如何解決Java-使用Runtime.getRuntime（）。exec（無(wú)法啟動(dòng)臨時(shí)文件啟動(dòng)的進(jìn)程？

通過(guò)傳遞一組環(huán)境變量來(lái)解決。

解決方法

啟動(dòng)的進(jìn)程Runtime.getRuntime().exec(cmdLine,envp,workingDirectory);無(wú)法創(chuàng)建臨時(shí)文件。

在Eclipse的Maven插件中使用

從mvn啟動(dòng)報(bào)價(jià)：

Caused by: java.io.IOException: ??????? at java.io.WinNTFileSystem.createFileExclusively(Native Method) at java.io.File.createTempFile(File.java:1879)

完整日志

演示代碼段遇到相同的錯(cuò)誤。

String mavenPath = 'D:Progsspringsourceapache-maven-3.0.4binmvn.bat';String mavenOptions = '-X compile exec:java -Dexec.mainClass=runclass.Runme';String[] cmdLine = new String[2];cmdLine[0] = mavenPath; //cmdLine.add(mavenPath);cmdLine[1] = mavenOptions; //cmdLine.add(mavenOptions+' compile exec:java -Dexec.mainClass='+packageClass);String[] envp = new String[2];//Map<String,String> envm = new HashMap<String,String>();envp[0] = 'JAVA_HOME=' + System.getProperty('java.home'); //System.getenv('JAVA_HOME');envp[1] = 'M2_HOME=' + System.getenv('MAVEN_HOME');File workingDirectory = null;String currentDir = new File('.').getAbsolutePath();log(currentDir);String userDir = System.getProperty('user.dir'); //User working directory ; 'user.home' User home directoryworkingDirectory = new File(userDir); log(workingDirectory.toString());//Runtime rt = Runtime.getRuntime();Process proc = rt.exec(cmdLine,workingDirectory);InputStream stdout = proc.getInputStream();InputStream stderr = proc.getErrorStream();InputStreamReader isr = new InputStreamReader(stdout);InputStreamReader isr2 = new InputStreamReader(stderr);BufferedReader br = new BufferedReader(isr);BufferedReader br2 = new BufferedReader(isr2);

更新：

傳遞TMP和TEMP環(huán)境變量無(wú)濟(jì)于事。通過(guò) null而不是envp也無(wú)濟(jì)于事。

如果envp為null，則子進(jìn)程繼承當(dāng)前進(jìn)程的環(huán)境設(shè)置。