{"id":651,"date":"2009-09-24T19:07:00","date_gmt":"2009-09-24T11:07:00","guid":{"rendered":""},"modified":"2013-11-24T20:49:39","modified_gmt":"2013-11-24T12:49:39","slug":"%e6%ad%a3%e5%88%99%e8%a1%a8%e8%be%be%e5%bc%8f%e5%8d%b3%e5%ad%a6%e5%8d%b3%e7%94%a8%e4%ba%8c","status":"publish","type":"post","link":"https:\/\/kyle.ai\/blog\/651.html","title":{"rendered":"\u6b63\u5219\u8868\u8fbe\u5f0f\u5373\u5b66\u5373\u7528(\u4e8c)"},"content":{"rendered":"

2.2 \u53cd\u5411\u5f15\u7528 \\1, \\2…<\/p>\n

\u8868\u8fbe\u5f0f\u5728\u5339\u914d\u65f6\uff0c\u8868\u8fbe\u5f0f\u5f15\u64ce\u4f1a\u5c06\u5c0f\u62ec\u53f7 “( )” \u5305\u542b\u7684\u8868\u8fbe\u5f0f\u6240\u5339\u914d\u5230\u7684\u5b57\u7b26\u4e32\u8bb0\u5f55\u4e0b\u6765\u3002\u5728\u83b7
\n\u53d6\u5339\u914d\u7ed3\u679c\u7684\u65f6\u5019\uff0c\u5c0f\u62ec\u53f7\u5305\u542b\u7684\u8868\u8fbe\u5f0f\u6240\u5339\u914d\u5230\u7684\u5b57\u7b26\u4e32\u53ef\u4ee5\u5355\u72ec\u83b7\u53d6\u3002\u8fd9\u4e00\u70b9\uff0c\u5728\u524d\u9762\u7684\u4e3e\u4f8b\u4e2d
\n\uff0c\u5df2\u7ecf\u591a\u6b21\u5c55\u793a\u4e86\u3002\u5728\u5b9e\u9645\u5e94\u7528\u573a\u5408\u4e2d\uff0c\u5f53\u7528\u67d0\u79cd\u8fb9\u754c\u6765\u67e5\u627e\uff0c\u800c\u6240\u8981\u83b7\u53d6\u7684\u5185\u5bb9\u53c8\u4e0d\u5305\u542b\u8fb9\u754c\u65f6\uff0c
\n\u5fc5\u987b\u4f7f\u7528\u5c0f\u62ec\u53f7\u6765\u6307\u5b9a\u6240\u8981\u7684\u8303\u56f4\u3002\u6bd4\u5982\u524d\u9762\u7684 “<td>(.*?)<\/td>”\u3002<\/p>\n

\u5176\u5b9e\uff0c”\u5c0f\u62ec\u53f7\u5305\u542b\u7684\u8868\u8fbe\u5f0f\u6240\u5339\u914d\u5230\u7684\u5b57\u7b26\u4e32” \u4e0d\u4ec5\u662f\u5728\u5339\u914d\u7ed3\u675f\u540e\u624d\u53ef\u4ee5\u4f7f\u7528\uff0c\u5728\u5339\u914d\u8fc7\u7a0b\u4e2d
\n\u4e5f\u53ef\u4ee5\u4f7f\u7528\u3002\u8868\u8fbe\u5f0f\u540e\u8fb9\u7684\u90e8\u5206\uff0c\u53ef\u4ee5\u5f15\u7528\u524d\u9762 “\u62ec\u53f7\u5185\u7684\u5b50\u5339\u914d\u5df2\u7ecf\u5339\u914d\u5230\u7684\u5b57\u7b26\u4e32”\u3002\u5f15\u7528\u65b9\u6cd5\u662f
\n“\\” \u52a0\u4e0a\u4e00\u4e2a\u6570\u5b57\u3002”\\1″ \u5f15\u7528\u7b2c1\u5bf9\u62ec\u53f7\u5185\u5339\u914d\u5230\u7684\u5b57\u7b26\u4e32\uff0c”\\2″ \u5f15\u7528\u7b2c2\u5bf9\u62ec\u53f7\u5185\u5339\u914d\u5230\u7684\u5b57\u7b26\u4e32
\n\u2026\u2026\u4ee5\u6b64\u7c7b\u63a8\uff0c\u5982\u679c\u4e00\u5bf9\u62ec\u53f7\u5185\u5305\u542b\u53e6\u4e00\u5bf9\u62ec\u53f7\uff0c\u5219\u5916\u5c42\u7684\u62ec\u53f7\u5148\u6392\u5e8f\u53f7\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u54ea\u4e00\u5bf9\u7684\u5de6\u62ec
\n\u53f7 “(” \u5728\u524d\uff0c\u90a3\u8fd9\u4e00\u5bf9\u5c31\u5148\u6392\u5e8f\u53f7\u3002<\/p>\n

\u4e3e\u4f8b\u5982\u4e0b\uff1a<\/p>\n

\u4e3e\u4f8b1\uff1a\u8868\u8fbe\u5f0f “(‘|”)(.*?)(\\1)” \u5728\u5339\u914d ” ‘Hello’, “World” ” \u65f6\uff0c\u5339\u914d\u7ed3\u679c\u662f\uff1a\u6210\u529f\uff1b\u5339\u914d
\n\u5230\u7684\u5185\u5bb9\u662f\uff1a” ‘Hello’ “\u3002\u518d\u6b21\u5339\u914d\u4e0b\u4e00\u4e2a\u65f6\uff0c\u53ef\u4ee5\u5339\u914d\u5230 ” “World” “\u3002<\/p>\n

