寫在前面
我們在日常的Java開發中,經常需要處理一些字符串,這個時候正則表達式是非常有用的。幾乎在所有的編程語言中都支持正則表達式。以下我將壓箱底多年的干貨搬出來給大家參考,都是我們日常使用頻次比較高的正則表達式,希望能能大大提高你的工作效率。如果本文對大家有幫助,大家可以關注“Tom彈架構”,后續會連載正則表達式的基礎知識。
1、整數
public static final String intege = "^-?[1-9]d*$/"; //整數 /** 正例 */ System.out.println(Pattern.matches(intege,"123")); // true System.out.println(Pattern.matches(intege,"-123")); // true /** 反例 */ System.out.println(Pattern.matches(intege,"abc")); // false System.out.println(Pattern.matches(intege,"0")); // false
2、正整數
public static final String intege1 = "^[1-9]d*$/"; //正整數 // 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、負整數
public static final String intege2 = "^-[1-9]d*$/"; //負整數 // 正例 System.out.println(Pattern.matches(intege2,"-123")); // true // 反例 System.out.println(Pattern.matches(intege2,"123")); // false System.out.println(Pattern.matches(intege2,"0")); // false
4、數字
public static final String num = "^([+-]?)d*.?d+$/"; //數字 // 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、正數(正整數 + 0)
public static final String num1 = "^[1-9]d*|0$/"; //正數(正整數 + 0) // 正例 System.out.println(Pattern.matches(num1,"123")); // true System.out.println(Pattern.matches(num1,"0")); // true // 反例 System.out.println(Pattern.matches(num1,"-123")); // false
6、負數(負整數 + 0)
public static final String num2 = "^-[1-9]d*|0$/"; //負數(負整數 + 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、浮點數
public static final String decmal = "^([+-]?)d*.d+$/"; //浮點數 // 正例 System.out.println(Pattern.matches(decmal,"-0.1")); // true System.out.println(Pattern.matches(decmal,"0.1")); // true // 反例 System.out.println(Pattern.matches(decmal,"a.b")); // false
8、正浮點數
public static final String decmal1 = "^[1-9]d*.d*|0.d*[1-9]d*$"; //正浮點數 // 正例 System.out.println(Pattern.matches(decmal1,"0.1")); // true // 反例 System.out.println(Pattern.matches(decmal1,"-0.1")); // false
9、負浮點數
public static final String decmal2 = "^-([1-9]d*.d*|0.d*[1-9]d*)$"; //負浮點數 // 正例 System.out.println(Pattern.matches(decmal2,"-0.1")); // true // 反例 System.out.println(Pattern.matches(decmal2,"0.1")); // false
10、浮點數
public static final String decmal3 = "^-?([1-9]d*.d*|0.d*[1-9]d*|0?.0+|0)$";//浮點數 // 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、非負浮點數(正浮點數 + 0)
public static final String decmal4 = "^[1-9]d*.d*|0.d*[1-9]d*|0?.0+|0$"; //非負浮點數(正浮點數 + 0) // 正例 System.out.println(Pattern.matches(decmal4,"0.1")); // true // 反例 System.out.println(Pattern.matches(decmal4,"-0.1")); // false
12、非正浮點數(負浮點數 + 0)
public static final String decmal5 = "^(-([1-9]d*.d*|0.d*[1-9]d*))|0?.0+|0$"; //非正浮點數(負浮點數 + 0) // 正例 System.out.println(Pattern.matches(decmal5,"-0.1")); // true // 反例 System.out.println(Pattern.matches(decmal5,"0.1")); // false
13、郵箱地址
public static final String email = "^w+((-w+)|(.w+))*@[A-Za-z0-9]+((.|-)[A-Za-z0-9]+)*.[A-Za-z0-9]+$"; //郵件 // 正例 System.out.println(Pattern.matches(email,"tom@gupaoedu.com")); // true // 反例 System.out.println(Pattern.matches(email,"tom.gupaoedu.com")); // false
14、顏色值匹配
public static final String color = "^[a-fA-F0-9]{6}$"; //顏色 // 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-./?%&=]*)?$"; //url // 正例 System.out.println(Pattern.matches(url,"http://www.xxx.com")); // true System.out.println(Pattern.matches(url,"https://www.xxx.com")); // true System.out.println(Pattern.matches(url,"www.xxx.com")); // true // 反例 System.out.println(Pattern.matches(url,"abcd")); // false
16、純僅中文字符
public static final String chinese = "^[u4E00-u9FA5uF900-uFA2D]+$"; //僅中文 // 正例 System.out.println(Pattern.matches(chinese,"湯姆彈架構")); // true // 反例 System.out.println(Pattern.matches(chinese,"Tom彈架構")); // false
17、僅ACSII字符
public static final String ascii = "^[x00-xFF]+$"; //僅ACSII字符 // 正例 System.out.println(Pattern.matches(ascii,"abc123")); // true // 反例 System.out.println(Pattern.matches(ascii,"にそ①②③")); // false
18、郵政編碼
public static final String zipcode = "^d{6}$"; //郵編 // 正例 System.out.println(Pattern.matches(zipcode,"100000")); // true // 反例 System.out.println(Pattern.matches(zipcode,"1000000")); // false
19、國內手機號碼
public static final String mobile = "^(13|15|16|17|18)[0-9]{9}$"; //手機 // 正例 System.out.println(Pattern.matches(zipcode,"13800138000")); // true // 反例 System.out.println(Pattern.matches(zipcode,"19900010002")); // false
