Hibernate之自定义ID生成器

Hibernate之自定义ID生成器 Ò? xxx.hml.xml <;id name=";id"; type=";java.lang.String";>; <;column name=";id"; length=";22"; />; <;generator class=";xx.xx.IdentifierGeneratorImpl"; />; <;/id>; ?þ ?ßÌåʵÏÖ: IdentifierGeneratorImpl.java Óõ?ÁËcommons???ß?üÖеÄRandomStringUtils import java.io.Serializable; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Properties; import org.apache.commons.lang.RandomStringUtils; import org.hibernate.HibernateException; import org.hibernate.MappingException; import org.hibernate.dialect.Dialect; import org.hibernate.engine.SessionImplementor; import org.hibernate.id.Configurable; import org.hibernate.id.IdentifierGenerator; import org.hibernate.type.Type; public class IdentifierGeneratorImpl implements IdentifierGenerator, Configurable { private static final int IDLENG = 32; private static final String YYMMDDHHMMSS = ";yyyyMMddhhmmss";; private static String getCurrentDate(){ return new SimpleDateFormat(YYMMDDHHMMSS).format(new Date()); } public Serializable generate(SessionImplementor session, Object obj) throws HibernateException { return new StringBuilder().append(getCurrentDate()).append(";-";).append(RandomStringUtils.randomNumeric(IDLENG)); } public void configure(Type type, Properties params, Dialect d) throws MappingException { } public static void main(String[] args) { IdentifierGeneratorImpl pu = new IdentifierGeneratorImpl(); System.out.println(pu.generate(null, null)); /*int random = 32; System.out.println(RandomStringUtils.randomNumeric(random)); System.out.println(RandomStringUtils.randomAscii(random)); System.out.println(RandomStringUtils.randomAlphabetic(random)); System.out.println(RandomStringUtils.randomAlphanumeric(random));*/ } }