我正在尝试运行mysql来执行java中的一些文件。 输入是从文件中读取的,应该通过管道传输到 mysql 进程中,一切看起来都很好,但是行
int exitCode = proc.waitFor();
一去不复返。
private boolean runScript(String path, String cmd, File file) throws IOException, InterruptedException {
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec( path + File.separatorChar + cmd );
OutputStream procOS = proc.getOutputStream();
InputStream procES = proc.getErrorStream();
InputStream procIS = proc.getInputStream();
OutputStreamWriter procStdIn = new OutputStreamWriter( procOS );
FileInputStream fis = new FileInputStream( file );
BufferedReader reader = new BufferedReader( new InputStreamReader( fis ) );
String send;
while ( ( send = reader.readLine() ) != null ) {
procStdIn.write( send );
System.out.println( send );
copyStream( procES, System.err );
copyStream( procIS, System.out );
}
procStdIn.write( "\r\nexit\r\n" );
int exitCode = proc.waitFor();
return exitCode == 0;
}
private void copyStream(InputStream is, PrintStream err) throws IOException {
byte b[] = new byte[ 1024 ];
int length;
while ( is.available() > 0 && ( length = is.read( b ) ) > 0 ) {
err.write( b, 0, length );
}
}
最佳答案
我怀疑您正在阻止读取 stdout 和 stderr。请参阅this answer了解更多详情。
关于java - 进程卡在 waitFor() 中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/7388145/