寫在前面
我們?cè)谌粘５腏ava開發(fā)中，經(jīng)常需要處理一些字符串，這個(gè)時(shí)候正則表達(dá)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(dá)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?nèi)粘Ｊ褂妙l次比較高的正則表達(dá)式，希望能能大大提高你的工作效率。如果本文對(duì)大家有幫助，大家可以關(guān)注“Tom彈架構(gòu)”，后續(xù)會(huì)連載正則表達(dá)式的基礎(chǔ)知識(shí)。
1、整數(shù)
public static final String intege = "^-?[1-9]d*$/"; //整數(shù) /** 正例 */ System.out.println(Pattern.matches(intege,"123")); // true System.out.println(Pattern.matches(intege,"-123")); // true /** 反例 */ System.out.println(Pattern.matches(intege,"abc")); // false System.out.println(Pattern.matches(intege,"0")); // false
2、正整數(shù)
public static final String intege1 = "^[1-9]d*$/"; //正整數(shù) // 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(fù)整數(shù)
public static final String intege2 = "^-[1-9]d*$/"; //負(fù)整數(shù) // 正例 System.out.println(Pattern.matches(intege2,"-123")); // true // 反例 System.out.println(Pattern.matches(intege2,"123")); // false System.out.println(Pattern.matches(intege2,"0")); // false
4、數(shù)字
public static final String num = "^([+-]?)d*.?d+$/"; //數(shù)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(shù)（正整數(shù) + 0）
public static final String num1 = "^[1-9]d*|0$/"; //正數(shù)（正整數(shù) + 0）
// 正例
System.out.println(Pattern.matches(num1,"123")); // true
System.out.println(Pattern.matches(num1,"0")); // true
// 反例
System.out.println(Pattern.matches(num1,"-123")); // false
6、負(fù)數(shù)（負(fù)整數(shù) + 0）
public static final String num2 = "^-[1-9]d*|0$/"; //負(fù)數(shù)（負(fù)整數(shù) + 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(diǎn)數(shù)
public static final String decmal = "^([+-]?)d*.d+$/"; //浮點(diǎn)數(shù)
// 正例
System.out.println(Pattern.matches(decmal,"-0.1")); // true
System.out.println(Pattern.matches(decmal,"0.1")); // true
// 反例
System.out.println(Pattern.matches(decmal,"a.b")); // false
8、正浮點(diǎn)數(shù)
public static final String decmal1 = "^[1-9]d*.d*|0.d*[1-9]d*$"; //正浮點(diǎn)數(shù)
// 正例
System.out.println(Pattern.matches(decmal1,"0.1")); // true
// 反例
System.out.println(Pattern.matches(decmal1,"-0.1")); // false
9、負(fù)浮點(diǎn)數(shù)
public static final String decmal2 = "^-([1-9]d*.d*|0.d*[1-9]d*)$"; //負(fù)浮點(diǎn)數(shù)
// 正例
System.out.println(Pattern.matches(decmal2,"-0.1")); // true
// 反例
System.out.println(Pattern.matches(decmal2,"0.1")); // false
10、浮點(diǎn)數(shù)
public static final String decmal3 = "^-?([1-9]d*.d*|0.d*[1-9]d*|0?.0+|0)$";//浮點(diǎn)數(shù)
// 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(fù)浮點(diǎn)數(shù)（正浮點(diǎn)數(shù) + 0）
public static final String decmal4 = "^[1-9]d*.d*|0.d*[1-9]d*|0?.0+|0$"; //非負(fù)浮點(diǎn)數(shù)（正浮點(diǎn)數(shù) + 0）
// 正例
System.out.println(Pattern.matches(decmal4,"0.1")); // true
// 反例
System.out.println(Pattern.matches(decmal4,"-0.1")); // false
12、非正浮點(diǎn)數(shù)（負(fù)浮點(diǎn)數(shù) + 0）
public static final String decmal5 = "^(-([1-9]d*.d*|0.d*[1-9]d*))|0?.0+|0$"; //非正浮點(diǎn)數(shù)（負(fù)浮點(diǎn)數(shù) + 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]+$"; //郵件