\u4e3e\u4f8b2\uff1a\u8868\u8fbe\u5f0f “(\\w)\\1{4,}” \u5728\u5339\u914d “aa bbbb abcdefg ccccc 111121111 999999999” \u65f6\uff0c\u5339
\n\u914d\u7ed3\u679c\u662f\uff1a\u6210\u529f\uff1b\u5339\u914d\u5230\u7684\u5185\u5bb9\u662f “ccccc”\u3002\u518d\u6b21\u5339\u914d\u4e0b\u4e00\u4e2a\u65f6\uff0c\u5c06\u5f97\u5230 999999999\u3002\u8fd9\u4e2a\u8868\u8fbe\u5f0f\u8981
\n\u6c42 “\\w” \u8303\u56f4\u7684\u5b57\u7b26\u81f3\u5c11\u91cd\u590d5\u6b21\uff0c\u6ce8\u610f\u4e0e “\\w{5,}” \u4e4b\u95f4\u7684\u533a\u522b\u3002<\/p>\n

\u4e3e\u4f8b3\uff1a\u8868\u8fbe\u5f0f “<(\\w+)\\s*(\\w+(=(‘|”).*?\\4)?\\s*)*>.*?<\/\\1>” \u5728\u5339\u914d “<td id=’td1’
\nstyle=”bgcolor:white”><\/td>” \u65f6\uff0c\u5339\u914d\u7ed3\u679c\u662f\u6210\u529f\u3002\u5982\u679c “<td>” \u4e0e “<\/td>” \u4e0d\u914d\u5bf9\uff0c\u5219\u4f1a\u5339\u914d
\n\u5931\u8d25\uff1b\u5982\u679c\u6539\u6210\u5176\u4ed6\u914d\u5bf9\uff0c\u4e5f\u53ef\u4ee5\u5339\u914d\u6210\u529f\u3002<\/p>\n

2.3 \u9884\u641c\u7d22\uff0c\u4e0d\u5339\u914d\uff1b\u53cd\u5411\u9884\u641c\u7d22\uff0c\u4e0d\u5339\u914d
\n\u524d\u9762\u7684\u7ae0\u8282\u4e2d\uff0c\u6211\u8bb2\u5230\u4e86\u51e0\u4e2a\u4ee3\u8868\u62bd\u8c61\u610f\u4e49\u7684\u7279\u6b8a\u7b26\u53f7\uff1a”^”\uff0c”$”\uff0c”\\b”\u3002\u5b83\u4eec\u90fd\u6709\u4e00\u4e2a\u5171\u540c\u70b9
\n\uff0c\u90a3\u5c31\u662f\uff1a\u5b83\u4eec\u672c\u8eab\u4e0d\u5339\u914d\u4efb\u4f55\u5b57\u7b26\uff0c\u53ea\u662f\u5bf9 “\u5b57\u7b26\u4e32\u7684\u4e24\u5934” \u6216\u8005 “\u5b57\u7b26\u4e4b\u95f4\u7684\u7f1d\u9699” \u9644\u52a0\u4e86\u4e00\u4e2a
\n\u6761\u4ef6\u3002\u7406\u89e3\u5230\u8fd9\u4e2a\u6982\u5ff5\u4ee5\u540e\uff0c\u672c\u8282\u5c06\u7ee7\u7eed\u4ecb\u7ecd\u53e6\u5916\u4e00\u79cd\u5bf9 “\u4e24\u5934” \u6216\u8005 “\u7f1d\u9699” \u9644\u52a0\u6761\u4ef6\u7684\uff0c\u66f4\u52a0\u7075
\n\u6d3b\u7684\u8868\u793a\u65b9\u6cd5\u3002<\/p>\n

\u6b63\u5411\u9884\u641c\u7d22\uff1a”(?=xxxxx)”\uff0c”(?!xxxxx)”<\/p>\n

\u683c\u5f0f\uff1a”(?=xxxxx)”\uff0c\u5728\u88ab\u5339\u914d\u7684\u5b57\u7b26\u4e32\u4e2d\uff0c\u5b83\u5bf9\u6240\u5904\u7684 “\u7f1d\u9699” \u6216\u8005 “\u4e24\u5934” \u9644\u52a0\u7684\u6761\u4ef6\u662f\uff1a\u6240
\n\u5728\u7f1d\u9699\u7684\u53f3\u4fa7\uff0c\u5fc5\u987b\u80fd\u591f\u5339\u914d\u4e0a xxxxx \u8fd9\u90e8\u5206\u7684\u8868\u8fbe\u5f0f\u3002\u56e0\u4e3a\u5b83\u53ea\u662f\u5728\u6b64\u4f5c\u4e3a\u8fd9\u4e2a\u7f1d\u9699\u4e0a\u9644\u52a0\u7684\u6761\u4ef6
\n\uff0c\u6240\u4ee5\u5b83\u5e76\u4e0d\u5f71\u54cd\u540e\u8fb9\u7684\u8868\u8fbe\u5f0f\u53bb\u771f\u6b63\u5339\u914d\u8fd9\u4e2a\u7f1d\u9699\u4e4b\u540e\u7684\u5b57\u7b26\u3002\u8fd9\u5c31\u7c7b\u4f3c “\\b”\uff0c\u672c\u8eab\u4e0d\u5339\u914d\u4efb\u4f55\u5b57
\n\u7b26\u3002”\\b” \u53ea\u662f\u5c06\u6240\u5728\u7f1d\u9699\u4e4b\u524d\u3001\u4e4b\u540e\u7684\u5b57\u7b26\u53d6\u6765\u8fdb\u884c\u4e86\u4e00\u4e0b\u5224\u65ad\uff0c\u4e0d\u4f1a\u5f71\u54cd\u540e\u8fb9\u7684\u8868\u8fbe\u5f0f\u6765\u771f\u6b63\u7684\u5339
\n\u914d\u3002<\/p>\n

