{"id":16139,"date":"2024-07-30T14:41:57","date_gmt":"2024-07-30T06:41:57","guid":{"rendered":"https:\/\/92it.top\/?p=16139"},"modified":"2024-07-30T14:41:57","modified_gmt":"2024-07-30T06:41:57","slug":"%e4%b8%80%e6%96%87%e8%ae%b2%e9%80%8f-java-regex%e6%ad%a3%e5%88%99%e8%a1%a8%e8%be%be%e5%bc%8f%ef%bc%81","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=16139","title":{"rendered":"\u4e00\u6587\u8bb2\u900f Java Regex\u6b63\u5219\u8868\u8fbe\u5f0f\uff01"},"content":{"rendered":"\n<p>\u8f6c\u8f7d\uff1a<a href=\"https:\/\/mp.weixin.qq.com\/s?__biz=MzIwNDAyOTI2Nw==&amp;mid=2247498618&amp;idx=2&amp;sn=b2069efd08cfd7b00fc89f900b7fd8e9&amp;chksm=96c4d746a1b35e5000f17ea4a5afd8024219bc35fce36d3f10423b173e04a21dfc099164a85b&amp;cur_album_id=2818595943724974083&amp;scene=190#rd\">\u4e00\u6587\u8bb2\u900f Java Regex\u6b63\u5219\u8868\u8fbe\u5f0f\uff01<\/a><\/p>\n\n\n\n<p>\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u4e00\u79cd\u7528\u4e8e\u63cf\u8ff0\u5b57\u7b26\u4e32\u6a21\u5f0f\u7684\u5de5\u5177\uff0c\u5b83\u5728\u6587\u672c\u5904\u7406\u3001\u6570\u636e\u9a8c\u8bc1\u3001\u641c\u7d22\u548c\u66ff\u6362\u7b49\u65b9\u9762\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\u3002\u8fd9\u7bc7\u6587\u7ae0\uff0c\u6211\u4eec\u5c06\u5206\u6790\u4ec0\u4e48\u662f\u6b63\u5219\u8868\u8fbe\u5f0f\u4ee5\u53ca\u5b83\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff1f<\/p>\n\n\n\n<p><strong>\u4ec0\u4e48\u662f\u6b63\u5219\u8868\u8fbe\u5f0f?<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u6b63\u5219\u8868\u8fbe\u5f0f\uff08regular expression\uff0c\u5e38\u7b80\u5199\u4e3a regex\u3001regexp \u6216 RE\uff09\uff0c\u53c8\u79f0\u89c4\u5f8b\u8868\u8fbe\u5f0f\u3001\u6b63\u89c4\u8868\u793a\u5f0f\u3001\u6b63\u89c4\u8868\u793a\u6cd5\u3001\u89c4\u5219\u8fd0\u7b97\u5f0f\u3001\u5e38\u89c4\u8868\u793a\u6cd5\uff0c\u662f\u8ba1\u7b97\u673a\u79d1\u5b66\u6982\u5ff5\uff0c\u7528\u7b80\u5355\u5b57\u4e32\u6765\u63cf\u8ff0\u3001\u5339\u914d\u6587\u4e2d\u5168\u90e8\u7b26\u5408\u6307\u5b9a\u683c\u5f0f\u7684\u5b57\u4e32\uff0c\u73fe\u5728\u5f88\u591a\u6587\u672c\u7f16\u8f91\u5668\u90fd\u652f\u63f4\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u641c\u5bfb\u3001\u53d6\u4ee3\u7b26\u5408\u6307\u5b9a\u683c\u5f0f\u7684\u5b57\u4e32\u3002<\/p>\n\n\n\n<p>Java Regex\u662f\u4e00\u79cd\u7528\u4e8e\u5339\u914d\u5b57\u7b26\u4e32\u7684\u6a21\u5f0f\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u9a8c\u8bc1\u3001\u67e5\u627e\u3001\u66ff\u6362\u6216\u62c6\u5206\u5b57\u7b26\u4e32\u3002Java\u4e2d\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u7531 <code>java.util.regex<\/code>\u5305\u63d0\u4f9b\uff0c\u4e3b\u8981\u7531 3 \u4e2a\u7c7b\u548c 1 \u4e2a\u63a5\u53e3\u7ec4\u6210\uff1a<\/p>\n\n\n\n<ul>\n<li>Pattern Class\uff1a\u8868\u793a\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u7f16\u8bd1\u8868\u793a\u3002<\/li>\n\n\n\n<li>Matcher Class\uff1a\u7528\u4e8e\u6267\u884c\u5339\u914d\u64cd\u4f5c\u7684\u5f15\u64ce\u3002<\/li>\n\n\n\n<li>PatternSyntaxException