java调用shell命令并获取执行结果

原文地址：http://blog.youkuaiyun.com/arkblue/article/details/7897396

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

    package ark;  
      
    import java.io.BufferedReader;  
    import java.io.IOException;  
    import java.io.InputStreamReader;  
    import java.util.ArrayList;  
    import java.util.List;  
      
    public class ReadCmdLine {  
        public static void main(String args[]) {  
            Process process = null;  
            List<String> processList = new ArrayList<String>();  
            try {  
                process = Runtime.getRuntime().exec("ps -aux");  
                BufferedReader input = new BufferedReader(new InputStreamReader(process.getInputStream()));  
                String line = "";  
                while ((line = input.readLine()) != null) {  
                    processList.add(line);  
                }  
                input.close();  
            } catch (IOException e) {  
                e.printStackTrace();  
            }  
      
            for (String line : processList) {  
                System.out.println(line);  
            }  
        }  
    }  

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

public static void callShell(String shellString) {  
    try {  
        Process process = Runtime.getRuntime().exec(shellString);  
        int exitValue = process.waitFor();  
        if (0 != exitValue) {  
            log.error("call shell failed. error code is :" + exitValue);  
        }  
    } catch (Throwable e) {  
        log.error("call shell failed. " + e);  
    }  
}