JAVA宝藏工具hutool怎么用
这篇文章主要介绍JAVA宝藏工具hutool怎么用，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！
包含如下组件：
工程pom引入
cn.hutool hutool-all 5.7.5
下面就我自己的一些实验，贴一些常用代码示例吧，后面大家自己尝试下，还是非常好用的
字符串、时间、金额转换
@Test public void testConvert() { /** * 字符串编码转换 */ String a = "Hello 中国"; String hex = Convert.toHex(a, CharsetUtil.CHARSET_UTF_8); String raw = Convert.hexToStr(hex, CharsetUtil.CHARSET_UTF_8); System.out.println(raw); /** * 时间转换，毫秒转成XX小时等 */ long b = 1000 * 60 * 60 * 24; long mins = Convert.convertTime(b, TimeUnit.MILLISECONDS, TimeUnit.HOURS); System.out.println(mins); /** * 金额大小写转换 */ double c = 288.66; System.out.println(Convert.digitToChinese(c)); }Hello 中国
24
贰佰捌拾捌元陆角陆分
日期1
@Test public void testDateTime() throws InterruptedException { /** * 当前时间 */ Date now = DateUtil.date(); System.out.println(now); String nowString = DateUtil.now(); System.out.println(nowString); /** * 当前日期 */ String nowDate = DateUtil.today(); System.out.println(nowDate); /** * 字符串转日期 yyyy-MM-dd HH:mm:ss yyyy-MM-dd HH:mm:ss yyyy-MM-dd HH:mm yyyy-MM-dd * HH:mm:ss.SSS * * DatePattern */ String dateStr = "2021-2-12"; System.out.println(DateUtil.parse(dateStr)); System.out.println(DateUtil.parse(dateStr, "yyyy-MM-dd")); /** * 获取Date对象的某个部分 */ System.out.println(DateUtil.year(now)); System.out.println(DateUtil.month(now) + 1); System.out.println(DateUtil.dayOfMonth(now)); System.out.println(DateUtil.hour(now, true)); System.out.println(DateUtil.minute(now)); System.out.println(DateUtil.second(now)); /** * 开始和结束时间 */ System.out.println(DateUtil.beginOfDay(now)); System.out.println(DateUtil.endOfDay(now)); /** * 时间偏移 */ System.out.println(DateUtil.offsetHour(now, 3)); System.out.println(DateUtil.yesterday()); }2021-10-26 14:26:12
2021-10-26 14:26:12
2021-10-26
2021-02-12 00:00:00
2021-02-12 00:00:00
2021
10
26
14
26
12
2021-10-26 00:00:00
2021-10-26 23:59:59
2021-10-26 17:26:12
2021-10-25 14:26:13
日期2
@Test public void testDateTime2() throws InterruptedException { /** * 当前时间 */ Date now = DateUtil.date(); System.out.println(now); String nowString = DateUtil.now(); System.out.println(nowString); /** * 时间差 */ Date from = DateUtil.date(); Date end = DateUtil.offsetMillisecond(from, 988989898); System.out.println(DateUtil.between(from, end, DateUnit.HOUR)); System.out.println(DateUtil.between(from, end, DateUnit.DAY)); /** * 格式化时间差，默认精确到毫秒差距 */ System.out.println("差：" + DateUtil.formatBetween(from, end)); /** * 计时器 */ TimeInterval timer = DateUtil.timer(); Thread.sleep(2000L); System.out.println(timer.interval() + " ms"); timer.intervalRestart(); System.out.println(timer.intervalMinute() + " min"); /** * 格式化字符串 DatePattern */ /** * 农历 */ ChineseDate chineseDate = new ChineseDate(DateUtil.parseDate("2020-08-28")); String cyclicalYmd = chineseDate.getCyclicalYMD(); System.out.println(cyclicalYmd); /** * 对JDK 8 LocalDateTime和LocalDate的支持 */ }2021-10-26 14:26:47
