{"id":32017,"date":"2023-08-04T08:03:18","date_gmt":"2023-02-16T21:54:00","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8node-js%e5%92%8cexpress%e6%9d%a5%e5%88%9b%e5%bb%baline%e6%9c%ba%e5%99%a8%e4%ba%ba\/"},"modified":"2024-04-30T16:54:31","modified_gmt":"2024-04-30T08:54:31","slug":"%e4%bd%bf%e7%94%a8node-js%e5%92%8cexpress%e6%9d%a5%e5%88%9b%e5%bb%baline%e6%9c%ba%e5%99%a8%e4%ba%ba","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8node-js%e5%92%8cexpress%e6%9d%a5%e5%88%9b%e5%bb%baline%e6%9c%ba%e5%99%a8%e4%ba%ba\/","title":{"rendered":"\u4f7f\u7528Node.js\u548cExpress\u6765\u521b\u5efaLine\u673a\u5668\u4eba"},"content":{"rendered":"
const<\/span> express<\/span> =<\/span> require<\/span>(<\/span>'<\/span>express<\/span>'<\/span>)<\/span>\r\nconst<\/span> request<\/span> =<\/span> require<\/span>(<\/span>'<\/span>request<\/span>'<\/span>)<\/span>\r\nconst<\/span> bodyParser<\/span> =<\/span> require<\/span>(<\/span>'<\/span>body-parser<\/span>'<\/span>);<\/span>\r\nconst<\/span> crypto<\/span> =<\/span> require<\/span>(<\/span>\"<\/span>crypto<\/span>\"<\/span>);<\/span>\r\nconst<\/span> app<\/span> =<\/span> express<\/span>()<\/span>\r\nconst<\/span> port<\/span> =<\/span> process<\/span>.<\/span>env<\/span>.<\/span>PORT<\/span> ||<\/span> 3000<\/span>;<\/span>\r\n\r\napp<\/span>.<\/span>use<\/span>(<\/span>bodyParser<\/span>.<\/span>urlencoded<\/span>({<\/span>\r\n  extended<\/span>:<\/span> true<\/span>\r\n}));<\/span>\r\napp<\/span>.<\/span>use<\/span>(<\/span>bodyParser<\/span>.<\/span>json<\/span>());<\/span>\r\napp<\/span>.<\/span>get<\/span>(<\/span>'<\/span>\/<\/span>'<\/span>,<\/span> (<\/span>req<\/span>,<\/span> res<\/span>)<\/span> =><\/span> {<\/span>\r\n  res<\/span>.<\/span>send<\/span>(<\/span>'<\/span>Hello world<\/span>'<\/span>)<\/span>\r\n})<\/span>\r\napp<\/span>.<\/span>post<\/span>(<\/span>'<\/span>\/hook<\/span>'<\/span>,<\/span> function<\/span> (<\/span>req<\/span>,<\/span> res<\/span>)<\/span> {<\/span>\r\n\r\n  if<\/span> (<\/span>!<\/span>validateSignature<\/span>(<\/span>req<\/span>.<\/span>headers<\/span>[<\/span>'<\/span>x-line-signature<\/span>'<\/span>],<\/span> req<\/span>.<\/span>body<\/span>))<\/span> {<\/span>\r\n    return<\/span>;<\/span>\r\n  }<\/span>\r\n\r\n  const<\/span> events<\/span> =<\/span> req<\/span>.<\/span>body<\/span>.<\/span>events<\/span>;<\/span>\r\n  const<\/span> userId<\/span> =<\/span> events<\/span>[<\/span>0<\/span>].<\/span>source<\/span>.<\/span>userId<\/span>;<\/span>\r\n  const<\/span> type<\/span> =<\/span> events<\/span>[<\/span>0<\/span>].<\/span>source<\/span>.<\/span>type<\/span>;<\/span>\r\n  const<\/span> message<\/span> =<\/span> events<\/span>[<\/span>0<\/span>].<\/span>message<\/span>;<\/span>\r\n\r\n  if<\/span>(<\/span>type<\/span> ==<\/span> '<\/span>user<\/span>'<\/span>){<\/span>\r\n    request<\/span>.<\/span>get<\/span>(<\/span> getProfileOption<\/span>(<\/span>userId<\/span>),<\/span> function<\/span> (<\/span>error<\/span>,<\/span> response<\/span>,<\/span> body<\/span>)<\/span> {<\/span>\r\n      if<\/span> (<\/span>!<\/span>error<\/span> &&<\/span> response<\/span>.<\/span>statusCode<\/span> ==<\/span> 200<\/span>)<\/span> {<\/span>\r\n        const<\/span> options<\/span> =<\/span> {<\/span>\r\n          url<\/span>:<\/span> '<\/span>https:\/\/api.line.me\/v2\/bot\/message\/reply<\/span>'<\/span>,<\/span>\r\n          headers<\/span>:<\/span> {<\/span>\r\n            '<\/span>Content-Type<\/span>'<\/span>:<\/span> '<\/span>application\/json<\/span>'<\/span>,<\/span>\r\n            '<\/span>Authorization<\/span>'<\/span>:<\/span> '<\/span>Bearer {<\/span>'<\/span> +<\/span> process<\/span>.