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工具类总结_java获取某天最后一秒

作者：我家小花儿 | 2024-03-23 02:05:01

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java获取某天最后一秒

1、双循环查询

  1. public class ProcessInPageUtils {
  2.     private ProcessInPageUtils() {
  3.  
  4.     }
  5.  
  6.     public static <T> void doInPage(int pageSize, QueryListCallBack<T> queryListCallBack,
  7.                                     Processor<T> processor) {
  8.         int currentPage = 1;
  9.         List<T> ts = queryListCallBack.queryList(currentPage, pageSize);
  10.         while (ts != null && !ts.isEmpty()) {
  11.             ts.forEach(processor::process);
  12.             currentPage++;
  13.             ts = queryListCallBack.queryList(currentPage, pageSize);
  14.         }
  15.     }
  16.  
  17.     public interface QueryListCallBack<T> {
  18.         List<T> queryList(int currentPage, int pageSize);
  19.     }
  20.  
  21.     public interface Processor<T>{
  22.         void process(T t);
  23.     }
  24. }
  25.  
  26.  
  27. //使用方法 适用于双循环的查询
  28.         ProcessInPageUtils.doInPage(PAGE_SIZE,
  29.             (curPage, pageSize) -> this.productItemRepository.selectByBrandId(brandId, curPage, pageSize),
  30.             attributeDO -> replenishmentManager.replenishCalculated(attributeDO.getItemCode(), dateStr, channelId, brandId));

2、DESUtils

  1. package com.hema.cloud.util;
  2.  
  3. import java.security.Key;
  4. import java.util.Base64;
  5. import java.util.Random;
  6.  
  7. import javax.crypto.Cipher;
  8. import javax.crypto.SecretKeyFactory;
  9. import javax.crypto.spec.DESKeySpec;
  10. import javax.crypto.spec.IvParameterSpec;
  11.  
  12. import lombok.extern.slf4j.Slf4j;
  13.  
  14. /**
  15.  * @Author lh
  16.  * @Date 2020/4/1
  17.  * @Description
  18.  */
  19. @Slf4j
  20. public class DESUtil {
  21.  
  22.     /**
  23.      * 偏移变量，固定占8位字节
  24.      */
  25.     private final static String IV_PARAMETER = "12345678";
  26.     /**
  27.      * 密钥算法
  28.      */
  29.     private static final String ALGORITHM = "DES";
  30.     /**
  31.      * 加密/解密算法-工作模式-填充模式
  32.      */
  33.     private static final String CIPHER_ALGORITHM = "DES/CBC/PKCS5Padding";
  34.     /**
  35.      * 默认编码
  36.      */
  37.     private static final String CHARSET = "utf-8";
  38.  
  39.     /**
  40.      * 盐值长度
  41.      */
  42.     private static final Integer SALT_LENGTH = 6;
  43.  
  44.     /**
  45.      * 0-9、a~z和A~Z的随机数
  46.      */
  47.     public static final String allChar = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
  48.  
  49.     /**
  50.      * DES加密字符串
  51.      *
  52.      * @param password 加密密码，长度不能够小于8位
  53.      * @param data     待加密字符串
  54.      * @return 加密后内容
  55.      */
  56.     public static String encrypt(String password, String data) {
  57.         if (password == null || password.length() < 8) {
  58.             throw new RuntimeException("加密失败，key不能小于8位");
  59.         }
  60.         if (data == null) {
  61.             return null;
  62.         }
  63.         try {
  64.             Key secretKey = generateKey(password);
  65.             Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
  66.             IvParameterSpec iv = new IvParameterSpec(IV_PARAMETER.getBytes(CHARSET));
  67.             cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);
  68.             byte[] bytes = cipher.doFinal(data.getBytes(CHARSET));
  69.  
  70.             //JDK1.8及以上可直接使用Base64，JDK1.7及以下可以使用BASE64Encoder
  71.             //Android平台可以使用android.util.Base64
  72.             return new String(Base64.getEncoder().encode(bytes));
  73.  
  74.         } catch (Exception e) {
  75.             return null;
  76.         }
  77.     }
  78.  
  79.     /**
  80.      * DES解密字符串
  81.      *
  82.      * @param password r
  83.      * @param data     待解密字符串
  84.      * @return 解密后内容
  85.      */
  86.     public static String decrypt(String password, String data) {
  87.         if (password == null || password.length() < 8) {
  88.             throw new RuntimeException("加密失败，key不能小于8位");
  89.         }
  90.         if (data == null) {
  91.             return null;
  92.         }
  93.         try {
  94.             Key secretKey = generateKey(password);
  95.             Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
  96.             IvParameterSpec iv = new IvParameterSpec(IV_PARAMETER.getBytes(CHARSET));
  97.             cipher.init(Cipher.DECRYPT_MODE, secretKey, iv);
  98.             return new String(cipher.doFinal(Base64.getDecoder().decode(data.getBytes(CHARSET))), CHARSET);
  99.         } catch (Exception e) {
  100.             return null;
  101.         }
  102.     }
  103.  
  104.     /**
  105.      * 生成key
  106.      *
  107.      * @param password
  108.      * @return
  109.      * @throws Exception
  110.      */
  111.     private static Key generateKey(String password) throws Exception {
  112.         DESKeySpec dks = new DESKeySpec(password.getBytes(CHARSET));
  113.         SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM);
  114.         return keyFactory.generateSecret(dks);
  115.     }
  116.  
  117.     /**
  118.      * 生成盐值，纯字符
  119.      *
  120.      * @return
  121.      */
  122.     public static String generateSalt() {
  123.         StringBuilder code = new StringBuilder();
  124.         Random random = new Random();
  125.         for (int i = 0; i < SALT_LENGTH; i++) {
  126.             code.append((char) ('a' + random.nextInt(26)));
  127.         }
  128.         return code.toString();
  129.     }
  130.  
  131.     public static String generateRandomKey(int length){
  132.         StringBuilder code = new StringBuilder();
  133.         Random random = new Random();
  134.         for (int i = 0; i < length; i++) {
  135.             code.append(allChar.charAt(random.nextInt(allChar.length())));
  136.         }
  137.         return code.toString();
  138.     }
  139. }
  140.  
  141.  
  142.  
  143. 在config中配置前段和后段的加解秘key
  144.  
  145.     /**
  146.      * 账户密码后端DES加解密的key
  147.      */
  148.     String PASSWORD_DES_PROVIDER_KEY = "lfdnas13io";
  149.  
  150.     /**
  151.      * 账户密码前端DES加解密的key
  152.      */
  153.     String PASSWORD_DES_CLIENT_KEY = "lwqinyw887";
  154.  
  155.  
  156.  
  157.   // 解密处理逻辑
  158.         String decryptedPwd = DESUtil.decrypt(PASSWORD_DES_CLIENT_KEY, request.getPassword());
  159.         assertPasswordValid(decryptedPwd);
  160.         request.setPassword(decryptedPwd);
  161. //加密处理逻辑
  162.     String salt = DESUtil.generateSalt();
  163.             accountDO.setSalt(salt);
  164.             accountDO.setPassword(encryptPassword(accountDto.getPassword(), salt));
  165.  
  166.    public static String encryptPassword(String password, String salt) {
  167.         return DESUtil.encrypt(PASSWORD_DES_PROVIDER_KEY, password + CommonConstant.SEPARATE + salt);
  168.     }

