[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"academy-blogs-th-1-1-all-go-http-middleware-control-request-all--*":3,"academy-blog-translations-t641npbb74tfg8t":149},{"data":4,"page":137,"perPage":137,"totalItems":137,"totalPages":137},[5],{"alt":6,"collectionId":7,"collectionName":8,"content":9,"cover_image":10,"cover_image_path":11,"created":12,"created_by":13,"expand":14,"id":143,"keywords":144,"locale":119,"published_at":145,"scheduled_at":13,"school_blog":141,"short_description":146,"slug":147,"status":139,"title":6,"updated":148,"updated_by":13,"views":142},"Ep.21 Go กับ HTTP Middleware ควบคุมทุก Request อย่างมือโปร!","sclblg987654321","school_blog_translations","\u003Cp class=\"p1\">\u003Cstrong>Go กับ HTTP Middleware ควบคุมทุก Request อย่างมือโปร!\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp class=\"p2\"> \u003C\u002Fp>\u003Cp class=\"p3\">\u003Cstrong>Middleware คืออะไร?\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp class=\"p3\">Middleware คือ ส่วนที่ทำหน้าที่จัดการ Request หรือ Response ก่อนที่มันจะถึง Handler หลักของเรา เช่น การตรวจสอบสิทธิ์ (Authentication), การบันทึก Log, หรือการจัดการ Header\u003C\u002Fp>\u003Cp class=\"p3\">ตัวอย่างการทำงานของ Middleware :\u003C\u002Fp>\u003Cul class=\"ul1\">\u003Cli class=\"li3\">รับ Request จากผู้ใช้\u003C\u002Fli>\u003Cli class=\"li3\">ตรวจสอบหรือปรับแต่ง Request (เช่น ตรวจสอบ Token)\u003C\u002Fli>\u003Cli class=\"li3\">ส่งต่อไปยัง Handler หลัก\u003C\u002Fli>\u003Cli class=\"li3\">หลังจาก Handler ทำงานเสร็จ Middleware อาจปรับแต่ง Response ก่อนส่งกลับผู้ใช้\u003C\u002Fli>\u003C\u002Ful>\u003Cp class=\"p3\"> \u003C\u002Fp>\u003Cp class=\"p3\">\u003Cstrong>การสร้าง Middleware แบบง่ายๆ ใน Go\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp class=\"p3\">ตัวอย่างการสร้าง Middleware :\u003C\u002Fp>\u003Cp class=\"p3\">ในตัวอย่างนี้ :\u003C\u002Fp>\u003Cp class=\"p3\">loggingMiddleware ทำหน้าที่บันทึก Log ของทุก Request ที่เข้ามา\u003C\u002Fp>\u003Cp class=\"p3\">Middleware จะทำงานก่อน helloHandler\u003C\u002Fp>\u003Cpre>\u003Ccode class=\"language-plaintext\">package main\r\n\r\nimport (\r\n    \"fmt\"\r\n    \"net\u002Fhttp\"\r\n)\r\n\r\nfunc loggingMiddleware(next http.Handler) http.Handler {\r\n    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {\r\n        fmt.Printf(\"Request: %s %s\\n\", r.Method, r.URL.Path)\r\n        next.ServeHTTP(w, r) \u002F\u002F ส่ง Request ไปยัง Handler ถัดไป\r\n    })\r\n}\r\n\r\nfunc helloHandler(w http.ResponseWriter, r *http.Request) {\r\n    fmt.Fprintln(w, \"Hello, World!\")\r\n}\r\n\r\nfunc main() {\r\n    mux := http.NewServeMux()\r\n    mux.Handle(\"\u002F\", loggingMiddleware(http.HandlerFunc(helloHandler)))\r\n\r\n    fmt.Println(\"Server started at :8080\")\r\n    http.ListenAndServe(\":8080\", mux)\r\n}\r\u003C\u002Fcode>\u003C\u002Fpre>\u003Cp> \u003C\u002Fp>\u003Cp class=\"p3\">\u003Cstrong>Middleware สำหรับการตรวจสอบสิทธิ์ (Authentication Middleware)\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp