Java IOException

发布时间：2020-12-15 08:39:59 所属栏目：Java 来源：网络整理

导读：我正在执行一个下面的程序,通过 java调用shell,我得到的除外,请帮助我. 程序： import java.io.*;import java.util.*;public class ProcessExample {/** * @param args */ public static void main(String args[]) throws IOException { File file=new File(

我正在执行一个下面的程序,通过 java调用shell,我得到的除外,请帮助我.

程序：

import java.io.*;
import java.util.*;


public class ProcessExample {

/**
 * @param args
 */
 public static void main(String args[]) throws IOException {

       File file=new File("/opt/nilesh/fazal");


       ProcessBuilder processBuilder = new ProcessBuilder("./LicenseGen.sh --batchfile commands.txt");
       processBuilder.directory(file);
       processBuilder.redirectErrorStream(true);
       System.out.println("nilesh");
        Process process=processBuilder.start();      

       InputStream is = process.getInputStream();
       InputStreamReader isr = new InputStreamReader(is);
       BufferedReader br = new BufferedReader(isr);

       String line;

       System.out.printf("Output of running %s is:",Arrays.toString(args));

       while ((line = br.readLine()) != null) {
         System.out.println(line);
       }

       OutputStream os=process.getOutputStream();
       OutputStreamWriter osw=new OutputStreamWriter(os);
       BufferedWriter bw=new BufferedWriter(osw);
       bw.write("create licensekey -x license-input.xml");

       while ((line = br.readLine()) != null) {
         System.out.println(line);
       }

     }

}

和例外

Excepton:Exception in thread "main" java.io.IOException: Cannot run program "./LicenseGen.sh --batchfile commands.tx": java.io.IOException: error=2,No such file or directory
at java.lang.ProcessBuilder.start(ProcessBuilder.java:459)
at ProcessExample.main(ProcessExample.java:23)
Caused by: java.io.IOException: java.io.IOException: error=2,No such file or directory
at java.lang.UNIXProcess.<init>(UNIXProcess.java:148)
at java.lang.ProcessImpl.start(ProcessImpl.java:65)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:452)
... 1 more

解决方法

ProcessBuilder processBuilder = 
    new ProcessBuilder("./LicenseGen.sh","--batchfile","commands.txt");

您需要将命令和args作为单独的字符串或列表传递.

http://download.oracle.com/javase/6/docs/api/java/lang/ProcessBuilder.html

（编辑：李大同）

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