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server.go
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server.go
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package main
import (
"database/sql"
"encoding/json"
"fmt"
"log"
"net/http"
_ "github.com/go-sql-driver/mysql"
"github.com/gorilla/mux"
)
type User struct {
Id int `json:"id"`
Name string `json:"name"`
Login string `json:"login"`
Password string `json:"password"`
}
var database *sql.DB
var serverPort = ":8080"
func getUsersHandler(writer http.ResponseWriter, request *http.Request) {
writer.Header().Set("Content-Type", "application/json")
var users []User
result, err := database.Query("SELECT id, name, login FROM users")
if err != nil {
log.Println(err)
}
defer result.Close()
for result.Next() {
var user User
err := result.Scan(&user.Id, &user.Name, &user.Login)
if err != nil {
log.Println(err)
}
users = append(users, user)
}
_ = json.NewEncoder(writer).Encode(users)
}
func getUserByIdHandler(writer http.ResponseWriter, request *http.Request) {
writer.Header().Set("Content-Type", "application/json")
params := mux.Vars(request)
result, err := database.Query("SELECT id, name, login FROM users WHERE id = ?", params["id"])
if err != nil {
log.Println(err)
}
defer result.Close()
var user User
for result.Next() {
err := result.Scan(&user.Id, &user.Name, &user.Login)
if err != nil {
log.Println(err)
}
}
_ = json.NewEncoder(writer).Encode(user)
}
func main() {
db, err := sql.Open("mysql", "test:test@/golangserverdb")
if err != nil {
log.Println(err)
}
database = db
defer db.Close()
router := mux.NewRouter()
router.HandleFunc("/", HomeHandler)
router.HandleFunc("/users", getUsersHandler).Methods("GET")
router.HandleFunc("/users/{id}", getUserByIdHandler).Methods("GET")
http.Handle("/", router)
fmt.Printf("Server is listening ...\n")
http.ListenAndServe(serverPort, nil)
}