class=\"p3\">Middleware สามารถใช้ตรวจสอบ Token เพื่อยืนยันว่าผู้ใช้มีสิทธิ์ในการเข้าถึงหรือไม่\u003C\u002Fp>\u003Cp class=\"p3\">ในตัวอย่างนี้ :\u003C\u002Fp>\u003Cp class=\"p3\">authMiddleware ตรวจสอบว่ามี Authorization Header หรือไม่ และมีค่าเป็น valid-token หรือไม่\u003C\u002Fp>\u003Cp class=\"p3\">หากไม่ผ่าน จะส่งข้อความ \"Unauthorized\" พร้อมสถานะ 401\u003C\u002Fp>\u003Cpre>\u003Ccode class=\"language-plaintext\">func authMiddleware(next http.Handler) http.Handler {\r\n    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {\r\n        token := r.Header.Get(\"Authorization\")\r\n        if token != \"valid-token\" {\r\n            http.Error(w, \"Unauthorized\", http.StatusUnauthorized)\r\n            return\r\n        }\r\n        next.ServeHTTP(w, r) \u002F\u002F ส่งต่อไปยัง Handler ถ้าสิทธิ์ถูกต้อง\r\n    })\r\n}\r\n\r\nfunc main() {\r\n    mux := http.NewServeMux()\r\n    mux.Handle(\"\u002F\", authMiddleware(http.HandlerFunc(helloHandler)))\r\n\r\n    fmt.Println(\"Server started at :8080\")\r\n    http.ListenAndServe(\":8080\", mux)\r\n}\r\u003C\u002Fcode>\u003C\u002Fpre>\u003Cp> \u003C\u002Fp>\u003Cp class=\"p3\">\u003Cstrong>Middleware หลายตัวทำงานร่วมกัน\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp class=\"p3\">เราสามารถใช้ Middleware หลายตัวต่อกัน (Chaining) เพื่อเพิ่มการควบคุม Request และ Response ได้\u003C\u002Fp>\u003Cp class=\"p3\">ตัวอย่าง Middleware หลายตัว :\u003C\u002Fp>\u003Cp class=\"p3\">ในตัวอย่างนี้ :\u003C\u002Fp>\u003Cp class=\"p3\">ใช้ chainMiddleware เพื่อเชื่อมต่อ Middleware หลายตัว\u003C\u002Fp>\u003Cp class=\"p3\">เรียงลำดับการทำงานของ Middleware จากบนลงล่าง\u003C\u002Fp>\u003Cpre>\u003Ccode class=\"language-plaintext\">func chainMiddleware(h http.Handler, middlewares ...func(http.Handler) http.Handler) http.Handler {\r\n    for _, middleware := range middlewares {\r\n        h = middleware(h)\r\n    }\r\n    return h\r\n}\r\n\r\nfunc main() {\r\n    mux := http.NewServeMux()\r\n\r\n    mux.Handle(\"\u002F\", chainMiddleware(\r\n        http.HandlerFunc(helloHandler),\r\n        loggingMiddleware,\r\n        authMiddleware,\r\n    ))\r\n\r\n    fmt.Println(\"Server started at :8080\")\r\n    http.ListenAndServe(\":8080\", mux)\r\n}\r\u003C\u002Fcode>\u003C\u002Fpre>\u003Cp> \u003C\u002Fp>\u003Cp class=\"p3\">\u003Cstrong>กรณีการใช้งาน Middleware ที่พบบ่อย\u003C\u002Fstrong>\u003C\u002Fp>\u003Cul class=\"ul1\">\u003Cli class=\"li3\">การตรวจสอบสิทธิ์ (Authentication)\u003C\u002Fli>\u003Cli class=\"li3\">การบันทึก Log (Logging)\u003C\u002Fli>\u003Cli class=\"li3\">การจัดการ CORS (Cross-Origin Resource Sharing)\u003C\u002Fli>\u003Cli class=\"li3\">การบีบอัดข้อมูล (Compression)\u003C\u002Fli>\u003Cli class=\"li3\">การจัดการ Error (Error Handling)\u003C\u002Fli>\u003C\u002Ful>\u003Cp class=\"p3\"> \u003C\u002Fp>\u003Cp class=\"p3\">\u003Cstrong>สรุปง่ายๆ\u003C\u002Fstrong>\u003C\u002Fp>\u003Cul class=\"ul1\">\u003Cli class=\"li3\">Middleware ช่วยจัดการ Request\u002FResponse ก่อนและหลังถึง Handler หลัก\u003C\u002Fli>\u003Cli