2021-10-26 14:26:47
274
11
差：11天10小时43分9秒898毫秒
有限状态自动机-敏感词搜索
@Test public void testDfa() { WordTree tree = new WordTree(); tree.addWord("中国"); tree.addWord("移动"); tree.addWord("杭州"); tree.addWord("移动通信"); tree.addWord("杭州市"); tree.addWord("中国人"); String text = "中国移动在中国，都是中国人，移动杭研在杭州，杭州市"; List match = tree.matchAll(text, -1, false, false); System.out.println(match); } [中国, 移动, 中国, 中国, 移动, 杭州, 杭州]
加解密
@Test public void testEncDec() { String cont = "Hello"; String key = "Yw/Vz4kpJUv0+E/4/LuZEA=="; System.out.println("aes key = " + key); AES aes = SecureUtil.aes(Base64.decode(key)); byte[] encrypt = aes.encrypt(cont); String enc = Base64.encode(encrypt); System.out.println("密文:" + enc); byte[] decrypt = aes.decrypt(enc); System.out.println(new String(decrypt)); String str = SecureUtil.md5(cont); System.out.println("MD5: " + str); System.out.println("MD5 16位: " + DigestUtil.md5Hex16(cont)); System.out.println("SHA-256:" + DigestUtil.sha256Hex("Admin@888" + "9348ierj8truigjf03wioekrutgfhj")); // RSA RSA rsa = new RSA(); String privateKey = rsa.getPrivateKeyBase64(); String publicKey = rsa.getPublicKeyBase64(); System.out.println("私钥：" + privateKey); System.out.println("公钥：" + publicKey); String rsaEnc = rsa.encryptBase64(cont, KeyType.PublicKey); System.out.println("加密后：" + rsaEnc); System.out.println("解密后：" + rsa.decryptStr(rsaEnc, KeyType.PrivateKey)); PublicKey publicK = rsa.getPublicKey(); String modulus = HexUtil.encodeHexStr(((RSAPublicKey) publicK).getModulus().toByteArray()); String exponent = HexUtil.encodeHexStr(((RSAPublicKey) publicK).getPublicExponent().toByteArray()); System.out.println(modulus); System.out.println(exponent); HMac mac = new HMac(HmacAlgorithm.HmacSHA256, "password".getBytes()); // b977f4b13f93f549e06140971bded384 String macHex1 = mac.digestHex("123"); System.out.println("HAMC - " + macHex1); // 3DES加密 String content = "test中文"; byte[] desKey = SecureUtil.generateKey(SymmetricAlgorithm.DESede.getValue()).getEncoded(); SymmetricCrypto des = new SymmetricCrypto(SymmetricAlgorithm.DESede, desKey); // 加密 byte[] desEnc = des.encrypt(content); // 解密 byte[] desDec = des.decrypt(desEnc); // 加密为16进制字符串（Hex表示） String encryptHex = des.encryptHex(content); // 解密为字符串 //String decryptStr = des.decryptStr(encryptHex); System.out.println("3DES解密串：" + new String(desDec)); }aes key = Yw/Vz4kpJUv0+E/4/LuZEA==
密文:xNNdbJKZ/Ml4AWWD8YwO6A==
Hello
MD5: 8b1a9953c4611296a827abf8c47804d7
MD5 16位: c4611296a827abf8
SHA-256:01a83492e88f9a138e5ca0fd3ddb29b233088c70fdf2f1f511a6683b9e725f1d
