Question

我在PowerShell中有一组脚本。我使用.HTA构建了一个GUI，但我正在迁移到类似于NODE.js的方法。

我有一个工作脚本，但我必须进行修改以解决丢失的功能以从命令行获取输入。我以前会看到CMD提示窗口，我会看到所有输出，如果有提示（Read-Host），用户可以与它进行交互。为了解决这个问题，我现在使用[Microsoft.VisualBasic.Interaction]::InputBox()在需要时从用户那里获得输入。

我在尝试使用child.stdin.write();时遇到问题，因为我的PowerShell进程只是挂起。它不会回应我的意见。

我已经尝试过我在网上找到的每一个答案，但没有成功。在生产中调用的脚本是一个长时间运行的过程，具体取决于所选的任务，它将花费20分钟到3个小时。

所以，问题是，我无法让child.spawned进程发送输入，或者PowerShell不接受来自stdin的输入。

提前感谢您的帮助。

代码：

HTML：

<button type="button" id="btn_ExecuteReport">Run Report</button>
<button type="button" id="btn_StopReport" >Stop Report</button>
<button type="button" id="btn_SendInput" >Send this...</button>
<h2>Results:</h2>
<p id="result_id">...</p>
<br/>

JS（使用Electron v 0.31.0，io.js v 3.1.0，jQuery v 1.7.2）：

$(document).ready(function () {
    $("#btn_ExecuteReport").click(function (event) {
        event.stopPropagation();
        global.$ = $;

        var remote = require('remote');
        // to get some paths depending on OS
        var app = remote.require('app');
        //clipboard
        var clipboard = require('clipboard');
        var shell = require('shell');
        // for choosing a folder
        var dialog = remote.require('dialog');
        var spawn = require('child_process').spawn;
        sCmd = "powershell.exe ";
        sCmdArg = '&' + "'" + __dirname + "/app.ps1' " ;
        // omit parameters for the purpose of this example
        //    + "-ODir '" + sOutputDirectory 
        //    + "' -WDir '" + sWorkingDirectory + "'" 
        //    + " -Report " + sReport 
        //    + " -pSendEmail " + sSendEmail 
        //    + " -pSendEmailHTMLBody " + sSendEmailHTMLBody 
        //    + " -pCreateReport " + sCreateReport 
        //    + " -pCheckReport " + sCheckReport 
        //    + " -pEmailAction " + sEmailAction
        //    ;
        $("#result_id").html("<p><font color='magenta'>Command: </font>" 
                                          + sCmdConcat + "</p>");
        // try again with spawn and event handlers
        var psSpawn = spawn(sCmd, [sCmdArg]);
        // add a 'data' event listener for the spawn instance
        psSpawn.stdout.on('data', function(data) { 
            console.log('stdout: ' + data); 
        });
        // add an 'end' event listener to close the writeable stream
        psSpawn.stdout.on('end', function(data) {
            console.log('Done with psSpawn...' );
        });
        psSpawn.stderr.on('data', function (data) {
            console.log('stderr: ' + data);
        });
        // when the spawn child process exits, check if there were any errors and close the writeable stream
        psSpawn.on('exit', function(code) {
            if (code != 0) {
                console.log('[EXIT] Failed: ' + code);
            }
            //Collect result from PowerShell (via clipboard)
            sResultData = clipboard.readText("Text");
        });

        psSpawn.on('close', function(code) {
            if (code != 0) {
                console.log('[ISSUE] code: ' + code);
            }
            console.log('[CLOSE]');
        });
        //sending the input with button #btn_sendInput
        $("#btn_SendInput").click(function (event) {
            psSpawn.stdin.setEncoding('utf8');
            psSpawn.stdin.write('ok');
            psSpawn.stdin.write('\n');
            psSpawn.stdin.write(os.EOL);
            //uncomment following line to end stdin on first button press
            //psSpawn.stdin.end();
        });

        // killing process
        $("#btn_StopReport").click(function (event) {
            event.stopPropagation();
            psSpawn.kill('SIGTERM');
            console.log('killed ' + psSpawn.pid);
        });
    });
});

PowerShell：

#work around to lack of Read-Host functionality
Write-Host "waiting"
[System.Reflection.Assembly]::LoadWithPartialName('Microsoft.VisualBasic') | Out-Null
$computer = [Microsoft.VisualBasic.Interaction]::InputBox("Enter a computer name", "Computer", "$env:computername") 
#
Write-Host "[Done] waiting"
#workaround END works 
Write-Host "Computer: [$computer]"
# START omit ----------------
#if we remove the following lines, all works but we lose the functionality to ask for input from the command line
Write-Host "Propmt for OK" 
$ok = Read-Host 
#
Write-Host "Prompt. Value of 'ok': [$ok]"
# END omit ----------------
#Copy new message to clipboard
"we want to see this maessage on the browser. $computer" | clip

#Exit script returning the appropriate value
[Environment]::Exit(0)
exit

我的console输出为：

stdout: waiting
stdout: 

stdout: [Done] waiting
Computer: [COMPUTER_NAME]
Propmt for OK

无论我按Send this...多少次，脚本都会动手。 console输出是（在按下#buton_StopReport之后）：

killed 2548
Done with psSpawn...
[EXIT] Failed: null
[ISSUE] code: null
[CLOSE]

NODEJS [electron io.js]向生成的进程child.stdin.write（）发送输入;

0 个答案: