whyclxw
15 小时以前 bca92c7c2376f0e4d8d779251d45155b863b031c
src/main/java/com/whyc/util/ActionUtil.java
@@ -18,10 +18,14 @@
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.YearMonth;
import java.time.format.DateTimeFormatter;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import com.whyc.pojo.db_user.User;
public class ActionUtil {
@@ -29,6 +33,7 @@
   public static String time_yyyyMMddHHmmss = "yyyy-MM-dd HH:mm:ss";
   public static String time_yyyyMMdd = "yyyy-MM-dd";
   public static String time_yyyyMM = "yyyy-MM";
   public static String time_yyyy_MM = "yyyy_MM";
   public static String time_yyyyMMdd_HH_mm_ss = "yyyy-MM-dd_HH_mm_ss";
   public static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
   public static SimpleDateFormat sdfwithOutday = new SimpleDateFormat("yyyy_MM");
@@ -339,7 +344,6 @@
        cal.set(Calendar.DAY_OF_MONTH,day);  
        if(type==1){
           return   new   SimpleDateFormat( "yyyy-MM-dd ").format(cal.getTime())+"00:00:00";  
        } else if(type==2){
           return   new   SimpleDateFormat( "yyyy-MM-dd ").format(cal.getTime())+"09:00:00";  
        }else if(type==3){
@@ -647,7 +651,7 @@
      List<String> dateList = new ArrayList<>();
      LocalDate currentDate = startDate;
      DateTimeFormatter formatter = DateTimeFormatter.ofPattern(ActionUtil.time_yyyyMM);
      DateTimeFormatter formatter = DateTimeFormatter.ofPattern(ActionUtil.time_yyyy_MM);
      while (!currentDate.isAfter(endDate)) {
         String formattedDate = currentDate.format(formatter);
         dateList.add(formattedDate);
@@ -655,11 +659,36 @@
      }
      return dateList;
   }
   // 匹配 "_" 后跟一个字母(小写或大写)
   public static String toCamelCase(String input) {
      // 匹配 "_" 后跟一个字母(小写或大写)
      Pattern pattern = Pattern.compile("_(\\w)");
      Matcher matcher = pattern.matcher(input);
      StringBuffer result = new StringBuffer();
      while (matcher.find()) {
         // 将匹配到的字母转为大写,并替换掉前面的下划线
         matcher.appendReplacement(result, matcher.group(1).toUpperCase());
      }
      matcher.appendTail(result);
      return result.toString();
   }
   public static void main(String[] args) throws ParseException {
      List<String> dateList =getDateListBetweenDates(ActionUtil.sdf.parse("2025-01-01 00:00:00"),new Date());
      /*List<String> dateList =getDateListBetweenDates(ActionUtil.sdf.parse("2025-01-01 00:00:00"),new Date());
      for (String date : dateList) {
         System.out.println(date);
      }
      }*/
      //System.out.println(toCamelCase("user_name_and_age"));
      /*Date time1=getDateAdd(new Date(),-10);
      System.out.println(ActionUtil.sdf.format(time1));*/
      Map<String, List<String>> map = new HashMap<>();
      map.put("key1", Stream.of("value1", "value2").collect(Collectors.toList()));
      map.put("key2", Stream.of("value3", "value4").collect(Collectors.toList()));
      String result = map.values().stream()
            .flatMap(List::stream)
            .collect(Collectors.joining(","));
      System.out.println( result);
   }
}