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

<dependency> <groupId>cn.hutool</groupId> <artifactId>hutool-all</artifactId> <version>5.7.5</version></dependency>

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() {    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);    long b = 1000 * 60 * 60 * 24;  long mins = Convert.convertTime(b, TimeUnit.MILLISECONDS, TimeUnit.HOURS);  System.out.println(mins);    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 {    Date now = DateUtil.date();  System.out.println(now);  String nowString = DateUtil.now();  System.out.println(nowString);    String nowDate = DateUtil.today();  System.out.println(nowDate);    String dateStr = "2021-2-12";  System.out.println(DateUtil.parse(dateStr));  System.out.println(DateUtil.parse(dateStr, "yyyy-MM-dd"));    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));    System.out.println(DateUtil.beginOfDay(now));  System.out.println(DateUtil.endOfDay(now));    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 {    Date now = DateUtil.date();  System.out.println(now);  String nowString = DateUtil.now();  System.out.println(nowString);    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));    System.out.println("差：" + DateUtil.fORMatBetween(from, end));    TimeInterval timer = DateUtil.timer();  Thread.sleep(2000L);  System.out.println(timer.interval() + " ms");  timer.intervalRestart();  System.out.println(timer.intervalMinute() + " min");      ChineseDate chineseDate = new ChineseDate(DateUtil.parseDate("2020-08-28"));  String cyclicalYmd = chineseDate.getCyclicalYMD();  System.out.println(cyclicalYmd);   }

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<String> 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：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
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<Long, String> 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()); }

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