收藏这36个正则表达式,开发效率提高80%
写在前面
【收藏这36个正则表达式,开发效率提高80%】我们在日常的Java开发中,经常需要处理一些字符串,这个时候正则表达式是非常有用的。几乎在所有的编程语言中都支持正则表达式。以下我将压箱底多年的干货搬出来给大家参考,都是我们日常使用频次比较高的正则表达式,希望能能大大提高你的工作效率。如果本文对大家有帮助,大家可以关注“Tom弹架构”,后续会连载正则表达式的基础知识。
1、整数
public static final String intege = "^-?[1-9]\\d*$/";
//整数/**正例 */
System.out.println(Pattern.matches(intege,"123"));
// true
System.out.println(Pattern.matches(intege,"-123"));
// true/**反例 */
System.out.println(Pattern.matches(intege,"abc"));
// false
System.out.println(Pattern.matches(intege,"0"));
// false
2、正整数
public static final String intege1 = "^[1-9]\\d*$/";
//正整数// 正例
System.out.println(Pattern.matches(intege1,"123"));
// true//反例
System.out.println(Pattern.matches(intege1,"-123"));
// false
System.out.println(Pattern.matches(intege1,"0"));
// false
3、负整数
public static final String intege2 = "^-[1-9]\\d*$/";
//负整数// 正例
System.out.println(Pattern.matches(intege2,"-123"));
// true// 反例
System.out.println(Pattern.matches(intege2,"123"));
// false
System.out.println(Pattern.matches(intege2,"0"));
// false
4、数字
public static final String num = "^([+-]?)\\d*\\.?\\d+$/";
//数字// 正例
System.out.println(Pattern.matches(num,"123"));
// true
System.out.println(Pattern.matches("0"));
// true// 反例
System.out.println(Pattern.matches(num,"a123"));
// false
5、正数(正整数 + 0)
public static final String num1 = "^[1-9]\\d*|0$/";
//正数(正整数 + 0)// 正例
System.out.println(Pattern.matches(num1,"123"));
// true
System.out.println(Pattern.matches(num1,"0"));
// true// 反例
System.out.println(Pattern.matches(num1,"-123"));
// false
6、负数(负整数 + 0)
public static final String num2 = "^-[1-9]\\d*|0$/";
//负数(负整数 + 0)// 正例
System.out.println(Pattern.matches(num2,"-123"));
// true
System.out.println(Pattern.matches(num2,"0"));
// true// 反例
System.out.println(Pattern.matches(num2,"123"));
// false
7、浮点数
public static final String decmal = "^([+-]?)\\d*\\.\\d+$/";
//浮点数// 正例
System.out.println(Pattern.matches(decmal,"-0.1"));
// true
System.out.println(Pattern.matches(decmal,"0.1"));
// true// 反例
System.out.println(Pattern.matches(decmal,"a.b"));
// false
8、正浮点数
public static final String decmal1 = "^[1-9]\\d*.\\d*|0.\\d*[1-9]\\d*$";
//正浮点数// 正例
System.out.println(Pattern.matches(decmal1,"0.1"));
// true// 反例
System.out.println(Pattern.matches(decmal1,"-0.1"));
// false
9、负浮点数
public static final String decmal2 = "^-([1-9]\\d*.\\d*|0.\\d*[1-9]\\d*)$";
//负浮点数// 正例
System.out.println(Pattern.matches(decmal2,"-0.1"));
// true// 反例
System.out.println(Pattern.matches(decmal2,"0.1"));
// false
10、浮点数
public static final String decmal3 = "^-?([1-9]\\d*.\\d*|0.\\d*[1-9]\\d*|0?.0+|0)$";
//浮点数// 正例
System.out.println(Pattern.matches(decmal3,"-0.1"));
// true
System.out.println(Pattern.matches(decmal3,"0.1"));
// true// 反例
System.out.println(Pattern.matches(decmal3,"a.b"));
// false
11、非负浮点数(正浮点数 + 0)
public static final String decmal4 = "^[1-9]\\d*.\\d*|0.\\d*[1-9]\\d*|0?.0+|0$";
//非负浮点数(正浮点数 + 0)// 正例
System.out.println(Pattern.matches(decmal4,"0.1"));
// true// 反例
System.out.println(Pattern.matches(decmal4,"-0.1"));
// false
12、非正浮点数(负浮点数 + 0)
public static final String decmal5 = "^(-([1-9]\\d*.\\d*|0.\\d*[1-9]\\d*))|0?.0+|0$";
//非正浮点数(负浮点数 + 0)// 正例
System.out.println(Pattern.matches(decmal5,"-0.1"));
