/**

     * <获取主鍵>

     * <获取32位UUID>

     * @return

     * @see [类、类#方法、类#成员]

     */

    public static String getUUID() {

        UUID uuid = UUID.randomUUID();

        String str = uuid.toString();//015ef458-d274-4ac2-a32d-19cc9c079631

        String temp = str.substring(0, 8) + str.substring(9, 13) + str.substring(14, 18) + str.substring(19, 23) + str.substring(24);//015ef458d2744ac2a32d19cc9c079631

        return temp;

      }