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December 24, 2020 07:24
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Http Response in go
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| package main | |
| import ( | |
| "fmt" | |
| "net/http" | |
| "encoding/json" | |
| "html/template" | |
| ) | |
| type User struct { | |
| Id int `json:"id"` | |
| Name string `json:"name"` | |
| Email string `json:"email"` | |
| Phone string `json:"phone"` | |
| } | |
| func main() { | |
| http.HandleFunc("/", handler) | |
| http.HandleFunc("/json", jsonHandler) | |
| http.HandleFunc("/template", templateHandler) | |
| http.ListenAndServe(":8081", nil) | |
| } | |
| func handler(w http.ResponseWriter, r *http.Request) { | |
| fmt.Fprintf(w, "Hello World!") | |
| } | |
| //jsonHandler returns http respone in JSON format. | |
| func jsonHandler(w http.ResponseWriter, r *http.Request) { | |
| w.Header().Set("Content-Type", "application/json") | |
| user := User{Id: 1, | |
| Name: "John Doe", | |
| Email: "johndoe@gmail.com", | |
| Phone: "000099999"} | |
| json.NewEncoder(w).Encode(user) | |
| } | |
| //templateHandler renders a template and returns as http response. | |
| func templateHandler(w http.ResponseWriter, r *http.Request) { | |
| w.Header().Set("Content-Type", "text/html; charset=utf-8") | |
| t, err := template.ParseFiles("template.html") | |
| if err != nil { | |
| fmt.Fprintf(w, "Unable to load template") | |
| } | |
| user := User{Id: 1, | |
| Name: "John Doe", | |
| Email: "johndoe@gmail.com", | |
| Phone: "000099999"} | |
| t.Execute(w, user) | |
| } |
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| <html> | |
| <head> | |
| </head> | |
| <body> | |
| <h3>Name : {{.Name}}</h3> | |
| <h3>Email : {{.Email}}</h3> | |
| <h3>Phone : {{.Phone}}</h3> | |
| </body> | |
| </html> |
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Saved my day. Thanks for the gist.