3、DateUtils

  1. package com.hema.cloud.util;
  2.  
  3. import lombok.extern.slf4j.Slf4j;
  4. import org.apache.commons.lang3.tuple.Pair;
  5.  
  6. import java.text.ParseException;
  7. import java.text.SimpleDateFormat;
  8. import java.time.Instant;
  9. import java.time.LocalDate;
  10. import java.time.LocalDateTime;
  11. import java.time.ZoneId;
  12. import java.time.ZonedDateTime;
  13. import java.util.Calendar;
  14. import java.util.Date;
  15. import java.util.concurrent.TimeUnit;
  16.  
  17. @Slf4j
  18. public class DateUtil {
  19.     public static final String DEFAULTDATEPATTERN = "yyyy-MM-dd HH:mm:ss";
  20.     public static final String DATEPATTERN_YYYY_MM_DD = "yyyy-MM-dd";
  21.     public static final String DATEPATTERN_YYYY_MM_DD_HH = "yyyy-MM-dd HH";
  22.  
  23.     public static final String DATEPATTERN_YYYY_MM = "yyyy-MM";
  24.     public static final String DATEPATTERN_YYYYMMDD = "yyyyMMdd";
  25.     public static final String DATEPATTERN_YYYYMM = "yyyyMM";
  26.  
  27.     /**
  28.      * 一天的秒数
  29.      */
  30.     public static final Integer ONE_DAY_SECONDS = 60 * 60 * 24;
  31.  
  32.     /**
  33.      * 24小时毫秒值
  34.      */
  35.     public static final long H24 = TimeUnit.HOURS.toMillis(24);
  36.     /**
  37.      * 1小时毫秒值
  38.      */
  39.     public static final long H1 = TimeUnit.HOURS.toMillis(1);
  40.  
  41.     public static Date parse(String string, String pattern) throws ParseException {
  42.         SimpleDateFormat format = new SimpleDateFormat(pattern);
  43.         return format.parse(string);
  44.     }
  45.  
  46.     public static Date parse2(String string, String pattern){
  47.         try {
  48.             SimpleDateFormat format = new SimpleDateFormat(pattern);
  49.             return format.parse(string);
  50.         }catch (Exception e){
  51.             log.error("date parse error. param1{}, param2:{}", string, pattern, e);
  52.         }
  53.         return null;
  54.     }
  55.  
  56.     public static Date getDayEnd(Date day){
  57.         String format = new SimpleDateFormat(DATEPATTERN_YYYY_MM_DD)
  58.                 .format(day);
  59.         return parse2( format + " 23:59:59", DEFAULTDATEPATTERN);
  60.     }
  61.  
  62.     public static Date getDayStart(Date day){
  63.         String format = new SimpleDateFormat(DATEPATTERN_YYYY_MM_DD)
  64.                 .format(day);
  65.         return parse2( format + " 00:00:00", DEFAULTDATEPATTERN);
  66.     }
  67.  
  68.     public static Date getYesterdayEnd(Date day){
  69.         Calendar instance = Calendar.getInstance();
  70.         instance.setTime(day);
  71.         instance.add(Calendar.HOUR, -24);
  72.         return getDayEnd(instance.getTime());
  73.     }
  74.  
  75.     /**
  76.      * 返回自定义格式字符串
  77.      */
  78.     public static String dateToString(Date date, String pattern) {
  79.         SimpleDateFormat formatter = new SimpleDateFormat(pattern);
  80.         return formatter.format(date);
  81.     }
  82.  
  83.     public static Date increaseDate(Date aDate, int days) {
  84.         Calendar cal = Calendar.getInstance();
  85.  
  86.         cal.setTime(aDate);
  87.         cal.add(Calendar.DAY_OF_MONTH, days);
  88.         return cal.getTime();
  89.     }
  90.  
  91.     /**
  92.      * Date 转换成 LocalDate
  93.      *
  94.      * @param date
  95.      * @return
  96.      */
  97.     public static LocalDate date2LocalDate(Date date) {
  98.         Instant instant = date.toInstant();
  99.         ZoneId zoneId = ZoneId.systemDefault();
  100.         LocalDate localDate = instant.atZone(zoneId).toLocalDate();
  101.         return localDate;
  102.     }
  103.  
  104.     /**
  105.      * LocalDate 转换成 Date
  106.      *
  107.      * @param localDate
  108.      * @return
  109.      */
  110.     public static Date localDate2Date(LocalDate localDate) {
  111.         ZoneId zoneId = ZoneId.systemDefault();
