Springboot集成GraphicsMagick

    private void initGM() throws Exception {
        String osName = System.getProperty("os.name").toLowerCase();
        log.info("os name: {}", osName);
        String gmPath;
        if (osName.contains("mac")) {
            gmPath = "gm/mac/gm";
        } else if (osName.contains("linux")) {
            // 初始化容器的环境
            initPodEnv();
            gmPath = "gm/linux/gm";
        } else {
            throw new RuntimeException("非法操作系统："+osName);
        }
        InputStream fisInJar = new ClassPathResource(gmPath).getInputStream();
        File file = File.createTempFile("GraphicsMagick", "_gm");
        file.setExecutable(true);
        GM_PATH = file.getAbsolutePath();
        //将jar包里的gm复制到操作系统的目录里
        OutputStream fosInOs = new FileOutputStream(file);
        byte[] buffer = new byte[1024];
        int readLength = fisInJar.read(buffer);
        while (readLength != -1) {
            fosInOs.write(buffer, 0, readLength);
            readLength = fisInJar.read(buffer);
        }
        IOUtils.closeQuietly(fosInOs);
        IOUtils.closeQuietly(fisInJar);
        log.info("gm初始化完毕");
    }

    /**
     * 初始化容器的环境
     *
     * 安装gm所依赖的库
     */
    private void initPodEnv() throws Exception {
        log.info("============ start init pod env ============");
        Process exec1 = Runtime.getRuntime().exec("yum install -y gcc make");
        this.printLog(exec1);
        log.info("cmd 1 exec success");
       
        Process exec2 = Runtime.getRuntime().exec("yum install -y libpng-devel libjpeg-devel libtiff-devel jasper-devel freetype-devel libtool-ltdl-devel*");
        this.printLog(exec2);
        log.info("cmd 2 exec success");
        // 打水印时缺少依赖
        Process exec3 = Runtime.getRuntime().exec("yum -y install ghostscript");
        this.printLog(exec3);
        log.info("cmd 3 exec success");
        log.info("============ init pod env success ============");
    }

/**
 * GM 进程池参数
 */
@ConfigurationProperties(prefix = "gm.pool")
@Data
public class GMPoolProperties {

    /**
     * 连接池最大活跃数
     */
    private int maxActive = 4;

    /**
     * 连接池最大空闲连接数
     */
    private int maxIdle = 4;

    /**
     * 连接池最小空闲连接数
     */
    private int minIdle = 2;

    /**
     * 资源池中资源最小空闲时间(单位为毫秒)，达到此值后空闲资源将被移
     */
    private long minEvictableIdleTimeMillis = 300000L;

    /**
     * 连接池连接用尽后执行的动作
     */
    private WhenExhaustedAction whenExhaustedAction = WhenExhaustedAction.BLOCK;

    /**
     * 连接池没有对象返回时，最大等待时间(毫秒)
     */
    private long maxWait = 5000;

    /**
     * 定时对线程池中空闲的链接进行校验
     */
    private boolean testWhileIdle = false;

    /**
     * 空闲资源的检测周期(单位为毫秒)
     */
    private long timeBetweenEvictionRunsMillis = 10000L;

}