// true// 反例
System.out.println(Pattern.matches(decmal5,"0.1"));
// false
13、邮箱地址
public static final String email = "^\\w+((-\\w+)|(\\.\\w+))*\\@[A-Za-z0-9]+((\\.|-)[A-Za-z0-9]+)*\\.[A-Za-z0-9]+$";
//邮件// 正例
System.out.println(Pattern.matches(email,"tom@gupaoedu.com"));
// true// 反例
System.out.println(Pattern.matches(email,"tom.gupaoedu.com"));
// false
14、颜色值匹配
public static final String color = "^[a-fA-F0-9]{6}$";
//颜色// 正例
System.out.println(Pattern.matches(color,"ffffff"));
// true
System.out.println(Pattern.matches(color,"FFFFFF"));
// true// 反例
System.out.println(Pattern.matches(color,"#FFFFFF"));
// false
System.out.println(Pattern.matches(color,"white"));
// false
15、url匹配
public static final String url = "^http[s]?:\\/\\/([\\w-]+\\.)+[\\w-]+([\\w-.\\/?%&=]*)?$";
//url// 正例
System.out.println(Pattern.matches(url,"http://www.xxx.com"));
// true
System.out.println(Pattern.matches(url,"https://www.xxx.com"));
// true
System.out.println(Pattern.matches(url,"www.xxx.com"));
// true// 反例
System.out.println(Pattern.matches(url,"abcd"));
// false
16、纯仅中文字符
public static final String chinese = "^[\\u4E00-\\u9FA5\\uF900-\\uFA2D]+$";
//仅中文// 正例
System.out.println(Pattern.matches(chinese,"汤姆弹架构"));
// true// 反例
System.out.println(Pattern.matches(chinese,"Tom弹架构"));
// false
17、仅ACSII字符
public static final String ascii = "^[\\x00-\\xFF]+$";
//仅ACSII字符// 正例
System.out.println(Pattern.matches(ascii,"abc123"));
// true// 反例
System.out.println(Pattern.matches(ascii,"にそ①②③"));
// false
18、邮政编码
public static final String zipcode = "^\\d{6}$";
//邮编// 正例
System.out.println(Pattern.matches(zipcode,"100000"));
// true// 反例
System.out.println(Pattern.matches(zipcode,"1000000"));
// false
19、国内手机号码
public static final String mobile = "^(13|15|16|17|18)[0-9]{9}$";
//手机// 正例
System.out.println(Pattern.matches(zipcode,"13800138000"));
// true// 反例
System.out.println(Pattern.matches(zipcode,"19900010002"));
// false
20、IP V4 地址
public static final String ip4 = "^(25[0-5]|2[0-4]\\d|[0-1]\\d{2}|[1-9]?\\d)\\.(25[0-5]|2[0-4]\\d|[0-1]\\d{2}|[1-9]?\\d)\\.(25[0-5]|2[0-4]\\d|[0-1]\\d{2}|[1-9]?\\d)\\.(25[0-5]|2[0-4]\\d|[0-1]\\d{2}|[1-9]?\\d)$";
//ip地址// 正例
System.out.println(Pattern.matches(zipcode,"127.0.0.1"));
// true// 反例
System.out.println(Pattern.matches(zipcode,"aa.bb.cc.dd"));
// false
21、非空字符
public static final String notempty = "^\\S+$";
//非空// 正例
System.out.println(Pattern.matches(notempty,"abc "));
// true// 反例
System.out.println(Pattern.matches(notempty,""));
// false
22、图片后缀
public static final String picture = "(.*)\\.(jpg|bmp|gif|ico|pcx|jpeg|tif|png|raw|tga|JPG|BMP|GIF|ICO|PCX|JPEG|TIF|PNG|RAW|TGA)$";
//图片// 正例
System.out.println(Pattern.matches(picture,"tom.jpg"));
// true// 反例
System.out.println(Pattern.matches(picture,"tom.txt""));
// false
23、音频后缀
public static final String audio = "(.*)\\.(mp3|wma|mid|midi|wav|vqf|MP3|WMA|MID|MIDI|WAV|VQF)$";
//音频// 正例
System.out.println(Pattern.matches(audio,"tom.mp3"));
// true// 反例
System.out.println(Pattern.matches(audio,"tom.txt""));
// false
24、视频后缀
public static final String video = "(.*)\\.(rm|3gp|mp4|rmvb|avi|wmv|flv|vob|exe|mkv|swf|RM|3GP|MP4|RMVB|AVI|WMV|FLV|VOB|EXE|MKV|SWF)$";
// 视频格式// 正例
System.out.println(Pattern.matches(video,"tom.mp4"));