\u4e3e\u4f8b1\uff1a\u8868\u8fbe\u5f0f “Windows (?=NT|XP)” \u5728\u5339\u914d “Windows 98, Windows NT, Windows 2000” \u65f6\uff0c
\n\u5c06\u53ea\u5339\u914d “Windows NT” \u4e2d\u7684 “Windows “\uff0c\u5176\u4ed6\u7684 “Windows ” \u5b57\u6837\u5219\u4e0d\u88ab\u5339\u914d\u3002<\/p>\n

\u4e3e\u4f8b2\uff1a\u8868\u8fbe\u5f0f “(\\w)((?=\\1\\1\\1)(\\1))+” \u5728\u5339\u914d\u5b57\u7b26\u4e32 “aaa ffffff 999999999” \u65f6\uff0c\u5c06\u53ef\u4ee5
\n\u5339\u914d6\u4e2a”f”\u7684\u524d4\u4e2a\uff0c\u53ef\u4ee5\u5339\u914d9\u4e2a”9″\u7684\u524d7\u4e2a\u3002\u8fd9\u4e2a\u8868\u8fbe\u5f0f\u53ef\u4ee5\u8bfb\u89e3\u6210\uff1a\u91cd\u590d4\u6b21\u4ee5\u4e0a\u7684\u5b57\u6bcd\u6570\u5b57\uff0c\u5219
\n\u5339\u914d\u5176\u5269\u4e0b\u6700\u540e2\u4f4d\u4e4b\u524d\u7684\u90e8\u5206\u3002\u5f53\u7136\uff0c\u8fd9\u4e2a\u8868\u8fbe\u5f0f\u53ef\u4ee5\u4e0d\u8fd9\u6837\u5199\uff0c\u5728\u6b64\u7684\u76ee\u7684\u662f\u4f5c\u4e3a\u6f14\u793a\u4e4b\u7528\u3002<\/p>\n

\u683c\u5f0f\uff1a”(?!xxxxx)”\uff0c\u6240\u5728\u7f1d\u9699\u7684\u53f3\u4fa7\uff0c\u5fc5\u987b\u4e0d\u80fd\u5339\u914d xxxxx \u8fd9\u90e8\u5206\u8868\u8fbe\u5f0f\u3002<\/p>\n

\u4e3e\u4f8b3\uff1a\u8868\u8fbe\u5f0f “((?!\\bstop\\b).)+” \u5728\u5339\u914d “fdjka ljfdl stop fjdsla fdj” \u65f6\uff0c\u5c06\u4ece\u5934\u4e00\u76f4
\n\u5339\u914d\u5230 “stop” \u4e4b\u524d\u7684\u4f4d\u7f6e\uff0c\u5982\u679c\u5b57\u7b26\u4e32\u4e2d\u6ca1\u6709 “stop”\uff0c\u5219\u5339\u914d\u6574\u4e2a\u5b57\u7b26\u4e32\u3002<\/p>\n

\u4e3e\u4f8b4\uff1a\u8868\u8fbe\u5f0f “do(?!\\w)” \u5728\u5339\u914d\u5b57\u7b26\u4e32 “done, do, dog” \u65f6\uff0c\u53ea\u80fd\u5339\u914d “do”\u3002\u5728\u672c\u6761\u4e3e\u4f8b\u4e2d
\n\uff0c”do” \u540e\u8fb9\u4f7f\u7528 “(?!\\w)” \u548c\u4f7f\u7528 “\\b” \u6548\u679c\u662f\u4e00\u6837\u7684\u3002<\/p>\n

\u53cd\u5411\u9884\u641c\u7d22\uff1a”(?<=xxxxx)”\uff0c”(?<!xxxxx)”<\/p>\n

\u8fd9\u4e24\u79cd\u683c\u5f0f\u7684\u6982\u5ff5\u548c\u6b63\u5411\u9884\u641c\u7d22\u662f\u7c7b\u4f3c\u7684\uff0c\u53cd\u5411\u9884\u641c\u7d22\u8981\u6c42\u7684\u6761\u4ef6\u662f\uff1a\u6240\u5728\u7f1d\u9699\u7684 “\u5de6\u4fa7”\uff0c\u4e24\u79cd
\n\u683c\u5f0f\u5206\u522b\u8981\u6c42\u5fc5\u987b\u80fd\u591f\u5339\u914d\u548c\u5fc5\u987b\u4e0d\u80fd\u591f\u5339\u914d\u6307\u5b9a\u8868\u8fbe\u5f0f\uff0c\u800c\u4e0d\u662f\u53bb\u5224\u65ad\u53f3\u4fa7\u3002\u4e0e “\u6b63\u5411\u9884\u641c\u7d22” \u4e00
\n\u6837\u7684\u662f\uff1a\u5b83\u4eec\u90fd\u662f\u5bf9\u6240\u5728\u7f1d\u9699\u7684\u4e00\u79cd\u9644\u52a0\u6761\u4ef6\uff0c\u672c\u8eab\u90fd\u4e0d\u5339\u914d\u4efb\u4f55\u5b57\u7b26\u3002<\/p>\n

