245 lines
7.7 KiB
Java
245 lines
7.7 KiB
Java
package com.multictrl.common.utils;
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import cn.hutool.core.collection.CollUtil;
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import cn.hutool.core.util.StrUtil;
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import cn.hutool.json.JSONArray;
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import cn.hutool.json.JSONObject;
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import cn.hutool.json.JSONUtil;
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import com.drew.imaging.jpeg.JpegMetadataReader;
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import com.drew.imaging.jpeg.JpegProcessingException;
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import com.drew.imaging.mp4.Mp4MetadataReader;
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import com.drew.metadata.Directory;
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import com.drew.metadata.Metadata;
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import com.drew.metadata.Tag;
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import com.multictrl.common.exception.ExceptionUtils;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.commons.io.FileUtils;
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import java.io.File;
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import java.io.IOException;
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import java.math.BigDecimal;
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import java.math.RoundingMode;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.List;
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import java.util.Locale;
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/**
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* 通用工具
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*
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* @author Sdy
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* @since 1.0.0 2026/4/24
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*/
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@Slf4j
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public class Utils {
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/**
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* 线程休息n毫秒
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*/
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public static void sleep(long millis) {
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try {
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Thread.sleep(millis);
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} catch (InterruptedException e) {
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log.error("线程睡眠异常:{}", ExceptionUtils.getErrorStackTrace(e));
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}
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}
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/*
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* 驼峰转下划线
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*/
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public static JSONObject beanToSnakeJson(Object obj) {
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JSONObject camelJson = JSONUtil.parseObj(obj);
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JSONObject snakeJson = new JSONObject();
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for (String key : camelJson.keySet()) {
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String snakeKey = StrUtil.toUnderlineCase(key); // 驼峰转下划线
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Object value = camelJson.get(key);
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// 递归处理嵌套 JSONObject 或 JSONArray
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if (value instanceof JSONObject) {
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value = beanToSnakeJson(value); // 递归转换
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} else if (value instanceof JSONArray) {
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JSONArray arr = new JSONArray();
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for (Object item : (JSONArray) value) {
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if (item instanceof JSONObject) {
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arr.add(beanToSnakeJson(item));
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} else {
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arr.add(item);
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}
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}
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value = arr;
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}
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snakeJson.set(snakeKey, value);
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}
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return snakeJson;
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}
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/**
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* 获取最后两个字符
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* "a/b/c/d" "c/d"
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*/
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public static String getLastTwoSegments(String str, String separator) {
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if (StrUtil.isBlank(str)) return str;
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// 按分隔符切割
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List<String> parts = StrUtil.split(str, separator);
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if (parts.size() <= 2) {
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return str; // 不足两段则原样返回
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} else {
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// 取最后两段
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List<String> lastTwo = parts.subList(parts.size() - 2, parts.size());
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return CollUtil.join(lastTwo, String.valueOf(separator));
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}
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}
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/**
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* 文件转md5
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*/
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public static String md5File(String path) {
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StringBuilder sb = new StringBuilder();
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try {
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MessageDigest md = MessageDigest.getInstance("MD5");
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md.update(FileUtils.readFileToByteArray(new File(path)));
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byte[] b = md.digest();
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int d;
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for (byte value : b) {
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d = value;
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if (d < 0) {
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d = value & 0xff;
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// 与上一行效果等同
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// i += 256;
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}
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if (d < 16) {
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sb.append("0");
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}
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sb.append(Integer.toHexString(d));
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}
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} catch (NoSuchAlgorithmException | IOException e) {
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log.error("md5 fail", e);
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}
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return sb.toString();
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}
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/**
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* 获取文本的md5
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*/
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public static String md5Txt(String context) {
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try {
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MessageDigest md = MessageDigest.getInstance("MD5");
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byte[] buffer = context.getBytes();
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md.update(buffer, 0, buffer.length);
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byte[] digest = md.digest();
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StringBuilder sb = new StringBuilder();
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for (byte b : digest) {
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sb.append(String.format("%02x", b));
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}
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return sb.toString();
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} catch (NoSuchAlgorithmException exception) {
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log.error("md5 fail", exception);
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}
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return null;
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}
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/**
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* 获取图片的Windows XP Keywords
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*/
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public static String getImageWindowsXpKeywords(String mediaPath) {
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Metadata metadata;
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try {
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metadata = JpegMetadataReader.readMetadata(new File(mediaPath));
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for (Directory exif : metadata.getDirectories()) {
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for (Tag tag : exif.getTags()) {
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if ("Windows XP Keywords".equals(tag.getTagName())) {
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return tag.getDescription();
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}
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}
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}
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} catch (JpegProcessingException | IOException e) {
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log.error("error", e);
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}
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return null;
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}
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public static long getImageTime(String mediaPath) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy:MM:dd HH:mm:ss");
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Metadata metadata;
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try {
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metadata = JpegMetadataReader.readMetadata(new File(mediaPath));
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for (Directory exif : metadata.getDirectories()) {
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for (Tag tag : exif.getTags()) {
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if ("Date/Time".equals(tag.getTagName())) {
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return sdf.parse(tag.getDescription()).getTime();
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}
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}
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}
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} catch (JpegProcessingException | IOException e) {
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log.error("error", e);
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} catch (ParseException e) {
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throw new RuntimeException(e);
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}
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return 0;
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}
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public static long getVideoTime(String videoPath) {
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Metadata metadata;
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try {
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metadata = Mp4MetadataReader.readMetadata(new File(videoPath));
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for (Directory exif : metadata.getDirectories()) {
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for (Tag tag : exif.getTags()) {
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if ("Creation Time".equals(tag.getTagName())) {
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try {
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SimpleDateFormat sdf = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy",
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Locale.US);
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Date d = sdf.parse(tag.getDescription());
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return d.getTime();
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} catch (ParseException ignored) {
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}
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}
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}
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}
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} catch (IOException e) {
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log.error("error", e);
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}
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return 0;
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}
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/**
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* 格式化double，保留指定位小数（四舍五入）
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*
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* @param value 原始数值
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* @param scale 小数位数
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* @return 格式化后的字符串
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*/
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private static String format(double value, int scale) {
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if (Double.isNaN(value) || Double.isInfinite(value)) {
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return "0";
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}
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BigDecimal bd = BigDecimal.valueOf(value);
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bd = bd.setScale(scale, RoundingMode.HALF_UP);
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return bd.stripTrailingZeros().toPlainString();
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}
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/**
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* 字节数格式化为人性化字符串（自动选择B, KB, MB, GB, TB）
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* 1024进制
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*
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* @param bytes 字节数
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* @return 如 "1.45 GB"
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*/
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public static String formatBytes(long bytes) {
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if (bytes < 0) {
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return "0 B";
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}
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if (bytes < 1024) {
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return bytes + " B";
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}
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int exp = (int) (Math.log(bytes) / Math.log(1024));
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char pre = "KMGTPE".charAt(exp - 1);
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double result = bytes / Math.pow(1024, exp);
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return format(result, 2) + " " + pre + "B";
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}
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}
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