我用C#创建了方法(如下所示(,该方法通过C#控制台应用程序执行一些npm/newman命令。当前代码处理 cmd 挂起/失败的情况,但如果 nmp/newman 执行挂起或失败,则不处理这种情况。
你能帮忙吗?
public string Runner ()
{
var psiNpm = new ProcessStartInfo
{
FileName = "cmd",
RedirectStandardOutput = true,
RedirectStandardInput = true,
UseShellExecute = false
};
var pNpmRun = Process.Start(psiNpm);
pNpmRun.StandardInput.WriteLine("npm install -g newman");
pNpmRun.StandardInput.WriteLine("newman run " +
""C:\Postman\Test.postman.json" " +
"--folder "TestSearch" " +
"--environment "C:\Postman\postman_environment.json" " +
"--disable-unicode");
pNpmRun.StandardInput.WriteLine("exit");
var tenMin = 10 * 60 * 1000;
if(pNpmRun.WaitForExit(tenMin)) {
return pNpmRun.StandardOutput.ReadToEnd();
} else {
pNpmRun.Kill();
throw new TimeoutException("Command didn't complete in 10 minute timeout");
}
}
您可以检查npm
和newman
命令的退出代码,并将它们返回到调用进程:
public string Runner ()
{
var psiNpm = new ProcessStartInfo
{
FileName = "cmd",
RedirectStandardOutput = true,
RedirectStandardInput = true,
UseShellExecute = false
};
var pNpmRun = Process.Start(psiNpm);
pNpmRun.StandardInput.WriteLine("npm install -g newman");
pNpmRun.StandardInput.WriteLine("if not "%ERRORLEVEL%" == "0" exit 1");
pNpmRun.StandardInput.WriteLine("newman run " +
""C:\Postman\Test.postman.json" " +
"--folder "TestSearch" " +
"--environment "C:\Postman\postman_environment.json" " +
"--disable-unicode");
pNpmRun.StandardInput.WriteLine("if not "%ERRORLEVEL%" == "0" exit 2");
pNpmRun.StandardInput.WriteLine("exit 0");
var tenMin = 10 * 60 * 1000;
if(pNpmRun.WaitForExit(tenMin)) {
var exitCode = pNpmRun.ExitCode;
if(exitCode != 0) {
throw new Exception("Command failed " + exitCode);
}
return pNpmRun.StandardOutput.ReadToEnd();
} else {
pNpmRun.Kill();
throw new TimeoutException("Command didn't complete in 10 minute timeout");
}
}
在每个命令之后,请检查 errorlevel
,这是一个"虚拟环境变量",表示前一个命令的退出代码。如果它不是 0(通常为成功(,则它会退出cmd
进程返回到 C# 代码。C# 代码检查进程的ExitCode
,如果失败 (0(,则会引发包含 ExitCode 的异常,以便知道两个命令中的哪一个失败。这依赖于失败时返回非零退出代码的npm
和newman
进程。
这应该处理"失败"。处理"悬挂"会更加困难。真的没有任何方法可以知道这个过程是否会回来(阅读:停止问题(我在大学学到的一件事((。