  112.         ZonedDateTime zdt = localDate.atStartOfDay(zoneId);
  113.         Date date = Date.from(zdt.toInstant());
  114.         return date;
  115.     }
  116.  
  117.     /**
  118.      * localDateTime 转换成 Date
  119.      *
  120.      * @param localDateTime
  121.      * @return
  122.      */
  123.     public static Date localDateTime2Date(LocalDateTime localDateTime) {
  124.         ZoneId zoneId = ZoneId.systemDefault();
  125.         ZonedDateTime zdt = localDateTime.atZone(zoneId);
  126.         Date date = Date.from(zdt.toInstant());
  127.         return date;
  128.     }
  129.  
  130.     /**
  131.      * Date 转换成 LocalDateTime
  132.      *
  133.      * @param date
  134.      */
  135.     public static LocalDateTime date2LocalDateTime(Date date) {
  136.         Instant instant = date.toInstant();
  137.         ZoneId zoneId = ZoneId.systemDefault();
  138.         LocalDateTime localDateTime = instant.atZone(zoneId).toLocalDateTime();
  139.         return localDateTime;
  140.     }
  141.  
  142.     /**
  143.      * 获取指定时间当天的0点
  144.      *
  145.      * @return
  146.      */
  147.     public static LocalDateTime getFirstSecond(LocalDate localDate) {
  148.         return LocalDateTime.of(localDate, LocalDateTime.MIN.toLocalTime());
  149.     }
  150.  
  151.     /**
  152.      * 获取指定时间当天的最后一秒
  153.      *
  154.      * @return
  155.      */
  156.     public static LocalDateTime getLastSecond(LocalDate localDate) {
  157.         return LocalDateTime.of(localDate, LocalDateTime.MAX.toLocalTime());
  158.     }
  159.  
  160.     /**
  161.      * 计算当前时间几小时之后的时间
  162.      *
  163.      * @param date  日期信息
  164.      * @param hours 小时信息
  165.      * @return 日期格式信息
  166.      */
  167.     public static Date addHours(Date date, long hours) {
  168.         return addMinutes(date, hours * 60);
  169.     }
  170.  
  171.     /**
  172.      * 计算当前时间几分钟之后的时间
  173.      *
  174.      * @param date    日期信息
  175.      * @param minutes 分钟信息
  176.      * @return 日期信息
  177.      */
  178.     public static Date addMinutes(Date date, long minutes) {
  179.         return addSeconds(date, minutes * 60);
  180.     }
  181.  
  182.     /**
  183.      * 计算当前时间几秒钟之后的时间
  184.      *
  185.      * @param date 日期信息
  186.      * @param secs 秒信息
  187.      * @return 日期信息
  188.      */
  190.     public static Date addSeconds(Date date, long secs) {
  191.         return new Date(date.getTime() + (secs * 1000));
  192.     }
  193.  
  194.  
  195.     /**
  196.      * 拿到明天0点的时间
  197.      * @return
  198.      */
  199.     public static Date getTomorrow() {
  200.         Calendar calendar = Calendar.getInstance();
  201.         calendar.setTime(new Date());
  202.         calendar.add(Calendar.DAY_OF_YEAR, 1);
  203.         calendar.set(Calendar.HOUR_OF_DAY, 0);
  204.         calendar.set(Calendar.MINUTE, 0);
  205.         calendar.set(Calendar.SECOND, 0);
  206.         calendar.set(Calendar.MILLISECOND, 0);
  207.         return calendar.getTime();
  208.     }
  209.  
  210.  
  211.     /**
  212.      * 获取一周中的周一
  213.      * @param date
  214.      * @return
  215.      */
  216.     public static Date getThisWeekMonday(Date date) {
  217.         Calendar cal = Calendar.getInstance();
  218.         cal.setTime(date);
  219.         // 获得当前日期是一个星期的第几天
  220.         int dayWeek = cal.get(Calendar.DAY_OF_WEEK);
  221.         if (1 == dayWeek) {
  222.             cal.add(Calendar.DAY_OF_MONTH, -1);
  223.         }
  224.         // 设置一个星期的第一天，按中国的习惯一个星期的第一天是星期一
  225.         cal.setFirstDayOfWeek(Calendar.MONDAY);
  226.         // 获得当前日期是一个星期的第几天
  227.         int day = cal.get(Calendar.DAY_OF_WEEK);
  228.         // 根据日历的规则，给当前日期减去星期几与一个星期第一天的差值
  229.         cal.add(Calendar.DATE, cal.getFirstDayOfWeek() - day);
  230.         return cal.getTime();
  231.     }
  232.  
  233.     public static void main(String[] args) {
  234.         System.out.println(getThisWeekMonday(new Date()));
  235.     }
  236. }

