///usr/bin/env go run "$0" "$@"; exit;
package main
import "github.com/koding/multiconfig"
type Server struct {
Name string `required:"true"`
Port int `default:"6060"`
Enabled bool
Users []string
}
func main() {
// Create a new DefaultLoader without or with an initial config file
m := multiconfig.New()
// Get an empty struct for your configuration
serverConf := new(Server)
// Populated the serverConf struct
err := m.Load(serverConf) // Check for error
if err != nil {
println("ERROR:", err.Error)
}
m.MustLoad(serverConf) // Panic's if there is any error
// Access now populated fields
println("Port: ", serverConf.Port) // by default 6060
println("Name: ", serverConf.Name) // "koding"
}
golang 在Go（golang）中进行分段上传的示例
package main
import (
"bytes"
"fmt"
"io"
"log"
"mime/multipart"
"net/http"
"os"
"path/filepath"
)
// Creates a new file upload http request with optional extra params
func newfileUploadRequest(uri string, params map[string]string, paramName, path string) (*http.Request, error) {
file, err := os.Open(path)
if err != nil {
return nil, err
}
defer file.Close()
body := &bytes.Buffer{}
writer := multipart.NewWriter(body)
part, err := writer.CreateFormFile(paramName, filepath.Base(path))
if err != nil {
return nil, err
}
_, err = io.Copy(part, file)
for key, val := range params {
_ = writer.WriteField(key, val)
}
err = writer.Close()
if err != nil {
return nil, err
}
return http.NewRequest("POST", uri, body)
}
func main() {
path, _ := os.Getwd()
path += "/test.pdf"
extraParams := map[string]string{
"title": "My Document",
"author": "Matt Aimonetti",
"description": "A document with all the Go programming language secrets",
}
request, err := newfileUploadRequest("https://google.com/upload", extraParams, "file", "/tmp/doc.pdf")
if err != nil {
log.Fatal(err)
}
client := &http.Client{}
resp, err := client.Do(request)
if err != nil {
log.Fatal(err)
} else {
body := &bytes.Buffer{}
_, err := body.ReadFrom(resp.Body)
if err != nil {
log.Fatal(err)
}
resp.Body.Close()
fmt.Println(resp.StatusCode)
fmt.Println(resp.Header)
fmt.Println(body)
}
}