Class\uff1a\u8868\u793a\u6b63\u5219\u8868\u8fbe\u5f0f\u8bed\u6cd5\u9519\u8bef\u7684\u5f02\u5e38\u3002<\/li>\n\n\n\n<li>MatchResult Interface\uff1a\u7528\u4e8e\u8868\u793a\u5339\u914d\u64cd\u4f5c\u7684\u7ed3\u679c\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"503\" src=\"https:\/\/92it.top\/wp-content\/uploads\/2024\/07\/\u56fe\u7247-143-1024x503.png\" alt=\"\" class=\"wp-image-16140\" style=\"width:462px;height:auto\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2024\/07\/\u56fe\u7247-143-1024x503.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2024\/07\/\u56fe\u7247-143-300x147.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2024\/07\/\u56fe\u7247-143-768x378.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2024\/07\/\u56fe\u7247-143-830x408.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2024\/07\/\u56fe\u7247-143-230x113.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2024\/07\/\u56fe\u7247-143-350x172.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2024\/07\/\u56fe\u7247-143-480x236.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2024\/07\/\u56fe\u7247-143.png 1192w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p><strong>\u6b63\u5219\u8868\u8fbe\u5f0f\u7ec4\u6210<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>Java \u6b63\u5219\u8868\u8fbe\u5f0f\u4e3b\u8981\u7531\u4ee5\u4e0b\u51e0\u90e8\u5206\u7ec4\u6210\uff1a<\/p>\n\n\n\n<ul>\n<li>\u5b57\u7b26\u7c7b\uff1a\u7528\u4e8e\u5339\u914d\u6307\u5b9a\u8303\u56f4\u5185\u7684\u4efb\u610f\u5b57\u7b26\u3002\u4f8b\u5982<code>[a-z]<\/code>\u8868\u793a\u5339\u914d\u4efb\u610f\u5c0f\u5199\u5b57\u6bcd\u3002<\/li>\n\n\n\n<li>\u9884\u5b9a\u4e49\u5b57\u7b26\u7c7b\uff1a\u7b80\u5316\u7684\u5b57\u7b26\u7c7b\u3002\u4f8b\u5982<code>\\d<\/code>\u8868\u793a\u5339\u914d\u4efb\u610f\u6570\u5b57\uff0c<code>\\w<\/code>\u8868\u793a\u5339\u914d\u4efb\u610f\u5b57\u6bcd\u3001\u6570\u5b57\u6216\u4e0b\u5212\u7ebf\u3002<\/li>\n\n\n\n<li>\u91cf\u8bcd\uff1a\u7528\u4e8e\u6307\u5b9a\u5b57\u7b26\u6216\u5b50\u8868\u8fbe\u5f0f\u7684\u91cd\u590d\u6b21\u6570\u3002\u4f8b\u5982<code>a*<\/code>\u8868\u793a\u5339\u914d\u96f6\u6b21\u6216\u591a\u6b21 a\uff0c<code>a{2,4}<\/code>\u8868\u793a\u5339\u914d 2 \u5230 4 \u6b21 a\u3002<\/li>\n\n\n\n<li>\u8fb9\u754c\u5339\u914d\u7b26\uff1a\u7528\u4e8e\u5339\u914d\u5b57\u7b26\u4e32\u7684\u8fb9\u754c\u3002\u4f8b\u5982<code>^<\/code>\u8868\u793a\u5339\u914d\u5b57\u7b26\u4e32\u7684\u5f00\u59cb\uff0c<code>$<\/code>\u8868\u793a\u5339\u914d\u5b57\u7b26\u4e32\u7684\u7ed3\u675f\u3002<\/li>\n\n\n\n<li>\u5206\u7ec4\uff1a\u7528\u4e8e\u5c06\u591a\u4e2a\u5b57\u7b26\u6216\u5b50\u8868\u8fbe\u5f0f\u7ec4\u5408\u5728\u4e00\u8d77\u3002\u4f8b\u5982<code>(abc)<\/code>\u8868\u793a\u5339\u914d\u5b57\u7b26\u4e32 &#8220;abc&#8221;\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e0b\u9762\u8fd8\u5217\u4e3e\u4e86\u4e00\u4e9b\u5e38\u89c1\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u5143\u7d20\uff1a<\/p>\n\n\n\n<ul>\n<li><code>.