\u4e3e\u4f8b5\uff1a\u8868\u8fbe\u5f0f “(?<=\\d{4})\\d+(?=\\d{4})” \u5728\u5339\u914d “1234567890123456” \u65f6\uff0c\u5c06\u5339\u914d\u9664\u4e86\u524d4\u4e2a
\n\u6570\u5b57\u548c\u540e4\u4e2a\u6570\u5b57\u4e4b\u5916\u7684\u4e2d\u95f48\u4e2a\u6570\u5b57\u3002\u7531\u4e8e JScript.RegExp \u4e0d\u652f\u6301\u53cd\u5411\u9884\u641c\u7d22\uff0c\u56e0\u6b64\uff0c\u672c\u6761\u4e3e\u4f8b\u4e0d
\n\u80fd\u591f\u8fdb\u884c\u6f14\u793a\u3002\u5f88\u591a\u5176\u4ed6\u7684\u5f15\u64ce\u53ef\u4ee5\u652f\u6301\u53cd\u5411\u9884\u641c\u7d22\uff0c\u6bd4\u5982\uff1aJava 1.4 \u4ee5\u4e0a\u7684 java.util.regex \u5305
\n\uff0c.NET \u4e2dSystem.Text.RegularExpressions \u547d\u540d\u7a7a\u95f4\uff0c\u4ee5\u53ca\u672c\u7ad9\u63a8\u8350\u7684\u6700\u7b80\u5355\u6613\u7528\u7684 DEELX \u6b63\u5219\u5f15
\n\u64ce\u3002<\/p>\n

3. \u5176\u4ed6\u901a\u7528\u89c4\u5219
\n\u8fd8\u6709\u4e00\u4e9b\u5728\u5404\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\u5f15\u64ce\u4e4b\u95f4\u6bd4\u8f83\u901a\u7528\u7684\u89c4\u5219\uff0c\u5728\u524d\u9762\u7684\u8bb2\u89e3\u8fc7\u7a0b\u4e2d\u6ca1\u6709\u63d0\u5230\u3002<\/p>\n

3.1 \u8868\u8fbe\u5f0f\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 “\\xXX” \u548c “\\uXXXX” \u8868\u793a\u4e00\u4e2a\u5b57\u7b26\uff08”X” \u8868\u793a\u4e00\u4e2a\u5341\u516d\u8fdb\u5236\u6570\uff09<\/p>\n

\u250f\u2501\u2501\u2501\u2501\u2501\u252f\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2513
\n\u2503\u5f62\u5f0f\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u5b57\u7b26\u8303\u56f4\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503\\xXX\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u7f16\u53f7\u5728 0 ~ 255 \u8303\u56f4\u7684\u5b57\u7b26\uff0c\u6bd4\u5982\uff1a\u7a7a\u683c\u53ef\u4ee5\u4f7f\u7528 “\\ \u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502x20” \u8868\u793a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503\\uXXXX\u00a0\u00a0\u00a0 \u2502\u4efb\u4f55\u5b57\u7b26\u53ef\u4ee5\u4f7f\u7528 “\\u” \u518d\u52a0\u4e0a\u5176\u7f16\u53f7\u76844\u4f4d\u5341\u516d\u8fdb\u5236\u6570 \u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u8868\u793a\uff0c\u6bd4\u5982\uff1a”\\u4E2D”\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2517\u2501\u2501\u2501\u2501\u2501\u2537\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u251b<\/p>\n

3.2 \u5728\u8868\u8fbe\u5f0f “\\s”\uff0c”\\d”\uff0c”\\w”\uff0c”\\b” \u8868\u793a\u7279\u6b8a\u610f\u4e49\u7684\u540c\u65f6\uff0c\u5bf9\u5e94\u7684\u5927\u5199\u5b57\u6bcd\u8868\u793a\u76f8\u53cd\u7684\u610f\u4e49<\/p>\n

\u250f\u2501\u2501\u2501\u2501\u2501\u252f\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2513
\n\u2503\u8868\u8fbe\u5f0f\u00a0\u00a0\u00a0 \u2502\u53ef\u5339\u914d\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503\\S\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u5339\u914d\u6240\u6709\u975e\u7a7a\u767d\u5b57\u7b26\uff08”\\s” \u53ef\u5339\u914d\u5404\u4e2a\u7a7a\u767d\u5b57\u7b26\uff09\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503\\D\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u5339\u914d\u6240\u6709\u7684\u975e\u6570\u5b57\u5b57\u7b26\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503\\W\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u5339\u914d\u6240\u6709\u7684\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u4e0b\u5212\u7ebf\u4ee5\u5916\u7684\u5b57\u7b26\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503\\B\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u5339\u914d\u975e\u5355\u8bcd\u8fb9\u754c\uff0c\u5373\u5de6\u53f3\u4e24\u8fb9\u90fd\u662f “\\w” \u8303\u56f4\u6216\u8005\u5de6\u53f3\u4e24\u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u8fb9\u90fd\u4e0d\u662f “\\w”\u8303\u56f4\u65f6\u7684\u5b57\u7b26\u7f1d\u9699\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2517\u2501\u2501\u2501\u2501\u2501\u2537\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u251b<\/p>\n

3.3 \u5728\u8868\u8fbe\u5f0f\u4e2d\u6709\u7279\u6b8a\u610f\u4e49\uff0c\u9700\u8981\u6dfb\u52a0 “\\” \u624d\u80fd\u5339\u914d\u8be5\u5b57\u7b26\u672c\u8eab\u7684\u5b57\u7b26\u6c47\u603b<\/p>\n

