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寫(xiě)在前面

我們?cè)谌粘５腏AVA開(kāi)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(yǔ)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(lái)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-\u9FA5\uF900-\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(guó)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}\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、日期和時(shí)間格式

    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(guó)內(nèi)區(qū)號(hào),國(guó)際區(qū)號(hào),分機(jī)號(hào))

    public static final String tel = "^(([0\+]\d{2,3}-)?(0\d{2,3})-)?(\d{7,8})(-(\d{3,}))?$";    //電話號(hào)碼的函數(shù)(包括驗(yàn)證國(guó)內(nèi)區(qū)號(hào),國(guó)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(lái)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(xiě)字母

    public static final String letter_u = "^[A-Z]+$";                    //大寫(xiě)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(xiě)字母

    public static final String letter_l = "^[a-z]+$";                    //小寫(xiě)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,"Tom彈架構(gòu)")); // false

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