udi-spms-java/src/main/java/com/glxp/api/util/CustomUtil.java

package com.glxp.api.util;

import java.util.*;

public class CustomUtil {

    public static String getUUId() {
        UUID uuid = UUID.randomUUID();
        return uuid.toString().replace("-", "");
    }

    //随机生成ID
    public static String getId() {
        String id = System.currentTimeMillis() + "";
        int number = new Random().nextInt(90) + 10;
        id = id + number;
        return id.substring(1);
    }


    public static <T> List<List<T>> splitList(List<T> list, int len) {

        if (list == null || list.isEmpty() || len < 1) {
            return Collections.emptyList();
        }

        List<List<T>> result = new ArrayList<>();

        int size = list.size();
        int count = (size + len - 1) / len;

        for (int i = 0; i < count; i++) {
            List<T> subList = list.subList(i * len, ((i + 1) * len > size ? size : len * (i + 1)));
            result.add(subList);
        }

        return result;
    }


    //随机生成往来单位ID
    public static String getUnitId() {
        String id = System.currentTimeMillis() + "";
        int number = new Random().nextInt(90) + 10;
        id = id + number;
        return "HZ" + id.substring(4);
    }

    public static boolean isEmpty(List data) {
        if (data == null || data.isEmpty()) {
            return true;
        }
        return false;
    }

    public static boolean isNotEmpty(List data) {
        if (data != null && !data.isEmpty()) {
            return true;
        }
        return false;
    }

    //生成当前时间字符串
    public static   String getDate(){
        Calendar ca = Calendar.getInstance();
        String year = String.valueOf(ca.get(Calendar.YEAR));//获取年份
        String month=String.valueOf(ca.get(Calendar.MONTH));//获取月份
        String day=String.valueOf(ca.get(Calendar.DATE));//获取日
        String minute=String.valueOf(ca.get(Calendar.MINUTE));//分
        String hour=String.valueOf(ca.get(Calendar.HOUR));//小时
        String second=String.valueOf(ca.get(Calendar.SECOND));//秒
        return  year+month+day+hour+minute+second;
    }


}