Hutool工具使用
介绍
在大家日常工作中，都常常会做如下这些非常繁琐的工作。
这个是作者根据https://how2j.cn/k/hutool/hutool-url/1952.html#nowhere大佬的文档做的笔记。
开始
导入maven包
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>5.3.5</version>
</dependency>
public static void main(String[] args) {
// Date 和 String之间转换 String dateStr = "2012-12-12 12:12:12"; Date date = DateUtil.parse(dateStr); System.out.println(date); }
十六进制编码工具
//判断是否是十六进制 // String s1 = "12"; // boolean b1 = HexUtil.isHexNumber(s1); // String s2 = "0x12"; // boolean b2 = HexUtil.isHexNumber(s2); // // System.out.println("字符串" + s1+ "是否十六机制"+b1); // System.out.println("字符串" +s2+ "是否十六机制"+b2); //颜色转换 可以将# 转换为rgb Color color1 = Color.red; String s1 = HexUtil.encodeColor(color1); String s2 = "#112233"; Color color2 = HexUtil.decodeColor(s2); System.out.println("颜色对象1"+color1+ "字符串"+s1); System.out.println("字符串"+s2+ "颜色对象2"+color2);
转义工具
//转义与反转义 String s1 = "<script>location.href='http://how2j.cn';</script>"; String s2 = EscapeUtil.escapeHtml4(s1); String s3 = EscapeUtil.unescapeHtml4(s2); System.out.println("源数据" + s1 + "转意后" + s2); System.out.println("源数据" + s2 + "转意后" + s3);
运行控制台输出
Hash工具
// hash算法 String s = "hello word!"; int number = 12; long hash1 = HashUtil.additiveHash(s, Integer.MAX_VALUE); long hash2 = HashUtil.rotatingHash(s, Integer.MAX_VALUE); long hash3 = HashUtil.oneByOneHash(s); long hash4 = HashUtil.bernstein(s); long hash7 = HashUtil.fnvHash(s); long hash8 = HashUtil.intHash(number); long hash9 = HashUtil.rsHash(s); long hash10 = HashUtil.jsHash(s); long hash11 = HashUtil.pjwHash(s); long hash12 = HashUtil.elfHash(s); long hash13 = HashUtil.bkdrHash(s); long hash14 = HashUtil.sdbmHash(s); long hash15 = HashUtil.djbHash(s); long hash16 = HashUtil.dekHash(s); long hash17 = HashUtil.apHash(s); long hash18 = HashUtil.tianlHash(s); long hash19 = HashUtil.javaDefaultHash(s); long hash20 = HashUtil.mixHash(s); System.out.println("源数据" + s + "加法算法对应的哈希值" + hash1); System.out.println("源数据" + s + "旋转算法对应的哈希值" + hash2); System.out.println("源数据" + s + "一次一个算法对应的哈希值" + hash3); System.out.println("源数据" + s + "Bernstein's算法对应的哈希值" + hash4); System.out.println("源数据" + s + "改进的32位FNV 算法对应的哈希值" + hash7); System.out.println("源数据" + s + "Thomas Wang的整数算法对应的哈希值" + hash8); System.out.println("源数据" + s + "RS算法对应的哈希值" + hash9); System.out.println("源数据" + s + "JS算法对应的哈希值" + hash10); System.out.println("源数据" + s + "PJ算法对应的哈希值" + hash11); System.out.println("源数据" + s + "ELF算法对应的哈希值" + hash12); System.out.println("源数据" + s + "BKDR算法对应的哈希值" + hash13); System.out.println("源数据" + s + "SDBM算法对应的哈希值" + hash14); System.out.println("源数据" + s + "DJB算法对应的哈希值" + hash15); System.out.println("源数据" + s + "DEK算法对应的哈希值" + hash16); System.out.println("源数据" + s + "AP算法对应的哈希值" + hash17); System.out.println("源数据" + s + "TianL算法对应的哈希值" + hash18); System.out.println("源数据" + s + "JAVA自己带算法对应的哈希值" + hash19); System.out.println("源数据" + s + "混合算法对应的哈希值" + hash20);
运行控制台输出
"C:\Program Files\Java\jdk1.8.0_261\bin\java.exe" "-javaagent:D:\java\IntelliJ IDEA 2019.1.1\lib\idea_rt.jar=65217:D:\java\IntelliJ IDEA 2019.1.1\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_261\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_261\jre\lib\rt.jar;D:\project\get1\gitLabel\shar\demo\target\classes;D:\java\Maven\apache-maven-3.6.3-bin\repository\cn\hutool\hutool-all\5.3.5\hutool-all-5.3.5.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\boot\spring-boot-starter\2.4.1\spring-boot-starter-2.4.1.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\boot\spring-boot\2.4.1\spring-boot-2.4.1.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\spring-context\5.3.2\spring-context-5.3.2.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\boot\spring-boot-autoconfigure\2.4.1\spring-boot-autoconfigure-2.4.1.