采用UUIDHexGenerator类生成字符串主键，大于32位字符串主键

public static void main( String[] args ) throws Exception {

//创建配置文件并且向配置文件中写入字符串的分隔符

Properties props = new Properties();

props.setProperty("separator", "/");

//实现分隔符号的设置，默认为“”，下面不写当面设置无效

IdentifierGenerator gen = new UUIDHexGenerator();
( (Configurable) gen ).configure(Hibernate.STRING, props, null);
IdentifierGenerator gen2 = new UUIDHexGenerator();
( (Configurable) gen2 ).configure(Hibernate.STRING, props, null);

//遍历打印获得的id  主键生成策略 getIP()  + getJVM() + getHiTime() +getLoTime() + getCount()  

/*

单机情况下只有getJVM()  +  getLoTime()这两项发生变化

getCount()  每次都是从1开始计数

*/

for ( int i=0; i<10; i++) {

String id = (String) gen.generate(null, null);
System.out.println(id);
String id2 = (String) gen2.generate(null, null);
System.out.println(id2);
}


}