java正则表达式结构子列表

java正则表达式构造子列表
本文权当参考，不喜勿踩Summary of regular-expression constructs

ConstructMatches CharactersxThe character x\\The backslash character\0nThe character with octal value 0n (0 <= n <= 7)\0nnThe character with octal value 0nn (0 <= n <= 7)\0mnnThe character with octal value 0mnn (0 <= m <= 3, 0 <= n <= 7)\xhhThe character with hexadecimal value 0xhh\uhhhhThe character with hexadecimal value 0xhhhh\tThe tab character ('\u0009')\nThe newline (line feed) character ('\u000A')\rThe carriage-return character ('\u000D')\fThe form-feed character ('\u000C')\aThe alert (bell) character ('\u0007')\eThe escape character ('\u001B')\cxThe control character corresponding to x Character classes[abc]a, b, or c (simple class)[^abc]Any character except a, b, or c (negation)[a-zA-Z]a through z or A through Z, inclusive (range)[a-d[m-p]]a through d, or m through p:[a-dm-p] (union)[a-z&&[def]]d, e, or f (intersection)[a-z&&[^bc]]a through z, except for b and c: [ad-z] (subtraction)[a-z&&[^m-p]]a through z, and not m through p: [a-lq-z](subtraction) Predefined character classes.Any character (may or may not match line terminators)\dA digit: [0-9]\DA non-digit: [^0-9]\sA whitespace character: [ \t\n\x0B\f\r]\SA non-whitespace character: [^\s]\wA word character: [a-zA-Z_0-9]\WA non-word character: [^\w] POSIX character classes (US-ASCII only)\p{Lower}A lower-case alphabetic character: [a-z]\p{Upper}An upper-case alphabetic character:[A-Z]\p{ASCII}All ASCII:[\x00-\x7F]\p{Alpha}An alphabetic character:[\p{Lower}\p{Upper}]\p{Digit}A decimal digit: [0-9]\p{Alnum}An alphanumeric character:[\p{Alpha}\p{Digit}]\p{Punct}Punctuation: One of !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~

java.lang.Character classes (simple java character type)\p{javaLowerCase}Equivalent to java.lang.Character.isLowerCase()\p{javaUpperCase}Equivalent to java.lang.Character.isUpperCase()\p{javaWhitespace}Equivalent to java.lang.Character.isWhitespace()\p{javaMirrored}Equivalent to java.lang.Character.isMirrored() Classes for Unicode blocks and categories\p{InGreek}A character in the Greek block (simple block)\p{Lu}An uppercase letter (simple category)\p{Sc}A currency symbol\P{InGreek}Any character except one in the Greek block (negation)[\p{L}&&[^\p{Lu}]] Any letter except an uppercase letter (subtraction) Boundary matchers^The beginning of a line$The end of a line\bA word boundary\BA non-word boundary\AThe beginning of the input\GThe end of the previous match\ZThe end of the input but for the final terminator, if any\zThe end of the input Greedy quantifiersX?X, once or not at allX*X, zero or more timesX+X, one or more timesX{n}X, exactly n timesX{n,}X, at least n timesX{n,m}X, at least n but not more than m times Reluctant quantifiersX??X, once or not at allX*?X, zero or more timesX+?X, one or more timesX{n}?X, exactly n timesX{n,}?X, at least n timesX{n,m}?X, at least n but not more than m times Possessive quantifiersX?+X, once or not at allX*+X, zero or more timesX++X, one or more timesX{n}+X, exactly n timesX{n,}+X, at least n timesX{n,m}+X, at least n but not more than m times Logical operatorsXYX followed by YX|YEither X or Y(X)X, as a capturing group Back references\nWhatever the nth capturing group matched Quotation\Nothing, but quotes the following character\QNothing, but quotes all characters until \E\ENothing, but ends quoting started by \Q