\u250f\u2501\u2501\u252f\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2513
\n\u2503\u5b57\u7b26\u2502\u8bf4\u660e\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503^\u00a0\u00a0 \u2502\u5339\u914d\u8f93\u5165\u5b57\u7b26\u4e32\u7684\u5f00\u59cb\u4f4d\u7f6e\u3002\u8981\u5339\u914d “^” \u5b57\u7b26\u672c\u8eab\uff0c\u8bf7\u4f7f\u7528 “\\^” \u2503
\n\u2520\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503$\u00a0\u00a0 \u2502\u5339\u914d\u8f93\u5165\u5b57\u7b26\u4e32\u7684\u7ed3\u5c3e\u4f4d\u7f6e\u3002\u8981\u5339\u914d “$” \u5b57\u7b26\u672c\u8eab\uff0c\u8bf7\u4f7f\u7528 “\\$” \u2503
\n\u2520\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503( ) \u2502\u6807\u8bb0\u4e00\u4e2a\u5b50\u8868\u8fbe\u5f0f\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u4f4d\u7f6e\u3002\u8981\u5339\u914d\u5c0f\u62ec\u53f7\uff0c\u8bf7\u4f7f\u7528 “\\(” \u2503
\n\u2503\u00a0\u00a0\u00a0 \u2502\u548c “\\)”\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503[ ] \u2502\u7528\u6765\u81ea\u5b9a\u4e49\u80fd\u591f\u5339\u914d ‘\u591a\u79cd\u5b57\u7b26’ \u7684\u8868\u8fbe\u5f0f\u3002\u8981\u5339\u914d\u4e2d\u62ec\u53f7\uff0c\u8bf7\u4f7f\u7528\u2503
\n\u2503\u00a0\u00a0\u00a0 \u2502 “\\[“\u548c “\\]”\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503{ } \u2502\u4fee\u9970\u5339\u914d\u6b21\u6570\u7684\u7b26\u53f7\u3002\u8981\u5339\u914d\u5927\u62ec\u53f7\uff0c\u8bf7\u4f7f\u7528 “\\{” \u548c “\\}”\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503.\u00a0\u00a0 \u2502\u5339\u914d\u9664\u4e86\u6362\u884c\u7b26\uff08\\n\uff09\u4ee5\u5916\u7684\u4efb\u610f\u4e00\u4e2a\u5b57\u7b26\u3002\u8981\u5339\u914d\u5c0f\u6570\u70b9\u672c\u8eab\uff0c \u2503
\n\u2503\u00a0\u00a0\u00a0 \u2502\u8bf7\u4f7f\u7528 “\\.”\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503?\u00a0\u00a0 \u2502\u4fee\u9970\u5339\u914d\u6b21\u6570\u4e3a 0 \u6b21\u6216 1 \u6b21\u3002\u8981\u5339\u914d “?” \u5b57\u7b26\u672c\u8eab\uff0c\u8bf7\u4f7f\u7528”\\?” \u2503
\n\u2520\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503+\u00a0\u00a0 \u2502\u4fee\u9970\u5339\u914d\u6b21\u6570\u4e3a\u81f3\u5c11 1 \u6b21\u3002\u8981\u5339\u914d “+” \u5b57\u7b26\u672c\u8eab\uff0c\u8bf7\u4f7f\u7528 “\\+”\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503*\u00a0\u00a0 \u2502\u4fee\u9970\u5339\u914d\u6b21\u6570\u4e3a 0 \u6b21\u6216\u4efb\u610f\u6b21\u3002\u8981\u5339\u914d “*” \u5b57\u7b26\u672c\u8eab\uff0c\u8bf7\u4f7f\u7528”\\*”\u2503
\n\u2520\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503|\u00a0\u00a0 \u2502\u5de6\u53f3\u4e24\u8fb9\u8868\u8fbe\u5f0f\u4e4b\u95f4 “\u6216” \u5173\u7cfb\u3002\u5339\u914d “|” \u672c\u8eab\uff0c\u8bf7\u4f7f\u7528 “\\|”\u00a0\u00a0\u00a0 \u2503
\n\u2517\u2501\u2501\u2537\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u251b<\/p>\n

3.4 \u62ec\u53f7 “( )” \u5185\u7684\u5b50\u8868\u8fbe\u5f0f\uff0c\u5982\u679c\u5e0c\u671b\u5339\u914d\u7ed3\u679c\u4e0d\u8fdb\u884c\u8bb0\u5f55\u4f9b\u4ee5\u540e\u4f7f\u7528\uff0c\u53ef\u4ee5\u4f7f\u7528 “(?:xxxxx)”
\n\u683c\u5f0f<\/p>\n

\u4e3e\u4f8b1\uff1a\u8868\u8fbe\u5f0f “(?:(\\w)\\1)+” \u5339\u914d “a bbccdd efg” \u65f6\uff0c\u7ed3\u679c\u662f “bbccdd”\u3002\u62ec\u53f7 “(?:)” \u8303\u56f4
\n\u7684\u5339\u914d\u7ed3\u679c\u4e0d\u8fdb\u884c\u8bb0\u5f55\uff0c\u56e0\u6b64 “(\\w)” \u4f7f\u7528 “\\1” \u6765\u5f15\u7528\u3002<\/p>\n

3.5 \u5e38\u7528\u7684\u8868\u8fbe\u5f0f\u5c5e\u6027\u8bbe\u7f6e\u7b80\u4ecb\uff1aIgnorecase\uff0cSingleline\uff0cMultiline\uff0cGlobal<\/p>\n

