keepingcoding

import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZoneOffset;
import java.util.Date;

public class DateUtils {

    private DateUtils() {

keepingcoding

public class HexUtils {

    private HexUtils() {
    }

    /**
     * 16进制转2进制
     *
     * @param str
     * @return

keepingcoding

import org.apache.commons.codec.binary.Base64;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;

keepingcoding

import javax.validation.*;
import java.util.*;

/**
 * 校验工具类
 */
public class ValidationUtils {

    /**
     * @param t          要校验的数据

keepingcoding

### MYSQL获取一整月的日期列
## 第一种
SELECT
	date_list,
	CASE
		DAYOFWEEK( date_list ) 
		WHEN 1 THEN
		'星期日' 
		WHEN 2 THEN
		'星期一' 

keepingcoding

<?xml version="1.0" encoding="UTF-8"?>
<!-- 共有8个级别，按照从低到高为：ALL < TRACE < DEBUG < INFO < WARN < ERROR < FATAL < OFF -->
<!-- status指定log4j本身的打印日志的级别 -->
<Configuration status="WARN">

	<Properties>
		<Property name="base.package">com.example.demo</Property>
		<Property name="log.level">${sys:log4j.log.level:-DEBUG}</Property>
		<Property name="logfile.path">${sys:log4j.logfile.path:-/data/logs/access}/@artifactId@</Property>
		<Property name="logfile.arch.path">${sys:log4j.logfile.path:-/data/logs/access}/@artifactId@/${date:yyyy-MM}</Property>

keepingcoding

import org.springframework.util.StringUtils;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class StringUtil {

    private StringUtil() {
    }

keepingcoding

import lombok.Getter;
import lombok.Setter;
import lombok.experimental.Accessors;

import java.io.Serializable;
import java.util.List;
import java.util.Map;

@Getter
@Setter

keepingcoding

package com.example.demo.config.ds;

import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;

keepingcoding

import java.io.Serializable;
import java.util.List;

/**
 * 分页Bean
 */
public class PageInfo implements Serializable {

    private static final long serialVersionUID = 1L;