<\/code>: \u5339\u914d\u9664\u6362\u884c\u7b26\u4ee5\u5916\u7684\u4efb\u610f\u5355\u5b57\u7b26<\/li>\n\n\n\n<li><code>*<\/code>: \u5339\u914d\u524d\u9762\u7684\u5b50\u8868\u8fbe\u5f0f\u96f6\u6b21\u6216\u591a\u6b21<\/li>\n\n\n\n<li><code>+<\/code>: \u5339\u914d\u524d\u9762\u7684\u5b50\u8868\u8fbe\u5f0f\u4e00\u6b21\u6216\u591a\u6b21<\/li>\n\n\n\n<li><code>?<\/code>: \u5339\u914d\u524d\u9762\u7684\u5b50\u8868\u8fbe\u5f0f\u96f6\u6b21\u6216\u4e00\u6b21<\/li>\n\n\n\n<li><code>\\d<\/code>: \u5339\u914d\u4e00\u4e2a\u6570\u5b57\u5b57\u7b26\uff0c[0-9] \u7684\u7f29\u5199<\/li>\n\n\n\n<li><code>\\D<\/code> \u5339\u914d\u4efb\u4f55\u975e\u6570\u5b57\uff0c[^0-9] \u7684\u7f29\u5199<\/li>\n\n\n\n<li><code>\\s<\/code> \u4efb\u4f55\u7a7a\u683c\u5b57\u7b26\uff0c[\\t\\n\\x0B\\f\\r] \u7684\u7f29\u5199<\/li>\n\n\n\n<li><code>\\S<\/code> \u4efb\u4f55\u975e\u7a7a\u683c\u5b57\u7b26\uff0c\u662f [^\\s] \u7684\u7f29\u5199<\/li>\n\n\n\n<li><code>\\w<\/code>: \u5339\u914d\u4e00\u4e2a\u5b57\u6bcd\u3001\u6570\u5b57\u6216\u4e0b\u5212\u7ebf\u5b57\u7b26<\/li>\n\n\n\n<li><code>[abc]<\/code>: \u5339\u914d\u65b9\u62ec\u53f7\u5185\u7684\u4efb\u610f\u4e00\u4e2a\u5b57\u7b26<\/li>\n\n\n\n<li><code>^<\/code>: \u5339\u914d\u5b57\u7b26\u4e32\u7684\u5f00\u59cb<\/li>\n\n\n\n<li><code>$<\/code>: \u5339\u914d\u5b57\u7b26\u4e32\u7684\u7ed3\u675f<\/li>\n<\/ul>\n\n\n\n<p>\u66f4\u591a\u8868\u8fbe\u5f0f\uff0c\u53c2\u8003: regexr<\/p>\n\n\n\n<p><strong>Regex \u7c7b\u8be6\u89e3<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Matcher<\/strong><\/p>\n\n\n\n<p><code>Matcher<\/code>\u7c7b\u5b9e\u73b0 <code>MatchResult<\/code> \u63a5\u53e3\uff0c\u5b83\u662f\u4e00\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\u5f15\u64ce\uff0c\u7528\u4e8e\u5bf9\u5b57\u7b26\u5e8f\u5217\u6267\u884c\u5339\u914d\u64cd\u4f5c\u3002\u4e3b\u8981\u5305\u542b\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul>\n<li>boolean matches()\uff1a\u6d4b\u8bd5\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u5426\u4e0e\u6a21\u5f0f\u5339\u914d\u3002<\/li>\n\n\n\n<li>boolean find()\uff1a\u627e\u5230\u4e0e\u6a21\u5f0f\u5339\u914d\u7684\u4e0b\u4e00\u4e2a\u8868\u8fbe\u5f0f\u3002<\/li>\n\n\n\n<li>boolean find(int start)\uff1a\u627e\u5230\u4e0e\u7ed9\u5b9a\u8d77\u59cb\u7f16\u53f7\u4e2d\u7684\u6a21\u5f0f\u5339\u914d\u7684\u4e0b\u4e00\u4e2a\u8868\u8fbe\u5f0f\u3002<\/li>\n\n\n\n<li>String group()\uff1a\u8fd4\u56de\u5339\u914d\u7684\u5b50\u5e8f\u5217\u3002<\/li>\n\n\n\n<li>int start()\uff1a\u8fd4\u56de\u5339\u914d\u5b50\u5e8f\u5217\u7684\u8d77\u59cb\u7d22\u5f15\u3002<\/li>\n\n\n\n<li>int end()\uff1a\u8fd4\u56de\u5339\u914d\u5b50\u5e8f\u5217\u7684\u7ed3\u675f\u7d22\u5f15\u3002<\/li>\n\n\n\n<li>int groupCount()\uff1a\u8fd4\u56de\u5339\u914d\u5b50\u5e8f\u5217\u7684\u603b\u6570\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>Pattern<\/strong><\/p>\n\n\n\n<p><code>Pattern<\/code>\u7c7b\u662f\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u7f16\u8bd1\u7248\u672c\uff0c\u7528\u4e8e\u5b9a\u4e49\u6b63\u5219\u8868\u8fbe\u5f0f\u5f15\u64ce\u7684\u6a21\u5f0f\u3002\u4e3b\u8981\u5305\u542b\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul>\n<li>static