java中执行linux命令部署前端代码

说明

执行linux命令可以用Runtime来执行，但是不是很方便，而且需要做很多额外的操作，如windows的换行符等,
这里采用 apache的 commons-exec 包来处理

引入依赖

maven 依赖

<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-exec</artifactId>
    <version>1.3</version>
</dependency>

应用中使用

应用中直接组装好shell语句，然后执行方法即可，方法如下

/**
 * 执行指定命令，输出结果到指定输出流中
 *
 * @param command 命令
 * @param out     执行结果输出流
 * @return 执行结果状态码：执行成功返回0
 * @throws ExecuteException 失败时抛出异常，由调用者捕获处理
 * @throws IOException      失败时抛出异常，由调用者捕获处理
 */
public synchronized static int exeCommand(String command, OutputStream out) throws ExecuteException, IOException {
        
    log.info("执行的命令: {}",command)
    //构造命令
    CommandLine commandLine = CommandLine.parse(command);

    //获取到PumpStreamHandler，默认用这就好了
    PumpStreamHandler pumpStreamHandler = null;
    if (null == out) {
        pumpStreamHandler = new PumpStreamHandler();
    } else {
        pumpStreamHandler = new PumpStreamHandler(out);
    }
    // 设置超时时间为10秒 , -1为不设置超时时间
    //ExecuteWatchdog watchdog = new ExecuteWatchdog(TIMEOUT);
    ExecuteWatchdog watchdog = new ExecuteWatchdog(-1);

    //执行器
    DefaultExecutor executor = new DefaultExecutor();
    executor.setStreamHandler(pumpStreamHandler);
    executor.setWatchdog(watchdog);
    //执行
    return executor.execute(commandLine);
}

总的来说就执行就好了，这里的OutputStream可要可不要，可以封装一个方法

public synchronized static String exeCommand(String command) throws RuntimeException {
    try (ByteArrayOutputStream out = new ByteArrayOutputStream()) {
        //调用上面的方法
        int exitCode = exeCommand(command, out);
        if (exitCode == 0) {
            logger.info("命令运行成功:" + System.currentTimeMillis());
        } else {
            logger.error("命令运行失败:" + System.currentTimeMillis());
        }
        //输出流，一般不用
        return out.toString(DEFAULT_CHARSET);
    } catch (Exception e) {
        logger.info(ExceptionUtils.getStackTrace(e));
        throw new RuntimeException(ExceptionUtils.getStackTrace(e));
    }
}

注意执行命令时可能报错 commons-exec Process exited with an error: 11 或者 9 1 等数字，注意检查下命令是否正确

封装的工具

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;

    /**
     * 执行指定命令
     *
     * @param command 命令
     * @return 命令执行完成返回结果
     * @throws RuntimeException 失败时抛出异常，由调用者捕获处理
     */
    public synchronized static String exeCommand(String command) throws RuntimeException {
        try (ByteArrayOutputStream out = new ByteArrayOutputStream()) {
            int exitCode = exeCommand(command, out);
            if (exitCode == 0) {
                logger.info("命令运行成功:" + System.currentTimeMillis());
            } else {
                logger.error("命令运行失败:" + System.currentTimeMillis());
            }
            return out.toString(DEFAULT_CHARSET);
        } catch (Exception e) {
            logger.info(ExceptionUtils.getStackTrace(e));
            throw new RuntimeException(ExceptionUtils.getStackTrace(e));
        }
    }

    /**
     * 执行指定命令，输出结果到指定输出流中
     *
     * @param command 命令
     * @param out     执行结果输出流
     * @return 执行结果状态码：执行成功返回0
     * @throws ExecuteException 失败时抛出异常，由调用者捕获处理
     * @throws IOException      失败时抛出异常，由调用者捕获处理
     */
    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);
        }
        // 设置超时时间为10秒
        //ExecuteWatchdog watchdog = new ExecuteWatchdog(TIMEOUT);
        ExecuteWatchdog watchdog = new ExecuteWatchdog(-1);
        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"));
    }

}

引用忘了具体的文章了，没找到链接