20、IP V4 地址
public static final String ip4 = "^(25[0-5]|2[0-4]d|[0-1]d{2}|[1-9]?d).(25[0-5]|2[0-4]d|[0-1]d{2}|[1-9]?d).(25[0-5]|2[0-4]d|[0-1]d{2}|[1-9]?d).(25[0-5]|2[0-4]d|[0-1]d{2}|[1-9]?d)$"; //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+$"; //非空 // 正例 System.out.println(Pattern.matches(notempty," abc ")); // true // 反例 System.out.println(Pattern.matches(notempty,"")); // false
22、圖片后綴
public static final String picture = "(.*).(jpg|bmp|gif|ico|pcx|jpeg|tif|png|raw|tga|JPG|BMP|GIF|ICO|PCX|JPEG|TIF|PNG|RAW|TGA)$"; //圖片 // 正例 System.out.println(Pattern.matches(picture,"tom.jpg")); // true // 反例 System.out.println(Pattern.matches(picture,"tom.txt"")); // false
23、音頻后綴
public static final String audio = "(.*).(mp3|wma|mid|midi|wav|vqf|MP3|WMA|MID|MIDI|WAV|VQF)$"; //音頻 // 正例 System.out.println(Pattern.matches(audio,"tom.mp3")); // true // 反例 System.out.println(Pattern.matches(audio,"tom.txt"")); // false
24、視頻后綴
public static final String video = "(.*).(rm|3gp|mp4|rmvb|avi|wmv|flv|vob|exe|mkv|swf|RM|3GP|MP4|RMVB|AVI|WMV|FLV|VOB|EXE|MKV|SWF)$"; // 視頻格式 // 正例 System.out.println(Pattern.matches(video,"tom.mp4")); // true // 反例 System.out.println(Pattern.matches(video,"tom.txt"")); // false
25、壓縮文件后綴
public static final String rar = "(.*).(rar|zip|7zip|tgz|RAR|ZIP|7ZIP|TGZ)$"; //壓縮文件 // 正例 System.out.println(Pattern.matches(rar,"tom.zip")); // true // 反例 System.out.println(Pattern.matches(rar,"tom.txt"")); // false
26、日期格式
public static final String date = "^d{4}(-|/|.)d{1,2}1d{1,2}$"; //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、日期和時間格式
public static final String datetime = "^d{4}(-|/|.)d{1,2}1d{1,2}(sd{2}:)?(d{2}:)?(d{2})?$"; //日期和時間 // 正例 System.out.println(Pattern.matches(datetime,"2024-10-24 23:59:59")); // true System.out.println(Pattern.matches(datetime,"2024/10/24 23:59:59")); // true // 反例 System.out.println(Pattern.matches(datetime,"2024年10月24日 23時59分59秒"")); // false
28、QQ號碼
public static final String qq = "^[1-9]*[1-9][0-9]*$"; //QQ號碼 // 正例 System.out.println(Pattern.matches(qq,"123456")); // true // 反例 System.out.println(Pattern.matches(qq,"1234567890")); // false
29、電話號碼的函數(包括驗證國內區號,國際區號,分機號)
public static final String tel = "^(([0+]d{2,3}-)?(0d{2,3})-)?(d{7,8})(-(d{3,}))?$"; //電話號碼的函數(包括驗證國內區號,國際區號,分機號) // 正例 System.out.println(Pattern.matches(tel,"010-1234567")); // true System.out.println(Pattern.matches(tel,"0100-12345678")); // true // 反例 System.out.println(Pattern.matches(tel,"13800138000")); // false
30、用戶名注冊
public static final String username = "^[A-Za-z]w{5,}$"; //用來用戶注冊。匹配由數字、26個英文字母或者下劃線組成的字符串 // 正例 System.out.println(Pattern.matches(username,"gupaoedutom")); // true // 反例 System.out.println(Pattern.matches(username,"tom@gupaoedu")); // false
31、字母數字組合
public static final String allstring = "^w+$"; //字母數字組合 // 正例 System.out.println(Pattern.matches(allstring,"abc123")); // true // 反例 System.out.println(Pattern.matches(allstring,"abc123%^&")); // false
32、純字母
public static final String letter = "^[A-Za-z]+$"; //字母 // 正例 System.out.println(Pattern.matches(letter,"abc")); // true // 反例 System.out.println(Pattern.matches(letter,"abc123")); // false
33、純大寫字母
public static final String letter_u = "^[A-Z]+$"; //大寫字母 // 正例 System.out.println(Pattern.matches(letter_u,"ABC")); // true // 反例 System.out.println(Pattern.matches(letter_u,"abc")); // false
34、純小寫字母
public static final String letter_l = "^[a-z]+$"; //小寫字母 // 正例 System.out.println(Pattern.matches(letter_l,"abc")); // true // 反例 System.out.println(Pattern.matches(letter_l,"ABC")); // false
35、第二代身份證號碼匹配
public static final String idcard = "^[1-9]([0-9]{14}|[0-9]{17})$"; //身份證 // 正例 System.out.println(Pattern.matches(idcard,"100000201410241024")); // true // 反例 System.out.println(Pattern.matches(idcard,"1000002014102410240")); // false
36、數字或字母
public static final String numOrStr = "^[A-Za-z0-9]+$";//數字或字母 // 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,"服務器之家")); // false
到此這篇關于36個正則表達式(開發效率提高80%)的文章就介紹到這了,更多相關正則表達式內容請搜索服務器之家以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持服務器之家!
原文鏈接:https://www.jianshu.com/p/c7845439bb8b