在Windows上运行默认的PDF文件应用程序的Golang代码。

huangapple
go评论122阅读模式
英文:

golang: run default application for a pdf file on windows

问题

我想要用默认应用程序从Go中的文件系统打开一个PDF文件。我该如何做到这一点？从命令行中，我只需写入pdf文件的文件名，应用程序就会打开（并显示请求的文件）。当我尝试使用exec.Command()时，我会得到一个错误（并不奇怪）exec: "foo.pdf": 在%PATH%中找不到可执行文件。

  1. package main
  3. import (
  4. 	"log"
  5. 	"os/exec"
  6. )
  8. func main() {
  9. 	cmd := exec.Command("foo.pdf")
  10. 	err := cmd.Start()
  11. 	if err != nil {
  12. 		log.Fatal(err)
  13. 	}
  14. 	err = cmd.Wait()
  15. 	if err != nil {
  16. 		log.Fatal(err)
  17. 	}
  19. }
英文:

I'd like to open a PDF file in the filesystem from go with the default application. How can I do that? From the command line I just write the filename of the pdf file and the application opens (with the requested file). When I try to use exec.Command() I get an error (not surprisingly) exec: "foo.pdf": executable file not found in %PATH%.

  1. package main
  3. import (
  4. 	"log"
  5. 	"os/exec"
  6. )
  8. func main() {
  9. 	cmd := exec.Command("foo.pdf")
  10. 	err := cmd.Start()
  11. 	if err != nil {
  12. 		log.Fatal(err)
  13. 	}
  14. 	err = cmd.Wait()
  15. 	if err != nil {
  16. 		log.Fatal(err)
  17. 	}
  19. }

答案1

得分: 13

exec.Command("rundll32.exe", "url.dll,FileProtocolHandler", "path_to_foo.pdf") should also handle it.

Note that still the right way to do it is to use a C wrapper around the ShellExecute() API function exported by shell32.dll, and the "w32" library seems to provide this wrapper right away.

英文: 
  1. exec.Command("rundll32.exe", "url.dll,FileProtocolHandler", "path_to_foo.pdf")

should also handle it.

Note that still the right way to do it is to use a C wrapper around the ShellExecute() API function exported by shell32.dll, and the "w32" library seems to provide this wrapper right away.

答案2

得分: 3

你必须启动 cmd /C start foo.pdf。这将让启动命令为您找到正确的可执行文件。

  1. cmd := exec.Command("cmd", "/C start path_to_foo.pdf")
英文:

You must launch cmd /C start foo.pdf. This will let the start command find the correct executable for you.

  1. cmd := exec.Command("cmd", "/C start path_to_foo.pdf")

答案3

得分: 0

创建一个像这样的文件：

  1. //go:generate mkwinsyscall -output zmain.go main.go
  2. //sys shellExecute(hwnd int, oper string, file string, param string, dir string, show int) (err error) = shell32.ShellExecuteW
  3. package main
  5. const sw_shownormal = 1
  7. func main() {
  8.    shellExecute(0, "", "file.pdf", "", "", sw_shownormal)
  9. }

然后进行构建：

  1. go mod init pdf
  2. go generate
  3. go mod tidy
  4. go build

https://pkg.go.dev/golang.org/x/sys/windows/mkwinsyscall

英文:

Create a file like this:

  1. //go:generate mkwinsyscall -output zmain.go main.go
  2. //sys shellExecute(hwnd int, oper string, file string, param string, dir string, show int) (err error) = shell32.ShellExecuteW
  3. package main
  5. const sw_shownormal = 1
  7. func main() {
  8.    shellExecute(0, "", "file.pdf", "", "", sw_shownormal)
  9. }

Then build:

  1. go mod init pdf
  2. go generate
  3. go mod tidy
  4. go build

https://pkg.go.dev/golang.org/x/sys/windows/mkwinsyscall

huangapple
  • 本文由 发表于 2012年8月22日 20:54:04
  • 转载请务必保留本文链接：https://go.coder-hub.com/12073635.html
  • go
  • windows
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