在Java中调用Perl脚本

2012-11-12

  有两种方法,第一种是直接 Runtime.getRuntime().exec("...");

  这里推荐第二种,可以得到输出和返回值:源代码如下:

  import java.io.BufferedReader;

  import java.io.InputStream;

  import java.io.InputStreamReader;

  public class ExecPerl {

  public static void main(String args[]) {

  String[] cmd = { "C://cygwin//bin//perl.exe", "sample.pl", "param1", "param2" };

  StringBuffer resultStringBuffer = new StringBuffer();

  String lineToRead = "";

  // get Process to execute perl, get the output and exitValue

  int exitValue = 0;

  try {

  Process proc = Runtime.getRuntime().exec(cmd);

  InputStream inputStream = proc.getInputStream();

  BufferedReader bufferedRreader = new BufferedReader(new InputStreamReader(inputStream));

  // save first line

  if ((lineToRead = bufferedRreader.readLine()) != null) {

  resultStringBuffer.append(lineToRead);

  }

  // save next lines

  while ((lineToRead = bufferedRreader.readLine()) != null) {

  resultStringBuffer.append("/r/n");

  resultStringBuffer.append(lineToRead);

  }

  // Always reading STDOUT first, then STDERR, exitValue last

  proc.waitFor(); // wait for reading STDOUT and STDERR over

  exitValue = proc.exitValue();

  } catch (Exception ex) {

  resultStringBuffer = new StringBuffer("");

  exitValue = 2;

  }

  System.out.println("exit:" + exitValue);

  System.out.println(resultStringBuffer.toString());

  }

  }

  使用了 Process 后可以得到 Perl 的输出和返回值~

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