Question

我似乎无法弄清楚为什么会这样做：

我有这样的功能设置：

func (srv *Server) StartServer() {
  // Some stuff to make sure paths are correct

  path := srv.Path + "server.exe"
  var args = []string{
    "ip=" + srv.IP,
    "un=" + srv.Username,
    "pw=" + srv.Password
  }
  proc, err := os.StartProcess(path, args, new(os.ProcAttr))
  if err != nil {
    panic(err)
  }
}

StartProcess方法抛出的索引超出范围。

我可能只是遗漏了一些东西，但我看不到它。

请求的确切错误：

panic: runtime error: index out of range

goroutine 1 [running]:
syscall.StartProcess(0xc082052b70, 0x21, 0xc08200a6e0, 0x5, 0x5, 0xc08201dd60, 0x0, 0x0, 0x0, 0x0)
        c:/go/src/syscall/exec_windows.go:322 +0x94c
os.startProcess(0xc082052b70, 0x21, 0xc08200a6e0, 0x5, 0x5, 0xc08200a730, 0x5217e0, 0x0, 0x0)
        c:/go/src/os/exec_posix.go:45 +0x482
os.StartProcess(0xc082052b70, 0x21, 0xc08200a6e0, 0x5, 0x5, 0xc08200a730, 0x0, 0x0, 0x0)
        c:/go/src/os/doc.go:24 +0x79
main.(*Server).StartServer(0x5efae0)
        E:/build_test/SrvMgr.go:85 +0x4e6
main.main()
        E:/build_test/SrvMgr.go:54 +0x141

goroutine 2 [runnable]:
runtime.forcegchelper()
        c:/go/src/runtime/proc.go:90
runtime.goexit()
        c:/go/src/runtime/asm_amd64.s:2232 +0x1

goroutine 3 [runnable]:
runtime.bgsweep()
        c:/go/src/runtime/mgc0.go:82
runtime.goexit()
        c:/go/src/runtime/asm_amd64.s:2232 +0x1

goroutine 4 [runnable]:
runtime.runfinq()
        c:/go/src/runtime/malloc.go:712
runtime.goexit()
        c:/go/src/runtime/asm_amd64.s:2232 +0x1
exit status 2

编辑：链接到简化的play.golang后复制它。我正在运行版本1.4.2 win / amd64

http://play.golang.org/p/S6kRLMyd2I

Answer 1

您收到错误是因为您没有在os.ProcAttr上为Stderr和Stdout设置文件描述符。似乎那些在linux上自动设置，但你需要在windows上设置它们。

这是一个有效的例子：

func (srv *Server) StartServer() {
  // Some stuff to make sure paths are correct

  path := srv.Path + "server.exe"
  var args = []string{
    "ip=" + srv.IP,
    "un=" + srv.Username,
    "pw=" + srv.Password
  }
  var attr os.ProcAttr
  attr.Files = []*os.File{nil, os.Stdout, os.Stderr}
  proc, err := os.StartProcess(path, args, &attr)
  if err != nil {
    panic(err)
  }
}

运行时错误：尝试os.StartProcess

1 个答案: