java 调用 shell 命令并获取执行结果

使用到 Process 和 Runtime 两个类，返回值通过 Process 类的 getInputStream()方法获取

1. package ark;
3. import java.io.BufferedReader;
4. import java.io.IOException;
5. import java.io.InputStreamReader;
6. import java.util.ArrayList;
7. import java.util.List;
9. public class ReadCmdLine {

10.  public static void main(String args[]) {  
    

11.      Process process = null;  
    

12.      List processList = new ArrayList();  
    

13.      try {  
    

14.          process = Runtime.getRuntime().exec("ps -aux");  
    

15.          BufferedReader input = new BufferedReader(new InputStreamReader(process.getInputStream()));  
    

16.          String line = "";  
    

17.          while ((line = input.readLine()) != null) {  
    

18.              processList.add(line);  
    

19.          }  
    

20.          input.close();  
    

21.      } catch (IOException e) {  
    

22.          e.printStackTrace();  
    

23.      }  
    

25.      for (String line : processList) {  
    

26.          System.out.println(line);  
    

27.      }  
    

28.  }  
    

29. }

调用 shell 脚本，判断是否正常执行，如果正常结束，Process 的 waitFor()方法返回 0

1. public static void callShell(String shellString) {

2.  try {  
   

3.      Process process = Runtime.getRuntime().exec(shellString);  
   

4.      int exitValue = process.waitFor();  
   

5.      if (0 != exitValue) {  
   

6.          log.error("call shell failed. error code is :" + exitValue);  
   

7.      }  
   

8.  } catch (Throwable e) {  
   

9.      log.error("call shell failed. " + e);  
   

10.  }  
    

11. }