\u250f\u2501\u2501\u2501\u2501\u2501\u252f\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2513
\n\u2503\u8868\u8fbe\u5f0f\u5c5e\u6027\u2502\u8bf4\u660e\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503Ignorecase\u2502\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u8868\u8fbe\u5f0f\u4e2d\u7684\u5b57\u6bcd\u662f\u8981\u533a\u5206\u5927\u5c0f\u5199\u7684\u3002\u914d\u7f6e\u4e3a\u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502Ignorecase\u53ef\u4f7f\u5339\u914d\u65f6\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u3002\u6709\u7684\u8868\u8fbe\u5f0f\u5f15\u64ce\uff0c\u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u628a “\u5927\u5c0f\u5199” \u6982\u5ff5\u5ef6\u4f38\u81f3UNICODE \u8303\u56f4\u7684\u5927\u5c0f\u5199\u3002\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503Singleline\u2502\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5c0f\u6570\u70b9 “.” \u5339\u914d\u9664\u4e86\u6362\u884c\u7b26\uff08\\n\uff09\u4ee5\u5916\u7684 \u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u5b57\u7b26\u3002\u914d\u7f6e\u4e3aSingleline \u53ef\u4f7f\u5c0f\u6570\u70b9\u53ef\u5339\u914d\u5305\u62ec\u6362\u884c\u7b26 \u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u5728\u5185\u7684\u6240\u6709\u5b57\u7b26\u3002\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503Multiline \u2502\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u8868\u8fbe\u5f0f “^” \u548c “$” \u53ea\u5339\u914d\u5b57\u7b26\u4e32\u7684\u5f00\u59cb \u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u2460 \u548c\u7ed3\u5c3e \u2463 \u4f4d\u7f6e\u3002\u5982\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u2460xxxxxxxxx\u2461\\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u2462xxxxxxxxx\u2463\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u914d\u7f6e\u4e3a Multiline \u53ef\u4ee5\u4f7f “^” \u5339\u914d \u2460 \u5916\uff0c\u8fd8\u53ef\u4ee5\u5339\u914d\u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u6362\u884c\u7b26\u4e4b\u540e\uff0c\u4e0b\u4e00\u884c\u5f00\u59cb\u524d \u2462 \u7684\u4f4d\u7f6e\uff0c\u4f7f “$” \u5339\u914d \u2463\u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u5916\uff0c\u8fd8\u53ef\u4ee5\u5339\u914d\u6362\u884c\u7b26\u4e4b\u524d\uff0c\u4e00\u884c\u7ed3\u675f\u2461 \u7684\u4f4d\u7f6e\u3002\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2520\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2528
\n\u2503Global\u00a0\u00a0\u00a0 \u2502\u4e3b\u8981\u5728\u5c06\u8868\u8fbe\u5f0f\u7528\u6765\u66ff\u6362\u65f6\u8d77\u4f5c\u7528\uff0c\u914d\u7f6e\u4e3a Global \u8868\u793a\u2503
\n\u2503\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2502\u66ff\u6362\u6240\u6709\u7684\u5339\u914d\u3002\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u2503
\n\u2517\u2501\u2501\u2501\u2501\u2501\u2537\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u251b<\/p>\n

4. \u5176\u4ed6\u63d0\u793a
\n4.1 \u5982\u679c\u60f3\u8981\u4e86\u89e3\u9ad8\u7ea7\u7684\u6b63\u5219\u5f15\u64ce\u8fd8\u652f\u6301\u90a3\u4e9b\u590d\u6742\u7684\u6b63\u5219\u8bed\u6cd5\uff0c\u53ef\u53c2\u89c1\u672c\u7ad9 DEELX \u6b63\u5219\u5f15\u64ce\u7684\u8bf4\u660e\u6587
\n\u6863\u3002<\/p>\n

4.2 \u5982\u679c\u8981\u8981\u6c42\u8868\u8fbe\u5f0f\u6240\u5339\u914d\u7684\u5185\u5bb9\u662f\u6574\u4e2a\u5b57\u7b26\u4e32\uff0c\u800c\u4e0d\u662f\u4ece\u5b57\u7b26\u4e32\u4e2d\u627e\u4e00\u90e8\u5206\uff0c\u90a3\u4e48\u53ef\u4ee5\u5728\u8868\u8fbe\u5f0f
\n\u7684\u9996\u5c3e\u4f7f\u7528 “^” \u548c “$”\uff0c\u6bd4\u5982\uff1a”^\\d+$” \u8981\u6c42\u6574\u4e2a\u5b57\u7b26\u4e32\u53ea\u6709\u6570\u5b57\u3002<\/p>\n

4.3 \u5982\u679c\u8981\u6c42\u5339\u914d\u7684\u5185\u5bb9\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u5355\u8bcd\uff0c\u800c\u4e0d\u4f1a\u662f\u5355\u8bcd\u7684\u4e00\u90e8\u5206\uff0c\u90a3\u4e48\u5728\u8868\u8fbe\u5f0f\u9996\u5c3e\u4f7f\u7528 “\\b”\uff0c
\n\u6bd4\u5982\uff1a\u4f7f\u7528 “\\b(if|while|else|void|int\u2026\u2026)\\b” \u6765\u5339\u914d\u7a0b\u5e8f\u4e2d\u7684\u5173\u952e\u5b57\u3002<\/p>\n

