golang 增加用户

石头军 · · 2098 次点击 · · 开始浏览

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package main

import (
   "database/sql"
   "fmt"
   _ "github.com/mattn/go-sqlite3"
   "html/template"
   "log"
   "net/http"
   "strconv"
)

type User struct {
   ID   int
   Name string
}

func (user User) String() string {
   format := `ID : %d Name: %s`
   return fmt.Sprintf(format, user.ID, user.Name)
}
func (user User) Save() {
   db, err := sql.Open("sqlite3", "./foo.db")
   if err != nil {
       log.Fatal(err)
   }
   defer db.Close()
   log.Println("insert into users(userId,uname) values('%d,%s'),user.ID,user.Name")
   //db.Exec("insert into users(userId,uname) values(4,'test')")
   db.Exec(fmt.Sprintf(`insert into users(userId,uname) values('%d','%s')`, user.ID, user.Name))
   if err != nil {
       log.Fatal(err)
   }
}
func saveUser(w http.ResponseWriter, req *http.Request) {
   userId, _ := strconv.Atoi(req.FormValue("Id"))
   name := req.FormValue("name")
   out := strconv.Itoa(userId) + "-" + name
   u := &User{ID: userId, Name: name}
   log.Println(out, ";", u.String())
   u.Save()
   //fmt.Fprintf(w, u.String())
   http.Redirect(w, req, "/", http.StatusFound)
}

func addUser(w http.ResponseWriter, r *http.Request) {
   t, _ := template.ParseFiles("tmpl/addUser.html")
   t.Execute(w, nil)
}
func getUsers(w http.ResponseWriter, r *http.Request) {
   db, err := sql.Open("sqlite3", "./foo.db")
   if err != nil {
       log.Fatal(err)
   }
   defer db.Close()

   rows, err := db.Query("select * from users")
   if err != nil {
       log.Fatal(err)
   }
   defer rows.Close()
   var id, name string
   users := ""
   for rows.Next() {
       err = rows.Scan(&id, &name)
       if err == nil {
           log.Println(id, name)
           users = users + id + "," + name + ";\n"
       }
   }
   fmt.Fprintf(w, users)
}
func main() {
   http.HandleFunc("/", addUser)
   http.HandleFunc("/user", saveUser)
   http.HandleFunc("/users", getUsers)
   err := http.ListenAndServe(":8880", nil)
   if err != nil {
       log.Fatal("ListenAndServe: ", err.Error())
   }
}