class=\"li3\">ใช้ Middleware ได้หลายตัวพร้อมกัน (Chaining) เพื่อจัดการหลายขั้นตอน\u003C\u002Fli>\u003Cli class=\"li4\">\u003Cspan class=\"s2\">Middleware \u003C\u002Fspan>เหมาะสำหรับการจัดการที่ต้องทำซ้ำๆ\u003Cspan class=\"s2\"> \u003C\u002Fspan>เช่น\u003Cspan class=\"s2\"> \u003C\u002Fspan>การตรวจสอบสิทธิ์และการบันทึก\u003Cspan class=\"s2\"> Log\u003C\u002Fspan>\u003C\u002Fli>\u003C\u002Ful>","11_11zon_dy2hxr52v1.webp","https:\u002F\u002Ftwsme-r2.tumwebsme.com\u002Fsclblg987654321\u002Fbrn7djwvkxwdty0\u002F11_11zon_dy2hxr52v1.webp","2026-03-04 08:34:31.332Z","",{"keywords":15,"locale":113,"school_blog":123},[16,23,28,33,38,43,48,53,58,63,68,73,78,83,88,93,98,103,108],{"collectionId":17,"collectionName":18,"created":19,"created_by":13,"id":20,"name":21,"updated":22,"updated_by":13},"sclkey987654321","school_keywords","2026-03-04 08:20:11.547Z","ey3puyme01a9bsw","Go","2026-04-10 16:07:25.893Z",{"collectionId":17,"collectionName":18,"created":24,"created_by":13,"id":25,"name":26,"updated":27,"updated_by":13},"2026-03-04 08:20:14.253Z","ah6lvy4x8qe08l5","Golang","2026-04-10 16:07:26.172Z",{"collectionId":17,"collectionName":18,"created":29,"created_by":13,"id":30,"name":31,"updated":32,"updated_by":13},"2026-03-04 08:33:59.518Z","7pqn3y8ffwzzde5","ภาษา Go","2026-04-10 16:08:04.777Z",{"collectionId":17,"collectionName":18,"created":34,"created_by":13,"id":35,"name":36,"updated":37,"updated_by":13},"2026-03-04 08:34:24.161Z","ru06o5mbma6nukl","HTTP","2026-04-10 16:08:13.801Z",{"collectionId":17,"collectionName":18,"created":39,"created_by":13,"id":40,"name":41,"updated":42,"updated_by":13},"2026-03-04 08:34:25.436Z","bctyeonwhcrzvq3","Middleware","2026-04-10 16:08:14.305Z",{"collectionId":17,"collectionName":18,"created":44,"created_by":13,"id":45,"name":46,"updated":47,"updated_by":13},"2026-03-04 08:34:26.333Z","nq20kkh2nlppxrb","การจัดการ Request","2026-04-10 16:08:14.575Z",{"collectionId":17,"collectionName":18,"created":49,"created_by":13,"id":50,"name":51,"updated":52,"updated_by":13},"2026-03-04 08:34:26.696Z","eu5rd0a9zzmtcq6","การตรวจสอบสิทธิ์","2026-04-10 16:08:14.732Z",{"collectionId":17,"collectionName":18,"created":54,"created_by":13,"id":55,"name":56,"updated":57,"updated_by":13},"2026-03-04 08:34:29.352Z","115l9n99u5mgwoi","การบันทึก Log","2026-04-10 16:08:15.647Z",{"collectionId":17,"collectionName":18,"created":59,"created_by":13,"id":60,"name":61,"updated":62,"updated_by":13},"2026-03-04 08:32:13.391Z","7nquvthmvw3cb3b","การพัฒนาเว็บ","2026-04-10 16:07:51.337Z",{"collectionId":17,"collectionName":18,"created":64,"created_by":13,"id":65,"name":66,"updated":67,"updated_by":13},"2026-03-04 08:27:15.893Z","keubtbdqa4mblx3","การพัฒนาโปรแกรม","2026-04-10 16:07:38.769Z",{"collectionId":17,"collectionName":18,"created":69,"created_by":13,"id":70,"name":71,"updated":72,"updated_by":13},"2026-03-04 08:32:27.645Z","vfe4f15x4b3afpm","การศึกษาการเขียนโปรแกรม","2026-04-10 