package main

import (

    "fmt"

    "io"

    "net/http"

    "os"

)

const (

    upload_path string = "./upload/"

)

func helloHandle(w http.ResponseWriter, r *http.Request) {

    io.WriteString(w, "hello world!")

}

//上傳

func uploadHandle(w http.ResponseWriter, r *http.Request) {

    //從請求當(dāng)中判斷方法

    if r.Method == "GET" {

        io.WriteString(w, "<html><head><title>我的第一個頁面</title></head><body><form action='' method=\"post\" enctype=\"multipart/form-data\"><label>上傳圖片</label><input type=\"file\" name='file'  /><br/><label><input type=\"submit\" value=\"上傳圖片\"/></label></form></body></html>")

    } else {

        //獲取文件內(nèi)容 要這樣獲取

        file, head, err := r.FormFile("file")

        if err != nil {

            fmt.Println(err)

            return

        }

        defer file.Close()

        //創(chuàng)建文件

        fW, err := os.Create(upload_path + head.Filename)

        if err != nil {

            fmt.Println("文件創(chuàng)建失敗")

            return

        }

        defer fW.Close()

        _, err = io.Copy(fW, file)

        if err != nil {

            fmt.Println("文件保存失敗")

            return

        }

        //io.WriteString(w, head.Filename+" 保存成功")

        http.Redirect(w, r, "/hello", http.StatusFound)

        //io.WriteString(w, head.Filename)

    }

}

func main() {

    //啟動一個http 服務(wù)器

    http.HandleFunc("/hello", helloHandle)

    //上傳

    http.HandleFunc("/image", uploadHandle)

    err := http.ListenAndServe(":8080", nil)

    if err != nil {

        fmt.Println("服務(wù)器啟動失敗")

        return

    }

    fmt.Println("服務(wù)器啟動成功")

}