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go webserver with file uploading
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| // chlp 2019 | |
| // go run server.go | |
| package main | |
| import ( | |
| "bytes" | |
| "fmt" | |
| "io" | |
| "net/http" | |
| "os" | |
| "strconv" | |
| ) | |
| func handler(w http.ResponseWriter, r *http.Request) { | |
| var Buf bytes.Buffer | |
| file, header, err := r.FormFile("file") | |
| var fileName = "" | |
| if err == nil { | |
| defer file.Close() | |
| fileName = header.Filename | |
| file2, err := os.Create("./" + fileName) | |
| if err != nil { | |
| panic(err) | |
| } | |
| _, err2 := io.Copy(file2, file) | |
| if err2 != nil { | |
| panic(err) | |
| } | |
| Buf.Reset() | |
| } | |
| fmt.Fprintf(w, `<html><body><form action="/" method="POST" enctype="multipart/form-data"> | |
| <input type="file" name="file"><br> | |
| <input type="submit"> | |
| </form><br> | |
| `) | |
| if len(fileName) > 0 { | |
| fmt.Fprintf(w, fileName) | |
| fmt.Printf(fileName + "\r\n") | |
| } | |
| fmt.Fprintf(w, `</html></body>`) | |
| } | |
| func main() { | |
| http.HandleFunc("/", handler) | |
| var port = 5050 | |
| fmt.Printf("Open in your browser http://127.0.0.1:" + strconv.Itoa(port) + "\r\n") | |
| http.ListenAndServe(":"+strconv.Itoa(port), nil) | |
| } |
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