java数据库唯一id生成工具类

import java.io.File;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Map;import java.util.Random;import java.util.UUID;import org.springframework.dao.EmptyResultDataAccessException;import org.springframework.jdbc.core.JdbcTemplate;public class UniqueIdUtil{ private static long adjust = 1L; private static long nextId = 0L; private static long lastId = -1L; private static long randomLeng = 6L; private static JdbcTemplate jdbcTemplate; private static SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMddHHmmss");  private static void init() {  try  {   jdbcTemplate = (JdbcTemplate)AppUtil.getBean("jdbcTemplateSN");   String str2 = AppConfigUtil.get("genId.adjust");   if (str2 != null) {    adjust = Integer.parseInt(str2);   }  }  catch (Exception localException)  {   adjust = 1L;   String str3 = AppConfigUtil.get("genId.adjust");   if (str3 != null) {    adjust = Integer.parseInt(str3);   }  } }  private static void getNextIdBlock() {  if (jdbcTemplate == null) {   init();  }  Long localLong = Long.valueOf(-1L);  Integer localInteger = Integer.valueOf(-1);  String str1 = "SELECT bound,incremental FROM SYS_DB_ID T WHERE T.ID=?";  String str2 = "UPDATE SYS_DB_ID SET BOUND=? WHERE ID=?";  try  {   Map localMap = jdbcTemplate.queryForMap(str1, new Object[] { Long.valueOf(adjust) });   localLong = Long.valueOf(Long.parseLong(localMap.get("bound").toString()));   localInteger = Integer.valueOf(Integer.parseInt(localMap.get("incremental").toString()));   nextId = localLong.longValue();   lastId = localLong.longValue() + localInteger.intValue();   jdbcTemplate.update(str2, new Object[] { Long.valueOf(lastId), Long.valueOf(adjust) });  }  catch (EmptyResultDataAccessException localEmptyResultDataAccessException)  {   insertNewComputer();  } }  private static void insertNewComputer() {  try  {   lastId = 10000L;   String str = "INSERT INTO SYS_DB_ID (id,incremental,bound) VALUES(" + adjust + ",10000," + lastId + ")";   jdbcTemplate.update(str);  }  catch (Exception localException)  {   localException.printStackTrace();  } }  public static synchronized long genId() {  if (lastId <= nextId) {   getNextIdBlock();  }  long l = nextId++;  return l + adjust * 10000000000000L; }  public static final String getGuid() {  UUID localUUID = UUID.randomUUID();  return localUUID.toString(); }  public static final String getRandom() {  Random localRandom = new Random();  String str1 = "";  for (int i = 0; i < randomLeng; i++)  {   String str2 = String.valueOf(localRandom.nextInt(10));   str1 = str1 + str2;  }  return str1; }  public static String genOrderNo() {  long l = genId();  String str = dateFormat.format(new Date());  return str + l; }  public static void main(String[] paramArrayOfString)  throws Exception {}}