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\boot\spring-boot-starter-logging\2.4.1\spring-boot-starter-logging-2.4.1.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\ch\qos\logback\logback-classic\1.2.3\logback-classic-1.2.3.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\ch\qos\logback\logback-core\1.2.3\logback-core-1.2.3.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\apache\logging\log4j\log4j-to-slf4j\2.13.3\log4j-to-slf4j-2.13.3.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\apache\logging\log4j\log4j-api\2.13.3\log4j-api-2.13.3.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\slf4j\jul-to-slf4j\1.7.30\jul-to-slf4j-1.7.30.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\jakarta\annotation\jakarta.annotation-api\1.3.5\jakarta.annotation-api-1.3.5.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\spring-core\5.3.2\spring-core-5.3.2.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\spring-jcl\5.3.2\spring-jcl-5.3.2.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\yaml\snakeyaml\1.27\snakeyaml-1.27.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\slf4j\slf4j-api\1.7.30\slf4j-api-1.7.30.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\boot\spring-boot-starter-web\2.4.0\spring-boot-starter-web-2.4.0.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\boot\spring-boot-starter-json\2.4.1\spring-boot-starter-json-2.4.1.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\com\fasterxml\jackson\core\jackson-databind\2.11.3\jackson-databind-2.11.3.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\com\fasterxml\jackson\core\jackson-annotations\2.11.3\jackson-annotations-2.11.3.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\com\fasterxml\jackson\core\jackson-core\2.11.3\jackson-core-2.11.3.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.11.3\jackson-datatype-jdk8-2.11.3.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.11.3\jackson-datatype-jsr310-2.11.3.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.11.3\jackson-module-parameter-names-2.11.3.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\boot\spring-boot-starter-tomcat\2.4.1\spring-boot-starter-tomcat-2.4.1.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\apache\tomcat\embed\tomcat-embed-core\9.0.41\tomcat-embed-core-9.0.41.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\glassfish\jakarta.el\3.0.3\jakarta.el-3.0.3.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.41\tomcat-embed-websocket-9.0.41.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\spring-web\5.3.2\spring-web-5.3.2.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\spring-beans\5.3.2\spring-beans-5.3.2.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\spring-webmvc\5.3.2\spring-webmvc-5.3.2.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\spring-aop\5.3.2\spring-aop-5.3.2.jar;D:\java\Maven\apache-maven-3.6.3-bin\repository\org\springframework\spring-expression\5.3.2\spring-expression-5.3.2.jar" com.example.demo.IOOpeation 源数据hello word!加法算法对应的哈希值1052 源数据hello word!旋转算法对应的哈希值1385059675 源数据hello word!一次一个算法对应的哈希值-998279044 源数据hello word!Bernstein's算法对应的哈希值1239941009 源数据hello word!改进的32位FNV 算法对应的哈希值1699685277 源数据hello word!Thomas Wang的整数算法对应的哈希值-321385985 源数据hello word!RS算法对应的哈希值306546121 源数据hello word!JS算法对应的哈希值1584115779 源数据hello word!PJ算法对应的哈希值18588753 源数据hello word!ELF算法对应的哈希值18588753 源数据hello word!BKDR算法对应的哈希值1310282217 源数据hello word!SDBM算法对应的哈希值430342793 源数据hello word!DJB算法对应的哈希值894551926 源数据hello word!DEK算法对应的哈希值2090529829 源数据hello word!AP算法对应的哈希值1868402362 源数据hello word!TianL算法对应的哈希值169635427 源数据hello word!JAVA自己带算法对应的哈希值1794105737 源数据hello word!混合算法对应的哈希值7705625467680662429 Process finished with exit code 0
