\">.<\/span><span class=\"nx\">unsubscribe<\/span><span class=\"p\">()<\/span>\r\n<\/code><\/pre>\n<h2>\u7ed9\u4e88\u989d\u5916\u7684\u4e1c\u897f<\/h2>\n<p>\u7531\u6b64\u5f15\u53d1\u7684Amplify\u751f\u6210\u4ee3\u7801\u7684\u53d8\u5316\u5982\u4e0b\u3002<\/p>\n<p>amplify\/backend\/api\/myapi\/build\/schema.graphql \u306e Subscription \u304c\u81ea\u5206\u3067\u8ffd\u52a0\u3057\u305f onCreateChatMessage \u306b\u7f6e\u304d\u63db\u308f\u308b\u3002<br \/>\n\u81ea\u52d5\u751f\u6210\u3057\u3066\u304f\u308c\u308bsubscription\u306eGraphQL\uff08\u4eca\u56de\u306e\u5834\u5408onCreateChatMessage\uff09\u304c\u30d1\u30e9\u30e1\u30fc\u30bf\u4ed8\u304d\u306b\u5909\u308f\u308b\u3002\uff08JS\u306e\u5834\u5408\u3001 graphql\/subscriptions.js \u306b\u3042\u305f\u308b\u3002\uff09<\/p>\n<p>\u89e3\u6790\u5668\u6ca1\u6709\u53d8\u5316\u3002\u4f3c\u4e4e\u53ea\u9700\u901a\u8fc7\u66f4\u6539GraphQL\u6a21\u5f0f\u548cGraphQL\u8bed\u53e5\u6765\u6dfb\u52a0\u53c2\u6570\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u800c\u8a00\u4e4b Amplify\u5728@model\u4e2d\u81ea\u52a8\u751f\u6210\u7684\u8ba2\u9605\u4f1a\u81ea\u52a8\u901a\u77e5\u6240\u6709\u4e8b\u60c5\u3002\u4ee5\u804a\u5929\u4e3a\u4f8b\uff0c\u65e0\u8bba\u54ea\u4e2a\u804a\u5929\u5ba4\u53d1\u5e03\u4e86\u804a\u5929 [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-47997","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5728Amplify\u4e2d\u4ee5\u6761\u4ef6\u7b5b\u9009\u7684\u65b9\u5f0f\u5b9e\u65f6\u8ba2\u9605\u66f4\u65b0 - Blog - Silicon Cloud<\/title>\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.silicloud.com\/zh\/blog\/\u5728amplify\u4e2d\u4ee5\u6761\u4ef6\u7b5b\u9009\u7684\u65b9\u5f0f\u5b9e\u65f6\u8ba2\u9605\u66f4\u65b0\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5728Amplify\u4e2d\u4ee5\u6761\u4ef6\u7b5b\u9009\u7684\u65b9\u5f0f\u5b9e\u65f6\u8ba2\u9605\u66f4\u65b0\" \/>\n<meta property=\"og:description\" content=\"\u7b80\u800c\u8a00\u4e4b Amplify\u5728@model\u4e2d\u81ea\u52a8\u751f\u6210\u7684\u8ba2\u9605\u4f1a\u81ea\u52a8\u901a\u77e5\u6240\u6709\u4e8b\u60c5\u3002\u4ee5\u804a\u5929\u4e3a\u4f8b\uff0c\u65e0\u8bba\u54ea\u4e2a\u804a\u5929\u5ba4\u53d1\u5e03\u4e86\u804a\u5929 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5728amplify\u4e2d\u4ee5\u6761\u4ef6\u7b5b\u9009\u7684\u65b9\u5f0f\u5b9e\u65f6\u8ba2\u9605\u66f4\u65b0\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-06-28T19:27:34+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-29T03:22:36+00:00\" \/>\n<meta name=\"author\" content=\"\u9038, \u79d1\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u9038, \u79d1\" \/>\n\t<meta name=\"twitter:label2\" 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