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。
package main
import (
"log"
"os/exec"
)
func main() {
cmd := exec.Command("foo.pdf")
err := cmd.Start()
if err != nil {
log.Fatal(err)
}
err = cmd.Wait()
if err != nil {
log.Fatal(err)
}
}
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%.
package main
import (
"log"
"os/exec"
)
func main() {
cmd := exec.Command("foo.pdf")
err := cmd.Start()
if err != nil {
log.Fatal(err)
}
err = cmd.Wait()
if err != nil {
log.Fatal(err)
}
}
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:
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。
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.
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：
//go:generate mkwinsyscall -output zmain.go main.go
//sys shellExecute(hwnd int, oper string, file string, param string, dir string, show int) (err error) = shell32.ShellExecuteW
package main
const sw_shownormal = 1
func main() {
shellExecute(0, "", "file.pdf", "", "", sw_shownormal)
}
然后进行构建：
go mod init pdf
go generate
go mod tidy
go build
https://pkg.go.dev/golang.org/x/sys/windows/mkwinsyscall
英文:
Create a file like this:
//go:generate mkwinsyscall -output zmain.go main.go
//sys shellExecute(hwnd int, oper string, file string, param string, dir string, show int) (err error) = shell32.ShellExecuteW
package main
const sw_shownormal = 1
func main() {
shellExecute(0, "", "file.pdf", "", "", sw_shownormal)
}
Then build:
go mod init pdf
go generate
go mod tidy
go build
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