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

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 processList = new ArrayList();
        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);
    }
}