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haolifengwang · · 2033 次点击 · · 开始浏览

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package main
import (
   "fmt"
   "html/template"
   "log"
   "net/http"
   "os"
   "io"
   "crypto/md5"
   "time"
   "strconv"
   "archive/zip"
)

var buf []byte
func sayhelloName(w http.ResponseWriter, r *http.Request){
   /*if r.Method == "Get" {
       t,_:=template.ParseFiles("index.html")
       t.Execute(w,nil)
   }else {
       fmt.Println("...")
   }
   */
   t,_:=template.ParseFiles("index.html")
   t.Execute(w,nil)
   fmt.Println("..")

}
func upload(w http.ResponseWriter, r* http.Request){
   fmt.Println("method:", r.Method)
   if r.Method == "GET" {
       crutime := time.Now().Unix()
       h := md5.New()
       io.WriteString(h,strconv.FormatInt(crutime, 10))
       token := fmt.Sprintf("%x",h.Sum(nil))
       t, _ := template.ParseFiles("upload.html")
       t.Execute(w,token)

   }else {
       r.ParseMultipartForm(32 << 20)
       file, handler, err := r.FormFile("uploadfile")
       if err != nil {
           fmt.Println(err)
           return
       }
       defer file.Close()
       fmt.Fprintf(w, "%v",handler.Header)
       f, err := os.OpenFile("./test/" + handler.Filename,os.O_WRONLY|os.O_CREATE, 066)
       if err != nil {
           fmt.Println(err)
           return
       }
       defer f.Close()
       io.Copy(f, file)
   }

}
func download(rw http.ResponseWriter, r* http.Request){
   zipName:="ZipTest.zip"
   rw.Header().Set("Content-Type","application/zip")
   rw.Header().Set("Content-Disposition",fmt.Sprintf("attachment; filename=\"%s\"",zipName))
   err := getZip(rw)
   if err != nil {
       log.Fatal(err)
   }
}
func getZip(w io.Writer) error {
   zipW := zip.NewWriter(w)
   defer zipW.Close()

   for i := 0; i< 5; i++ {
       f, err := zipW.Create(strconv.Itoa(i) + ".txt")
       if err != nil {
           return err
       }
       _, err = f.Write([]byte(fmt.Sprintf("Hello file %d", i)))
       if err != nil {
           return err
       }
   }
   return nil
}
func downfile(rw http.ResponseWriter, r* http.Request){
   fileName := "1.txt"
   file, err := os.Open(fileName);
   if err != nil {
       fmt.Fprintf(os.Stderr,"%v\n",err)
   }
   defer file.Close()
   rw.Header().Set("Content-Disposition","attachment; filename=1.txt")
   rw.Header().Set("Content-Type",r.Header.Get("Content-Type"))
   io.Copy(rw,file)

}
func main(){
   http.HandleFunc("/",sayhelloName)
   http.HandleFunc("/upload",upload)
   http.HandleFunc("/download",download)
   http.HandleFunc("/downfile",downfile)

   err := http.ListenAndServe(":9090",nil)
   if err != nil {
       log.Fatal("ListenAndServe: ",err);
   }
}

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