私钥：MIICeAIBADANBgkqhkiG9w0BAQEFAASCAmIwggJeAgEAAoGBAMSTmbFNps1kNWXy/upzcMFvCdiMc6awisow6NZbyuEMs4JvGBt0SvvV51GonnUgPGXHD/BZ5Yq/V/V9Tq6bvy875gy8xyH5AXuRzboOnkKy2XtEsZOwCiKWeBcigWiyFuV/I7kK6WvAT/CJ5JyQabHzas4vZMKBSOg68cToPW3XAgMBAAECgYBcG50ESxJBYxbyMi3nxTesK089vHHkRQyDOO+goVoqoTzrfQqasp7/6XZ9+LhmwTgLqH57bGP14zpfuNtJTYkC0p+CnPPryfCaLxlIcypwmsHHoUSnYgZHAgybF+dDqHM4l9rrEXKpu8kj+Y+V7QbLfmooSPtHccrp/SvFXqqsQQJBAOF8iRyTbFOi77NjpdO1z1SwliyEj+uabJxCQsX0Jtghw1+tT7+UNtMSzrW/hKZ3hXBQmfNml/dPchBpHZJ9Km8CQQDfLYwO/aYf2OSjqZuLv7QMvczCcKK9jZ0qO3SesPmPEitVje3xaqfATBtNurkJ0bCv32zdF71BBrw55E02eMcZAkEAkBh+oqVPb69LUS9X9JBWG3/xqCdataxsxfrOIySggjQpX4Yo1XwJASAeuyTVx2/P9XN8voAMkz3Q3c3e2RNlvwJBAIG1DgaUYp11yARaib1h0DnrgXqsTdkO2f32iiPExXXiYG8byuOZUh+P2/qEABD13tOIbdPdfS+yw2h+CGYVMdkCQQDIN78dp2gVMnczWddP/Ak+ytSLhvsxeGnVIABw+55kXKyOg9ZolqRuFxv5wnscWQrKH7hzy6ZNmcI/q+enTtb4
公钥：MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDEk5mxTabNZDVl8v7qc3DBbwnYjHOmsIrKMOjWW8rhDLOCbxgbdEr71edRqJ51IDxlxw/wWeWKv1f1fU6um78vO+YMvMch+QF7kc26Dp5Cstl7RLGTsAoilngXIoFoshblfyO5CulrwE/wieSckGmx82rOL2TCgUjoOvHE6D1t1wIDAQAB
加密后：SF+hCQbOD5feqnE+codoDaODePYJvcvklrOZztBtoE3neNtcjAaCwAF+TzvMoELI5DDmaT2jVa5HObeW7SW2fBQ1f3xN+674z1GeblYXyo0Mr3LZmpFl5d2+VtpFGkewzBS77ThtMkk34MCq3b3nlA6DG65LC67xnDHHOtVshU8=
解密后：Hello
00c49399b14da6cd643565f2feea7370c16f09d88c73a6b08aca30e8d65bcae10cb3826f181b744afbd5e751a89e75203c65c70ff059e58abf57f57d4eae9bbf2f3be60cbcc721f9017b91cdba0e9e42b2d97b44b193b00a22967817228168b216e57f23b90ae96bc04ff089e49c9069b1f36ace2f64c28148e83af1c4e83d6dd7
010001
HAMC - c58e5f636d1bfdfbd351d9469c308519fe6695f69c08d5f98198459c86f2a746
3DES解密串：test中文
文件
@Test public void testFile() { File file = FileUtil.newFile("/apprun/test" + File.separator + "chiweitest-" + RandomUtil.randomString(10) + ".txt"); FileUtil.touch(file); }
雪花算法-ID生成
@Test public void testId() throws InterruptedException { int machine = getMachinePiece(); int process = getProcessPiece(); System.out.println(machine + "--" + process); System.out.println((machine & 31) + "--" + (process & 31)); Snowflake sf = IdUtil.getSnowflake(); // IdUtil.createSnowflake(machine&31, process&31); Map ids = MapUtil.newConcurrentHashMap(); int counter = 10; int threadNum = 2; TimeInterval timer = DateUtil.timer(); ConcurrencyTester tester = ThreadUtil.concurrencyTest(threadNum, () -> { // 测试的逻辑内容 for (int i = 0; i < counter; i++) { ids.put(sf.nextId(), ""); // String temp = IdUtil.randomUUID(); // ids.add(IdUtil.randomUUID()); } }); // 获取总的执行时间，单位毫秒 Console.log(tester.getInterval()); // 获取总的执行时间，单位毫秒 System.out.println(timer.interval() + " ms"); System.out.println("SIZE：" + ids.size()); System.out.println(ids); System.out.println(Long.MAX_VALUE); } 738459648--18962
0--18
39
45 ms
SIZE：20