16:07:54.538Z",{"collectionId":17,"collectionName":18,"created":74,"created_by":13,"id":75,"name":76,"updated":77,"updated_by":13},"2026-03-04 08:31:30.863Z","oyltq82epf0vqka","การเขียนโปรแกรม","2026-04-10 16:07:41.883Z",{"collectionId":17,"collectionName":18,"created":79,"created_by":13,"id":80,"name":81,"updated":82,"updated_by":13},"2026-03-04 08:34:09.187Z","3zp82zk9hqz13ko","การเขียนโปรแกรม Go","2026-04-10 16:08:08.225Z",{"collectionId":17,"collectionName":18,"created":84,"created_by":13,"id":85,"name":86,"updated":87,"updated_by":13},"2026-03-04 08:32:29.161Z","uewvwdt9cf41o8n","การเขียนโปรแกรมสำหรับมือใหม่","2026-04-10 16:07:54.935Z",{"collectionId":17,"collectionName":18,"created":89,"created_by":13,"id":90,"name":91,"updated":92,"updated_by":13},"2026-03-04 08:32:27.254Z","xl8ixz1jmfnab5f","ฝึกเขียนโปรแกรม","2026-04-10 16:07:54.377Z",{"collectionId":17,"collectionName":18,"created":94,"created_by":13,"id":95,"name":96,"updated":97,"updated_by":13},"2026-03-04 08:31:53.015Z","801w5t09mfaa9hl","ภาษาโปรแกรม","2026-04-10 16:07:46.625Z",{"collectionId":17,"collectionName":18,"created":99,"created_by":13,"id":100,"name":101,"updated":102,"updated_by":13},"2026-03-04 08:32:24.473Z","xquecx7u5svb567","โปรแกรม","2026-04-10 16:07:53.714Z",{"collectionId":17,"collectionName":18,"created":104,"created_by":13,"id":105,"name":106,"updated":107,"updated_by":13},"2026-03-04 08:26:56.612Z","yf74wkqyamfc5qx","โปรแกรมเมอร์","2026-04-10 16:07:36.426Z",{"collectionId":17,"collectionName":18,"created":109,"created_by":13,"id":110,"name":111,"updated":112,"updated_by":13},"2026-03-04 08:26:59.195Z","gab60xd583s3qaw","Superdev School","2026-04-10 16:07:37.087Z",{"code":114,"collectionId":115,"collectionName":116,"created":117,"flag":118,"id":119,"is_default":120,"label":121,"updated":122},"th","pbc_1989393366","locales","2026-01-22 10:59:55.832Z","twemoji:flag-thailand","s8wri3bt4vgg2ji",true,"Thai","2026-04-10 15:42:46.614Z",{"category":124,"collectionId":125,"collectionName":126,"expand":127,"id":141,"views":142},"wqxt7ag2gn7xcmk","pbc_2105096300","school_blogs",{"category":128},{"blogIds":129,"collectionId":130,"collectionName":131,"created":132,"created_by":13,"id":124,"image":133,"image_alt":13,"image_path":134,"label":135,"name":136,"priority":137,"publish_at":138,"scheduled_at":13,"status":139,"updated":140,"updated_by":13},[],"sclcatblg987654321","school_category_blogs","2026-03-04 08:33:53.210Z","59ty92ns80w_15oc1implw.png","https:\u002F\u002Ftwsme-r2.tumwebsme.com\u002Fsclcatblg987654321\u002Fwqxt7ag2gn7xcmk\u002F59ty92ns80w_15oc1implw.png",{"en":136,"th":136},"Golang The Series",1,"2026-03-16 04:39:38.440Z","published","2026-04-25 02:32:15.470Z","t641npbb74tfg8t",322,"brn7djwvkxwdty0",[20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100,105,110],"2025-01-27 04:38:19.983Z","เรียนรู้เกี่ยวกับ HTTP Middleware ใน Go เพื่อจัดการ Request และ Response อย่างมีประสิทธิภาพ รวมถึงการสร้าง Middleware สำหรับการบันทึก Log และตรวจสอบสิทธิ์","go-http-middleware-control-request","2026-04-25 02:47:32.903Z",{"th":147}]