Pattern compile(String regex)\uff1a\u7f16\u8bd1\u7ed9\u5b9a\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u5e76\u8fd4\u56de Pattern \u7684\u5b9e\u4f8b\u3002<\/li>\n\n\n\n<li>Matcher matcher(CharSequence input)\uff1a\u521b\u5efa\u4e00\u4e2a\u5339\u914d\u5668\uff0c\u8be5\u5339\u914d\u5668\u5c06\u7ed9\u5b9a\u7684\u8f93\u5165\u4e0e\u6a21\u5f0f\u5339\u914d\u3002<\/li>\n\n\n\n<li>static boolean matches(String regex, CharSequence input)\uff1a\u5b83\u4f5c\u4e3a\u7f16\u8bd1\u548c\u5339\u914d\u5668\u65b9\u6cd5\u7684\u7ec4\u5408\u5de5\u4f5c\u3002\u5b83\u7f16\u8bd1\u6b63\u5219\u8868\u8fbe\u5f0f\u5e76\u5c06\u7ed9\u5b9a\u7684\u8f93\u5165\u4e0e\u6a21\u5f0f\u5339\u914d\u3002<\/li>\n\n\n\n<li>String[] split(CharSequence input)\uff1a\u56f4\u7ed5\u7ed9\u5b9a\u6a21\u5f0f\u7684\u5339\u914d\u9879\u62c6\u5206\u7ed9\u5b9a\u7684\u8f93\u5165\u5b57\u7b26\u4e32\u3002<\/li>\n\n\n\n<li>String pattern()\uff1a\u8fd4\u56de\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>PatternSyntaxException<\/strong><\/p>\n\n\n\n<p><code>PatternSyntaxException<\/code> \u7c7b\u662f\u629b\u51fa\u672a\u7ecf\u68c0\u67e5\u7684\u5f02\u5e38\uff0c\u6307\u793a\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u4e2d\u7684\u8bed\u6cd5\u9519\u8bef\u3002\u4e3b\u8981\u5305\u542b\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul>\n<li>int getIndex()\uff1a\u68c0\u7d22\u5f02\u5e38\u7684\u7d22\u5f15<\/li>\n\n\n\n<li>String getDescription()\uff1a\u68c0\u7d22\u5f02\u5e38\u7684\u63cf\u8ff0\u4fe1\u606f<\/li>\n\n\n\n<li>String getPattern()\uff1a\u68c0\u7d22\u9519\u8bef\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f<\/li>\n<\/ul>\n\n\n\n<p><strong>MatchResult<\/strong><\/p>\n\n\n\n<p><code>MatchResult<\/code>\u63a5\u53e3\u4e3b\u8981\u7528\u4e8e\u5339\u914d\u64cd\u4f5c\u7684\u7ed3\u679c\u3002\u6b64\u63a5\u53e3\u5305\u542b\u7528\u4e8e\u786e\u5b9a\u4e0e\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u7684\u7ed3\u679c\u7684\u67e5\u8be2\u65b9\u6cd5\u3002\u5339\u914d\u8fb9\u754c\u3001\u7ec4\u548c\u7ec4\u8fb9\u754c\u53ef\u4ee5\u901a\u8fc7\u3002\u4e3b\u8981\u5305\u542b\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul>\n<li>int start()\uff1a\u8fd4\u56de\u5339\u914d\u7684\u5f00\u59cb\u7d22\u5f15<\/li>\n\n\n\n<li>int start(int group)\uff1a\u8fd4\u56de\u672c\u6b21\u5339\u914d\u671f\u95f4\u7ed9\u5b9a\u7ec4\u6355\u83b7\u7684\u5b50\u5e8f\u5217\u7684\u8d77\u59cb\u7d22\u5f15\u3002<\/li>\n\n\n\n<li>int end()\uff1a\u8fd4\u56de\u6700\u540e\u4e00\u4e2a\u5339\u914d\u5b57\u7b26\u540e\u7684\u504f\u79fb\u91cf\u3002<\/li>\n\n\n\n<li>int end(int group)\uff1a\u8fd4\u56de\u672c\u6b21\u5339\u914d\u671f\u95f4\u7ed9\u5b9a\u7ec4\u6355\u83b7\u7684\u5b50\u5e8f\u5217\u7684\u6700\u540e\u4e00\u4e2a\u5b57\u7b26\u540e\u7684\u504f\u79fb\u91cf\u3002<\/li>\n\n\n\n<li>String