// 正例
System.out.println(Pattern.matches(email,"[email protected]")); // true
// 反例
System.out.println(Pattern.matches(email,"tom.gupaoedu.com")); // false
14、顏色值匹配
public static final String color = "^[a-fA-F0-9]{6}$"; //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(gòu)")); // true
// 反例
System.out.println(Pattern.matches(chinese,"Tom彈架構(gòu)")); // 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(nèi)手機(jī)號(hào)碼
public static final String mobile = "^(13|15|16|17|18)[0-9]{9}$"; //手機(jī)
// 正例
System.out.println(Pattern.matches(zipcode,"13800138000")); // true
// 反例
System.out.println(Pattern.matches(zipcode,"19900010002")); // false
20、IP V4 地址
public static final String ip4 = "^(25[0-5]|2[0-4]d|[0-1]d{2}|[1-9]?d).(25[0-5]|2[0-4]d|[0-1]d{2}|[1-9]?d).(25[0-5]|2[0-4]d|[0-1]d{2}|[1-9]?d).(25[0-5]|2[0-4]d|[0-1]d{2}|[1-9]?d)$"; //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(shí)間格式
public static final String datetime = "^d{4}(-|/|.)d{1,2}1d{1,2}(sd{2}:)?(d{2}:)?(d{2})?$"; //日期和時(shí)間
// 正例
System.out.println(Pattern.matches(datetime,"2024-10-24 23:59:59")); // true
System.out.println(Pattern.matches(datetime,"2024/10/24 23:59:59")); // true
// 反例
System.out.println(Pattern.matches(datetime,"2024年10月24日 23時(shí)59分59秒"")); // false
28、QQ號(hào)碼
public static final String qq = "^[1-9]*[1-9][0-9]*$"; //QQ號(hào)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(hào)碼的函數(shù)(包括驗(yàn)證國內(nèi)區(qū)號(hào),國際區(qū)號(hào),分機(jī)號(hào))
public static final String tel = "^(([0+]d{2,3}-)?(0d{2,3})-)?(d{7,8})(-(d{3,}))?$"; //電話號(hào)碼的函數(shù)(包括驗(yàn)證國內(nèi)區(qū)號(hào),國際區(qū)號(hào),分機(jī)號(hào))
// 正例
System.out.println(Pattern.matches(tel,"010-1234567")); // true
System.out.println(Pattern.matches(tel,"0100-12345678")); // true
// 反例
System.out.println(Pattern.matches(tel,"13800138000")); // false
30、用戶名注冊(cè)
public static final String username = "^[A-Za-z]w{5,}$"; //用來用戶注冊(cè)。匹配由數(shù)字、26個(gè)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(shù)字組合
public static final String allstring = "^w+$"; //字母數(shù)字組合
// 正例
System.out.println(Pattern.matches(allstring,"abc123")); // true
// 反例
System.out.println(Pattern.matches(allstring,"abc123%^&")); // false
32、純字母
public static final String letter = "^[A-Za-z]+$"; //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(hào)碼匹配
public static final String idcard = "^[1-9]([0-9]{14}|[0-9]{17})$"; //身份證
// 正例
System.out.println(Pattern.matches(idcard,"100000201410241024")); // true
// 反例
System.out.println(Pattern.matches(idcard,"1000002014102410240")); // false
36、數(shù)字或字母
public static final String numOrStr = "^[A-Za-z0-9]+$";//數(shù)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(wù)器之家")); // false
到此這篇關(guān)于36個(gè)正則表達(dá)式(開發(fā)效率提高80%)的文章就介紹到這了,更多相關(guān)正則表達(dá)式內(nèi)容請(qǐng)搜索服務(wù)器之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持服務(wù)器之家！
原文鏈接：https://www.jianshu.com/p/c7845439bb8b