4、retryUtils

  1. package com.hema.cloud.util;
  2.  
  3. import lombok.extern.slf4j.Slf4j;
  4. import org.apache.commons.lang3.tuple.Pair;
  5.  
  6. import java.text.ParseException;
  7. import java.text.SimpleDateFormat;
  8. import java.time.Instant;
  9. import java.time.LocalDate;
  10. import java.time.LocalDateTime;
  11. import java.time.ZoneId;
  12. import java.time.ZonedDateTime;
  13. import java.util.Calendar;
  14. import java.util.Date;
  15. import java.util.concurrent.TimeUnit;
  16.  
  17. @Slf4j
  18. public class DateUtil {
  19.     public static final String DEFAULTDATEPATTERN = "yyyy-MM-dd HH:mm:ss";
  20.     public static final String DATEPATTERN_YYYY_MM_DD = "yyyy-MM-dd";
  21.     public static final String DATEPATTERN_YYYY_MM_DD_HH = "yyyy-MM-dd HH";
  22.  
  23.     public static final String DATEPATTERN_YYYY_MM = "yyyy-MM";
  24.     public static final String DATEPATTERN_YYYYMMDD = "yyyyMMdd";
  25.     public static final String DATEPATTERN_YYYYMM = "yyyyMM";
  26.  
  27.     /**
  28.      * 一天的秒数
  29.      */
  30.     public static final Integer ONE_DAY_SECONDS = 60 * 60 * 24;
  31.  
  32.     /**
  33.      * 24小时毫秒值
  34.      */
  35.     public static final long H24 = TimeUnit.HOURS.toMillis(24);
  36.     /**
  37.      * 1小时毫秒值
  38.      */
  39.     public static final long H1 = TimeUnit.HOURS.toMillis(1);
  40.  
  41.     public static Date parse(String string, String pattern) throws ParseException {
  42.         SimpleDateFormat format = new SimpleDateFormat(pattern);
  43.         return format.parse(string);
  44.     }
  45.  
  46.     public static Date parse2(String string, String pattern){
  47.         try {
  48.             SimpleDateFormat format = new SimpleDateFormat(pattern);
  49.             return format.parse(string);
  50.         }catch (Exception e){
  51.             log.error("date parse error. param1{}, param2:{}", string, pattern, e);
  52.         }
  53.         return null;
  54.     }
  55.  
  56.     public static Date getDayEnd(Date day){
  57.         String format = new SimpleDateFormat(DATEPATTERN_YYYY_MM_DD)
  58.                 .format(day);
  59.         return parse2( format + " 23:59:59", DEFAULTDATEPATTERN);
  60.     }
  61.  
  62.     public static Date getDayStart(Date day){
  63.         String format = new SimpleDateFormat(DATEPATTERN_YYYY_MM_DD)
  64.                 .format(day);
  65.         return parse2( format + " 00:00:00", DEFAULTDATEPATTERN);
  66.     }
  67.  
  68.     public static Date getYesterdayEnd(Date day){
  69.         Calendar instance = Calendar.getInstance();
  70.         instance.setTime(day);
  71.         instance.add(Calendar.HOUR, -24);
  72.         return getDayEnd(instance.getTime());
  73.     }
  74.  
  75.     /**
  76.      * 返回自定义格式字符串
  77.      */
  78.     public static String dateToString(Date date, String pattern) {
  79.         SimpleDateFormat formatter = new SimpleDateFormat(pattern);
  80.         return formatter.format(date);
  81.     }
  82.  
  83.     public static Date increaseDate(Date aDate, int days) {
  84.         Calendar cal = Calendar.getInstance();
  85.  
  86.         cal.setTime(aDate);
  87.         cal.add(Calendar.DAY_OF_MONTH, days);
  88.         return cal.getTime();
  89.     }
  90.  
  91.     /**
  92.      * Date 转换成 LocalDate
  93.      *
  94.      * @param date
  95.      * @return
  96.      */
  97.     public static LocalDate date2LocalDate(Date date) {
  98.         Instant instant = date.toInstant();
  99.         ZoneId zoneId = ZoneId.systemDefault();
  100.         LocalDate localDate = instant.atZone(zoneId).toLocalDate();
  101.         return localDate;
  102.     }
  103.  
  104.     /**
  105.      * LocalDate 转换成 Date
  106.      *
  107.      * @param localDate
  108.      * @return
  109.      */
  110.     public static Date localDate2Date(LocalDate localDate) {
  111.         ZoneId zoneId = ZoneId.systemDefault();
  112.         ZonedDateTime zdt = localDate.atStartOfDay(zoneId);