4.4 \u8868\u8fbe\u5f0f\u4e0d\u8981\u5339\u914d\u7a7a\u5b57\u7b26\u4e32\u3002\u5426\u5219\u4f1a\u4e00\u76f4\u5f97\u5230\u5339\u914d\u6210\u529f\uff0c\u800c\u7ed3\u679c\u4ec0\u4e48\u90fd\u6ca1\u6709\u5339\u914d\u5230\u3002\u6bd4\u5982\uff1a\u51c6\u5907\u5199
\n\u4e00\u4e2a\u5339\u914d “123”\u3001”123.”\u3001”123.5″\u3001”.5″ \u8fd9\u51e0\u79cd\u5f62\u5f0f\u7684\u8868\u8fbe\u5f0f\u65f6\uff0c\u6574\u6570\u3001\u5c0f\u6570\u70b9\u3001\u5c0f\u6570\u6570\u5b57\u90fd\u53ef\u4ee5
\n\u7701\u7565\uff0c\u4f46\u662f\u4e0d\u8981\u5c06\u8868\u8fbe\u5f0f\u5199\u6210\uff1a”\\d*\\.?\\d*”\uff0c\u56e0\u4e3a\u5982\u679c\u4ec0\u4e48\u90fd\u6ca1\u6709\uff0c\u8fd9\u4e2a\u8868\u8fbe\u5f0f\u4e5f\u53ef\u4ee5\u5339\u914d\u6210\u529f\u3002\u66f4
\n\u597d\u7684\u5199\u6cd5\u662f\uff1a”\\d+\\.?\\d*|\\.\\d+”\u3002<\/p>\n

4.5 \u80fd\u5339\u914d\u7a7a\u5b57\u7b26\u4e32\u7684\u5b50\u5339\u914d\u4e0d\u8981\u5faa\u73af\u65e0\u9650\u6b21\u3002\u5982\u679c\u62ec\u53f7\u5185\u7684\u5b50\u8868\u8fbe\u5f0f\u4e2d\u7684\u6bcf\u4e00\u90e8\u5206\u90fd\u53ef\u4ee5\u5339\u914d 0 \u6b21
\n\uff0c\u800c\u8fd9\u4e2a\u62ec\u53f7\u6574\u4f53\u53c8\u53ef\u4ee5\u5339\u914d\u65e0\u9650\u6b21\uff0c\u90a3\u4e48\u60c5\u51b5\u53ef\u80fd\u6bd4\u4e0a\u4e00\u6761\u6240\u8bf4\u7684\u66f4\u4e25\u91cd\uff0c\u5339\u914d\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u6b7b\u5faa\u73af
\n\u3002\u867d\u7136\u73b0\u5728\u6709\u4e9b\u6b63\u5219\u8868\u8fbe\u5f0f\u5f15\u64ce\u5df2\u7ecf\u901a\u8fc7\u529e\u6cd5\u907f\u514d\u4e86\u8fd9\u79cd\u60c5\u51b5\u51fa\u73b0\u6b7b\u5faa\u73af\u4e86\uff0c\u6bd4\u5982 .NET \u7684\u6b63\u5219\u8868\u8fbe
\n\u5f0f\uff0c\u4f46\u662f\u6211\u4eec\u4ecd\u7136\u5e94\u8be5\u5c3d\u91cf\u907f\u514d\u51fa\u73b0\u8fd9\u79cd\u60c5\u51b5\u3002\u5982\u679c\u6211\u4eec\u5728\u5199\u8868\u8fbe\u5f0f\u65f6\u9047\u5230\u4e86\u6b7b\u5faa\u73af\uff0c\u4e5f\u53ef\u4ee5\u4ece\u8fd9\u4e00
\n\u70b9\u5165\u624b\uff0c\u67e5\u627e\u4e00\u4e0b\u662f\u5426\u662f\u672c\u6761\u6240\u8bf4\u7684\u539f\u56e0\u3002<\/p>\n

4.6 \u5408\u7406\u9009\u62e9\u8d2a\u5a6a\u6a21\u5f0f\u4e0e\u975e\u8d2a\u5a6a\u6a21\u5f0f\uff0c\u53c2\u89c1\u8bdd\u9898\u8ba8\u8bba\u3002<\/p>\n

4.7 \u6216 “|” \u7684\u5de6\u53f3\u4e24\u8fb9\uff0c\u5bf9\u67d0\u4e2a\u5b57\u7b26\u6700\u597d\u53ea\u6709\u4e00\u8fb9\u53ef\u4ee5\u5339\u914d\uff0c\u8fd9\u6837\uff0c\u4e0d\u4f1a\u56e0\u4e3a “|” \u4e24\u8fb9\u7684\u8868\u8fbe\u5f0f\u56e0
\n\u4e3a\u4ea4\u6362\u4f4d\u7f6e\u800c\u6709\u6240\u4e0d\u540c\u3002<\/p>\n

5. \u66ff\u6362\u64cd\u4f5c
\n\u5bf9\u5339\u914d\u5230\u7684\u5b57\u7b26\u4e32\u8fdb\u884c\u66ff\u6362\u64cd\u4f5c\u3002<\/p>\n