group()\uff1a\u8fd4\u56de\u4e0e\u4e0a\u4e00\u4e2a\u5339\u914d\u9879\u5339\u914d\u7684\u8f93\u5165\u5b50\u5e8f\u5217\u3002<\/li>\n\n\n\n<li>String group(int group)\uff1a\u8fd4\u56de\u4e0a\u4e00\u6b21\u5339\u914d\u64cd\u4f5c\u671f\u95f4\u7ed9\u5b9a\u7ec4\u6355\u83b7\u7684\u8f93\u5165\u5b50\u5e8f\u5217\u3002<\/li>\n\n\n\n<li>int groupCount()\uff1a\u8fd4\u56de\u6b64\u5339\u914d\u7ed3\u679c\u6a21\u5f0f\u4e2d\u7684\u6355\u83b7\u7ec4\u7684\u6570\u91cf\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u6b63\u5219\u4f7f\u7528\u573a\u666f<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u6b63\u5219\u4f7f\u7528\u573a\u666f\u4e3b\u8981\u5305\u542b\u4ee5\u4e0b\u7c7b\u578b\uff1a<\/p>\n\n\n\n<ul>\n<li>\u8f93\u5165\u9a8c\u8bc1\uff0c\u6bd4\u5982\u90ae\u7bb1\u9a8c\u8bc1\uff0c\u624b\u673a\u53f7\u9a8c\u8bc1\uff0cURL \u9a8c\u8bc1\uff0c\u5bc6\u7801\u5f3a\u5ea6\u9a8c\u8bc1<\/li>\n\n\n\n<li>\u6587\u672c\u641c\u7d22\u548c\u66ff\u6362\uff0c\u6bd4\u5982\u67e5\u627e\u7279\u5b9a\u6a21\u5f0f\uff0c\u66ff\u6362\u7279\u5b9a\u6a21\u5f0f<\/li>\n\n\n\n<li>\u6587\u672c\u62c6\u5206\uff0c\u6bd4\u5982\u6309\u7167\u7a7a\u767d\u5b57\u7b26\u62c6\u5206\u5b57\u7b26\u4e32<\/li>\n\n\n\n<li>\u65e5\u5fd7\u548c\u6570\u636e\u89e3\u6790\uff0c\u6bd4\u5982\u63d0\u53d6IP\u5730\u5740\uff0c\u63d0\u53d6\u65e5\u671f\u548c\u65f6\u95f4<\/li>\n\n\n\n<li>\u6570\u636e\u6e05\u6d17\uff0c\u6bd4\u5982\u5220\u9664HTML\u6807\u7b7e\uff0c\u683c\u5f0f\u5316\u5b57\u7b26\u4e32<\/li>\n\n\n\n<li>\u7f16\u8bd1\u5668\u548c\u89e3\u91ca\u5668\uff0c\u6bd4\u5982\u8bc6\u522b\u6807\u8bc6\u7b26\u3001\u5173\u952e\u5b57\u3001\u64cd\u4f5c\u7b26\u7b49<\/li>\n\n\n\n<li>\u6570\u636e\u5e93\u67e5\u8be2\uff0c\u6bd4\u5982\u4f7f\u7528 SQL \u7684 REGEXP \u8fd0\u7b97\u7b26\u8fdb\u884c\u590d\u6742\u7684\u6a21\u5f0f\u5339\u914d\u67e5\u8be2\u3002<\/li>\n\n\n\n<li>\u6587\u4ef6\u540d\u5339\u914d\uff0c\u6bd4\u5982\u67e5\u627e\u6240\u6709\u4ee5 .txt \u7ed3\u5c3e\u7684\u6587\u4ef6<\/li>\n<\/ul>\n\n\n\n<p>\u9664\u4e86\u4e0a\u9762\u7684\u573a\u666f\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f\u8fd8\u53ef\u4ee5\u4f7f\u7528\u5230\u5176\u4ed6\u7684\u573a\u666f\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u573a\u666f\u800c\u5b9a\u3002<\/p>\n\n\n\n<p><strong>\u793a\u4f8b\u6f14\u793a<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>\u90ae\u7bb1\u9a8c\u8bc1<\/strong><\/p>\n\n\n\n<p>\u9a8c\u8bc1\u90ae\u7bb1\u5730\u5740\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u5e94\u7528\u573a\u666f\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u80fd\u591f\u9a8c\u8bc1\u90ae\u7bb1\u5730\u5740\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u3002\u4e00\u4e2a\u5e38\u89c1\u7684\u7528\u4e8e\u9a8c\u8bc1\u90ae\u7bb1\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}$<\/pre>\n\n\n\n<p>\u8be5\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u89e3\u91ca\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul>\n<li><code>^<\/code>\uff1a\u5339\u914d\u5b57\u7b26\u4e32\u7684\u5f00\u59cb\u3002<\/li>\n\n\n\n<li><code>[a-zA-Z0-9._%+-]+<\/code>\uff1a\u5339\u914d\u4e00\u4e2a\u6216\u591a\u4e2a\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u70b9\u3001\u4e0b\u5212\u7ebf\u3001\u767e\u5206\u53f7\u3001\u52a0\u53f7\u6216\u51cf\u53f7\u3002<\/li>\n\n\n\n<li><code>@<\/code>\uff1a\u5339\u914d@\u7b26\u53f7\u3002<\/li>\n\n\n\n<li><code>[a-zA-Z0-9.