  113.         Date date = Date.from(zdt.toInstant());
  114.         return date;
  115.     }
  116.  
  117.     /**
  118.      * localDateTime 转换成 Date
  119.      *
  120.      * @param localDateTime
  121.      * @return
  122.      */
  123.     public static Date localDateTime2Date(LocalDateTime localDateTime) {
  124.         ZoneId zoneId = ZoneId.systemDefault();
  125.         ZonedDateTime zdt = localDateTime.atZone(zoneId);
  126.         Date date = Date.from(zdt.toInstant());
  127.         return date;
  128.     }
  129.  
  130.     /**
  131.      * Date 转换成 LocalDateTime
  132.      *
  133.      * @param date
  134.      */
  135.     public static LocalDateTime date2LocalDateTime(Date date) {
  136.         Instant instant = date.toInstant();
  137.         ZoneId zoneId = ZoneId.systemDefault();
  138.         LocalDateTime localDateTime = instant.atZone(zoneId).toLocalDateTime();
  139.         return localDateTime;
  140.     }
  141.  
  142.     /**
  143.      * 获取指定时间当天的0点
  144.      *
  145.      * @return
  146.      */
  147.     public static LocalDateTime getFirstSecond(LocalDate localDate) {
  148.         return LocalDateTime.of(localDate, LocalDateTime.MIN.toLocalTime());
  149.     }
  150.  
  151.     /**
  152.      * 获取指定时间当天的最后一秒
  153.      *
  154.      * @return
  155.      */
  156.     public static LocalDateTime getLastSecond(LocalDate localDate) {
  157.         return LocalDateTime.of(localDate, LocalDateTime.MAX.toLocalTime());
  158.     }
  159.  
  160.     /**
  161.      * 计算当前时间几小时之后的时间
  162.      *
  163.      * @param date  日期信息
  164.      * @param hours 小时信息
  165.      * @return 日期格式信息
  166.      */
  167.     public static Date addHours(Date date, long hours) {
  168.         return addMinutes(date, hours * 60);
  169.     }
  170.  
  171.     /**
  172.      * 计算当前时间几分钟之后的时间
  173.      *
  174.      * @param date    日期信息
  175.      * @param minutes 分钟信息
  176.      * @return 日期信息
  177.      */
  178.     public static Date addMinutes(Date date, long minutes) {
  179.         return addSeconds(date, minutes * 60);
  180.     }
  181.  
  182.     /**
  183.      * 计算当前时间几秒钟之后的时间
  184.      *
  185.      * @param date 日期信息
  186.      * @param secs 秒信息
  187.      * @return 日期信息
  188.      */
  189.  
  190.     public static Date addSeconds(Date date, long secs) {
  191.         return new Date(date.getTime() + (secs * 1000));
  192.     }
  193.  
  194.  
  195.     /**
  196.      * 拿到明天0点的时间
  197.      * @return
  198.      */
  199.     public static Date getTomorrow() {
  200.         Calendar calendar = Calendar.getInstance();
  201.         calendar.setTime(new Date());
  202.         calendar.add(Calendar.DAY_OF_YEAR, 1);
  203.         calendar.set(Calendar.HOUR_OF_DAY, 0);
  204.         calendar.set(Calendar.MINUTE, 0);
  205.         calendar.set(Calendar.SECOND, 0);
  206.         calendar.set(Calendar.MILLISECOND, 0);
  207.         return calendar.getTime();
  208.     }
  209.  
  210.  
  211.     /**
  212.      * 获取一周中的周一
  213.      * @param date
  214.      * @return
  215.      */
  216.     public static Date getThisWeekMonday(Date date) {
  217.         Calendar cal = Calendar.getInstance();
  218.         cal.setTime(date);
  219.         // 获得当前日期是一个星期的第几天
  220.         int dayWeek = cal.get(Calendar.DAY_OF_WEEK);
  221.         if (1 == dayWeek) {
  222.             cal.add(Calendar.DAY_OF_MONTH, -1);
  223.         }
  224.         // 设置一个星期的第一天，按中国的习惯一个星期的第一天是星期一
  225.         cal.setFirstDayOfWeek(Calendar.MONDAY);
  226.         // 获得当前日期是一个星期的第几天
  227.         int day = cal.get(Calendar.DAY_OF_WEEK);
  228.         // 根据日历的规则，给当前日期减去星期几与一个星期第一天的差值
  229.         cal.add(Calendar.DATE, cal.getFirstDayOfWeek() - day);
  230.         return cal.getTime();
  231.     }
  232.  
  233.     public static void main(String[] args) {
  234.         System.out.println(getThisWeekMonday(new Date()));
  235.     }
  236. }