5.1 \u66ff\u6362\u8868\u8fbe\u5f0f $1 ~ $999<\/p>\n

\u4ee3\u8868\u67d0\u4e2a\u6355\u83b7\u7ec4\u6355\u83b7\u5230\u7684\u5185\u5bb9\u3002\u5982\u679c\u6355\u83b7\u7ec4\u7f16\u53f7\u5927\u4e8e\u8868\u8fbe\u5f0f\u4e2d\u7684\u6700\u5927\u6355\u83b7\u7ec4\u7f16\u53f7\uff0c\u90a3\u4e48 DEELX \u4f1a
\n\u51cf\u5c11\u6570\u5b57\u4e2a\u6570\uff0c\u4ee5\u4f7f\u6355\u83b7\u7ec4\u7f16\u53f7\u5c0f\u4e8e\u6216\u7b49\u4e8e\u6700\u5927\u7f16\u53f7\uff1b\u800c\u628a\u5269\u4f59\u7684\u6570\u5b57\u770b\u4f5c\u5b57\u7b26\u4e32\u5e38\u91cf\u3002<\/p>\n

\u4e3e\u4f8b\uff1a
\n\u5f53\u524d\u6700\u5927\u6355\u83b7\u7ec4\u7f16\u53f7\u4e3a 20\uff0c\u90a3\u4e48\uff0c\u6307\u5b9a\u66ff\u6362\u4e3a “$999” \u5c06\u88ab\u770b\u4f5c “$9” + “99”\uff1b\u6307\u5b9a\u66ff\u6362\u4e3a
\n“$15” \u5c06\u4ee3\u8868\u7b2c 15 \u4e2a\u6355\u83b7\u7ec4\u3002\u5982\u679c\u672c\u6765\u5c31\u662f\u60f3\u628a “5” \u5f53\u6210\u5b57\u7b26\u4e32\u5e38\u91cf\u65f6\uff08”$1″ + “5”\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528
\n$0015 \u8868\u793a\uff0cDEELX \u6700\u591a\u8bc6\u522b 3 \u4f4d 10 \u8fdb\u5236\u6570\u5b57\u3002<\/p>\n

5.2 \u66ff\u6362\u8868\u8fbe\u5f0f ${name}<\/p>\n

\u4ee3\u8868\u6307\u5b9a\u547d\u540d\u5206\u7ec4\u6355\u83b7\u5230\u7684\u5185\u5bb9\u3002<\/p>\n

5.3 \u66ff\u6362\u8868\u8fbe\u5f0f $$<\/p>\n

\u8868\u793a\u4e00\u4e2a $ \u7b26\u53f7\u3002<\/p>\n

5.4 \u66ff\u6362\u8868\u8fbe\u5f0f $&<\/p>\n

\u4ee3\u8868\u6bcf\u6b21\u5339\u914d\u5230\u5185\u5bb9\u3002<\/p>\n

5.5 \u66ff\u6362\u8868\u8fbe\u5f0f $`<\/p>\n

\u4ee3\u8868\u539f\u5b57\u7b26\u4e32\u4e2d\uff0c\u5339\u914d\u5230\u7684\u5185\u5bb9\u4e4b\u524d\u7684\u5b57\u7b26\u4e32\u3002$` \u4e2d`\u7b26\u53f7\u5c31\u662f\u952e\u76d8\u5de6\u4e0a\u89d2”~”\u4e0b\u8fb9\u7684\u90a3\u4e2a\u7b26\u53f7\u3002<\/p>\n

5.6 \u66ff\u6362\u8868\u8fbe\u5f0f $’<\/p>\n

\u4ee3\u8868\u539f\u5b57\u7b26\u4e32\u4e2d\uff0c\u5339\u914d\u5230\u7684\u5185\u5bb9\u4e4b\u540e\u7684\u5b57\u7b26\u4e32\u3002$’ \u4e2d ‘ \u7b26\u53f7\u5c31\u662f\u5355\u5f15\u53f7\u3002<\/p>\n

5.7 \u66ff\u6362\u8868\u8fbe\u5f0f $+<\/p>\n

\u4ee3\u8868\u6240\u6709\u201c\u6709\u6355\u83b7\u201d\u7684\u5206\u7ec4\u4e2d\uff0c\u7f16\u53f7\u6700\u5927\u7684\u90a3\u4e2a\u5206\u7ec4\u3002<\/p>\n

\u4e3e\u4f8b\uff1a
\n“aaa(b+)|ccc(b+)” \u5728\u5339\u914d “aaabbb” \u65f6\uff0c\u867d\u7136\u6700\u5927\u5206\u7ec4\u662f\u7b2c2\u4e2a\u5206\u7ec4\uff0c\u4f46\u6700\u5927\u201c\u6709\u6355\u83b7\u201d\u7684\u662f\u7b2c
\n1\u4e2a\u5206\u7ec4\uff0c\u6b64\u65f6\u7684 $+ \u4ee3\u8868 $1 \u3002<\/p>\n

5.8 \u66ff\u6362\u8868\u8fbe\u5f0f $_<\/p>\n

\u4ee3\u8868\u88ab\u66ff\u6362\u7684\u6574\u4e2a\u5b57\u7b26\u4e32\u3002”_” \u662f\u4e0b\u5212\u7ebf\u3002<\/p>\n

[\u5b8c]<\/p>\n","protected":false},"excerpt":{"rendered":"

2.2 \u53cd\u5411\u5f15\u7528 \\1, \\2… \u8868\u8fbe\u5f0f\u5728\u5339\u914d\u65f6\uff0c\u8868\u8fbe\u5f0f\u5f15\u64ce\u4f1a\u5c06\u5c0f\u62ec\u53f7 “( )&#8 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-651","post","type-post","status-publish","format-standard","hentry","category-code_related"],"_links":{"self":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/651","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/comments?post=651"}],"version-history":[{"count":2,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/651\/revisions"}],"predecessor-version":[{"id":5179,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/651\/revisions\/5179"}],"wp:attachment":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/media?parent=651"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/categories?post=651"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/tags?post=651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}