Coffee的博客

public class UUIDUtils { public static String getUUID() { String s = UUID.randomUUID().toString(); return s.substring(0, 8) + s.substring(9, 13) + s.substring(14, 18) + s.substring(19, 23) + s....

public class PropertiesUtil { private static Properties properties = new Properties(); static { InputStream in = PropertiesUtil.class.getResourceAsStream("/config.properties"); try { prope...

四个常量配置参数可以按需求做相应调整。 public class ZipImageUtil { private final static int FILE_SIZE_LIMIT = 100 * 1024; private final static int STREAM_SIZE_LIMIT = 100 * 1024; private final static do...

JS语言不支持15位以上的长整型，该工具使用与否要有取舍。 public class SnowflakeUtil { /** 开始时间截 (2015-01-01) */ private final static long TWEPOCH = 1420041600000L; /** 工作机器ID(0~31) */ private final static long WORKER_I...