Java:WAITINGexec进程直到它退出

Question

我在 Windows 中运行一个 java 程序，它从 Windows 事件中收集日志。创建一个 .csv 文件，在该文件上执行某些操作。

命令被执行并通过管道传输。如何让我的 Java 程序等待进程完成？

这是我使用的代码片段:

Runtime commandPrompt = Runtime.getRuntime();
try {           
    Process powershell = commandPrompt.exec("powershell -Command \"get-winevent -FilterHashTable @{ logname = 'Microsoft-Windows-PrintService/Operational';StartTime = '"+givenDate+" 12:00:01 AM'; EndTime = '"+beforeDay+" 23:59:59 ';  ID = 307 ;} | ConvertTo-csv| Out-file "+ file +"\"");
//I have tried waitFor() here but that does not seem to work, required command is executed but is still blocked
} catch (IOException e) { }
// Remaining code should get executed only after above is completed.

Answer 1

您需要使用 waitFor() 而不是 wait()。这样你的线程就会阻塞，直到执行的命令完成。