-]<\/code>+\uff1a\u5339\u914d\u4e00\u4e2a\u6216\u591a\u4e2a\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u70b9\u6216\u51cf\u53f7\u3002<\/li>\n\n\n\n<li><code>\\.<\/code>\uff1a\u5339\u914d\u4e00\u4e2a\u70b9\u3002<\/li>\n\n\n\n<li><code>[a-zA-Z]{2,}<\/code>\uff1a\u5339\u914d\u4e24\u4e2a\u6216\u66f4\u591a\u7684\u5b57\u6bcd\u3002<\/li>\n\n\n\n<li><code>$<\/code>\uff1a\u5339\u914d\u5b57\u7b26\u4e32\u7684\u7ed3\u675f\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u5b8c\u6574\u7684 Java\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import java.util.regex.*;\npublic class EmailValidator {\n    public static void main(String[] args) {\n        String emailPattern = \"^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\\\.[a-zA-Z]{2,}$\";\n        String[] emails = {\n            \"valid.email@example.com\",\n            \"invalid-email@example\",\n            \"another.valid.email@example.co.uk\",\n            \"invalid.email@.com\",\n            \"valid_email123@example.org\"\n        };\n        \n        Pattern pattern = Pattern.compile(emailPattern);\n        for (String email : emails) {\n            Matcher matcher = pattern.matcher(email);\n            boolean isMatch = matcher.matches();\n            System.out.println(\"Email: \" + email + \" is valid? \" + isMatch);\n        }\n    }\n}<\/pre>\n\n\n\n<p>\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">Email: valid.email@example.com is valid? true\nEmail: invalid-email@example is valid? false\nEmail: another.valid.email@example.co.uk is valid? true\nEmail: invalid.email@.com is valid? false\nEmail: valid_email123@example.org is valid? true<\/pre>\n\n\n\n<p>\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff1a<\/p>\n\n\n\n<ul>\n<li>Pattern.compile(emailPattern)\uff1a\u7f16\u8bd1\u6b63\u5219\u8868\u8fbe\u5f0f\u3002<\/li>\n\n\n\n<li>pattern.matcher(email)\uff1a\u521b\u5efa\u4e00\u4e2a\u5339\u914d\u5668\u5bf9\u8c61\uff0c\u7528\u4e8e\u5339\u914d\u7ed9\u5b9a\u7684\u90ae\u7bb1\u5b57\u7b26\u4e32\u3002<\/li>\n\n\n\n<li>matcher.matches()\uff1a\u68c0\u67e5\u6574\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u4e0e\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u62c6\u5206\u5b57\u7b26\u4e32<\/strong><\/p>\n\n\n\n<p>\u5728\u4e0b\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f<code>\\s+<\/code>\u8868\u793a\u4e00\u4e2a\u6216\u591a\u4e2a\u7a7a\u767d\u5b57\u7b26\u3002split\u65b9\u6cd5\u7528\u4e8e\u5c06\u5b57\u7b26\u4e32\u6309\u5339\u914d\u7684\u6a21\u5f0f\u62c6\u5206\u4e3a\u591a\u4e2a\u90e8\u5206\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import java.util.regex.