Java 執行系統命令工具類（commons-exec）

座標

		<!-- 可以在JVM中可靠地執行外部進程的庫。 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-exec</artifactId>
            <version>1.3</version>
        </dependency>

其他版本：https://mvnrepository.com/artifact/org.apache.commons/commons-exec

工具類

package com.example.demo.exec;

import org.apache.commons.exec.*;
import org.apache.commons.lang3.exception.ExceptionUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;

/**
 * 執行系統命令工具類
 *
 * @author https://blog.csdn.net/chen_2890
 */
public class CommandUtil {

    private static Logger logger = LoggerFactory.getLogger(CommandUtil.class.getSimpleName());
    private static final String DEFAULT_CHARSET = "UTF-8";
    private static final Long TIMEOUT = 10000L;

    /**
     * 執行指定命令
     *
     * @param command 命令
     * @return 命令執行完成返回結果
     * @throws RuntimeException 失敗時拋出異常，由調用者捕獲處理
     */
    public synchronized static String exeCommand(String command) throws RuntimeException {
        try (ByteArrayOutputStream out = new ByteArrayOutputStream()) {
            int exitCode = exeCommand(command, out);
            if (exitCode == 0) {
                logger.info("命令運行成功:" + System.currentTimeMillis());
            } else {
                logger.info("命令運行失敗:" + System.currentTimeMillis());
            }
            return out.toString(DEFAULT_CHARSET);
        } catch (Exception e) {
            logger.info(ExceptionUtils.getStackTrace(e));
            throw new RuntimeException(ExceptionUtils.getStackTrace(e));
        }
    }

    /**
     * 執行指定命令，輸出結果到指定輸出流中
     *
     * @param command 命令
     * @param out     執行結果輸出流
     * @return 執行結果狀態碼：執行成功返回0
     * @throws ExecuteException 失敗時拋出異常，由調用者捕獲處理
     * @throws IOException      失敗時拋出異常，由調用者捕獲處理
     */
    public synchronized static int exeCommand(String command, OutputStream out) throws ExecuteException, IOException {
        CommandLine commandLine = CommandLine.parse(command);
        PumpStreamHandler pumpStreamHandler = null;
        if (null == out) {
            pumpStreamHandler = new PumpStreamHandler();
        } else {
            pumpStreamHandler = new PumpStreamHandler(out);
        }
        // 設置超時時間爲10秒
        ExecuteWatchdog watchdog = new ExecuteWatchdog(TIMEOUT);
        DefaultExecutor executor = new DefaultExecutor();
        executor.setStreamHandler(pumpStreamHandler);
        executor.setWatchdog(watchdog);
        return executor.execute(commandLine);
    }

    public static void main(String[] args) {
        logger.info(exeCommand("pwd"));
        logger.info(exeCommand("ls"));
    }

}