{1452885332411842562=, 1452885332411842563=, 1452885332411842560=, 1452885332411842561=, 1452885332411842566=, 1452885332411842567=, 1452885332411842564=, 1452885332411842565=, 1452885332411842570=, 1452885332411842571=, 1452885332411842568=, 1452885332411842569=, 1452885332411842574=, 1452885332411842575=, 1452885332411842572=, 1452885332411842573=, 1452885332411842578=, 1452885332411842579=, 1452885332411842576=, 1452885332411842577=}
9223372036854775807
网络相关
@Test public void testNet() { String ip = "192.168.2.65"; long ipLong = 2130706433L; String long2ip = NetUtil.longToIpv4(ipLong); System.out.println(long2ip); long ip2long = NetUtil.ipv4ToLong(ip); System.out.println(ip2long); // 端口探测 System.out.println("端口是否连通：" + NetUtil.isUsableLocalPort(6379)); System.out.println("端口是否有效：" + NetUtil.isValidPort(77777)); // IP脱敏 System.out.println(NetUtil.hideIpPart(ip)); // 获取网卡信息 System.out.println(NetUtil.getNetworkInterfaces()); // eth5 (Realtek PCIe GBE Family Controller) System.out.println(NetUtil.getNetworkInterface("eth5")); System.out.println(NetUtil.LOCAL_IP); System.out.println("============================="); System.out.println(NetUtil.getLocalHostName()); }127.0.0.1
3232236097
端口是否连通：true
端口是否有效：false
192.168.2.*
[name:lo (Software Loopback Interface 1), name:net0 (WAN Miniport (SSTP)), name:net1 (WAN Miniport (L2TP)), name:net2 (WAN Miniport (PPTP)), name:ppp0 (WAN Miniport (PPPOE)), name:eth0 (WAN Miniport (IPv6)), name:eth2 (WAN Miniport (Network Monitor)), name:eth3 (WAN Miniport (IP)), name:ppp1 (RAS Async Adapter), name:net3 (WAN Miniport (IKEv2)), name:eth4 (Bluetooth 设备(个人区域网)), name:net4 (Bluetooth 设备(RFCOMM 协议 TDI)), name:eth5 (Realtek PCIe GBE Family Controller), name:wlan0 (Intel(R) Dual Band Wireless-AC 7260), name:net5 (Bluetooth 设备(RFCOMM 协议 TDI) #2), name:eth6 (Bluetooth 设备(个人区域网) #2), name:net6 (Microsoft 6to4 Adapter), name:eth7 (SecTap Adapter), name:eth7 (Sangfor SSL VPN CS Support System VNIC), name:net7 (Microsoft ISATAP Adapter #7), name:eth8 (TAP-Windows Adapter V9), name:net8 (Microsoft ISATAP Adapter #5), name:eth9 (VirtualBox Host-Only Ethernet Adapter), name:eth20 (Gateway NC Adapter), name:net9 (Microsoft ISATAP Adapter), name:net10 (Microsoft ISATAP Adapter #2), name:net11 (Microsoft ISATAP Adapter #6), name:net12 (Microsoft ISATAP Adapter #8), name:net13 (Microsoft ISATAP Adapter #3), name:net14 (Microsoft ISATAP Adapter #4), name:wlan1 (Microsoft Virtual WiFi Miniport Adapter), name:eth21 (Realtek PCIe GBE Family Controller-VirtualBox NDIS Light-Weight Filter-0000), name:eth22 (Realtek PCIe GBE Family Controller-QoS Packet Scheduler-0000), name:eth23 (Realtek PCIe GBE Family Controller-WFP LightWeight Filter-0000), name:eth24 (Realtek PCIe GBE Family Controller-Npcap Packet Driver (NPCAP)-0000), name:wlan2 (Intel(R) Dual Band Wireless-AC 7260-VirtualBox NDIS Light-Weight Filter-0000), name:wlan3 (Intel(R) Dual Band Wireless-AC 7260-QoS Packet Scheduler-0000), name:eth25 (Realtek PCIe GBE Family