// true// 反例
System.out.println(Pattern.matches(video,"tom.txt""));
// false
25、压缩文件后缀
public static final String rar = "(.*)\\.(rar|zip|7zip|tgz|RAR|ZIP|7ZIP|TGZ)$";
//压缩文件// 正例
System.out.println(Pattern.matches(rar,"tom.zip"));
// true// 反例
System.out.println(Pattern.matches(rar,"tom.txt""));
// false
26、日期格式
public static final String date = "^\\d{4}(\\-|\\/|\\.)\\d{1,2}\\1\\d{1,2}$";
//日期// 正例
System.out.println(Pattern.matches(date,"2024-10-24"));
// true
System.out.println(Pattern.matches(date,"2024/10/24"));
// true// 反例
System.out.println(Pattern.matches(date,"2024年10月24日""));
// false
27、日期和时间格式
public static final String datetime = "^\\d{4}(\\-|\\/|\\.)\\d{1,2}\\1\\d{1,2}(\\s\\d{2}:)?(\\d{2}:)?(\\d{2})?$";
//日期和时间// 正例
System.out.println(Pattern.matches(datetime,"2024-10-24 23:59:59"));
// true
System.out.println(Pattern.matches(datetime,"2024/10/24 23:59:59"));
// true// 反例
System.out.println(Pattern.matches(datetime,"2024年10月24日 23时59分59秒""));
// false
28、QQ号码
public static final String qq = "^[1-9]*[1-9][0-9]*$";
//QQ号码// 正例
System.out.println(Pattern.matches(qq,"123456"));
// true// 反例
System.out.println(Pattern.matches(qq,"1234567890"));
// false
29、电话号码的函数(包括验证国内区号,国际区号,分机号)
public static final String tel = "^(([0\\+]\\d{2,3}-)?(0\\d{2,3})-)?(\\d{7,8})(-(\\d{3,}))?$";
//电话号码的函数(包括验证国内区号,国际区号,分机号)// 正例
System.out.println(Pattern.matches(tel,"010-1234567"));
// true
System.out.println(Pattern.matches(tel,"0100-12345678"));
// true// 反例
System.out.println(Pattern.matches(tel,"13800138000"));
// false
30、用户名注册
public static final String username = "^[A-Za-z]\\w{5,}$";
//用来用户注册。匹配由数字、26个英文字母或者下划线组成的字符串// 正例
System.out.println(Pattern.matches(username,"gupaoedutom"));
// true// 反例
System.out.println(Pattern.matches(username,"tom@gupaoedu"));
// false
31、字母数字组合
public static final String allstring = "^\\w+$";
//字母数字组合// 正例
System.out.println(Pattern.matches(allstring,"abc123"));
// true// 反例
System.out.println(Pattern.matches(allstring,"abc123%^&"));
// false
32、纯字母
public static final String letter = "^[A-Za-z]+$";
//字母// 正例
System.out.println(Pattern.matches(letter,"abc"));
// true// 反例
System.out.println(Pattern.matches(letter,"abc123"));
// false
33、纯大写字母
public static final String letter_u = "^[A-Z]+$";
//大写字母// 正例
System.out.println(Pattern.matches(letter_u,"ABC"));
// true// 反例
System.out.println(Pattern.matches(letter_u,"abc"));
// false
34、纯小写字母
public static final String letter_l = "^[a-z]+$";
//小写字母// 正例
System.out.println(Pattern.matches(letter_l,"abc"));
// true// 反例
System.out.println(Pattern.matches(letter_l,"ABC"));
// false
35、第二代身份证号码匹配
public static final String idcard = "^[1-9]([0-9]{14}|[0-9]{17})$";
//身份证// 正例
System.out.println(Pattern.matches(idcard,"100000201410241024"));
// true// 反例
System.out.println(Pattern.matches(idcard,"1000002014102410240"));
// false
36、数字或字母
public static final String numOrStr = "^[A-Za-z0-9]+$";
//数字或字母// 正例
System.out.println(Pattern.matches(numOrStr,"abc123"));
// true
System.out.println(Pattern.matches(numOrStr,"abc"));
// true
System.out.println(Pattern.matches(numOrStr,"123"));
// true// 反例
System.out.println(Pattern.matches(numOrStr,"Tom弹架构"));
// false
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