正则表达式

发布时间：2020-12-13 22:25:26 所属栏目：百科来源：网络整理

导读：#include iostream #include string #include regex int main(void) { std::string str("2015-07-07 15:42:50,666 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /10.215.145.89:9003,dest: /10.196.139.31:38385,bytes: 17660496

#include <iostream> #include <string> #include <regex> int main(void) { std::string str("2015-07-07 15:42:50,666 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /10.215.145.89:9003,dest: /10.196.139.31:38385,bytes: 17660496,op: HDFS_READ,cliID: DFSClient_attempt_1435652218972_8928036_m_000228_0_1283375306_1,offset: 0,srvID: DS-885471072-10.215.145.89-9003-1416312428093,blockid: BP-1531210715-10.215.135.49-1416303685693:blk_1256393234_183414267,duration: 32839633797"); std::regex reg("(^[^,]+?),.+bytes: ([^,].+?),.+op: ([^,.+cliID: DFSClient_attempt([^,]+)_m"); std::smatch match; std::string result(""); std::regex_search(str,match,reg); /* op */ result += match[3]; result.append("|"); /* date */ result += match[1]; result.append("|"); /* application */ result.append("application"); result += match[4]; result.append("|"); /* bytes */ result += match[2]; std::cout << result << std::endl; }

（编辑：李大同）

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