{"id":6186,"date":"2023-01-07T11:28:15","date_gmt":"2023-01-07T03:28:15","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=6186"},"modified":"2023-01-07T11:28:15","modified_gmt":"2023-01-07T03:28:15","slug":"%e4%ba%86%e8%a7%a3%e5%a6%82%e4%bd%95%e5%9c%a8node-js%e4%b8%ad%e4%bd%bf%e7%94%a8%e4%b8%ad%e9%96%93%e4%bb%b6middleware","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/node-js\/%e4%ba%86%e8%a7%a3%e5%a6%82%e4%bd%95%e5%9c%a8node-js%e4%b8%ad%e4%bd%bf%e7%94%a8%e4%b8%ad%e9%96%93%e4%bb%b6middleware\/","title":{"rendered":"\u4e86\u89e3\u5982\u4f55\u5728Node.js\u4e2d\u4f7f\u7528\u4e2d\u9593\u4ef6(Middleware)"},"content":{"rendered":"

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\u5982\u4f55\u5728 Node.js \u4e2d\u4f7f\u7528\u4e2d\u95f4\u4ef6(middleware)<\/h1>\n

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<\/p>\n

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\u5982\u4f55\u5728 Node.js \u4e2d\u4f7f\u7528\u4e2d\u9593\u4ef6<\/h2>\n

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Express \u6846\u67b6\u5141\u8a31\u958b\u767c\u4eba\u54e1\u4f7f\u7528\u4e2d\u9593\u4ef6\u4f86\u69cb\u5efa\u61c9\u7528\u7a0b\u5f0f\u3002\u4e2d\u9593\u4ef6\u53ef\u4ee5\u7528\u65bc\u6539\u5584\u61c9\u7528\u7a0b\u5f0f\u7684\u6027\u80fd\uff0c\u4e26\u63d0\u4f9b\u66f4\u591a\u7684\u529f\u80fd\u3002\u4f8b\u5982\uff0c\u958b\u767c\u4eba\u54e1\u53ef\u4ee5\u4f7f\u7528\u4e2d\u9593\u4ef6\u4f86\u6539\u5584\u61c9\u7528\u7a0b\u5f0f\u7684\u53ef\u64f4\u5c55\u6027\uff0c\u4e26\u63d0\u4f9b\u66f4\u591a\u7684\u5b89\u5168\u6027\u3002<\/p>\n

\n\/\/ \u5b89\u88dd\u4e2d\u9593\u4ef6\nconst express = require('express');\nconst app = express();\n\n\/\/ \u4f7f\u7528\u4e2d\u9593\u4ef6\napp.use(function(req, res, next) {\n  \/\/ \u4e2d\u9593\u4ef6\u7684\u908f\u8f2f\n  next();\n});\n\n\/\/ \u555f\u52d5\u4f3a\u670d\u5668\napp.listen(3000, function() {\n  console.log('Server is running on port 3000');\n});\n<\/pre>\n
\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u6f14\u793a\u4e86\u5982\u4f55\u5728 Node.js \u4e2d\u4f7f\u7528\u4e2d\u9593\u4ef6\u3002\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5b89\u88dd Express \u6846\u67b6\uff0c\u7136\u5f8c\u4f7f\u7528 app.use() \u65b9\u6cd5\u4f86\u5b89\u88dd\u4e2d\u9593\u4ef6\u3002\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u53ef\u4ee5\u5728\u4e2d\u9593\u4ef6\u51fd\u6578\u4e2d\u6dfb\u52a0\u6211\u5011\u60f3\u8981\u7684\u908f\u8f2f\uff0c\u7136\u5f8c\u8abf\u7528 next() \u65b9\u6cd5\u4f86\u57f7\u884c\u4e0b\u4e00\u500b\u4e2d\u9593\u4ef6\u3002\u6700\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 app.listen() \u65b9\u6cd5\u4f86\u555f\u52d5\u4f3a\u670d\u5668\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
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