....占位
copy from
https://www.jianshu.com/p/10c857270947
https://www.jianshu.com/p/55b0b8126e40?utm_campaign=studygolang.com&utm_medium=studygolang.com&utm_source=studygolang.com
https://www.codercto.com/a/48060.html
1 // dataServer.go 2 package main 3 4 import ( 5 "io" 6 "log" 7 "net/http" 8 "os" 9 "strings" 10 ) 11 12 const objectDir = "./objects/" 13 14 var ( 15 url = "http://1.1.13.10:9800/huzh1310.txt" 16 ) 17 18 func Handler(w http.ResponseWriter, r *http.Request) { 19 m := r.Method 20 if m == http.MethodGet { 21 get(w, r) 22 return 23 } 24 w.WriteHeader(http.StatusMethodNotAllowed) 25 w.Header().Set("content-disposition", "attachment;filename=aa.txt") 26 } 27 28 func get(w http.ResponseWriter, r *http.Request) { 29 // 收到 接口服务器的 请求 30 // 提取 要获取的文件名 31 name := strings.Split(r.URL.EscapedPath(), "/")[2] 32 f, e := os.Open(objectDir + name) 33 if e != nil { 34 log.Println(e) 35 w.WriteHeader(http.StatusNotFound) 36 return 37 } 38 defer f.Close() 39 res, err := http.Get(url) 40 if err != nil { 41 panic(err) 42 } 43 // 真正读取，并发送 44 45 //文件流写入 46 //io.Copy(w, f) 47 48 //http 流写入 49 io.Copy(w, res.Body) 50 } 51 52 func getURL() { 53 res, err := http.Get(url) 54 if err != nil { 55 panic(err) 56 } 57 f, err := os.Create("huzh1310_local.txt") 58 if err != nil { 59 panic(err) 60 } 61 io.Copy(f, res.Body) 62 } 63 64 func main() { 65 http.HandleFunc("/objects/", Handler) 66 http.ListenAndServe(":8889", nil) 67 getURL() 68 69 }
// dataServer.go
package main
import (
"io"
"log"
"net/http"
"os"
"strings"
)
const objectDir = "./objects/"
var (
url = "http://1.1.13.10:9800/huzh1310.txt"
)
func Handler(w http.ResponseWriter, r *http.Request) {
m := r.Method
if m == http.MethodGet {
get(w, r)
return
}
w.WriteHeader(http.StatusMethodNotAllowed)
w.Header().Set("content-disposition", "attachment;filename=aa.txt")
}
func get(w http.ResponseWriter, r *http.Request) {
// 收到 接口服务器的 请求
// 提取 要获取的文件名
name := strings.Split(r.URL.EscapedPath(), "/")[2]
f, e := os.Open(objectDir + name)
if e != nil {
log.Println(e)
w.WriteHeader(http.StatusNotFound)
return
}
defer f.Close()
res, err := http.Get(url)
if err != nil {
panic(err)
}
// 真正读取，并发送
//文件流写入
//io.Copy(w, f)
//http 流写入
io.Copy(w, res.Body)
}
func getURL() {
res, err := http.Get(url)
if err != nil {
panic(err)
}
f, err := os.Create("huzh1310_local.txt")
if err != nil {
panic(err)
}
io.Copy(f, res.Body)
}
func main() {
http.HandleFunc("/objects/", Handler)
http.ListenAndServe(":8889", nil)
getURL()
}
待补充, golang http response header