4、convertUtils模型转化工具

  1. package com.wdk.ums.nlp.utils.convert;
  2.  
  3. import java.util.List;
  4. import java.util.function.Supplier;
  5. import java.util.stream.Collectors;
  6.  
  7. import org.springframework.beans.BeanUtils;
  8.  
  9. /**
  10.  * pojo转换工具类
  11.  *
  12.  * @author lich.wangy
  13.  * @date 2018-11-08
  14.  */
  15. public class ModelConvertUtils {
  16.  
  17.     /**
  18.      * 把source对象的属性复制到result对象中
  19.      *
  20.      * 例如将A a 转为B b
  21.      * B b = PojoConvertUtils.convert(a,B.class);
  22.      *
  23.      * @param source
  24.      * @param s
  25.      * @param <R>
  26.      * @param <S>
  27.      * @return
  28.      * @throws IllegalAccessException
  29.      * @throws InstantiationException
  30.      */
  31.     public static <R, S> R convert(S source, Supplier<R> s) {
  32.         if (source == null) {
  33.             return null;
  34.         }
  35.         R result = s.get();
  36.         BeanUtils.copyProperties(source, result);
  37.         return result;
  38.  
  39.     }
  40.  
  41.     /**
  42.      * 把source对象列表复制到result对象列表
  43.      * * 例如将List<A> a 转为List<B> b
  44.      * List<B> b = PojoConvertUtils.convert(a,B.class);
  45.      *
  46.      * @param sourceList
  47.      * @param supplier
  48.      * @param <R>
  49.      * @param <S>
  50.      * @return
  51.      * @throws IllegalAccessException
  52.      * @throws InstantiationException
  53.      */
  54.     public static <R, S> List<R> convert(List<S> sourceList, Supplier<R> supplier) {
  55.         if (sourceList == null) {
  56.             return null;
  57.         }
  58.         return sourceList.stream().map(each -> convert(each, supplier)).collect(Collectors.toList());
  59.     }
  60.  
  61. }