<\/span>env<\/span>.<\/span>LINE_CHANNEL_ACCESS_TOKEN<\/span> +<\/span> '<\/span>}<\/span>'<\/span>,<\/span>\r\n          },<\/span>\r\n          json<\/span>:<\/span> true<\/span>,<\/span>\r\n          body<\/span>:<\/span> {<\/span>\r\n            '<\/span>replyToken<\/span>'<\/span>:<\/span> req<\/span>.<\/span>body<\/span>[<\/span>'<\/span>events<\/span>'<\/span>][<\/span>0<\/span>][<\/span>'<\/span>replyToken<\/span>'<\/span>],<\/span>\r\n            '<\/span>messages<\/span>'<\/span>:<\/span> [{<\/span>\r\n              \"<\/span>type<\/span>\"<\/span>:<\/span> \"<\/span>text<\/span>\"<\/span>,<\/span>\r\n              \"<\/span>text<\/span>\"<\/span>:<\/span> message<\/span>.<\/span>text<\/span> +<\/span> '<\/span> \u3063\u3066\u8a00\u3063\u305f\u306e\uff1f<\/span>\\n<\/span>'<\/span> +<\/span> body<\/span>[<\/span>'<\/span>displayName<\/span>'<\/span>]<\/span> +<\/span> '<\/span>\u3055\u3093<\/span>'<\/span>\r\n            }]<\/span>\r\n          }<\/span>\r\n        };<\/span>\r\n        request<\/span>.<\/span>post<\/span>(<\/span>options<\/span>,<\/span> function<\/span> (<\/span>error<\/span>,<\/span> response<\/span>,<\/span> body<\/span>)<\/span> {<\/span>\r\n          if<\/span> (<\/span>!<\/span>error<\/span> &&<\/span> response<\/span>.<\/span>statusCode<\/span> ==<\/span> 200<\/span>)<\/span> {<\/span>\r\n            console<\/span>.<\/span>log<\/span>(<\/span>'<\/span>success<\/span>'<\/span>);<\/span>\r\n          }<\/span>\r\n        });<\/span>\r\n      }<\/span>\r\n    })<\/span>\r\n  }<\/span>\r\n})<\/span>\r\n\r\napp<\/span>.<\/span>listen<\/span>(<\/span>port<\/span>,<\/span> ()<\/span> =><\/span> {<\/span>\r\n  console<\/span>.<\/span>log<\/span>(<\/span>`Example app listening on port <\/span>${<\/span>port<\/span>}<\/span>`<\/span>)<\/span>\r\n})<\/span>\r\n\r\nfunction<\/span> getProfileOption<\/span>(<\/span>userId<\/span>)<\/span> {<\/span>\r\n  return<\/span> {<\/span>\r\n    url<\/span>:<\/span> '<\/span>https:\/\/api.line.me\/v2\/bot\/profile\/<\/span>'<\/span> +<\/span> userId<\/span>,<\/span>\r\n    json<\/span>:<\/span> true<\/span>,<\/span>\r\n    headers<\/span>:<\/span> {<\/span>\r\n      '<\/span>Authorization<\/span>'<\/span>:<\/span> '<\/span>Bearer {<\/span>'<\/span> +<\/span> process<\/span>.<\/span>env<\/span>.<\/span>LINE_CHANNEL_ACCESS_TOKEN<\/span> +<\/span> '<\/span>}<\/span>'<\/span>\r\n    }<\/span>\r\n  };<\/span>\r\n}<\/span>\r\nfunction<\/span> validateSignature<\/span>(<\/span>signature<\/span>,<\/span> body<\/span>)<\/span> {<\/span>\r\n  const<\/span> hmac<\/span> =<\/span> crypto<\/span>.<\/span>createHmac<\/span>(<\/span>'<\/span>sha256<\/span>'<\/span>,<\/span> process<\/span>.<\/span>env<\/span>.<\/span>LINE_CHANNEL_SECRET<\/span>);<\/span>\r\n  const<\/span> data<\/span> =<\/span> new<\/span> Buffer<\/span>(<\/span>JSON<\/span>.<\/span>stringify<\/span>(<\/span>body<\/span>),<\/span> '<\/span>utf8<\/span>'<\/span>);<\/span>\r\n  const<\/span> result<\/span> =<\/span> hmac<\/span>.<\/span>update<\/span>(<\/span>data<\/span>).<\/span>digest<\/span>(<\/span>'<\/span>base64<\/span>'<\/span>);<\/span>\r\n  return<\/span> signature<\/span> ==<\/span> result<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
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