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form.go
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/
form.go
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package net
import (
"io"
"log"
"net/http"
"os"
"path"
)
// MultipartFormFile 接受文件参数
// string 文件名
// error 错误码
func MultipartFormFile(r *http.Request, field, dstPath string) (ret string, err error) {
fileContent, fileHead, fileErr := r.FormFile(field)
if fileErr != nil {
err = fileErr
log.Printf("get file field failed, field:%s, err:%s", field, err.Error())
return
}
defer fileContent.Close()
_, fileErr = os.Stat(dstPath)
if fileErr != nil {
if os.IsNotExist(fileErr) {
fileErr = os.MkdirAll(dstPath, os.ModePerm)
}
}
if fileErr != nil {
err = fileErr
log.Printf("destination path is invalid, err:%s", err.Error())
return
}
dstFilePath := path.Join(dstPath, fileHead.Filename)
dstFile, dstErr := os.Create(dstFilePath)
if dstErr != nil {
err = dstErr
log.Printf("create destination file failed, err:%s", err.Error())
return
}
defer dstFile.Close()
_, err = io.Copy(dstFile, fileContent)
if err != nil {
log.Printf("copy destination file failed, err%s", err.Error())
return
}
ret = dstFilePath
return
}