URL工具
// URLUtil使用举例 String url1 = "baidu.cn"; String url2 = "http://baidu.com"; String urlb = URLUtil.encode(url2); String urlc = URLUtil.decode(urlb); String urld = URLUtil.getPath(url2); p1("原数据 ",url2, "编码数据 ",urlb); p1("编码数据",urlb, "解码数据 ",urlc); p1("原数据 ",url2, "对应路径路径",urld);
base-32-64转换工具
// base-32-64转换 String charset = "utf-8"; String content = "Hello Word!"; p3("原字符串",content); String code32= Base32.encode(content, charset); content = Base32.decodeStr(code32,charset); p3("32位编码后",code32); p3("32位解码",content); String code64= Base64.encode(content, charset); content = Base64.decodeStr(code64,charset); p3("64位编码后",code64); p3("64位解码",content);
运行控制台输出
Unicode工具
String charset = "utf-8"; String content = "hello word"; p3("原字符串",content); String unicode= UnicodeUtil.toUnicode(content); content = UnicodeUtil.toString(unicode); p3("获取unicode",unicode); p3("转会原字符串",content);
转换工具
// 转换为字符串 int a = 1; String aStr = Convert.toStr(a); int[] b = {1,2,3,4,5}; String bStr = Convert.toStr(b); Object c = null; String cStr = Convert.toStr(c,"空字符串(默认值)"); p1("整数", a, "字符串" , aStr); p1("long数组", b, "字符串" , bStr); p1("空对象", c, "字符串" , cStr); // 数组类型互相转化 String[] a = { "1", "2", "3", "4" }; Integer[] b = Convert.toIntArray(a); p1("字符串数组", Convert.toStr(a), "Integer数组" , Convert.toStr(b)); // 数组和集合互换 String[] a = { "1", "2", "3", "4" }; List<?> l = Convert.toList(a); String[] b= Convert.toStrArray(l); p1("字符串数组", a, "集合" , l); p1("集合", l, "字符串数组" , b); // 半角全角互相转换 String a = "123456789"; String b = Convert.toSBC(a); String c = Convert.toDBC(b); p1("半角", a, "全角" , b); p1("全角", b, "半角" , c); // Unicode和字符串转换 String a = "how2j的Hutool教程"; String unicode = Convert.strToUnicode(a); String b = Convert.unicodeToStr(unicode); p1("字符串", a, "unicode" , unicode); p1("unicode", unicode, "字符串" , b); // 不同编码之间的转换 String a = "how2j的Hutool教程"; //转换后result为乱码 String b = Convert.convertCharset(a, CharsetUtil.UTF_8, CharsetUtil.ISO_8859_1); String c = Convert.convertCharset(b, CharsetUtil.ISO_8859_1, "UTF-8"); p1("UTF-8", a, "IOS-8859-1" , b); p1("IOS-8859-1", b, "UTF-8" , c); // 数字转换为金额 double a= 1234567123456.12; String b = Convert.digitToChinese(a); p1("数字", a, "钞票金额" , b); // 原始类和包装类转换 Class<?> wrapClass = Integer.class; Class<?> unWraped = Convert.unWrap(wrapClass); Class<?> primitiveClass = long.class; Class<?> wraped = Convert.wrap(primitiveClass); p1("包装类型", wrapClass, "原始类型" , unWraped); p1("原始类型", primitiveClass, "wraped" , wraped);
日期工具
public static void main(String[] args) { test0(); test1(); test3(); } public static void test0() { // 字符串转日期 Date d; String str3 = "12:12:12"; d = DateUtil.parse(str3); p1("字符串",str3, "日期格式",d); String str1 = "2012-12-12"; d = DateUtil.parse(str1); p1("字符串",str1, "日期格式",d); String str4 = "2012-12-12 12:12"; d = DateUtil.parse(str4); p1("字符串",str4, "日期格式",d); String str2 = "2012-12-12 12:12:12"; d = DateUtil.parse(str2); p1("字符串",str2, "日期格式",d); } public static void test1() { // 日期转字符串 Date d = new Date(); //结果 2017/03/01 String format = DateUtil.format(d, "yyyy/MM/dd"); //常用格式的格式化，结果：2017-03-01 String formatDate = DateUtil.formatDate(d); //结果：2017-03-01 00:00:00 String formatDateTime = DateUtil.formatDateTime(d); //结果：00:00:00 String formatTime = DateUtil.formatTime(d); p1("日期格式",d, "自定义格式的字符串",format); p1("日期格式",d, "只是日期格式",formatDate); p1("日期格式",d, "日期和时间格式",formatDateTime); p1("日期格式",d, "只是时间格式",formatTime); } public static void test3() { // 开始和结束时间 Date date = new Date(); //一天的开始，结果：2017-03-01 00:00:00 Date beginOfDay = DateUtil.beginOfDay(date); //一天的结束，结果：2017-03-01 23:59:59 Date endOfDay = DateUtil.endOfDay(date); p1("当前日期",DateUtil.formatDateTime(date), "开始时间",beginOfDay); p1("当前日期",DateUtil.formatDateTime(date), "结束时间",endOfDay); }