mybtis 自定义主键策略

import java.util.UUID;
import tk.mybatis.mapper.genid.GenId;

public class UUIDMaker implements GenId<String> {

    public String genId(String table, String column) {
        UUID uuid = UUID.randomUUID();
        String str = uuid.toString();
        String temp = str.substring(0, 8) + str.substring(9, 13) + str.substring(14, 18) + str.substring(19, 23) + str.substring(24);
        return temp.toUpperCase();
    }

    public static String getUUID() {
        UUID uuid = UUID.randomUUID();
        String str = uuid.toString();
        String temp = str.substring(0, 8) + str.substring(9, 13) + str.substring(14, 18) + str.substring(19, 23) + str.substring(24);
        return temp.toUpperCase();
    }

    public static String[] getUUID(int number) {
        if (number < 1) {
            return null;
        } else {
            String[] ss = new String[number];

            for (int i = 0; i < number; ++i) {
                ss[i] = getUUID();
            }

            return ss;
        }
    }
}