5、mysql中扩展字段用URL编码处理方式

  1. package com.cainiao.school.management.common.utils;
  2.  
  3. import com.alibaba.fastjson.JSON;
  4. import com.cainiao.school.management.common.enums.SiteManagementFeePatternEnum;
  5. import lombok.Data;
  6. import org.apache.commons.collections.MapUtils;
  7. import org.apache.commons.lang3.BooleanUtils;
  8. import org.apache.commons.lang3.StringUtils;
  9.  
  10. import java.io.UnsupportedEncodingException;
  11. import java.net.URLDecoder;
  12. import java.net.URLEncoder;
  13. import java.util.Date;
  14. import java.util.LinkedHashMap;
  15. import java.util.List;
  16. import java.util.Map;
  17.  
  18. /**
  19.  * <p>Description : {todo} </p>
  20.  *
  21.  * @author : lierlin
  22.  * @version : v1.0.0
  23.  * @since : 2020/6/29 17:06
  24.  **/
  25. public class FeatureUtil {
  26.  
  27.     public static final String SP = ";";
  28.     public static final String SSP = ":";
  29.     private static final String DEFAULT_CHARSET = "UTF-8";
  30.  
  31.     public static String getFeature(String feature,String key){
  32.         Map<String,String> featureMap = toMap(feature);
  33.         return featureMap.get(key);
  34.     }
  35.  
  36.     public static boolean getFeatureBoolean(String feature,String key){
  37.         Map<String,String> featureMap = toMap(feature);
  38.         String res = featureMap.get(key);
  39.         return BooleanUtils.toBoolean(res);
  40.     }
  41.  
  42.     /**
  43.      * map to string
  44.      *
  45.      * @param map the map
  46.      * @return the string
  47.      */
  48.     public static String toString(final Map<String, String> map) {
  49.  
  50.         final StringBuilder featureSB = new StringBuilder(SP);
  51.         if (MapUtils.isEmpty(map)) {
  52.             return featureSB.toString();
  53.         }
  54.  
  55.         for (Map.Entry<String, String> entry : map.entrySet()) {
  56.             final String k = entry.getKey();
  57.             final String v = entry.getValue();
  58.  
  59.             if (null == k                    || null == v) {
  60.                 // 过滤掉无效的kv对
  61.                 continue;
  62.             }
  63.  
  64.             try {
  65.                 featureSB
  66.                         .append(encode(k, v))
  67.                         .append(SP)
  68.                 ;
  69.             } catch (UnsupportedEncodingException e) {
  70.                 //TODO : log this
  71.             }
  72.  
  73.         }
  74.  
  75.         return featureSB.toString();
  76.  
  77.     }
  78.  
  79.  
  80.     /**
  81.      * string to map
  82.      *
  83.      * @param featureString the string
  84.      * @return the map
  85.      */
  86.     public static Map<String, String> toMap(final String featureString) {
  87.         final Map<String, String> map = new LinkedHashMap<>();
  88.  
  89.         if (StringUtils.isBlank(featureString)) {
  90.             return map;
  91.         }
  92.  
  93.         for (String kv : StringUtils.split(featureString, SP)) {
  94.  
  95.             if (StringUtils.isBlank(kv)) {
  96.                 // 过滤掉为空的字符串片段
  97.                 continue;
  98.             }
  99.  
  100.             final String[] ar = StringUtils.split(kv, SSP, 2);
  101.             if (ar.length != 2) {
  102.                 // 过滤掉不符合K:V单目的情况
  103.                 continue;
  104.             }
  105.  
  106.             final String k = ar[0];
  107.             final String v = ar[1];
  108.             if (StringUtils.isNotBlank(k)
  109.                     && StringUtils.isNotBlank(v)) {
  110.                 try {
  111.                     decode(map, k, v);
  112.                 } catch (UnsupportedEncodingException e) {
  113.                     // TODO : log this
  114.                 }
  115.             }
  116.  
  117.         }
  118.  
  119.         return map;
  120.     }
  121.  
  122.  
  123.     private static String encode(final String k, final String v) throws UnsupportedEncodingException {
  124.         return URLEncoder.encode(k, DEFAULT_CHARSET) + SSP + URLEncoder.encode(v, DEFAULT_CHARSET);
  125.     }
  126.  
  127.     private static void decode(final Map<String, String> map, final String k, final String v) throws UnsupportedEncodingException {
  128.         map.put(URLDecoder.decode(k, DEFAULT_CHARSET), URLDecoder.decode(v, DEFAULT_CHARSET));
  129.     }
  130.  
  131.     public static void main(String args[]){
  132.         String featureStr = ";iss_job_ins_id:776459745343;";
  133.         String res = getFeature(featureStr,"navigator_golden_sta");
  134.         boolean booleanRes = BooleanUtils.toBoolean(res);
  135.         System.out.println(booleanRes);
  136.  
  137.       String bb = "lierlin:lidalin";
  138.         System.out.println(URLEncoder.encode(bb));
  139.     }
  140. }

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