Controller-VpnCDrv LightWeight Filter-0000), name:eth26 (SecTap Adapter-VirtualBox NDIS Light-Weight Filter-0000), name:eth27 (SecTap Adapter-QoS Packet Scheduler-0000), name:eth28 (SecTap Adapter-WFP LightWeight Filter-0000), name:wlan4 (Intel(R) Dual Band Wireless-AC 7260-Npcap Packet Driver (NPCAP)-0000), name:eth29 (SecTap Adapter-Npcap Packet Driver (NPCAP)-0000), name:eth30 (WAN Miniport (Network Monitor)-Npcap Packet Driver (NPCAP)-0000), name:eth31 (WAN Miniport (Network Monitor)-VpnCDrv LightWeight Filter-0000), name:eth32 (WAN Miniport (Network Monitor)-QoS Packet Scheduler-0000), name:eth33 (WAN Miniport (IP)-Npcap Packet Driver (NPCAP)-0000), name:eth34 (WAN Miniport (IP)-VpnCDrv LightWeight Filter-0000), name:eth35 (WAN Miniport (IP)-QoS Packet Scheduler-0000), name:eth36 (WAN Miniport (IPv6)-Npcap Packet Driver (NPCAP)-0000), name:eth37 (WAN Miniport (IPv6)-VpnCDrv LightWeight Filter-0000), name:eth38 (WAN Miniport (IPv6)-QoS Packet Scheduler-0000), name:eth39 (Sangfor SSL VPN CS Support System VNIC-VirtualBox NDIS Light-Weight Filter-0000), name:eth40 (Sangfor SSL VPN CS Support System VNIC-QoS Packet Scheduler-0000), name:eth41 (Sangfor SSL VPN CS Support System VNIC-WFP LightWeight Filter-0000), name:eth42 (SecTap Adapter-VpnCDrv LightWeight Filter-0000), name:eth43 (Sangfor SSL VPN CS Support System VNIC-VpnCDrv LightWeight Filter-0000), name:eth44 (TAP-Windows Adapter V9-VirtualBox NDIS Light-Weight Filter-0000), name:eth45 (TAP-Windows Adapter V9-QoS Packet Scheduler-0000), name:eth46 (TAP-Windows Adapter V9-WFP LightWeight Filter-0000), name:wlan5 (Intel(R) Dual Band Wireless-AC 7260-Virtual WiFi Filter Driver-0000), name:eth47 (TAP-Windows Adapter V9-Npcap Packet Driver (NPCAP)-0000), name:eth48 (Gateway NC Adapter-VirtualBox NDIS Light-Weight Filter-0000), name:eth49 (Gateway NC Adapter-QoS Packet Scheduler-0000), name:eth50 (Gateway NC Adapter-WFP LightWeight Filter-0000), name:eth51 (Gateway NC Adapter-Npcap Packet Driver (NPCAP)-0000), name:eth52 (TAP-Windows Adapter V9-VpnCDrv LightWeight Filter-0000), name:eth53 (Bluetooth 设备(个人区域网) #2-Npcap Packet Driver (NPCAP)-0000), name:eth54 (Gateway NC Adapter-VpnCDrv LightWeight Filter-0000), name:wlan6 (Intel(R) Dual Band Wireless-AC 7260-Native WiFi Filter Driver-0000), name:wlan7 (Intel(R) Dual Band Wireless-AC 7260-VpnCDrv LightWeight Filter-0000), name:wlan8 (Intel(R) Dual Band Wireless-AC 7260-WFP LightWeight Filter-0000), name:ppp2 (RAS Async Adapter-Npcap Packet Driver (NPCAP)-0000)]
name:eth5 (Realtek PCIe GBE Family Controller)
127.0.0.1
=============================
chiwei-PC
URL相关
@Test public void testUrl() { System.out.println(URLUtil.toURI("//www.yisu.com/df/sdf/df").getHost()); }以上是"JAVA宝藏工具hutool怎么用"这篇文章的所有内容，感谢各位的阅读！希望分享的内容对大家有帮助，更多相关知识，欢迎关注行业资讯频道！