*;\n\npublic class RegexExample {\n    public static void main(String[] args) {\n        String pattern = \"\\\\s+\";\n        String text = \"Split this string by spaces.\";\n        \n        Pattern compiledPattern = Pattern.compile(pattern);\n        String[] parts = compiledPattern.split(text);\n        \n        for (String part : parts) {\n            System.out.println(part);\n        }\n    }\n}\n\n<\/pre>\n\n\n\n<p><strong>\u67e5\u627e\u5b50\u5b57\u7b26\u4e32<\/strong><\/p>\n\n\n\n<p>\u5728\u4e0b\u9762\u793a\u4f8b\u4e2d\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f<code>\\d+<\/code>\u8868\u793a\u4e00\u4e2a\u6216\u591a\u4e2a\u6570\u5b57\u5b57\u7b26\u3002find\u65b9\u6cd5\u7528\u4e8e\u67e5\u627e\u6240\u6709\u5339\u914d\u7684\u5b50\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import java.util.regex.*;\n\npublic class RegexExample {\n    public static void main(String[] args) {\n        String pattern = \"\\\\d+\";\n        String text = \"There are 123 apples and 456 oranges.\";\n        \n        Pattern compiledPattern = Pattern.compile(pattern);\n        Matcher matcher = compiledPattern.matcher(text);\n        \n        while (matcher.find()) {\n            System.out.println(\"Found a number: \" + matcher.group());\n        }\n    }\n}<\/pre>\n\n\n\n<p><strong>\u603b\u7ed3<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u4e00\u79cd\u529f\u80fd\u5f3a\u5927\u4e14\u7075\u6d3b\u7684\u5de5\u5177\uff0c\u80fd\u591f\u6781\u5927\u5730\u63d0\u9ad8\u5b57\u7b26\u4e32\u5904\u7406\u7684\u6548\u7387\u548c\u7cbe\u5ea6\u3002\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u6280\u672f\u96be\u5ea6\u4e0d\u5927\uff0c\u4f46\u662f\u5f88\u96be\u8bb0\u5fc6\uff0c\u800c\u4e14\u5728\u8f93\u5165\u9a8c\u8bc1\u3001\u6587\u672c\u641c\u7d22\u548c\u66ff\u6362\u3001\u6587\u672c\u62c6\u5206\u3001\u65e5\u5fd7\u548c\u6570\u636e\u89e3\u6790\u3001\u6570\u636e\u6e05\u6d17\u3001\u7f16\u8bd1\u5668\u548c\u89e3\u91ca\u5668\u7b49\u5e94\u7528\u573a\u666f\u4f7f\u7528\u6bd4\u8f83\u591a\u3002\u6240\u4ee5\uff0c\u638c\u63e1\u6b63\u5219\u8868\u8fbe\u5f0f\u8fd8\u662f\u6709\u5f88\u5927\u5e2e\u52a9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8f6c\u8f7d\uff1a\u4e00\u6587\u8bb2\u900f Java Regex\u6b63\u5219\u8868\u8fbe\u5f0f\uff01 \u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u4e00\u79cd\u7528\u4e8e\u63cf\u8ff0\u5b57\u7b26\u4e32\u6a21\u5f0f\u7684\u5de5\u5177\uff0c\u5b83\u5728\u6587\u672c\u5904\u7406\u3001\u6570\u636e [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/16139"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=16139"}],"version-history":[{"count":1,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/16139\/revisions"}],"predecessor-version":[{"id":16141,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/16139\/revisions\/16141"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=16139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}